CA1338043C - Cable television system - Google Patents

Abstract

A cable television system and method in which each subscriber's converter is located outside the subscriber's premises in an external control unit ("ECU") which also includes several other sub-scribers' converters. The ECU includes common signal processing circuitry for controlling all the con-verters in the ECU. In addition to television sig-nals, the cable network transmits control and data signals in both directions between the ECU and the head end of the system and between the ECU and each subscriber. Each subscriber supplies a portion of the power required by the associated ECU. Multiple television channels can be supplied to each sub-scriber via a single drop cable connecting the sub-scriber to the ECU.

Description

CABLE TELEVISION SYSTEM
This is a divisional application of Canadian Patent Application No. 481,221, filed on May 10, 1985.
Background of the Inventlon This invention relates to cable television systems, and more particularly to cable television systems in which the converter for converting por-tions of the television signal on the cable network to the television signal which is applied to the subscriber's television receiver is located outside the subscriber's premises.
There is increasing interest in cable tele-vision systems in which the converter for converting the portion of the cable television signal which the subscriber desires to receive to a signal suitable far application to the subscriber's television set is located outside the subscriber's premises, for example, on or adjacent to a neighboring utility or telephone pole. This is of interest because it re-duces the risk of unauthorized tampering with the converter, accidental or intentional misappropria-tion of or damage to the converter, and the like.
On the other hand, locating the converter outside the subscriber's premises increases the com-plexity and cost of the system because apparatus must then be included in the system to enable the subscriber to remotely control the converter. This consideration has tended to discourage the develop-338~43

-2-ment of cable television systems with off-premises converters.
It is therefore an object of this inven-tion to improve, simplify and reduce the cost of cable television systems with off-premises converters.
Summary of the Invention This and other objects of the invention are accomplished in accordance with the principles of the invention by providing a cable television system and method in which the off-premises conver-ters of several adjacent subscribers are at least partially controlled by common signal processing circuitry associated with those converters. The common signal processing circuitry and all the asso-ciated converters are preferably located in a common facility, for example, a housing mounted on or adja-cent to a utility pole neighboring the premises of the associated subscribers. This apparatus is referred to herein as an external control unit or "ECU". The ECU preferably includes only a single tap for each network cable serving the ECU. The signals derived from this tap are distributed appro-priately to the components of the ECU. A drop cable extends from the ECU to each subscriber's premises.
Inside the subscriber's premises the drop cable is connected to a subscriber processing unit or "SPU" which is typically located adjacent to the subscriber's television receiver. The SPU applies the television signal on the drop cable to the tele-vision receiver and also applies subscriber-originated control signals to the drop cable for transmission back to the ECU. Other devices located in the sub-scriber's premises, such as burglar, fire and other alarm or monitoring equipment capable of applying control signals to the drop cable for transmission ~3~ 1 338043 back to the ECU, can also be connected to the drop cable.
The ECU processes the control signals originated by all of the associated subscribers to satisfy, if appropriate, the service requests indi-cated by those control signals. In particular, the common signal processing circuitry in the ECU is used as extensively as possible to process the subscriber-originated control signals to minimize the amount of separate ECU circuitry which must be provided for each subscriber.
The ECU is also capable of receiving and responding to control signals from the so-called "head end" of the cable network. For example, these control signals may include channel authorization data identifying which channels on the cable network a particular subscriber is authorized to receive and view. These head-end-originated control signals are preferably transmitted via the cable network, and the common signal processing circuitry in each ECU
is again used as extensively as possible to process these signals. Because each ECU typically serves several subscribers, all of those subscribers can be serviced from the head end by control signals ad-dressed to the ECU rather than to each subscriber individually. This greatly facilitates control of the system from the head end.
Further features of the invention, its nature and various advantages will be more apparent from the accompanying drawing and the following detailed description of the invention.

Brief Description of the Drawing Figure 1 is a block diagram of a cable television system constructed in accordance with the lnventlon.

~ ~ _4_ l 338043 Figure 2 is a schematic diagram of a typi-cal subscriber unit ("SU") in the apparatus of Figure 1.
Figure 3 is a block diagram of the analog unit in the apparatus of Figure 1.
Figure 4 is a schematic block diagram of the communication unit in the apparatus of Figure 1.
Figures 5a-5i, which are connected togeth-er as shown in Figure 5j, are collectively a schematic block diagram of the digital unit in the apparatus of Figure 1. Figures Sk-5s are collectively a schematic diagram of the gate array shown in Figure Sc.
Figures 5a-5s are sometimes collectively referred to as Figure 5.
Figure 6 is a schematic diagram of the common power unit in the apparatus of Figure 1.
Figure 7 is a schematic block diagram of the "SPU" in the apparatus of Figure 1.
Figure 8 is a block diagram of the central control computer ("CCC") and modem of the headend in the apparatus of Figure 1.
Figures 9a-b are flow charts illustrating the flow of a program controlling the operation of the so-called Drop Processor of the ECU.
Figures lOa-b are diagrams of basic message formats used in an embodiment of the invention for data communication in the forward direction from the CCC to an ECU.
Figure 11 is a diagram of a basic message format used in an embodiment of the invention for data communication in the reverse direction from an ECU to the CCC.
~ Figures 12-17 are diagrams of various mes-sages sent between the CCC and an ECU in an embodi-ment of the invention.
Figures 18a-h are flow charts illustrating the flow of a program controlling the operations of s the so-called Data Processor of the ECU in an embodi-ment of the invention.
Figure 19 is a diagram of a basic message format used in another embodiment of the invention for data communication in the forward direction from the CCC to an ECU.
Figure 20 is a diagram of a basic message format used in another embodiment of the invention for data communication in the reverse direction from an ECU to the CCC.
Figures 21a-23d are diagrams of messagès sent between the CCC and an ECU in another embodiment of the invention.
Detailed Description of the Invention I. Overview of the System As shown in Figure 1, an illustrative em-bodiment of the cable television system 10 of this invention includes head end apparatus 12; cable net-work 14; a plurality of external control units ECU1, ECU2, etc., connected to cable network 14 at loca-tions which are typically remote from one another and from head end 12; and a plurality of subscriber premises SUBl, SUB2, etc., each of which is connect-ed to an associated ECU by a drop cable DROP1, DROP2, etc. In the particular embodiment shown in the drawing, each ECU can be connected to as many as six subscribers, but this number is arbitrary and the maximum number of subscribers per ECU can be larger or smaller than six as desired.
Head end 12 typically includes one or more sources of television signal information such as conventional satellite antenna 20. Conventional satellite receiver 22 separates the television sig-nal information received via antenna 20 into a plu-rality of base band television signals, each of which represents one base band television ch~nne Conventional modulator 24 modulates each of these television signals so that each base band channel is shifted to a predetermined frequency or "physical"
cable channel for distribution via cable network 14.
Additional base band television and other signals (e.g., television signals from studio cameras or video recorders, FM audio signals, etc.) may also be applied to modulator 24 via leads 26, 28, etc., and shifted to predetermined physical cable channels by the modulator.
All of the output signals of modulator-24 are applied to conventional combiner 30 which com-bines them for application to cable network 14 via conventional combiner 32. Combiner 32 also adds control and data signals to the signal applied to cable network 14. These control and data signals may be of two types: (1) a so-called "forward data"
signal which represents information generated at head end 12 for controlling the ECUs in the network, and (2) a forward high data rate channel ("HDRC") signal which is typically included in the FM band and which allows the cable network to be used for such purposes as distributing non-television signal data (e.g., general purpose computer programs and data) to the subscribers. Because the forward HDRC
signal is typically included in`the FM band, the term "FM audio signal" as used herein includes the forward ~DRC signal if such a signal is employed in the system.
In addition to adding forward data and forward HDRC signals to the signal applied to cable network 14, combiner 32 also conducts so-called "re-ve~se data" signals in the opposite direction from cable network 14 to modem 34. The reverse data sig-nals are control signals generated by the ECUs as described below for transmission to head end 12 for use in controlling the cable television network. In the illustrative embodiment shown and described here-in, four channels are available for reverse data communication. Modem 34 converts (modulates) forward data signals produced by central control computer ("CCC") 36 to signals suitable for transmission via cable network 14. Modem 34 also converts (demodu-lates) reverse data signals received from cable net-work 14 to signals suitable for processing by cen-tral control computer 36.
Combiner 32 also extracts from the signal on cable network 14 a reverse HDRC signal which al-lows the cable network to be used for such purposes as transmitting non-television signal data (e.g., fire and burglary alarm signals) from the subscrib-ers to a central location such as head end 12. The reverse HDRC signal is typically in a frequency band (e.g., 25 MHz) which is independent from all other fre~uency bands employed in the system. The use of a reverse HDRC frequency band in the present invention enables direct two-way communication between the head end and the subscribers, and m;nim-7es noise and other signal degradation problems affecting other communication signals on the CATV cable and inherent in conventional two-way CATV systems.
Each ECU includes a conventional tap off device 50 for applying the signals which appear on cable network 14 to the circuitry of the ECU and for applying to cable network 14 the reverse data origi-nating at the ECU and the reverse HDRC signals orig-inating at the associated subscribers. Each ECU is typically located outside the premises of the sub-scribers served by the ECU. Typically, all the circuitry of the ECU is located in a common housing which may be adapted for mounting on a utility pole or other suitable structure adjacent to the premises of the subscribers served by the ECU.

` 1 338043 Tap off device 50 is connected to conven-tional splitter-combiner network 52. Splitter-combiner network 52 distributes the signals received from cable network 14 to a plurality of subscriber units SUl, SU2, etc. within the ECU, each of which is associated with a respective one of the subscrib-ers served by the ECU. Although each SU includes additional apparatus described in detail below, for the moment it will be sufficient to think of each SU
as a digitally controlled converter for performing the television signal frequency conversion function performed by the converter located adjacent the sub-scriber's television receiver in conventional cable network systems.
Splitter-combiner network 52 also distrib-utes the signals received from cable network 14 to analog unit 54, described in greater detail below.
In general, analog unit 54 separates the FM audio and forward data signals from the other signals re-ceived from cable network 14. Analog unit 54 ap-plies the FM audio signal to each SU for transmission to the subscribers. Analog unit 54 also demodulates the forward data signal and applies the resulting data signal to digital unit 55. Analog unit 54 applies reverse HDRC signals received from the SUs to splitter-combiner network 52, and splitter-combiner network 52 applies those reverse HDRC signals to tap off device 50 and thereby to cable network 14.
Splitter-combiner network 52 also applies reverse data signals from communication unit 56 to tap off device 50. In addition, if a so-called "slave" ECU (not shown in Figure 1) is associated with "master'l ECUl as described in detail below, splitter-combiner network 52 conveys signals in both directions via lead 58 between tap off device 50 and the splitter-combiner network of the slave ECU.

~ 338043 `_" g As mentioned above, each SU receives the entire cable network signal from splitter-combiner network 52. In response to control signals received from digital unit 55, each SU (1) selects from the cable network signal the portion of that signal rep-resenting the television channel which the associat-ed subscriber wishes to view, and (2) converts that signal portion to a television signal on a predeter-mined channel (e.g., channel 3~ to which the associ-ated subscriber's television receiver 90 is tuned.
This television signal is applied to the SU's asso-ciated drop cable DROP1, DROP2, etc., which runs from the SU to the associated subscriber's premises SUBl, SUB2, etc. Each SU also receives the FM audio signal from analog unit 54 and combines that signal with the television signal applied to the associated subscriber's drop cable.
The ECU communicates via each SU with the associated subscriber's apparatus (in particular, the SPU of the associated subscriber) by means of so-called very low frequency ("VLF") data signals on the associated drop cable. Also, when a subscriber operates his or her SPU to make a television channel selection, the SPU applies to the associated drop cable for transmission to the ECU VLF data signals representative of the desired channel selection.
Each SU conveys these VLF data signals in both direc-tions between the associated subscriber drop cable and communication unit 56 which includes a modem for conveying these VLF data signals to and from digital unit 55. Each SU also conveys reverse HDRC signals from the associated subscriber drop cable to analog unit 54.
The power required to operate each ECU is supplied by the subscribers served by that ECU.
Each subscriber has an SPU which applies an alter-nating current ("AC") power signal to the associated `` 1 338043 drop cable. The associated SU conveys that power signal to common power unit 60 in the ECU. Common power unit 60 combines all of the applied power sig-nals and derives from the combined signal the cur-rents and voltages needed to power the various components of the ECU. In this way, all of the sub-scribers served by the ECU share the power require-ments of the ECU. In the event of a general AC power failure, common power unit 60 applies a control signal to digital unit 55 which causes the digital unit to shut down in such a way that important data is not lost.
Digital unit 55 controls the operation of the ECU. Digital unit 55 receives and processes forward data applied to the digital unit via analog unit 54. Digital unit 55 also generates reverse data and applies that data to communication unit 56 for transmission to head end 12. Digital unit 55 receives and processes demodulated VLF signals ap-plied to the digital unit via communication unit 56 from all of the SUs in the ECU. Digital unit 55 also generates other signals for transmission back to the subscribers via communication unit 56 and the SUs. Digital unit 55 also controls various functions of the SUs. For example, when a subscrib-er wishes to view a particular television channel, digital unit 55 receives VLF signals generated by the subscriber indicating the desired channel selec-tion, determines whether or not the subscriber is authorized to receive that channel based upon channel authorization data previously provided by head end 12, and, if the subscriber is authorized to receive the desired channel, controls the subscriber's SU to cause it to apply the desired channel signal to the subscriber's drop cable.
Each subscriber has at least one SPU, at least one conventional television receiver 90 con-` - -11- 1 338043 nected to the SPU, and (optionally) a conventional remote control unit ("RCU") for remotely controlling the SPU by infrared or other signals. The SPU is connected to the drop cable and applies the received drop cable signal to the associated television re-ceiver 90. The received drop cable signal may also be applied to the subscriber's (optional) FM audio receiver equipment (not shown) and to the subscriber's (optional) forward HDRC utilization equipment (also not shown). The SPU has a conventional keypad (not shown in Figure 1) for allowing the subscriber to-enter data such as the number of the television chan-nel the subscriber wishes to receive. Alternatively, this data can be entered via the subscriber's RCU.
The SPU converts data entered by the subscriber to VLF data signals which are transmitted to the as-sociated ECU via the subscriber's drop cable. The SPU also typically has data display elements such as seven-segment light emitting diode ("LED") displays.
These displays can be controlled by VLF data sent to the SPU from the associated ECU. The SPU also ap-plies the reverse HDRC signal originated by the sub-scriber to the associated drop cable.
The following Table A summarizes the allo-cation of carrier signal frequencies in the illus-trative embodiment of the invention shown and described herein:

TABLE A
Type of Signal Approximate Frequency 1. AC Power 60 Hz 2. VLF Data (ECU to SPU) 430 KHz

3. VLF Data (SPU to ECU) 468 KHz

4. Reverse Data a. Channel 0 19.125 MHz b. Channel 1 19.375 MHz c. Channel 2 19.625 MHz d. Channel 3 19.875 MHz

5. Reverse HDRC Data 25 MHz

6. Television 50-88 MHz 108-450 MHz

7. FM Audio (Includes 88-108 MHz Forward HDRC Data)

8. Forward Data 104 MHz It will be understood that the frequencies shown in Table A are merely illustrative and that other frequencies can be employed if desired. For convenience herein, the television and FM audio sig-nals on cable network 14 (items 6 and 7 in Table A, above) are sometimes hereafter referred to collec-tively as CATV signals.
Although cable network 14 has only a sin-gle feeder cable in the embodiment shown in Figure 1, two feeder cables can be employed if desired to in-crease the number of television channels available for distribution to subscribers. For example, if tw~ cables were provided, elements such as 24, 30, 32, 50, and 52 would be substantially duplicated to serve the second cable. Each SU would receive input CATV signals from each cable. To select between the two cables, each SU would also include a switch con-trolled by digital unit 55 for switching between the two applied cable signals. This is discussed in greater detail below in relation to the SUs. In a multi-cable system, the FM audio, reverse HDRC, for-ward data, and reverse data signals are preferably transmitted by only one cable, designated the pri-mary cable, thereby allowing some simplification of the apparatus associated with the other cable or cables. Thus, elements such as 34, 36, 54, 55, 56, and 60 do not have to be duplicated or even signi--ficantly altered to provide a multi-cable system.
It is also possible for each subscriber to have more than one television receiver 90. The ad-ditional television receiver or receivers can be attached to one SPU, in which case all of the tele-vision receivers receive the same television signal.
Alternatively, the additional television receiver or receivers can be served by a second SPU to enable the subscriber to simultaneously select and receive two different television channels. If a subscriber has two SPUs, both of the SPUs can be connected to a single drop cable. In such a case, one SPU will be configured as a "master" SPU, and the other will be configured as a "slave" SPU. At the ECU, a sub-scriber with a master and slave SPU is served by two SUs. Each SU is associated with a different SPU.
The signals from both SUs are multiplexed onto the single drop cable. The television signal from the first or "primary" SU is converted by the SU to, and applied to the drop cable as, a first or lower drop cable channel. The television signal from the other or "secondary" SU is converted to, and applied to the drop cable as, a second or higher drop cable channel.
The television receiver associated with each SPU is tuned to a respective one of the two drop cable channels.

Thus, each subscriber has at least one primary SU in the ECU associated with a master SPU.
If a subscriber has two SPUs, that subscriber may also have a secondary SU in the ECU associated with the slave SPU. In any event, the total number of SUs which can be included in an ECU in the particu-lar embodiment shown and described herein is six.
If additional subscriber service is needed at the location of an ECU which is operating at ca-pacity, then a second or "slave" ECU containing six more SUs can be connected to the splitter-combiner network 52 of the "master" ECU via lead 58 as men-tioned above. In this way, additional subscriber service can be provided without the necessity of cutting into the cable network 14 to insert an addi-tional tap 50.
II. Subscriber Unit Figure 2 shows a typical subscriber unit SUl in greater detail. The cable network signal from splitter-combiner network 52 (Figure 1) is ap-plied to conventional converter tuner 100 via the INPUT terminal and optional switching device 102.
If the system had two cables rather than one as shown in Figure 1, each SU would have two INPUT ter-minals, each connected to a respective one of the two cables. Switching device 102, which can include a conventional RF switching relay such as part number G4Y-152P available from Tateishi Electric Co.
("Omron") of Tokyo, Japan, would then be used to apply one or the other of the two cable signals to converter tuner 100. Switching device 102 would be controlled to select signals from one or the other CATV feeder cable by a conventional transistor switch (part of switching device 102) responsive to the state of the Q3 output on pin 7 of conventional addressable latch 140.

1 33ao43 . .

Converter tuner 100, together with conventional frequency synthesizer 104 and the cir-cuits including crystal 106, capacitors 108, 110, 112, 114, 116, 118, 120, resistors 122, 124, 126, 128, and transistors 130 and 132, selects the por-tion of the cable television signal which the asso-ciated subscriber wishes to receive, converts that signal portion to a television signal on the channel to which the subscriber's television receiver 90 is tuned, and applies that signal to the DROP CABLE
output terminal of the SU via conventional FM adder device 180, directional coupler 182, and capacitor 184. In one embodiment, converter tuner 100 may be part number CVA 213A (channel 3) or CVA 215A (chan-nel 5) available from Toshiba Corporation of Tokyo, Japan (hereinafter "Toshiba"), or an equivalent de-vice to convert the CATV signals to the same or other channels or frequencies. Frequency synthesizer 104 may be Toshiba part number TD6352P or an equivalent device.
The converter circuitry operates as fol-lows. Via its DATA input lead, frequency synthe-sizer 104 receives a ten-bit main channel conversion coefficient ("MCCC") and a five-bit "swallow" con-version coefficient ("SCC"). The bits of these two coefficients, which are sometimes collectively re-ferred to as the main and swallow ("MS") coeffi-cients, are shifted into frequency synthesizer 104 at the clock rate established by its CLOCK input.
When all the bits of the MS coefficients have been shifted into frequency synthesizer 104, they are latched into the synthesizer in response to a signal applied to the LOAD input terminal. Frequency syn-thesizer 104 then uses the MS coefficients in a known manner to (1) scale down the frequency of the voltage controlled LOCAL OSCILLATOR ("LOC. OSC.") output signal of converter tuner 100, (2) perform a phase detection comparison between the scaled down LOC.
OSC. signal frequency and the reference OSCILLATOR
("OSC.") signal frequency provided in part by crystal 106, and (3) produce an error signal at the PHASE
DETECTOR OUTPUT ("P/D OUT") terminal. The error signal produced by frequency synthesizer 104 is used to control the voltage controlled oscillator in con-verter tuner 100 to cause that oscillator to produce the demodulation signal frequency needed to convert the desired cable channel to the channel to which the subscriberls television receiver 90 is tuned.~
Addressable latch 140, which may be Toshiba part number TC40H259 or an equivalent de-vice, receives control and data signals from digital unit 55, stores that data, and outputs it to fre-quency synthesizer 104. In particular, addressable latch 140 receives data via its DATA input lead and processes that data in accordance with the function control signals applied to its A, B, and C input leads. The addressable latch in a particular SU is selected and thereby enabled by an appropriate sig-nal applied to the NOT ENABLE ("NEA") input terminal of the addressable latch to be selected. (In gener-al, the logical polarity of signals and signal names appearing in the drawings will be ignored in this specification. Thus, for example, whereas the sig-nal at pin 14 of addressable latch 140 is actually an inverse enable signal, that signal is simply re-ferred to in this specification by its functional name "NEA" without regard for its logical polarity.) Resistors 142-147 are pull-up resistors convention-ally associated with selected inputs and outputs of addressable latch 140.
Addressable latch 140 also monitors wheth-er or not the associated subscriber is supplying his or her share of the AC power needed to operate the ECU. This function is performed in response to the signal applied to the CLEAR ( "CL" ) input terminal of addressable latch 140. If the associated subscriber is not providing AC power to the ECU via the sub-scriber's drop cable, the Q4 output signal of ad-dressable latch 140 controls the circuit including resistors 150-152, transistors 153-155, diode 156, inductor 158, and capacitor 159 to shut off power to associated converter tuner 100. This prevents any subscriber who is not supplying AC power to the ECU
from receiving television signals from the ECU. The Q5 output signal of addressable latch 140 also in-di-cates whether or not the associated subscriber is supplying AC power. -This Q5 output signal is ap-plied to the POWER DETECT output terminal of the SU
for use by digital unit 55.
Each primary SU such as SU1 has a power section which includes filtering inductor 160, diodes 161-163, capacitors 164-167, and resistors 168-169.
Inductor 160 blocks VLF and CATV signals. Diodes 161 and 162 respectively produce half-wave rectified power signals ("+" and "-") from a 60 volt or less AC power signal on the associated drop cable. The +
and - signals are respectively connected to and summed with other + and - power signals from other sub-scribers and SUs (i.e., SU2-SU6) in the ECU. The summed power signals then are applied to common power unit 60 which is described in detail below. Circuit elements 163 and 167-169 constitute another half-wave rectifier circuit which produces a DC output signal (which is clamped to approximately +5V by diode 157) as long as the associated subscriber is supplying AC power via the drop cable. This DC out-put signal is applied to the CL input terminal of addressable latch 140 via voltage dividing resistors 170-171 for the purpose described above.
If a secondary SU (e.g., SU2) is associat-ed with SU1 to enable the subscriber to select and ` ` - 1 338043 receive two multiplexed channels via the drop cable, then the DC output signal produced by elements 163 and 167-169 is also applied to the secondary SU via resistor 172 in the primary SU and jumper 173 in the secondary SU. Jumper 173 is a completed connection only in the secondary SU. Power supply elements 160-169 are omitted from the secondary SU, as is capacitor 184. Also in the secondary SU, the termi-nal corresponding to the DROP CABLE terminal in Figure 2 is connected to the FM INPUT AND REVERSE
HDRC OUTPUT terminal of the associated primary SU.
Thus, the secondary SU selects one television chan-nel, adds the FM signal to the first television channel signal, and applies the resulting signal to the FM INPUT AND REVERSE HDRC OUTPUT terminal of the associated primary SU. The primary SU selects the second television channel, adds that signal to the signal received from the secondary SU, and applies the resulting signal to the subscriber's drop cable.
In this way each subscriber can receive as many as two television channels multiplexed on a single drop cable. As mentioned above, each of the subscriber's television receivers is tuned to view one or the other of the two channels on the drop cable. The only other differences between the primary and sec-ondary SUs are (1) the use of different local oscil-lator frequencies so that the primary and secondary SUs place the selected cable channels on different drop cable channels, and (2) the omission in the secondary SU of what would otherwise be a redundant VLF input/output.
The rem~-n;ng elements in the SU are (1) a pow~er filtering circuit including inductor 190 to block high-frequency signals from entering the +27V
power line, and capacitor 192 and resistor 194 to remove high-frequency ripple from the +27V power line, and (2) capacitor 196 which is connected be-tween the VLF input/output lead and ground. Direc-tional coupler 182 conveys VLF signals in both direc-tions between the drop cable and the VLF input/output terminal.

III. Analog Unit As shown in Figure 3, analog unit 54 in-cludes bandpass filter 200 for extracting the FM
audio (approximately 88-108 MHz) and forward data (104 MHz plus or minus 100 KHz) signals from the-CABLE SIGNAL. The FM signal is applied to each of the FM OUTPUT AND REVERSE HDRC INPUT terminals of analog unit 54 via input/output coupling network 202. Each FM OUTPUT AND REVERSE INPUT HDRC terminal of analog unit 54 is connected to the FM INPUT AND
REVERSE HDRC OUTPUT terminal of a respective one of the SUs.
Input/output coupling network 202, bandpass filter 204, and lowpass filter 206 convey reverse HDRC signals (25 MHz plus or minus .S MHz~ from the FM OUTPUT AND REVERSE HDRC INPUT terminals to the CABLE SIGNAL terminal. Thus, filters 204 and 206 allow reverse HDRC signals to pass from subscriber premises SUBl, SUB2, etc. (Figure 1) through the ECU
and directly to cable network 14, thereby providing a data signal path for direct communication via cable network 14 between the subscribers and head end 12. However, filters 204 and 206 block other signals from directly passing from the subscribers and drop cables to cable network 14. In particular, filters 204 and 206 prevent signals, such as citizen band and other two-way radio signals, from entering cable network 14 and interfering with or degrading the reverse data signals sent from the ECUs to head end 12. In contrast, in a conventional two-way cable television system, such interfering signals typ-ically are picked up at various poorly or loosely connected or dirty or corroded drop cable connec-tions and cracked cable shields in the CATV system.
The use of an HDRC channel and elements 204 and 206 in the CATV system of the present invention thus allows for reliable, high-speed, direct two-way com-munication between subscribers and head end 12 by isolating cable network 14, and the reverse data transmitted thereon, from interfering signals picked up by numerous drop cable connections.
Conventional bandpass filter 210 extracts the forward data signal from the output signal of bandpass filter 200. The forward data output signal of bandpass filter 210 is applied to mixer 212 for ~ixl~g with the 108.5 MHz output signal of local oscillator 214. The resulting 4.5 MHz output signal is amplified by conventional intermediate frequency amplifier 216 and applied to conventional detector 220. Detector 220 converts the frequency-modulated ("FM") forward data signal to a base band forward data signal which is applied to the FORWARD DATA
OUTPUT terminal of analog unit 54 for application to digital unit 55.

IV. Communication Unit Figure 4 shows communication unit 56 in greater detail. Communication unit 56 is controlled by digital unit 55 and facilitates communication of (1) reverse data from the ECU to the CCC of head end 12, and (2) VLF data to and from the ECU and each associated subscriber's SPU.
For communicating information from the ECU
to-head end 12, communication unit 56 includes re-verse channel selector 300, conventional modulator 330, and conventional bandpass filter 332. Channel `

selector 300, on command from digital unit 55, se-lects any one of four available reverse channels for transmission of ECU reverse data to head end 12. A
two-bit reverse channel selection signal ("REV.
CH. A" and "REV. CH. B") is applied from digital unit 55 to conventional binary decoder 302. Depend-ing on the bit combination present on the A and B
inputs of decoder 302 (i.e., 00, 01, 10, or 11), one of the four outputs of decoder 302 will be low and all other outputs will be high. The outputs of de-coder 302, each of which is connected to a respec-tive one of four crystal-controlled oscillators 304, 306, 308, and 310, in turn cause one of the four oscillators to be operative. Each oscillator 304, 306, 308, and 310 is tuned to oscillate at a differ-ent frequency corresponding to one of the frequen-cies of the four channels available for reverse data communication. In one embodiment, oscillators 304, 306, 308,` and 310 operate at 19.125 MHz, 19.375 MHz, 19.625 MHz, and 19.875 MHz, respectively. It will, of course, be appreciated that other frequencies and a different number of reverse channels can be used if desired.
The output of the particular~oscillator selected by decoder 302 is applied to modulator 330 as a carrier frequency for modulation by the reverse data to be transmitted to head end 12. Modulator 330 can be any conventional modulator for modulating digital signals onto an analog carrier. In a pre-ferred embodiment, modulator 330 is a binary phase-shift keyed ("BPSK") modulator, such as part number MC 1496 available from Motorola Corporation of PhQenix, Arizona (hereinafter "Motorola"). Data is modulated for transmission on each reverse channel at a data rate of 50 Kbps.
Channel selector 300 also includes conven-tional logic circuit 305 (comprised, for example, of conventional NOR and NAND gates) for receiving and enabling the transmission of digital reverse data from digital unit 55 to head end 12, and for receiv-ing a request-to-send ("RTS" ) signal from and pro-viding a clear-to-send ("CTS") signal to digital unit 55. If digital unit 55 is not sending data to head end 12, digital unit 55 maintains the RTS lead to logic circuit 305 in a logical "0" state. This causes logic circuit 305 to apply a signal to tran-sistor 309 through current-limiting resistor 307, thus shorting the output of oscillators 304, 306,-308, and 310 to ground and preventing the applica-tion of carrier to modulator 330. In addition, log-ic circuit 305 (1) maintains the CTS lead in a logical "l" state, thus signaling to digital unit 55 that it is not clear to send data, and (2) disables transmission of data signals to modulator 330. If digital unit 55 desires to send data to head end 12, it raises the RTS lead. This causes logic circuit 305, after a short delay, to (1) remove the signal from transistor 309 to allow a carrier signal to be applied to modulator 330, (2) present a logical "0"
state on the CTS lead to signal digital unit 55 that it is clear to send data, and (3) enable the passage of data signals to modulator 330. Digital unit 55 may transmit data only while CTS is in a logical "0"
state.
Modulator 330 modulates the reverse data presented at its data input line onto the carrier signal presented at its carrier input line. The output of modulator 330 is a modulated signal having a selected one of four carrier frequencies which is applied to bandpass filter 332. Bandpass filter 332 has a 1 MHz passband centered at 19.5 MHz.
The output of bandpass filter 332 is reverse channel output, which is applied to splitter-combiner network , 52 (Figure 1) for transmission via cable network 14 to head end 12.
For enabling communications between the ECU and each associated subscriber SUBl, SUB2 ...
etc., communication unit 56 includes bi-directional multiplexer 350 for connecting a first input/output line to any one of a plurality of second input/output lines as a function of a binary code appearing on subscriber address lines A, B, and C. Subscriber address lines A, B, and C are connected to digital unit 55 to enable digital unit 55 to selectively connect any one of the plurality of second input/out-put lines to the first input/output line. In a pre-ferred embodiment, multiplexer 350 is a 1-to-8 multi-plexer, such as Toshiba part number TC4051BP, having 8 second input/output lines, only 6 of which are used (one for each of up to six SUs). Each of the second input/output lines is connected to the VLF
input/output terminal of a respective one of sub-scriber units SUl, SU2 ... etc. (see Figure 2). By presenting different code combinations on address lines A, B, and C (i.e., 000, 001, 010, 011, 100, or 101), digital unit 55 can select a particular drop cable to enable a particular subscriber to communi-cate with the ECU.
For receiving communications from sub-scribers, the first input/output line of multiplexer 350 is connected through DC-blocking capacitor 336 to the input of very low frequency ("VLF") demo-dulator 340. VLF demodulator 340 receives VLF-modu-lated analog signals transmitted from the SPUs at a data rate of 1200 bps (or any other convenient rate) and demodulates those signals into serial digital data for processing by digital unit 55. In one em-bodiment, the VLF signals received from the SPUs are on/off amplitude-shift keyed ("ASK") modulated sig-nals having a carrier frequency of 468 KHz. A lo-gical "1" (mark) is represented by 100% carrier, and a logical "0" (space) is represented by 0% carrier.
Demodulator 340 includes a conventional parallel tuned LC circuit 342 tuned to produce an output in response to the receipt at its input of a signal having a frequency of 468 KHz. The output of cir-cuit 342 is applied to surface acoustic wave ("saw") filter 344 also tuned to 468 KHz. The output of saw filter 344 in turn is connected to conventional am-plifier 346 which produces a mark and space data output in response to the presence and absence of carrier. This data output is applied to digital unit 55 for processing as data received from the SPUs .
For communication from the ECU to the SPUs, data from digital unit 55 is applied to the data input connection of VLF modulator 320. In one embodiment, VLF modulator 320 modulates digital data signals at a data rate of 1200 bps (or any other convenient rate) from digital unit 55 into an on/off ASK analog VLF signal having a carrier frequency of 430 KHz. Data from digital unit 55 turns on and off transistor 327 (via current-limiting resistor 328).
Transistor 327 in turn controls on and off FET tran-sistor switch 324 via resistors 325 and 326. The 430 KHz carrier signal produced by conventional crystal-controlled oscillator 322 is applied to the base of transistor 360 which is connected in such a way that the carrier signal appears at the transis-tor's collector shifted 180 relative to the carrier signal appearing at the transistor's emitter. The collector carrier signal is switched on and off by transistor switch 324 in accordance with the VLF
data to be transmitted to an SPU. This switched ` ` - 1 338043 carrier signal is applied to the first input/output line of multiplexer 350 via resistor 334 for trans-mission to one of the plurality of subscriber SPUs.
The continuous carrier signal appearing at the emit-ter of transistor 360 is applied to all of the sec-ond input/output lines of multiplexer 350 via transistor 370 and resistors 381-386. In this way, there is constant 430 KHz carrier on all of the sec-ond input/output lines of multiplexer 350 except when the carrier on one of those lines is cancelled by the switched carrier from transistor switch 324.
V. Digital Unit As shown in Figure 5, digital unit 55 has two major subparts. Those subparts are (1) signal processing portion 55a (shown in Figures 5a-5f), and (2) memory portion 55b (shown in Figures 5g-5i).
These two portions of digital unit 55 are intercon-nected by means of the terminals represented by rec-tangles and numbered 01-40. For example, the terminal numbered 01 in Figure 5f is connected to the correspondingly numbered term' n~l in Figure 5g.
Digital unit 55 includes conventional uni-versal synchronous or asynchronous receiver/trans-mitter ("USART") 400, such as part number 8274 available from Intel Corporation of Santa Clara, California (hereinafter "Intel"). USART 400 con-verts HDLC-formatted serial forward data received from head end 12 into parallel data for processing by the remainder of digital unit 55. USART 400 also converts parallel reverse data generated by other elements in digital unit 55 into HDLC-formatted serial data for transmission back to head end 12.
The operation of USART 400 is augmented by gate array 402, shown in detail in Figures 5k-5s, which performs various functions such as converting non-return to zero inverted ("NRZI") forward data from head end 12 on the FORWARD DATA lead to non-return to zero ("NRZ") "receive" data on the RXD lead.
Gate array 402 also converts NRZ "transmit" data on the TXD lead to NRZI reverse data on the REVERSE
DATA lead.
USART 400 and gate array 402 are also in-terconnected by INTERRUPT ("INT"), CLOCK ("CLK"), RXC, TXC, READ ("RD"), WRITE ("WR"), and RESET
("RES") leads. The INT signal is generated by USART 400, is inverted by gate array 402, and is applied to the INT0 terminal of microprocessor 4~0.
This signal is used to alert microprocessor 420 to the occurrence of an important event in USART 400 (e.g., the fact that a character has been received or transmitted via the FORWARD or REVERSE DATA
leads). The CLK3 output signal of gate array 402 is derived from the CLKOUT output signal of micropro-cessor 420. In particular, the 6MHz CLKOUT signal is divided by two by gate array 402 to produce the 3MHz CLK3 output signal which is applied to USART
400. The RXC output signal of gate array 402 is a clock signal derived by gate array 402 from the NRZI
forward data signal. The TXC input signal of gate array 402 is a clock signal produced by microproces-sor 420 to control the rate at which reverse data is transmitted back to head end 12. The source of the RD and WR signals is microprocessor 420. These sig-nals respectively cause other devices in digital unit 55 to output data so that microprocessor 420 can read it, or cause other devices in digital unit 55 to input data from microprocessor 420. The ultimate source of the RESET or RES signals is power detect circuit 480. The POWER DETECT input terminal of digital unit 55 is connected to the RESET output terminal of common power unit 60 (Figure 6). Power detect circuit 480 produces an output signal for ~ -27- 1 338043 resetting microprocessor 420 when power is restored following a power outage. Microprocessor 420 re-sponds to this RES input signal by producing a RESET
output signal which is applied to the RESET input terminal of gate array 402. Gate array 402 applies an inverted RESET signal to USART 400, microcomputer 450, and hex inverting buffer 465.
Gate array 402 is shown in detail in Figures 5k-5s. In Figure 5k, reference number 250 denotes a typical input buffer; reference number 252 denotes a typical AND gate; reference number 254 denotes a typical NAND gate; reference number 256 denotes a typical J-K flip-flop; reference number 258 denotes a typical D-type flip-flop; reference number 260 denotes a typical OR gate; and reference number 262 denotes a typical output buffer. In Fi-gure 5s, reference number 264 denotes a typical latch. The following Table B correlates the gate array 102 pin numbers shown in Figure 5c with the lead labels used in Figures 5K-5s:

TABLE B

Figure 5c Lead Label in Pin Number Figures 5k-5s g IN8 11 INll 13 ___ In addition, leads with EX labels in Figures Sk-5s are connected to similarly labelled leads in Figures 5k-5s. For example, the output lead la-belled EX4 in Figure 5m is connected to the input lead labelled EX4 in Figure 51. The detailed opera-tion of the gate array circuits shown in Figures 5k-5s will be readily apparent to those skilled in the art from the circuits themselves and from the preceding and following functional description of gate array 402 in relation to the other components of digital unit 55.
USART 400 has a REQUEST TO SEND ("RTS" or "DTRA") lead by which it interrogates communication ` `- 1 338043 unit 56 to ensure that the communication unit is ready to transmit reverse data to head end 12. If communication unit 56 is ready to transmit reverse data, the communication unit sends an appropriate signal to USART 400 on the CLEAR TO SEND ("CTS" or "CTSA") lead. USART 400 selects the reverse data channel to be used by means of signals on the RE-VERSE DATA CHANNEL SELECT A and B ("RTSA" and "RTSB") leads, which are also connected to communi-cation unit 56.
Pull-up resistor networks 404-407 are con-nected in the conventional way between +5v power supply circuit 414 and the CTS, RTSA, RTSB, RTS, INTERRUPT, FORWARD DATA, and REVERSE DATA leads, as well as to the TXDB and RXDB leads which are not used. Power supply circuit 414 is configured con-ventionally to provide noise protection for the +5V
power signal used throughout digital unit 55. The VCC terminal of USART 400 is also conventionally connected to +5V power supply 414 in parallel with capacitors 408 and 409. The VCC terminal of gate array 402 is similarly connected to the +5V power supply in parallel with capacitors 410 and 411. The SYNCA terminal of USART 400 is clamped to the +5V
supply via resistor 412. The PRI, CDA, and GROUND
("GND") leads of USART 400 and the GROUND ("GND") lead of gate array 402 are all connected to ground.
USART 400 applies parallel forward data to the data bus of digital unit 55 via terminals D0-D7.
USART 400 also receives parallel reverse data from the data bus via terminals D0-D7. The data bus dis-tributes data among USART 400, microprocessor 420, latches 430 and 432, multiplexers 440 and 442, micro-computer 450, and memory unit 475. Pull-up resistor network 413 is connected in the conventional way between the +5V power supply and the data bus leads.

Microprocessor 420, which can be a conven-tional microprocessor such as Intel part number 80186, performs such functions as (1) communicating with head end 12, (2) processing subscriber requests (e.g., channel selection), and (3) communicating with microcomputer 450. In addition to the data bus connections, microprocessor 420 communicates with USART 400 via its DRQ1, INTA0, DRQ0, Al, A2, PCS0, TlOUT, and TOOUT leads. When USART 400 is to read data directly from the memory portion 55b of digital unit 55, USART 400 requests direct memory access~
("DMA") for reading by applying a DRQ1 signal to microprocessor 420. Microprocessor 420 acknowledges receipt of an INT0 signal from USART 400 via gate array 402 as described above by means of an INTA0 output signal. When USART 400 is to write data di-rectly to the memory portion 55b of digital unit 55, USART 400 requests direct memory access ("DMA") for writing by applying a DRQ0 signal to micropressor 420. The A1 output signal of microprocessor 420 is applied to USART 400 to select one of two register sets in USART 400 for connection to the data bus.
The A2 output signal of microprocessor 420 is ap-plied to USART 400 to one of two register types (i.e., control "C" or data "D") within the USART
register set selected by the A1 signal. The PCS0 (programmable chip select 0) output signal of micro-processor 420 is used to select USART 400 for read-ing data from (WR) or writing data to (RD) micro-processor 420. The TOOUT output signal of micro-processor 420 is a timer signal which controls the rate at which forward and reverse data are transmitted. The TlOUT output signal of micropro-cessor 420 is similar to the TOOUT signal, but con-trols the data rate on unused channel TXDB/RXDB.
Microprocessor 420 also communicates with gate array 402 via its TOOUT, PCS2, PCS4, BHE, INT0, RESET, CLOCK OUT ("CLKOUT"), READ ("RD"), and WRITE
("WR") leads. The T00UT output signal of micropro-cessor 420 is described above. The PCS2 and PCS4 ~programmable chip select 2 and 4) output signals of microprocessor 420 are similar to the PCS0 signal described above. The BHE (byte high enable) output signal of microprocessor 420 is used to allow the 16-bit data bus to be used as an 8-bit data bus.
The INT0 input signal of microprocessor 420 is de-scribed above in connection with USART 400 and gate array 402. The RESET, CLKO~T, RD, and WR output signals of microprocessor 420 are also described above.
Microprocessor 420 applies data and ad-dress signal information to the data bus and re-ceives such information from the data bus via its AD0-AD15 leads. Microprocessor 420 communicates directly with microcomputer 450 via its INT1, INT3, and PCS1 leads. Microprocessor 420 applies addi-tional control signals to memory unit 475 via its UPPER CHIP SELECT ("UCS"), MIDDLE CHIP SELECT
("MCS0"), and LOWER CHIP SELECT ("LCS") leads. The operating frequency of microprocessor 420 is estab-lished in the usual way by the circuit including crystal 421 and capacitors 422 and 423. The VCC, TOIN, TlIN, SRDY, and ARDY leads are connected to the +5V power supply in parallel with capacitors 424 and 425. The TEST, GROUND ("GND"), NMI, and HOLD
leads are connected to ground. As mentioned above, the RES terminal of microprocessor 420 is connected via power detect circuit 480 (including resistors 481-486, inductor 487, transistors 488-489, Zener diode 490, diode 491, and capacitor 492) to the POW-ER DETECT input terminal of digital unit 55. The POWER DETECT terminal is connected the RESET output terminal of common power supply 60 and is used to detect an AC power failure. When AC power is restored following a power interruption, power de-tect circuit 480 holds microprocessor 420 in the reset condition until sufficient time has elapsed to allow the microprocessor to re-initialize itself properly. For this purpose, the output signal of power detect circuit 480 is connected to the RESET
("RES") terminal of microprocessor 420 in parallel with capacitor 426.
Latches 430 and 432 are used to store ad-dress signal information produced by microprocessor 420 at terminals AD0-AD15 while associated data sig-nals are transmitted or received via those same mi-croprocessor terminals. The lQ-8Q output leads of latches 430 and 432 collectively comprise an address bus which is connected to memory unit 475. Latches 430 and 432 are enabled by the ADDRESS LATCH ENABLE
("ALE") signal produced by microprocessor 420 and applied to the G input terminal of each latch. Pow-er (+5V) is applied to the VCC input terminal of each latch 430 and 432 in parallel with capacitors 434-436. The OC terminals of both latches are con-nected to ground.
Multiplexers 440 and 442 act as an inter-face between 16 manually positioned switches 444, which specify the address of the ECU, and micropro-cessor 420 to enable the information represented by switches 444 to be read by the microprocessor in two successive 8-bit bytes. The signal for selecting ~"SEL") multiplexers 440 and 442 comes from latch 432. The multiplexers are advanced or stepped by the signal applied to their OC terminals from gate array 402. Power (+5V) is supplied to the VCC termi-nals of multiplexers 440 and 442 in parallel with capacitors 445-447. Pull-up resistor networks 448-449 are conventionally connected between the +5V

power supply and the data input leads of the multi-plexers.
Microcomputer 450, which can be a conven-tional microcomputer such as Intel part number 8472, performs such functions as (1) controlling communi-cations with the subscribers via the drop cables, (2) controlling the tuner/converters in the SUs, and (3) communicating with microprocessor 420. Micro-computer 450 is connected to the data bus via its D0-D7 leads. The VDD, VCC, and SS leads of micro-computer 450 are connected to the +5V power suppl-y in parallel with capacitors 451 and 452. The A0 lead is connected to the SEL input terminals of mul-tiplexers 440 and 442. The P25, P24, and CS leads are connected directly to microprocessor 420 as men-tioned above. The RESET, WRITE ("WR"), READ ("RD"), XTAL2, XTAL1, and Tl leads are connected to gate array 402. The RD lead is also connected to memory unit 55b. The signals on the XTALl and XTAL2 leads determine the operating frequency of microcomputer 450. Pull-up resistor network 453 is connected be-tween these leads and the +5V power supply.
The P20-P23 and PROG terminals of micro-computer 450 are connected to conventional input/output expander 454 which may be Intel part number TMP82C43P. Expander 454 allows a small num-ber of microcomputer input/output terminals to be connected to a larger number of input/output leads.
The EA and VSS leads of microcomputer 450 are con-nected to ground. In a development configuration, the P17 lead of microcomputer 450 is connected via pull-up resistor 455 to the +5V power supply, and via manually operated switch 456 to ground.
Microcomputer 450 receives VLF data from communication unit 56 via its T0 lead. The P16 lead is not used. Six SUBSCRIBER SELECT signals are pro-duced by microcomputer 450 and applied to leads .

P10-P15. Each of these signals is applied to a re-spective one of the six SUs in this ECU in order to select the one or more of the SUs which is to re-spond to the DATA and FUNCTION SELECT signals men-tioned below. The signals on leads T0 and P10-P16 pass through conventional buffering and pull-up re-sistor network 457, which is also connected to the +5V power supply.
The +5V power supply is connected to input/output expander 454 in parallel with capaci-tors 458 and 459. The CHIP SELECT ("CS") and GROUND
("GND") leads are connected to ground. The signal on lead P43 is serial DATA for use by the SU or SUs selected by the SUBSCRIBER SELECT output signals of microcomputer 450. For example, this DATA signal may be the MS coefficients used by the SUs as de-scribed above in relation to the SUs. The signals on leads P40-P42 are the three FUNCTION SELECT sig-nals which are applied to the SUs to control their processing of the above-mentioned DATA signal. The signals on the P60-P63, P70, and P71 leads are re-spectively the six POWER DETECT signals produced by the SUs as described above. As mentioned above, each of these signals indicates whether or not the associated subscriber is supplying his or her share of the total AC power required for operation of the ECU. The signal on the P53 lead is the VLF data signal to be transmitted from the ECU to a selected subscriber's SPU via communication unit 56. The signals on the P50-P52 leads are also applied to communication unit 56 where they are used to control multiplexer 350 which selects the SPU that is to se~d or receive VLF data. The signals on leads P40-P43, P50-P53, P60-P63, and P70-P71 pass through conventional buffering and pull-up or clamping re-sistor network 460. Leads P72 and P73 are respec-tively connected to ground via manually operated switches 461 and 462 and to the +5V power supply via pull-up resistor network 463, Switches 461 and 462 allow the ECUs in the system to be grouped in up to four different addressable banks.
Back-up power supply 464 operates during a total AC power failure to prevent loss of data in an essential portion of memory unit 55b, i.e., the por-tion of the memory unit selected by the LOWER CHIP
SELECT ("LCS") signal. A back-up power supply includes conventional hex inverting buffer 465, re-sistors 466-469, capacitors 470-472, diode 473, and inductor 474. Buffer 465 may be Toshiba part number TC40H368P or an equivalent device. The back-up pow-er is actually derived from capacitor 471 which is a relatively large storage capacitor. While the AC
power is on, capacitor 471 is charged from the +5.7 volt power supply via the circuit including elements 468, 469, and 472-474. During an AC power interrup-tion (as indicated by the reset signal applied to the lA input terminal of buffer 465), capacitor 471 supplies +5V back-up power to energize buffer 465, to provide an LCS signal, and to provide +5V power to the portion of memory unit 475 selected by the LCS signal.
Memory unit 55b includes two conventional 16K-byte read only memories ("ROMs") 476 and 477 which store the operating program instructions for microprocessor 420. Each of ROMs 476 and 477 may be Intel part number 27128, or an equivalent device.
Memory unit 55b also includes six conventional 8K-byte random access memories ("RAMs") 493-498 which store the data needed for control of the ECU.
Each of RAMs 493-498 may be Toshiba part number TC5565PL-15 or an equivalent device. The connection of the various elements of memory unit 55b to the remainder of digital unit 55, as well as the ~ 1 338043 inter-connection of the memory unit elements, is entirely conventional and will be readily apparent to those skilled in the art. The UCS, MCS0, and LCS
signals are used to extend the 16-bit address infor-mation to allow use of more memory than can be ac-cessed using only 16 bits. The UPPER BANK SELECT
("BKU") and LOWER BANK SELECT ("BKL") signals pro-duced by gate array 402 are used in combination with jumper network 478 to allow the relative amounts of ROM and RAM to be changed if desired. RAMs 495 and 496 are the memory unit elements energized by back-up power supply 464 in the event of an AC power outage as described above.
VI. Common Power Supply To reduce the amount of power required to be supplied by the CATV system operator, the power required to operate each ECU is supplied by the sub-scribers served by that ECU. This is accomplished by having each master SPU apply a 60-volt AC power signal to the SPU's associated drop cable. As ear-lier described, the AC power signals from each sub-scriber are converted by each subscriber's associated SU into + and - half-wàve rectified DC power signals.
The + and - signals are respectively summed and ap-plied to common power unit 60.
Figure 6 shows common power unit 60 in greater detail. AS shown in Figure 6, the combined + and - power obtained from the SUs is applied to a filter/smoothing circuit 510. Filter/smoothing circuit 510 includes a plurality of filtering capa-citors 514 and 516 to further remove AC ripple from the input power. A pair of series-inductances 512 remove any CATV or VLF communication signals still present with the power signal.
The output of filter/smoothing circuit 510 is a well-filtered but unregulated DC voltage.

` 37 l 338043 This DC voltage output is applied to the input of a conventional switching power supply 520. Switching power supply 520 includes a step-down transformer 522 for producing as an output three AC power sig-nals. These AC power signals are each half-wave rectified by rectifying diodes 532, 534, and 536, respectively. The outputs of diodes 532, 534, and 536 are smoothed and filtered by capacitances 543, 545, and 547 and inductances 542, 544, and 546. The outputs of the capacitance/inductance smoother/filter circuits are each applied as inputs to conventional voltage regulator circuits 530, 540, and 550, respec-tively. Voltage regulator circuits 530, 540, and 550 regulate the voltage appearing at their inputs to DC voltage levels of 27 volts, 12 volts, and 5 volts, respectively. These output voltages are each further filtered by output capacitors 570, 572, and 574. A fourth regulated output of 5.7 volts is ob-tained from the circuit comprising series-pass transistor 560, diode 562, and Zener diode 564. The output signal of inductor 546 is also used as a RESET
signal for indicating an AC power failure. This RESET signal is applied to the POWER DETECT input terminal of digital unit 55 as described above.
The regulated DC output voltages of common power supply 60 are used to power the circuitry of the associated ECU. Thus, +5V, +12V, and +27V sig-nals are applied from common power supply 60 to each subscriber unit (Figure 2), as well as to analog unit 54 (Figure 3), communication unit 56 (Figure 4), and digital unit 55 (Figure 5). To ensure that each subscriber equitably shares in providing power to op~rate the ECU associated with that subscriber, each SU includes power detection circuitry, earlier described, to turn the SU off in the event that AC

_ 1 338~43 power is not being received from the drop cable as-sociated with the SU.
VII. Subscriber Processing Unit Subscriber processing units (SPUs) are located within subscriber residences. Each SPU is designed to (1) accept and transmit to its associated ECU subscriber-entered data, such as channel tuning requests, pay-per-view requests, parental control requests, and other functions normally associated with the television viewer, and (2) receive data~and commands from the ECU to display information to a subscriber and control on and off the operation of the subscriber's television receiver. In addition, each SPU may serve as a data input terminal to accom-modate audience response, shop-at-home, and other occasional two-way activities. Figure 7 shows a typical master SPU in detail.
As shown in Figure 7, a typical master SPU
is çonnected via plug 761 to a source of subscriber-supplied 120-volt AC power. Transformer 762 steps down this power for use by the SPU. Conventional rectifier and smoothing network 760 rectifies the AC
power for application to conventional voltage regu-lator circuit 764. Voltage regulator circuit 764 supplies as an output ("+") all necessary regulated DC voltages required to operate the circuitry of the SPU.
In addition to supplying AC power to rectifier/filter 760, transformer 762 provides as an output a source of 60 volt, 60 Hz AC power for application to the drop cable connecting the SPU to its associated ECU. For this purpose, transformer 762 includes a separate secondary winding connected to capacitor 761 and inductor 763. Inductor 763 presents a high impedance to the relatively high frequency CATV, VLF, and reverse HDRC signals, but presents a low impedance to the lower frequency AC
power signals. AC power signals are tapped off from inductor 763 and applied to terminal 767 to which is connected the drop cable. Thus, each subscriber, via the master SPU in the subscriber's residence, provides a share of the total power required to op-erate the ECU to which the subscriber's SPU is con-nected. If the SPU of Figure 7 were a slave SPU, inductor 763 would be removed so that only the sub-scriber's master SPU would supply power to the drop cable.
Drop cable terminal 767 is also connected to one terminal of conventional directional cou-pler 778 through capacitor 765. Capacitor 765 presents a high impedance to 60 Hz AC power signals, but a low impedance to the higher frequency CATV, VLF, and reverse HDRC signals. Another termi-nal of directional coupler 778 is connected via combiner 779 to a terminal ("TV") to which the sub-scriber's television receiver 90 (Figure 1), optional FM audio receiver equipment, and optional forward HDRC utilization equipment are attached. In this way, CATV signals (including television, FM audio, and forward HDRC signals) received from the ECU are transmitted to the devices which utilize those signals. Combiner 779 adds the reverse HDRC signal for application to the drop cable. Although in the preferred embodiment, a subscriber's television, FM
audio and HDRC equipment are connected to the drop cable via connection to the SPU, it will of course be appreciated that such equipment may instead be connected to the drop cable without direct connec-tion to the SPU by utilizing a conventional direc-tional coupler and capacitor. Thus, the present invention provides subscribers with great flexibility in variously locating the SPU and the subscribers' television apparatus and other equipment within the subscribers' premises.
The terminal of directional coupler 778 connected to the TV and FM audio terminal is also connected to the input of conventional VLF demodu-lator 770. Demodulator 770 receives signals trans-mitted from the ECU, including CATV and VLF communi-cation signals. As already described with respect to an embodiment of the ECU, ECU-to-SPU VLF communi-cation signals are ASK-modulated signals having a carrier frequency of 430 KHz. This carrier signal is on continuously except when data is being trans-mitted Demodulator 770 demodulates the applied ECU-to-SPU VLF signals to produce serial digital data as an output. This is accomplished in one em-bodiment by parallel tuned LC circuit 776 which is tuned to 430 KHz. Conventional amplifier/filter circuit 774, which in one embodiment uses a surface acoustic wave ("saw") filter as the filtering ele-ment, receives the output of circuit 776 to provide an output only when 430 KHz carrier is detected.
The output from circuit 774 is then applied to opera-tional amplifier 772 which produces an output that is high or low in response to the presence or ab-sence, respectively, of a signal from amplifier/fil-ter 774 Operational amplifier 772 thus produces a digital data output representative of the informa-tion transmitted to the SPU from the ECU via the VLF
signal.
The digital data output of demodulator 770 is applied to a data input line and to an interrupt input line of conventional microcomputer 700 Micro-computer 700 may be any suitable commercially avail-able microprocessor or microcomputer such as Toshiba part No TMP 4740P, which is 4-bit microcomputer having 4k bytes of on-board ROM and 256 bytes of on-board R~M memory An object and source code ~' computer program listing which will be readily under-stood by those s~llled in the art suitable for con-trolling the operations of microcomputer 700 is annexed hereto at Appendix A.
Microcomputer 700 utilizes data received from the ECU to display information on conventional 7-segment display 710. In one embodiment, display 710 is capable of displaying two decimal digits representative, for example, of the television chan-nel to which the associated SU in the ECU is tuned.
Microcomputer 700 drives display 710 in a conven-tional manner by multiplexing display data onto a common seven-line bus Bl and alternately enabling two return lines A and B. Resistor-pack 712 in-cludes seven resistors, each resistor being in se-ries with a line of bus Bl to provide current limiting for display 710.
Microcomputer 700 also utilizes data re-ceived from the ECU to illuminate a so-called order event lamp. In one embodiment, the order event lamp is a conventional light emitting diode (LED) 790 connected to microcomputer 700 via current limiting resistor 792. As described in greater detail below, the order event lamp may be utlized to inform the subscriber that the subscriber is viewing a program for which the subscriber will be charged an additional fee.
Another circuit element controlled by micro-computer 700 is television power relay 791. Tele-vision power relay 791 is a normally-open relay which controls the application of 120-volt AC power to power outlet 793, into which the associated tele-vision receiver 90 is plugged. Relay 791 is con-trolled on and off on command from the ECU
Also connected to microcomputer 700 is keyboard 720 for use by the subscriber, for example, in entering channel selection requests In one em-` -42- ~ 338043 bodiment, keyboard 720 is a conventional membrane matrix keyboard having four columns and four rows.
A common bus B2 having eight lines connects the key-board's row and column outputs via resistor pack 722 to corresponding inputs of microcomputer 700. In addition to keyboard 720, an optional remote control unit ("RCU") may be used to enable a subscriber to remotely enter data into the SPU (see Figure 1).
Such an RCU may be of any type, wired or not. In one embodiment, the RCU is a conventional wireless device which communicates with the SPU by transmi~-ting coded infra-red light. In the SPU, conventional remote control receiver 730 having a photo-diode sensitive to infra-red light receives these coded signals and converts them into serial digital data.
This data is then provided to microcomputer 700.
Microcomputer 700 communicates subscriber-entered channel and other requests to the attached ECU by sending digital data to VLF modulator 740.
The digital data turns transistor 742 on and off via current-limiting resistor 783. In turn, transistor 742 turns on and off FET transistor 746 via resistors 743, 745, 747, and 749. FET transistor 746 controls on and off the output of continuously operating 468 KHz oscillator 744 to ASK modulate a 468 KHz signal.
Saw filter 748 provides bandpass limiting for the modulated output of modulator 740. The output of saw filter 748 is applied to an emitter-follower circuit comprising transistor 750 and resistors 752-755. Capacitor 751 blocks DC voltage. The output of the emitter-follower circuit is applied through capacitor 757 and resistor 756 to a terminal of directional coupler 778. The VLF modulated signal is then applied from directional coupler 778 to the drop cable for transmission to the attached ECU
on the SPU-to-ECU communication channel.

For enabling each of a plurality of SPUs (i.e., a master SPU and one or more slave SPUs) con-nected to a drop cable to selectively communicate with the ECU, each SPU is given a unique address at the time the SPU is installed in the subscriber's residence. This is accomplished by placing appro-priate jumper wires in jumper block 782. Jumper block 782 has 2 jumper connections, each representing one bit of a 2-bit address. By selectively jumping the terminals in jumper block 782, each SPU attached to an ECU may be assigned any of 4 different addres-ses. In addition, switch 780 serves to identify the SPU depending on whether the switch is opened or closed as either a master SPU associated with a pri-mary SU in the ECU, or a slave SPU associated with a secondary SU in the ECU. Typically, the master SPUs are assigned binary address 00 in jumper block 782, and slave SPUs are assigned any address 01, 10, or 11 in jumper block 782.
Communication between the ECU and its as-sociated SPUs is via separate transmit and receive channels over the drop cable. As mentioned above, the first channel, the ECU-to-SPU channel, is a VLF
channel having a carrier frequency of 430 KHz. The second channel, the SPU-to-ECU channel, is a VLF
channel having a carrier frequency of 468 KHz. Both channels carry data at a rate of 1200 bps, although other convenient data rates may be used. Each SPU
associated with an ECU transmits data to the ECU on the common SPU-to-ECU channel. Similarly, the ECU
transmits data to each associated SPU on the common ECU-to-SPU channel.
VIII. Head End Elements 34 and 36 of head end 12 are shown in greater detail in Figure 8. The forward and reverse data signals on cable network 14 are ` -44- 1 338043 coupled to combiner 800 by combiner 32. Combiner 800 applies the forward data signal from the modu-lator portion 810 of modem 34 to combiner 32, and applies the reverse data signal from combiner 32 to the demodulator portion 840 of the modem.
Central control computer 36, which may be any suitable computer such as a conventional Intel 330 computer, includes conventional main central processing unit ("CPU") 880, conventional main memory 882, conventional output buffer unit 884, and four conventional main input buffer units 886-889.
All of elements 880, 882, 884, and 886-889 are con-ventionally interconnected via communications bus 890.
Depending on the data rates and the speed of operation of buffer units 884 and 886-889, it may be possible to combine the functions of units 884 and 886-889 into a smaller number of buffer units. Main CPU 880 includes or is coupled to conventional input/output devices (not shown) for use by the operators of the system to control the system.
Each of buffer units 884 and 886-889 in-cludes a conventional high level data link ("HDLC") controller portion, a conventional CPU portion, and a conventional memory portion. The HDLC controller portion of output buffer unit 884 converts parallel forward data originated by main CPU 880 to a serial NRZI forward data signal. This forward data signal is applied to conventional EIA RS 422 interface device 812 in the modulator portion 810 of modem 34.
Interface device 812 applies the forward data signal to conventional TTL buffer 814. TTL buffer 814 ap-plies the forward data to PIN diode switch 816 which frequency modulates the forward data signal by switch-ing back and forth between 103.9 MHz and 104.1 MHz oscillators 818 and 820 in accordance with the applied data signal. The frequency modulated forward data signal is applied to surface acoustic wave bandpass _ I 338043 filter 822 and then to combiner 800 for application to cable network 14 via combiner 32.
Considering now the elements which re-ceive, demodulate, and process the reverse data sig-nals, it will be recalled that there are four reverse data channels having frequencies of 19.125 MHz, 19.375 MHz, 19.625 MHz, and 19.875 MHz, respectively, and that the reverse data is in NRZI
protocol. All of these reverse data signals are passed through conventional bandpass filter 842 and conventional preamplifier 844. The output signal of preamplifier 844 is applied to four similar demodu-lator circuit paths, only one of which is shown in detail in Figure 8. Each of these circuit paths demodulates the reverse data signal in a respective one of the reverse data channels.
In each of the above-mentioned circuit paths, the reverse data signal is mixed by mixer 850 with the output signal of local oscillator 852 having a frequency selected such that the associated reverse data channel signal frequency minus the local oscil-lator frequency equals 10.7 MHz. Mixer 850 therefore shifts the associated reverse data channel signal to 10.7 MHz. The output signal of mixer 850 is applied to bandpass filter 854 which eliminates all signals other than the 10.7 MHz modulated signal. The output signal of bandpass filter 854 is applied to conven-tional intermediate frequency ("IF") amplifier 856.
IF amplifier 856 is augmented by conventional carrier detector device 858 which applies a request to send ("RTS") output signal to conventional EIA RS 422 interface device 866 whenever a 10.7 MHz signal is detected. Conventional Costas loop device 860 con-verts the 10.7 MHz data signal to a baseband data signal which is applied to interface device 866.
The baseband data signal is also applied to program logic array 862 which uses the data signal and the -46- l 338043 higher frequency output signal of oscillator 864 to produce a clock signal pulse during each bit interval in the associated NRZI data signal. This clock sig-nal is also applied to interface device 866.
Interface device 866 applies the carrier detect, clock, and NRZI data signals to the associ-ated input buffer device 886-889. The HDLC control-ler portion of the buffer device converts the serial NRZI data to parallel data suitable for further processing by central control computer 36.
IX. ECU Operation Microprocessor 420 (hereafter sometimes the "Data Processor"~ is responsible for controlling the overall operation of the ECU. This responsibility includes communicating with the CCC at head end 12, initiating, implementing and coordinating various operations within the ECU, and communicating with the SPUs. The Data Processor is aided in its func-tions by microcomputer 450 (hereafter sometimes the "Drop Processor"). The Drop Processor is responsible for transmitting to associated SPUs messages origi-nated by the Data Processor, and for transmitting to the Data Processor messages originated by the SPUs.
In addition, the Drop Processor on command from the Data Processor controls various functions associated with the SUs of the ECU. The operations of the Data Processor and Drop Processor in communicating with the CCC at head end 12 and with associated SPUs, and in implementing and controlling various ECU functions, will now be described.

A. ECU/SPU Communication Protocol The communication protocol between an ECU
and its associated SPUs must allow for the prompt detection and servicing of channel selection, pay-per-view requests and other subscriber-originated ~47- t 338043 requests from any of a plurality of SPUs (both mas-ter and slave) associated with any of up to six drop cables. Moreover, the communication protocol must be capable of detecting requests which are sporadic and infrequent.
1. ECU/SPU Polling To ensure the prompt servicing and pro-cessing of subscriber-entered SPU requests, communi-cation access to the ECU is controlled by the ECU's digital unit 55 using a two~level polling scheme.
The first level is called "drop polling", and per-mits a very rapid polling or sensing of each drop associated with the ECU to identify a drop which has an sPu in need of service li.e., having information to transmit to the ECU). Drop polling is accom-plished without transmitting or receiving any data over the relatively low-speed (in one embodiment, 1200 bps ) ECU/SPU data link.
Once a particular drop has been identified by the ECU as requiring service, and if necessary because of the existence of more than one SPU at-tached to the drop, the ECU uses a second level of polling, called "device polling", to differentiate between SPUs. In this event, the communication link is used to specifically address each SPU attached to the drop to determine which SPUs require service.
The ECU maintains maps in its memory of each drop, and of each device on each drop. The data of each map i5 in a predetermined order so as to optimize response times or to give priority to certain SPUs.

Drop Polling Drop polling is controlled by microcompu-ter 450 in ECU digital unit 55 (Figure 5e) and multiplexer 350 in communication unit 56 (Figure 4).
If an SPU requires service (e.g., a subscriber has entered a channel request into the SPU's keyboard), SPU microcomputer 700 causes VLF modulator 740 to transmit a continuous 468 KHz carrier signal to the ECU. This continuous carrier signal is called a "cry" or "Service Request" signal. At the ECU, micro-computer 450 selects a drop by sending a drop ad-dress code to multiplexer 350 via the multiplexer's address lines A, B and C (Figure 4) to selectively connect the ECU's VLF modulator 320 and demodulator 340 to a particular one of the six drops. Once con-nected to a drop via multiplexer 350, ECU digital unit 55 listens for the presence of carrier signal ~a Service Request) on the drop. If carrier signal is present on the drop and detected by the ECU, this is interpreted by the ECU to mean that an SPU on the drop requires service. If no carrier signal is de-tected on the drop, the ECU interprets this to mean that no SPUs on the drop require service. In this latter event, the ECU (via multiplexer 350) selects another drop in a predetermined sequence, and listens for the presence of carrier on that drop. If carrier is present, then an SPU attached to the drop requires servlce.
It should be noted that SPUs on the several drops request service simply by activating carrier on the SPU-to-ECU drop cable communication channel.
It is not necessary for an SPU to transmit to the ECU any data or special commands to obtain service, thus allowing for very fast polling. To prevent any interference with communications already taking place on the drop, each SPU connected to the drop continu-ously monitors the ECU-to-SPU channel for the presence or absence of data. An SPU will activate carrier to transmit a Service Request only after the SPU has detected a predetermined number of (e.g., twelve) bit times of a continuous mark condition on the ~49~ ~ 338043 ECU-to-SPU channel. This verifies to the SPU that there is no other communication on the drop cable.

Device Polling Device polling is also controlled by mi-crocomputer 450 in the ECU. As described above, if more than one SPU is attached to a drop on which a Service Request is detected, the ECU must individu-ally poll the SPUs on the drop to determine which SPU has requested to communicate with the ECU. Ir-respective of which SPU on the drop first requested service, device polling will occur in a predeter-mined order established by the ECU.
The ECU initiates device polling by trans-mitting conditional poll commands on the selected drop.
All SPUs and other de~ices connected to the selected drop sense these commands and cease any activity (i.e., carrier transmissions) on the SPU-to-ECU
link. The particular SPU being polled responds to the ECU with a single mark bit if the SPU does not require service. If the polled SPU requires service, the SPU responds by transmitting to the ECU an acknow-ledgement (a space bit) followed by data.

2. ECU/SPU Message Formats The communication of messages between an ECU and its associated SPUs is asynchronous with uniform bit timings and non-uniform, indeterminate character timings. The ECU-to-SPU link completely controls data transfers on the SPU-to-ECU link.
Each character transmitted to the SPU by the ECU is acknowledged by the SPU with a one-bit acknowledged/not acknowledged ("ACK/NAK") handshake. This bit is also used for a poll response, as earlier described.
Each character is preceeded by at least one bit time of mark state. A mark-to-space transition resulting in a start bit in a space state initiates the character.

The next bit is a message framing bit, then eight data bits (transmitted low-order bit first), a parity bit, and at least one bit time of mark condition as an ending. The ending bit time of mark condition also serves as a lead-in to a possible subsequent character.
Character Framing Character framing is established by the SPU sensing on the ECU-to-SPU link at least a prede-termined number (e.g., twelve) bit times of a con-tinuous mark condition followed by a mark-to-space transition resulting in a start bit. If an SPU los-es character framing it will not recognize any com-mands until character framing is re-established by the ECU. The ECU periodically allows a given drop the opportunity to re-establish character framing by enforcing periods of continuous mark condition.

Message Framing The manner in which a message character (data~ is to be interpreted by an SPU is determined by the state (mark or space) of the message framing bit. The beginning of a message is indicated by a space condition (logical zero) in the message fram-ing bit. A logical zero message framing bit means that the data field (8 bits) represents a command which all SPUs on the drop must interpret. On the other hand, if the message framing bit is in a mark condition (a logical one), then the data field is interpreted as cont~ining subsequent information to a previous command. Any number of message charac-ters can occur between command bytes. The incorpo-ration of the message framing bit, although adding l/llths overhead to each message character, increas-es framing integrity and permits increased through-put when long data streams are encountered.

1 33~304~
_ -51-Without the message framing bit, the transmission of long data streams to or from an SPU would be cur-tailed or precluded in view of the need for the ECU
to be able to rapidly poll and service up to 6 drops, each drop potentially having a plurality of SPUs. By utilizing the expedient of a message framing bit, the ECU may perform drop polling or even service other SPUs on other drops during the interstices between character transmissions to a specific SPU on a particular drop.
ACK/NAK and Poll Responses The bit time immediately following the parity bit is used as an ACK/NAK window on the SPU-to-ECU link. Each character transmitted by the ECU
is acknowledged by the SPU during the ACK/NAK win-dow. This ACK/NAK window is also used in a special manner to respond to polls.
SPUs respond to the ECU during the ACK/NAK
window as follows. Upon the receipt of an initial message start bit, all SPUs on the drop turn off carrier on the SPU-to-ECU link. Upon receipt of the message framing bit, if the bit is a space, all SPUs input the data bits (which represent a command) to check for the presence of their address. If the message framing bit was a mark, then only the previ-ously addressed SPU on the drop inputs the data bits.
Upon receipt of the last data bit, the addressed SPU turns on its carrier on the SPU-to-~CU
link. Upon receipt of the parity bit, if the parity bit indicates an error in transmission, then the SPU
leaves its carrier on during the next bit time as a NAK signal to the ECU. If the parity bit indicates correct transmission, then the SPU turns its carrier off and maintains the carrier off during the next bit time as an ACK signal to the ECU.

If the data is a correctly transmitted poll, then the polled SPU after receipt of the pari-ty bit turns its carrier off by transmitting the start bit of the information it has to transmit to the ECU. Otherwise, carrier is maintained on during the ACK/NAK window. One bit time after receipt of the parity bit (i.e., after the ACK/NAK window), all SPUs turn carrier off in preparation for another transmission to or from the ECU.
B. ECU/SPU Messages Communications from the Data Processor to the Drop Processor are in the form of variable length messages representing commands which the Drop Processor executes. Execution by the Drop Processor of a Data Processor command normally follows a hand-shaking sequence requiring the Drop Processor to return a command response to the Data Processor.
This command response may be a single byte acknowl-edgment, or a multiple byte response if the Data Processor command requires a return of data. Howev-er, if the Data Processor command requires the Drop Processor to send a message to a device attached to a drop cable, as described below, a command response may not be required.
In addition to command responses, informa-tion may be passed to the Data Processor from the Drop Processor without any commands having been issued by the Data Processor. Such a transfer would occur, as further described below, in the event that a device attached to a drop cable transmits a Service Request to the ECU. In such an event, the Drop Processor will read data from the device requesting service and pass the information to the Data Processor as an Unsolicited Data Response.
The following table sets forth the Data Processor/Drop Processor communication commands uti-`~ 1 }38043 lized in one embodiment of the invention. Commands having an asterisk are sent from the Drop Processor.
The other commands are sent from the Data Processor.

TABLE C
COMMAND (HEX) FUNCTION
00 Reset drop processor.
01 Read power detect and bank address.
03 Change tuner frequency (channel select).
04 Send message to attached device.
05 Turn converter on/off and select cable A
or cable B.
07 Define drop poll sequence.
08 Define device poll sequence.
84* Unsolicited Data Response from attached device.

Briefly, the commands set forth in Table C
operate as follows:
Command 00. This is a one-byte command message used by the Data Processor to reset the Drop Processor and to initialize its registers and point-ers. All polling activities are discontinued. The Drop Processor acknowledges receipt of this command by returning to the Data Processor a single command response byte equal to 00.
~ Command 01. This is a one-byte command message used by the Data Processor to cause the Drop Processor to read the state of the six power detect lines (POWER DET, Figure 2) from the subscriber units SUl, SU2, etc., and to read the bank to which the ECU's address is assigned. The response sent by the Drop Processor to this command comprises two bytes. The first byte echoes the command byte (01).
The second byte is a data byte which specifies the state of each of the POWER DET lines and the ECU's bank address. For each of the POWER DET lines of the six subscriber units, corresponding bits 0-5 of the response byte are set to 1 or 0 depending res-pectively on whether or not power is being supplied to the drop cable by the subscriber connected to that subscriber unit. Bits 6 and 7 of the response data byte specify to which one of four banks the ECU's address is assigned.
Command 03. This is a four-byte command message used by the Data Processor to cause the Drop Processor to tune any of the ECU's six associated SUs to a specified physical channel. The first byte is the command byte (03). Next are three bytes of data. The first byte specifies in bits 0-2 which one of the six SUs is to be tuned. The next two bytes specify the two MS numbers, earlier described, which are required by the circuitry of the SU's tuner/converter to tune to a particular physical television channel. The Drop Processor sends a two-byte command response to the Data Processor upon receipt of the command echoing the first two bytes of the command message.
Command 04. This command message (hereaf-ter the "04 Command") is used by the Data Processor to cause the Drop Processor to send an addressed message to a device attached to a drop cable. In one embodiment, the device may be an SPU having an address equal to 2, 3, 4 or 5, or the device may be some other type of apparatus attached to the drop cable and capable of communicating with the ECU.
Examples of such other devices are medical monitor-ing equipment, fire alarms, smoke alarms, burglary " - 1 338043 alarms, and so forth. Such other devices may have addresses equal to 0, 1, 6 or 7.
The 04 Command message to the Drop Processor includes at least four bytes, as follows:
(1) in the first byte, the command code (04), (2) in the second byte, the drop number (bits 0-2) and the device address from 0-7 (bits 3-7), (3) in the third byte, the number of bytes contained in the message, and (4) in the fourth byte, a device command. Fol-lowing the device command byte are one or more data bytes. The device command and data bytes together comprise the message. The device command byte in-cludes a 3-bit device address (bits 0-2) and a 5-bit function code (bits 3-7). The function code is used to command a particular operation in the addressed device. The following table sets forth the function codes used to control SPU or device operation in one embodiment of the invention:

TABLE D
FUNCTION CODE DEVICE
(HEX) OPERATION
00 Read internal status, and return a response message to the ECU.
01 Turn on or off the order event lamp.
02 Set the order-event lamp to flashing or non-flashing mode.
03 Enable or disable data input to the device.
04 Enable or disable data output from a device.
05 Turn the television power relay on or off.
06 Blank the display.
07 Set the display to flashing or non-flashing mode.
08 Display a character in the right-most position of the display.
09 Transmit a number of characters to the ECU as specified by the byte count of the 04 Command message.
OA Display a character at a specified position of the display.
OB Conditional poll to determine the identity of the device sending a Service Request.
The device returns its data.

If the device message requires the device to return a response to the ECU (e.g., in response to function codes 00, 09, or OB), a command response (hereafter the "04 Response") is returned from the Drop Processor to the Data Processor. This response includes a three-byte response header followed by one or more data bytes. The response header in-cludes: (1) in the first byte, a command response code (hex 04), (2) in the second byte, an echo of the drop and device address byte originally sent by the Data Processor, and (3) in the third byte, the number of bytes of data in the response message.
Assuming no transmission errors occurred, following the response header are one or more response data bytes. The data byte of an error-free 04 Response to a conditional poll, for example, may identify the key which the subscriber has depressed. Or, in the case of an error-free 04 Response to a status request message, the data byte may specify by its bit set-tings the device status as follows: the device is a master or slave SPU (bit 7), the order event lamp is flashing (bit 5), the order event lamp is on (bit 4), the television power relay is on (bit 3), there has been recent power on (bit 2), a key has been recently depressed (bit 1), and a new character is available (bit 0). If a transmission error occurred, the byte count is 00. In this event, a single data byte fol-lows the byte count to specify an error code. The error code may be 01 (indicating an ECU-to-device transmission (parity) error), 02 (indicating a de-vice-to-ECU transmission (parity~ error), or 03 (in-dicating an invalid device response). Error codes are sent to the Data Processor only after the occur-rence of five consecutive link transmission errors.
Command 05. This command is used by the Data Processor to cause the Drop Processor to turn on or off a particular SU and, in a two-cable system, to cause the SU to select either cable A or cable B.
The command message includes two bytes. The first byte is the command code byte (hex 05). The second byte specifies (1) the SU (bits 0-2), (2) the se-lected cable (bit 6 is set to 0 or 1 to select cable A or B, respectively), and (3) whether to turn the SU unit on or off (bit 7 is set to "0" or "1", res-pectively). A two-byte command response is returned to the Data Processor by the Drop Processor. The first byte echoes the command byte (05). The second byte includes in bits 0-2 the SU address contained in the command message.
Command 07. This command is used by the Data Processor to load a drop polling map into the Drop Processor to define the drop polling sequence.
The command message includes five bytes. The first byte is a command code byte (hex 07). Bytes two through four specify the drop polling sequence.
Each of these bytes is divided into two nibbles of four-bits per nibble. The value of each nibble is set from 0-5 to specify in each nibble a particular drop. Drops are sequentially polled in the order specified by the nibbles as received by the Drop Processor from the Data Processor. A value of hex F
in a nibble indicates the end of the polling map.
If all nibbles contain hex F, drop polling is dis-abled. The fifth byte would include an F in its high order nibble to indicate the end of a polling map for six drops. A one-byte command response (07) is sent by the Drop Processor to the Data Processor echoing the command code byte.
Command 08. This command is used by the Data Processor to load a device polling map into the Drop Processor to define the device polling sequence.
This command message includes seven bytes. The first byte is the command byte ~hex 08). The second byte specifies the drop in bits 0-2. Bytes three through six specify in each of eight nibbles a device address.
Devices on the specified drop are sequentially polled in the order specified by the device address nibbles as received by the Drop Processor from the Data Pro-cessor. A value of hex F in a nibble indicates the end of the device polling map. If all entries in the device polling map are set to hex F, device pol-ling is disabled. The seventh byte would include an F in its high order nibble indicating the end of a device polling nap for eight devices. A two-byte command response is sent by the Drop Processor to the Data Processor echoing the first two bytes of the Data Processor's command message.
Command 84. This command (hereafter the "84 Command") is sent from the Drop Processor to the Data Processor indicating the receipt by the Drop Processor of unsolicited data from a device attached to a drop cable. The 84 Command is used by the Drop Processor to transmit to the Data Processor data received from a device which has transmitted a Service Request to the ECU (e.g., a subscriber has entered a channel selection request via SPU keyboard).
This command message includes at least four bytes.
The first byte contains the command code (hex 84).
The second byte specifies the drop address (bits 0-2) and the device address (bits 3-7) to identify the particular drop and device sending the Unsoli-cited Data Response. The third byte specifies the number of data bytes being sent by the device.
Finally, the fourth byte is a data byte. If the byte count is 00, an error has occurred. In such a case, an additional byte follows the data count byte specifying an error code. An error code of 01 in-dicates an ECU-to-SPU transmission (parity) error.
An error code of 02 indicates an SPU-to-ECU trans-mission (parity) error.

. _ C. Drop Processor Operation Figures 9a-9b illustrate flow charts of a computer program utilized in one embodiment of the invention for controlling the operations of the Drop Processor. An object and source code computer pro-gram listing which will be readily understood by those skilled in the art for controlling the opera-tions of the Drop Processor in accordance with the flow charts of Figures 9a-9b is annexed as Appendix B.
The program controlling the Drop Processor includes a Main Routine (Figure 9a) and a Timer In-terrupt Routine (Figure 9b). Each of the two rou-tines runs independently of the other. The Main Routine is periodically interrupted by the Timer Interrupt Routine, in a conventional manner, after a predetermined time period has elapsed as determined by the timing out of an interrupt timer. The func-tion of the Drop Processor Main Routine is to (1) receive data from the Timer Interrupt Routine (e.g., a message from an SPU to the ECU) and send it to the Data Processor, and (2) to send data from the Data Processor to the Timer Interrupt Routine for, ultimately, transmission to SPUs. The function of the Timer Interrupt Routine is to (1) implement drop and device polling, (2) transmit messages to and receive messages from SPUs attached to the drops, and (3) send signals to and receive signals from the SUs.

1. Main Routine As shown in Figure 9a, the program flow of the Main Routine begins at step 901 where various buffers, counters, flags and ports are initialized.
Also at step 901, drop polling and device polling are initialized, and register R5 (described in more detail below) is set to three. At steps 902 and 903, the address for jumping to the Timer Interrupt Routine is set and the interrupt timer is activated.
Initialization is complete when the pro-gram flow advances to step 904. At step 904, the Main Routine interrogates the state of an Input Buffer Full ~"IBF") flag. This flag is associated with a Drop Processor buffer which receives data passed to the Drop Processor from the Data Proces-sor. If the IBF flag indicates that the input buffer is full, the program flow advances to step 905.
Otherwise, the program flow branches to step 906.-Assuming first that the IBF buffer is notfull the program advances to step 906, where the Drop Processor checks a buffer (the 84 Buffer) to determine whether or not a device attached to a drop has sent an Unsolicited Data Response (i.e., an 84 Command). If so, the program advances to step 907 to pass the 84 Command to the Data Processor. Other-wise, the program advances to step 908 where the Drop Processor determines if a device has sent an 04 Response. If "no", the program loops to step 904 to again check the IBF flag as earlier described. If "yes", the program advances to step 909 to pass the 04 Response to the Data Processor. From step 909 (or step 907 if the program advanced to that step), the program loops to step 904.
If at step 904 the IBF flag indicates that the input buffer is now full, the program advances to step 905 where the contents of the buffer are input and the IBF flag is cleared. The program flow then advances to step 910 where the Drop Processor determines what type of command (earlier described) was included in the message sent by the Data Pro-cessor. Depending upon the command, the program at step 910 may branch in any of three directions.
If command 00 (reset) was sent, the program flow advances to step 920, where the Drop Processor _ -62-sends a 00 command response message to the Data Pro-cessor via an output buffer associated with the Drop Processor. The program flow then loops to step 901 to re-initialize the Drop Processor as previously described.
If at step 910 any of commands 00, 03, 05, 07 or 08 was sent by the Data Processor, the program flow advances to step 911. At step 911, the Drop Processor processes the particular command as earlier described. The program flow then advances to step 912, where the Drop Processor sends to the Data Processor an appropriate command response. From step 912, the program flow loops to step 904.
Finally, if step 910 determines that an 04 Command message was sent by the Data Processor, the program flow branches to step 913. At step 913, the Main Routine interrogates a flag indicating the state (empty or full) of an "04 Buffer" associated with the Drop Processor. The 04 Buffer contains data to be sent by the Drop Processor to a device attached to a drop. If the 04 Buffer is empty, the program branches to step 914. Otherwise, the pro-gram branches to step 915.
If the program at step 913 advances to step 914 (i.e., the 04 Buffer is empty), step 914 places data received from the Data Processor into the 04 Buffer. The program flow then advances to step 917, where register R5 is checked. If the contents of register R5 are not equal to 0, the program branches to step 919 to decrement the contents of register R5 by one. Otherwise, the program advances to (l) step 918, where the contents of register R5 are initialized to a value of three and incremented by one, and (2) step 919 where the contents of register R5 are decremented by one.
From step 919, the program flow loops to step 904 to again check the input buffer.

~ 338043 Returning now to step 913, if the 04 Buffer is not empty the program branches to step 915. At step 915, the Main Routine determines whether or not the 04 Buffer contains an 04 Response from an attached device. If "yes", the program advances to step 916 to pass that 04 Response data to the Data Processor.
From step 916, the flow advances to step 914 to input the data received from the Data Processor. On the other hand, if "no" at step 915, the program advances to step 921 where the contents of register R5 are checked. If the contents of register R5 are not equal to 0, the program loops to step 913 to again interrogate the state (empty or full) of the 04 Buffer. Otherwise, the program from step 921 ad-vances to step 922 to check the state of the 84 Buffer. If the 84 Buffer is empty, the program im-mediately loops to step 913. However, if the 84 Buffer contains data at step 922, the program ad-vances to (1) step 923 to pass the data to the Data Processor as an 84 Command, (2) step 924 to reset the R5 register to a count of three. The program then loops to step 913.

2. Timer Interrupt Routine A flow chart of the Timer Interrupt Rou-tine is illustrated in Figure 9b. As shown in Figure 9b, the Timer Interrupt Routine starts at step 950 to initialize the drop and device maps and clear various flags and buffers. The program then advances to step 951, where a determination is made as to whether ("yes") or not ("no") a Service Re-quest exists on the drop to which the Drop Processor is connected via multiplexer 350 (Figure 4).
Assuming first that no Service Request is detected at step 951, the program branches to step 966 where the 04 Buffer is checked to determine whether or not the ~rop Processor has received an 04 Command from the Data Processor for transmission to a device attached to a drop cable. If not, the pro-gram advances to step 960 to update the drop polling map pointer. If the pointer is not pointing to the end of the drop map, the program increments the drop map pointer in step 965, initializes the device map pointer to the beginning of the device map, and loops to step 951 to listen for the presence of a Service Reguest on another drop. On the other hand, if at step 960 the program determines that the drop pointer is at the end of the drop map, the pro-gram advances to step 961 to reset the drop map pointer to the beginning of the drop map prior to advancing to step 962 and then to step 951 as de-scribed above.
Returning to step 966, if the 04 Buffer contains an 04 Command to send to a device, the pro-gram flow advances to step 973 after setting a flag ("1") in step 967. At step 973, the Drop Processor transmits the 04 Command message to the appropriate device. The program then advances to step 974 to determine whether or not a transmission error occurred.
If an error occurred, the program branches to step 972.
If less than five errors have occurred, the program advances from step 972 to step 973 to re-transmit the 04 Command. On the fifth error, however, the program branches from step 972 to step 975 where an 04 Response cont~;ning an appropriate error code is transmitted from the Drop Processor to the Data Pro-cessor as earlier described. From step 975 in the event of an error, or step 974 in the event of no error, the program advances to step 976 to check the state of the "1" flag. Because the program advanced from step 967, the "1" flag will earlier have been set. Accordingly, the program from step 976 advances to step 960 to increment or initialize the drop map pointer as previously described.

_, Assuming now tha~ a Service Request is detected at step 951, the program advances to step 952 where a conditional poll command (earlier des-cribed) is transmitted on the drop on which the Ser-vice Request was detected. At step 953, the Drop Processor determines whether an ACK or a NACK
learlier described) is returned in response to the poll. Assuming first that a NACK is returned, the program branches to step 968 to determine whether or not a transmission error occurred. If "yes", the program advances to step 969 to return an appro-priate error code to the Data Processor. Otherwise, the program advances to step 970 to determine whether or not an 04 Command has been received from the Data Processor for transmission to a device. If "yes", the program advances to step 973 to transmit the 04 Command as previously described. Otherwise, the program advances to step 959 to determine whether or not the device map pointer is at the end of the de-vice poll map. If the program is not at the end of the device map, the device map pointer is incremented at step 963 and a conditional poll command to the next device is sent at step 952. If the program is at the end of the device map, the program advances from step 959 to step 960 to update the drop map pointer and loop as previously described.
Assuming now that an ACK is detected at step 953 (signifying that the polled device has an Unsolicited Data Response to transmit to the ECU), the program advances to step 954 to input the un-solicited data. Steps 955, 956 and 964 determine as previously described with respect to steps 972, 974 and 975 whether or not five transmission errors oc-curred. In the event of five errors, an appropriate error code is sent to the Data Processor at step 964. From step 964 or step 955, the program advances to step 957 to check an output buffer full ("OBF") flag indicating whether the Drop Processor's output buffer to the Data Processor is full or empty. If the buffer is empty, the program advances to step 958 where the unsolicited data is sent to the Data Pro-cessor as an 84 Command via the Drop Processor's output buffer. The program then advances to step 959 to update the drop and device map pointers as previously described. Alternatively, if the output buffer is full at step 957, the program advances to step 971 to determine whether or not the Data Pro-cessor has sent an 04 Commar.d to the Drop Processor for a device attached to a drop cable. If there is no 04 Command to send at step 971, the program loops to step 957. On the other hand, if there is an 04 Command to transmit, the program advances to step 973 to transmit the 04 Command as previously described.
At step 976, because the "1" flag this time is not set, the program loops back to step 957.

D. CCC/ECU Communication Protocol 1. Message Format A typical data message format used in one embodiment of the invention for communicating infor-mation between the central control computer (CCC) at head end 12 and the plurality of ECUs connected to cable network 14 will now be described with refer-ence to Figures 10 and 11.
A basic message format for data communi-cation in the forward direction (i.e., from the CCC
to an ECU) is illustrated in Figure 10a. As shown in Figure 10a, each message is of a predetermined format, comprising: a FLAG byte, two ADDRESS bytes speçifying an ECU address, a BYTE COUNT byte ("N"), a COMMAND byte ("CMD"), a plurality of DATA bytes, two CYCLIC REDUNDANCY CHECK ("CRC") bytes, and ano-ther FLAG byte. Each byte is comprised of 8 bits.

_ -67- 1 338043 The FLAG bytes identify the beginning and end of a message. Each FLAG byte has a unique bit pattern ("O1111110"). At the end of a message, if there are no more messages available for transmis-sion by the CCC, the CCC transmits repetitive FLAG
bytes to maintain synchronization on the communica-tions link. Otherwise, the end FLAG byte serves as the start FLAG byte of the next message.
The two ADDRESS bytes typically specify the address of a particular ECU from 0001 (hex~
through FFFE (hex). The use of two ADDRESS bytes in this matter to specify an ECU address allows the CCC to uniquely address a message to any particular one of 65,534 ECUs. The first address byte (ADH) specifies the high-order part of the address, and the second byte (ADL) specifies the low-order part.
Two addresses have special meanings. Address FFFF
(hex) is a global or broadcast address. All ECUs respond to a message cont~i ni ng the broadcast ad-dress. Address 0000 is a "mask" address, described in detail below.
The BYTE COUNT byte (N) specifies the num-ber of bytes following in the message, exclusive of CRC and FLAG bytes. Following the BYTE COUNT byte is a COMMAND byte (CMD). As discussed in detail below, the COMMAND byte specifies the type of message being transmitted and the manner in which subsequent DATA bytes should be interpreted.
The CRC bytes (CRH and CRL) are two bytes which together form a conventional 16-bit CRC number.
These two bytes are derived from a mathematical mani-pulation of all bits (exclusive of the FLAG bits) preceding the CRC bytes, and serve as a check that the message was accurately transmitted to and received by the ECU. The derivation of the CRC
bytes is accomplished in a conventional manner in accordance with standards promulgated by interna-tional standards organizations, such as the CCITT.
The use of ADDRESS 0000 (the mask address) enables a message to be directed to any particular ECU or group of ECUs. The basic format of a message having an address of 0000 is illustrated in Figure 10b.
As shown in Figure 10b, a message having a mask address equal to 0000 differs from a basic message (Figure 10a) by the inclusion of four additional bytes following the ADDRESS bytes. These four bytes are two MASK bytes ("MH" and "ML") followed by tWQ
REFERENCE bytes ("RH" and "RL"). Any ECU receiving a message having a 0000 mask address will logically AND the ECU's unique address with the values of the MASK bytes. If the result of this logical operation equals the values set forth in the REFERENCE bytes, the ECU will recognize the message as addressed to it and respond accordingly. Otherwise, the ECU will ignore the message. As will be readily apparent to those skilled in the art, the use of the mask ad-dress in this manner allows a single message to be transmitted to any one or a selected group of ECUs.
For example, if the MASK bytes are 0001, and if the REFERENCE bytes also are 0001, then all ECUs having odd addresses will respond to the message. On the other hand, if the REFERENCE bytes are changed to 0000, then all ECUs having even addresses will re-spond to the message.
A basic message format in the reverse di-rection (i.e., from the ECUs to the CCC) is shown in Figure 11, and is similar to the format for forward communication shown in Figure 10a. Thus, unique FLAG ("01111110") bytes are used to identify the beg~nn;ng and end of a message. Following the be-ginning FLAG byte are two ADDRESS bytes which speci-fy the address of the particular ECU sending the message. Next follow a BYTE COUNT byte (N), a ~ 338043 _ -69-COMMAND byte (CMD), and DATA bytes. Two convention-ally derived CRC bytes follow the last DATA byte as earlier described.
Referring now to Figures 12 through 17, there are shown illustrative examples of several typical messages sent between the CCC and an ECU in one embodiment of the invention. The messages of Figures 12 through 17 are formatted in accordance with the basic message formats of Figures 10-11.
- Figure 12 illustrates a WRITE message sent from the CCC to an ECU. The WRITE message may be used to write a program or data to any one or a plurality of ECUs commencing at a specified address in the ECU's memory. The use of the WRITE message in this way enables the cable system operator to add new functions and services to the ECU, or to modify existing ones. Thus, the operation of the cable system may be readily enhanced or modified without having to replace or modify the ECU or SPU hardware.
The WRITE message may be used to implement a variety of functions in an ECU. For example, the WRITE message may be used to download a Channel Author-ization Map in an ECU specifying which television channels each associated subscriber is authorized to view. In one embodiment, the Channel Authorization Map comprises a string of 128 bytes of data stored in the ECU's memory, each byte associated with a different one of 128 so-called logical channels.
A logical channel is that channel which a subscriber requests by entering a channel number into the SPU.
Each of the first six bits of each byte in the Channel Authorization Map is associated with a different one of six SUs. A bit is set to "1" or to "O" depending respectively on whether or not the subscriber asso-ciated with that bit and SU is authorized to view the television channel associated with that byte.
To transmit a Channel Authorization Map to an ECU, a ` - ~ I 33804~

WRITE command may be used specifying the start ad-dress of the map in the ECU's memory and the 128 bytes of logical channel data. The use of the WRITE
command to transmit a new or replacement Channel Authorization Map enables the cable operator to add or delete authorized channels for particular sub-scribers as a function, e.g., of whether or not the subscriber has paid his or her bill, whether the subscriber has requested to subscribe to view addi-tional or fewer channels, and so forth.
As another example, the WRITE command may be used to transmit to an ECU a so-called Channeliza-tion Map specifying a correlation between logical channels and physical channels. As earlier described, physical channels are the channels carried on the CATV feeder cable to which the converter/tuner in the SU tunes in response to subscriber requests to view a particular logical channel. For example, the Channelization Map might correlate logical channel 7 with physical channel 52, logical channel 9 with physical channel 15, and so on. In one embodiment having a single feeder cable, the Channelization Map in each ECU includes 128 bytes of data (in a two cable system, the Channelization Map would include 256 bytes of data). The data are grouped in pairs such that each pair of bytes is associated with a different one of 64 (or 128 in a two cable system) logical channels. Thus, the first byte pair is as-sociated with logical channel 0, the second byte pair with logical channel 1, and so on. Each pair of bytes specifies the two MS numbers, earlier des-cribed, which are the tuning information required by the converter/tuner of each SU to tune to a particu-lar physical channel. By changing the values of the MS numbers in the Channelization Map using the WRITE
message, the CCC can dynamically (i.e., on any given day and at any given time) re-define the logical 1 3380~3 channel/physical channel correlation. This allows the cable system operator to transmit a television program on any available physical cable channel while allowing the subscriber to always view that program by selecting the same logical channel. This is im-portant in situations of large amounts of noise on a particular physical channel which degrades the tele-vision signal. In such an event, the system opera-tor can transmit a new Channelization Map to re-define the physical channel/logical channel correla-tion to associate a less noisy physical channel with the logical channel, and transmit the program on the less noisy channel. The subscriber, however, will still access the channel carrying the program the subscriber desires to view by keying into the SPU
the same logical channel number.
As shown in Figure 12, a WRITE message includes the usual two ADDRESS bytes (ADH and ADL) specifying the particular ECU to which the message is directed, and a BYTE COUNT byte (N) specifying the number of bytes following in the message. Next appears a COMMAND byte equal to hex FC ("11111100").
This COMMAND byte identifies the message as a WRITE
message. After the COMMAND byte is a DATA COUNT
byte (NN) specifying the number of bytes of data contained in the WRITE message to be written to the ECU's memory. Next, two bytes ("MDL" and "MDH") specify in low and high order parts, respectively, the specific ECU memory address at which the write operation should commence. Finally, there follow NN
bytes of data to be written to the ECU's memory.
Another message sent from the CCC to an ECU is a READ message, illustrated in Figure 13a. A
READ message enables the CCC to obtain one or more bytes of data from an ECU commencing at a specified address of the ECU's memory. The READ message may be used for a variety of purposes. For example, the ~ 338043 ^_ -72-READ message may be used to determine which sub-scribers are authorized to view which channels, which subscribers should be charged a fee for viewing pay-per-view programs, and so forth. Also, the READ
message may be used to examine various portions of an ECU's data or prog~am memory to diagnose faulty or failing ECUs.
As shown in Figure 13a, a READ message includes the usual ADDRESS (ADL and ADH) and BYTE
COUNT (N) bytes. After these bytes is a COMMAND
byte which may be any value e~ual to hex F8, F9, -FA
or FB (11111000, 11111001, 11111010 or 11111011).
Each COMMAND byte F8 through FB specifies that the message is a READ message. However, each COMMAND
byte also specifies by the values of the two least significant bits on which one of the four available reverse channels the ECU should return data to the CCC. Thus, COMMAND bytes F8, F9, FA and FB specify that the ECU should return data to the CCC on re-verse channel 00, 01, 02 and 03, respectively. Fol-lowing the COMMAND byte is (1) a DATA COUNT byte (NN) specifying how many data bytes to return to the CCC, and (2) two memory address bytes (MADL and MADH) specifying in low and high order parts the ECU memo-ry address at which the data READ operation should commence.
In response to a READ message, the ECU
returns to the CCC on the specified reverse channel a message as shown in Figure 13b which includes the data requested by the READ message. The returned message includes the usual ADDRESS and BYTE COUNT
bytes, followed by a COMMAND byte set to the value of the read command to which the return message is responsive. Next follow a DATA COUNT byte (NN) specifying the number of bytes of returned data, and the NN bytes of data requested by the READ message.

~_ -73-Still another message sent from the CCC to an ECU is an ECHO BACK message, illustrated in Figure 14. An ECHO BACK message causes an addressed ECU to return to the CCC on a specified reverse chan-nel a message which is identical to that received by the ECU. The ECHO BACK message may be used to test the cable network for signal degradation and trans-mission errors, and may also be used to locate non-operating ECUs.
As shown in Figure 14, an ECHO BACK mes-sage includes the usual ADDRESS (ADL and ADH) and BYTE COUNT (N) bytes. Next is a COMMAND byte which may be any value equal to hex F0, Fl, F2 or F3 (11110000, 11110001, 111100010 or 11110011). As previously described with respect to the READ mes-sage, the last two bits of the COMMAND byte specify on which one of the four reverse channels the ECU
should echo back the CCC's message. After the COM-MAND byte is a DATA COUNT byte (NN) followed by NN
bytes of data.
In response to the receipt of an ECHO BACK
message, the addressed ECU returns a message to the CCC as shown in Figure 14b on the specified reverse channel. Irrespective of the manner in which the message was addressed to the ECU (i.e., using a global, mask or specific address), the ECU's message includes the responding ECU's unique address in the ADH and ADL bytes, followed by a BYTE COUNT byte (N). There-after, the returned message is (assuming no trans-mission errors) identical to that originally sent from the CCC.
Yet another message sent from the CCC to an ECU is a FORCE TUNE message, illustrated in Figure 15.
This message is used to cause an addressed ECU to force tune any drop associated with that ECU to any channel. Force tuning may be used, for example, to cause all subscriber television sets connected to ~33804s the CATV system to tune to a channel on which instruc-tions and news may be communicated to subscribers in the event of a civil emergency. Also, this message may be used to automatically tune a subscriber's television set at the appropriate date and time to a channel carrying a pay-per-view program (such as a boxing match) which the subscriber requested to view.
As shown in Figure 15, a typical FORCE
TUNE message includes the usual ADDRESS (ADL and ADH) and BYTE COUNT (N) bytes. Next follow a COM-MAND (CMD) byte equal to hex F4 (11110100) to identify the message as a FORCE TUNE message, and a DATA COUNT
byte (NN) equal to 2. Thereafter, a SUBSCRIBER UNIT
(SU) byte specifies the particular subscriber unit to be force tuned. In one embodiment, the SU byte specifies any one converter using the byte's three least significant bits. This requires a FORCE TUNE
message to be transmitted for each converter to be force tuned. Alternatively, each bit of the SU byte may be associated with a different one of six con-verters such that a single message to an ECU can force tune more than one converter associated with the ECU. Finally, a logical channel (LC) byte speci-fies the logical channel number to which the speci-fied converter should be force tuned. If the SU
byte is associated with more than one converter, there would be a plurality of LC bytes, one for each converter being force tuned.
Another series of messages sent from the CCC to an ECU are SEND FUNCTION messages. These messages are used to cause an ECU to return to the CCC so-called send function data accumulated by the ECU from the ECU's associated subscribers. Send function data is data keyed into SPUs by subscribers in response to requests for such data from the CCC
at head end 12. For example, send function data may represent voting or shop-at-home data keyed in by subscribers in connection with interactive viewer preference or shop-at-home services offered by the cable operator. In one embodiment, each ECU main-tains in its memory a plurality of so-called send function bytes arranged in pairs. Each pair of send function bytes is associated with a different one of up to six subscribers. The first byte specifies the subscriber with which the byte pair is associated.
The second byte contains the send function data. In addition to the byte pairs, the ECU maintains in its memory a send function coun~ byte specifying the number of send function bytes in the ECU's memory.
If the ECU's memory contains no send function data (e.g., no associated subscriber has entered send function data), the value of the send function count byte is zero.
In one embodiment of the invention there are six SEND FUNCTION messages. These messages are illustrated in Figures 16a through 16c. The first message is the SEND FUNCTION ENABLE message, shown in Figure 16a. In addition to the usual ADDRESS and BYTE COUNT bytes, this message has a command byte equal to hex 80, a DATA COUNT byte (NN), and a sin-gle DATA byte (SU). Each bit 0-5 of the (SU) byte is associated with a different one of six SUs. The SEND FUNCTION ENABLE message is used by the CCC to enable or disable the send function in an ECU with respect to particular SUs associated with that ECU.
The send function with respect to a particular SU is enabled or disabled depending respectively on wheth-er the setting of the bit of the SU byte associat-ed with that SU is set to "1" or to "0".
The second message is the SEND FUNCTION
CLEAR message, shown in Figure 16b. This message includes a COMMAND byte equal to hex 81, and a DATA

COUNT byte (NN) equal to 0. In response to the re-ceipt of this message, the addressed ECU clears the send function data in its memory.
The third message is the SEND FUNCTION DATA
message, shown in Figure 16c. This message includes a COMMAND byte which may have any value equal to hex 84, 85, 86 or 87 (10000100, 10000101, 10000110 or 10000111). Upon receipt of this message, an ad-dressed ECU will return to the CCC the send function data in its memory only if the ECU has any send func-tion data to send to the CCC (as determined by the value of the ECU's send function count byte). As previously described with respect to the READ message, the data will be returned by the ECU on the reverse channel (00, 01, 02 or 03) specified by the values of the two least significant bits of the SEND FUNC-TION DATA message's COMMAND byte. In response to a SEND FUNCTION DATA message, the ECU sends a mes-sage to the CCC which includes one or more pairs of data bytes, each pair associated with a different SU. The first byte of the pair specifies an SU
(from 0-5), and the second byte is the send data for that SU.
Yet another message available to be sent from the CCC to an ECU is a PAY-PER-VIEW message.
This message is used to (a) force tune an SU to a pay-per-view event requested by the subscriber, and (b) turn on the subscriber's television apparatus via the subscriber's SPU power relay.
The PAY-PER-VIEW message used in one em-bodiment of the invention is shown in Figure 17 as including a COMMAND byte equal to hex 88. Next fol-lows a DATA COUNT byte (NN). A PROGRAM NUMBER (PN) byte specifies the so-called program number, de-scribed in more detail below, to which the message relates. Finally, two MS bytes specify the MS num-bers, earlier described, required to tune the con-_ -77-verter/tuner circuitry contained in the SUs to the particular physical channel carrying the pay-per-view event specified by the PROGRAM NUMBER byte.
The PAY-PER-VIEW message in one embodiment of the invention operates as follows. Each ECU
includes an Event View byte in its memory. Each of bits 0-5 of this byte is associated with a different one of up to six SUs. When a subscriber tunes to a pay-per-view event, a bit of the Event View byte associated with the SU tuned to the pay-per-view event is set to "1". That bit is reset to "0" when the SU is tuned to a channel not associated with a pay-per-view event, or when the subscriber via the SPU turns off his or her television receiver. The Event View byte is used, as later described, to control the incrementing of a timer.
In addition to the foregoing, each ECU has a Program Event Map in its memory comprised of 128 pairs of bytes. Each byte pair of this map is as-sociated with a different one of 128 program num-bers. Each program number is associated with a dif-ferent pay-per-view program event. Thus, the first byte pair of the Program Event Map is associated with program number or event 0, the second pair with program number or event 1, and so on. The byte pairs contain the MS numbers conveyed by the PAY-PER-VIEW
message.
In addition to the Program Event Map, each ECU includes in its memory a Program Authorization Map. This map includes 768 bytes arranged in six groups of 128 bytes per group. Each group of 128 bytes is associated with a different SU, and each byte of each group is associated with a dif-ferent one of 128 pay-per-view events. If a sub-scriber associated with a particular SU is author-ized to view pay-per-view programs, and requests via " 1 338043 the subscriber's SPU to view a particular pay-per-view program, the three least significant bits of the byte associated with that program and SU are set to the address of the SPU from which the pay-per-view request was received. The five most signifi-cant bits of the byte, each initially zero, are used as a preview timer as later described.
To order a desired pay-per-view event, a subscriber enters the program number associated with the pay-per-view event into the keyboard of the sub-scriber's SPU. If the subscriber is authorized to view pay-per-view events, the address of the SPU
from which the request was received is placed in the appropriate byte of the Program Authorization Map as described above. When the event begins, the CCC
transmits a PAY-PER-VIEW message specifying the pro-gram number and the MS tuning data required by the converter/tuners of the SUs to tune to the program.
If a subscriber has requested to view the pay-per-view program specified in the PAY-PER-VIEW message, the ECU force tunes the SU associated with that sub-scriber to the channel carrying the pay-per-view event. In addition, the ECU sends a command to the SPU to cause the SPU to (1) flash the SPU's event-order LED to signify that the subscriber is viewing a pay-for-view event during the preview period, and (2) turn on the SPU's television relay to supply power to the subscriber's television set. Thus, at the appropriate date and time, the ECU will turn on and force tune the subscriber's television set to the requested pay-per-view event. Also, the ECU
will initiate operation of a preview period timer.
Durlng the preview period, a subscriber may view the pay-per-view event free of charge. If the subscriber views more than a predetermined number of minutes of the pay-per-view program, the preview timer will time out and the ECU will send a command to the SPU

_ 79 to cause the event-order LED to glow continuously to signify that the subscriber will be charged a fee for viewing the event.
The preview timer operates as follows.
Upon the timing out of a pay-per-view event timer, the ECU checks the state of the bit flags in the Event View byte. If the bit associated with an SU
is set to "1", then a bit of the preview timer as-sociated with the SU and program to which the SU is tuned (described above) is set to "1". Each of the five bits of the preview timers in the Program Authorization Map represents a fraction (i.e., one-fifth) of the preview period. Each time that the pay-per-view event timer times out, and if the as-sociated bit of the Event View byte is set to "1", another one of the five bits of the appropriate pre-view timer is set by the ECU. When all five bits of the preview timer have been set, the preview period is over and the subscriber will be charged for the pay-per-view event. The CCC periodically collects the preview timer information contained in the Program Authorization Map using READ messages to determine which subscribers should be charged for viewing which pay-per-view events.
Although several messages have been de-scribed in detail with respect to an embodiment of the invention, it will be apparent to those skilled in the art that the message format utilized in the present invention can accommodate numerous other messages sent between the CCC and the ECUs. It will also be apparent to those skilled in the art that the basic format of the CCC/ECU messages may be changed.

E. Data Processor Operation The operation of the Data Processor will now be described for an embodiment of the invention using the message formats and messages illustrated in Figures 10-17. A source and object code computer program listing which will be readily understood by those skilled in the art for controlling the opera-tion of the Data Processor is annexed at Appendix C.
Figure 18a illustrates the overall pro-grammed operation of the Data Processor. As shown in Figure 18a, data received from the CCC is placed by USART 400 of digital unit 55 (Figure 5) in FIFO
receive buffer 1001. This buffer is organized as a 256 x 4 byte buffer such that it can hold up to four 256-byte CCC messages at any one time. A buffer counter associated with the Data Processor points to the next empty buffer in the FIFO. Two other buffers shown in Figure 18a are FIFO output buffer 1002 and FIFO input buffer 1003. Data received by the Data Processor from the Drop Processor is placed in output buffer 1002. Similarly, data passed to the Drop Processor from the Data Processor is placed in FIFO
input buffer 1003. Each of these buffers contains 256 bytes and may buffer up to 25 10-byte messages.
A buffer counter associated with each buffer points to the next empty buffer. The Data Processor receives data from FIFO buffers 1001 and 1002, operates on the data (Figure 18a, item 1004), and sends data to FIFO buffer 1003 or to the CCC.
Figure 18b illustrates a flow chart of a routine by which the Data Processor determines whether or not a message has been received from the CCC and, if~so, whether or not the message is for that ECU.
The routine of Figure 18b is called whenever the Data Processor is interrupted by USART 400 (Figure 5) to signify that a message has been received from the CCC .

~ - -81- l 338043 The routine of Figure 18b commences at step 1021, where the routine inhibits further input from USART 400 and determines from the CRC bytes of the received message whether or not a transmission error occurred. If an error occurred, the routine branches to step 1028 where input from USART 400 is again enabled. After step 1028, the interrupt ser-vice routine advances to step 1029 and returns to the calling program.
Alternatively at step 1021, if no transmis-sion error occurred, the routine advances to step 1022 where the Data Processor checks the address bytes of the received message. If the address bytes match the ECU's address, the routine advances to step 1027 where the buffer counter associated with FIFO buffer 1001 (Figure 18a) is incremented by one.
The routine then advances to step 1028 where USART 400 is enabled as earlier described. Because the buffer counter value was incremented at step 1027, a sub-sequent CCC message received by USART 400 will be written into the next buffer and will not overwrite the contents of the buffer cont~ining the previously received CCC message.
Returning to step 1022, if the address bytes of the received message do not match the ECU's address, the routine branches to step 1024, where the address bytes are checked for the presence of the global or broadcast address (hex FFFF). If this address is present, the message is for the ECU and the routine advances to step 1027 as previously de-scribed. Otherwise, the routine advances to step 1025 where the Data Processor checks for the mask address (hex 0000) in the CCC's message. If this address is not present, the message is not for the ECU and the routine branches to step 1028. Other-wise, the routine advances to step 1026 where the mask operation is performed as earlier described.

1 33804~

The routine then branches to step 1027 or to step 1028 depending respectively on whether or not the result of the mask operation performed at step 1026 indicates that the message is for the ECU.
The operating program of the Data Proces-sor will now be described with reference to Fig-ures 18c through 18h. This program is comprised of two major parts: (1) a main routine, and (2) a col-lection of application programs to implement various functions within the ECU. The main routine is a task-driven program which branches to one or another application program depending upon the task to be performed. The application program performs its task (e.g., inputting keypress data from an SPU such as subscriber-entered channel requests, pay-per-view requests, send function data, etc.) and returns to the main routine. Because of the need to service a plurality of SPUs on a plurality of drop cables, it may occur that an application program must return to the main routine before the application program has completed its particular task. For example, if a subscriber enters a two-digit channel request into an SPU keyboard, the application program associated with that function may input the first digit and return to the main routine prior to the subscriber entering the second digit. In this event, the appli-cation program prior to returning to the main routine sets a time out value in a time table and a jump address in a jump address table. As more fully des-cribed below, the time out and jump address values enable the main routine to jump back to the applica-tion program at the appropriate time to continue at the point the application program left off.
Figure 18c illustrates a flow chart gener-ally illustrating the operation of the main routine.
As shown in Figure 18c, the main routine begins at ~ 338043 step 1005 upon ECU power up. At step 1005, the Data Processor initializes I/O and memory maps, an inter-rupt timer, direct memory access, and various regis-ters and counters. The program then advances to step 1006, where the Data Processor initializes USART
400. At step 1007, the Data Processor 420 checks whether or not its back up memory requires initializ-ing. If so, the program advances to step 1008 to initialize the back up memory. Otherwise, or after completing the back up memory initilization in step 1008, the program advances to step 1009 where other memory locations are initialized. Generally, steps 1008 and 1009 initialize such items as the Channel Authorization Map, Channelization Map, parental con-trol codes, Program Event Map, Program Authorization Map, and so forth. In steps 1010, 1011 and 1012, the Data Processor initializes the drop and device polling maps and pointers.
After initialization, the Drop Processor enters a main loop. The main loop is illustrated in the flow chart of Figure 18d. As shown in Figure 18d, the Data Processor in the main loop sequentially determines whether or not any of four events have occurred, viz., whether or not (1) the Data Processor has received a message from the CCC (step 1013), (2) a 100/64 millisecond pay-per-view eevent timer has timed out (step 1014), (3) the Drop Processor output buffer contains data for the Data Processor (step 1015), and (4) a pay-for-view event timer has timed out (step 1016). If any of the foregoing events have occurred, the Data Processor at the ap-propriate step 1013, 1014, 1015 or 1016 branches to an associated operation routine shown in Figure 18d as Operate 1, Operate 2, Operate 3 and Operate 4, respectively. Otherwise, the program advances to the next numbered step in Figure 18d. After step ` ~ -84- l 3380~3 1016, or after an operation routine, the program flow loops to step 1013.
The operation routines of Figure 18d will now be described with reference to Figures 18e-18h.
Operate 1 Routine If the main routine detects at step 1013 (Figure 18d) that a message addressed to the ECU has been received from the CCC, the program branches to the Operate 1 routine, shown in Figure 18e, to respond to the CCC message.
The Operate 1 routine commences at step 1030, where the Data Processor loads a CCC message from buf-fer 1001 (Figure 18a) into working memory. The pro-gram then advances to step 1031, where the COMMAND
byte of the CCC message is checked to determine what action the Data Processor should take.
At step 1031, if the COMMAND byte of the CCC message is hex F0-F3 (ECHO BACK), the program advances to step 1032 to transmit (echo) the received message back to the CCC. After transmitting the message, the program advances to step 1041 and re-turns to the main loop as earlier described.
If the COMMAND byte at step 1031 is hex FC
(WRITE ), the program advances to step 1033 to store the data contained in the WRITE message commencing at the location of the ECU's memory. From step 1033, the program advances to step 1034 and returns to the main loop as earlier described.
If the COMMAND byte at step 1031 is hex F8-FB (READ), the program advances to step 1035 to transmit to the CCC data from the ECU ' s memory speci-fied in the WRITE message. From step 1035, the pro-gram advances to step 1043 and returns to the main loop as earlier described.
If the COMMAND byte at step 1031 is hex F4 ( FORCE TUNE ), the program advances to step 1037 where the converter of the specified SU is tuned to the spe-cified channel, the SPU seven-segment display is set to display the logical channel to which the SU is being force tuned, and the power relay of the SPU
associated with the SU is activated to turn on the subscriber's television. The program then advances to step 1038 and returns to the main loop as earlier described.
If the COMMAND byte at step 1031 is hex 80 (SEND FUNCTION ENABLE) or hex 81 (SEND FUNCTION
CLEAR), the program advances respectively to step 1039 to enable/disable the send function in the SPU's or to step 1042 to clear the send function data buffer in the ECU. From steps 1039 or 1042, the program advances respectively to step 1040 or step 1043 and returns to to the main loop as earlier described.
If the COMMAND byte at step 1031 is hex 84-87 (SEND FUNCTION DATA), the program advances to step ~044 where the Data Processor checks the value of the send function data count byte to determine whether or not the ECU has any send function data to return to the CCC. If the ECU has no send function data, the program branches from step 1044 to step 1047 and returns to the main loop as earlier described.
Otherwise, the program advances to step 1045 where the ECU's send function data is transmitted to the CCC. The program then advances to step 1046 and returns to the main loop as earlier described.
Finally, if the COMMAND byte at step 1031 is hex 88 (PAY-PER-VIEW), the program branches to step 1048 where the MS tuning data contained in the PAY-PER-VIEW message is stored in the ECU's Program Event Map. The program then advances to step 1049 whère the Data Processor checks the Program Authoriza-tion Map to determine for a first subscriber whether or not the subscriber has ordered to view the pay-per-view program. If a subscriber has requested to view the pay-per-view event, the program advances to step 1050 where the SU associated with that subscriber is force tuned to the pay-per-view program, the as-sociated five-minute preview timer is started, the event-order LED on the subscriber's SPU is set to flashing, and the SPU's power relay is activated to turn on the subscriber's television. The program then advances to step 1051 which causes the program to loop back to step 1049 for each of up to six sub-scribers. After looping for all subscribers, the program from step 1051 advances to step 1052 and returns to the main loop as earlier described.
Operate 2 Routine If the main routine detects at step 1014 (Figure 18d) that the 100/64-second timer has timed out, the program branches to the Operate 2 routine, shown in Figure 18f. The Operate 2 routine functions to transfer control of the Data Processor to any of a plurality of application programs. As earlier described, application programs implement a variety of functions, such as responding to SPU key presses and implementing the requested operation (e.g., chan-nel selection pay-per-view, parental control), acti-vating the SPU's power relay, activating (flashing or non-flashing) and deactivating the SPU order event LED, clearing the SPU seven-segment display, sending data (e.g., program or channel information) to the SPU display, and so forth.
The Operate 2 program operates as follows.
The Data Processor maintains in memory a time table having a pluraliity of two-byte entries for each of up to 8 devices on each of up to 6 different drops associated with the ECU. In one embodiment, the time table has 64 entries (0-63), although in the ~ -87- 1 338043 described embodiment there may be no more than 6 drops with no more than 8 devices (up to 4 SPUs and up to 4 other devices~ on each drop associated with each ECU. The entries in the time table are sequen-tially arranged by drop and device, such that entries 0-7 are associated with devices having addresses 0-7 on drop 0, entries 8-15 are associated with devices having addresses 0-7 on drop 1, and so on. As pre-viously described, the entries in the time table are set by the various application programs as a time out value prior to a return to the main routine from the application program.
Upon entry into the Operate 2 routine, a time table pointer (I) is set to a value from 0-63 (step 1060) as a function of the value of a time table counter (J). The routine then advances to step 1061, where the I pointer is used to read the Ith entry (associated with a particular device on a particular drop as described above) from the time table. If the value of that entry is hex FFFF (signifying that the timer is off), the routine branches to step 1066 where the time table counter J is incremented by one in preparation for the next pass through the Operate 2 routine. If the entry is other than hex FFFF, the routine advances to step 1062 where the time table entry is decremented by one. If the time table val-ue after decrementing is not equal to zero (step 1063), the routine branches to step 1066 where the J counter is incremented as previously described.
On the other hand, if the timer entry is equal to zero, the timer has timed out and the routine advances to step 1064 where a zero is placed in a memory location (Key Code), and the value of thè I pointer is used to interrogate a jump table.
The jump table is a table maintained in the ECU's memory which is similar in organization to the time table. However, the jump table entries specify the memory location in an application program to which the program should jump. These values may point to the start of an application program, or to a point within an application program if the application program had previously returned to the main routine prior to completing the application program's task.
Based upon the entry contained in the jump table, the Operate 2 routine then advances to step 1065, where the routine jumps to the point in an appli-cation program ("APL") specified by the jump table.
When the application program returns to the Operate 2 routine, the Operate 2 routine advances to step 1066 where the J counter is incremented as earlier described.
The routine then advances to step 1067 to return to the main loop.

Operate 3 Routine If the main routine determines at step 1015 (Figure 18d) that the Drop Processor has data for the Data Processor, the program branches to the Oper-ate 3 routine, shown in Figure 18g. The Operate 3 routine functions to appropriately respond to data received from the Drop Processor. Such data may include 84 Commands (Unsolicited Data Responses), and 04 Responses received from associated SPUs.
As shown in Figure 18g, the Operate 3 rou-tine at step 1070 first determines what type of mes-sage is being sent from the Drop processor. If the message is an 01, 03, 05, 07 or 08 command response (earlier described), no action is required and the Operate 3 routine advances to step 1083 to return to the main routine as earlier described. Although in the flow chart of Figure 18g no action is taken in response to an 01, 03, 05, 07 or 08 response, it will be apparent to those skilled in the art that various -- -89- ~ 338043 modifications may readily be made to the program flow to cause the Data Processor to respond to any or all of these command responses. For example, the program may be modified to cause the Data Processor upon detecting in an 01 response that power is not being received from a particular drop to notify the system operator of this fact.
If an 84 Command is detected at step 1070, the Operate 3 program branches to step 1072 to deter-mine if an error has occurred. If "yes", the program branches to step 1073 where a device error counter is incremented in an error operation subroutine. If the counter reaches a predetermined value ~e.g., 2), the erro~ subroutine causes a re-initialization of pointers and jump table entries associated with the SPU or device sending the 84 Command. The program then advances to step 1083 to return to the main loop as earlier described. On the other hand, if no error is detected at step 1072, the program ad-vances to (1) step 1074, where the jump table pointer is set, (2) step 1075, where the received data is placed in a memory location (Key Code), and (3) step 1076, where the program jumps via the jump table to the appropriate application program (APL). When the application program returns to the Operate 3 routine, the Operate 3 routine advances to step 1083 and re-turns to the main loop.
Finally, if an 04 Response is detected at step 1070, the Operate 3 routine advances to step 1071 to check for a transmission error. If an error has occurred, the routine branches to step 1073. Other-wise, the routine advances to step 1077 where the Data Processor determines if the 04 Response is a status response. If the 04 Response is not a status response, the program branches from step 1077 to step 1083 to return to the main loop as earlier `- go 1 338043 described. Otherwise, the program advances to step 1078. At step 1078, if the status response indicates that a key has been recently depressed on the device keyboard, the routine branches to steps 1080, 1081 and 1082 to respond to the key press as described above with respect to steps 1074-1076. If the status response indicates that no key has been recently depressed, the program advances from step 1078 to step 107g where the status byte is checked to deter-mine the state of bit 7. As earlier described, bit 7 indicates as a function of the setting of SPU
switch 780 (Figure 7) whether the responding device is a master or slave SPU and, thus, to which con-verter (primary or secondary) the SPU is assigned.
After step 1079, the program advances to step 1083 to return to the main loop as earlier described.
Operate 4 Routine Lastly, if the main routine at step 1016 (Figure 18d) determines that the pay-per-view timer has timed out, the program branches to the Operate 4 routine shown in Figure 18h. This routine starts by entering a loop at step 1091 to determine for each subscriber whether or not the subscriber is viewing a pay-per-view program. If the subscriber is not viewing a pay-per-view program at step 1091, the routine branches to step 1096 where the routine loops back to step 1091 to make the foregoing determination for the next subscriber. If at step 1091 a pay-per-view event is being viewed by a subscriber, the routine advances to step 1092 to check the associated 5-bit preview timer in the appropriate byte of the Program Authorization Map. If the value of the byte is greater than or equal to F8, indicating that the byte's five most significant bits (i.e., the timer bits) are all set to "1" and the preview period has " 1 338043 expired, the program branches to step 1096. Howev-er, if the value of the byte is less than hex F8, indicating that at least one of bits 3-7 of the byte is equal to zero and the preview period has not ex-pired, then the program advances to step 1093 where the 5-minute timer is incremented by setting a timer bit to "1". The routine then advances to step 1094, where the value of the byte is again checked. If the five timer bits are now all set to "1", then the preview period has expired and the program branches to step 1095 to cause the order-event LED on the subscriber's SPU to glow steadily to indicate that the subscriber will be charged for the pay-per-view event. Otherwise, the program branches to step 1096.
Step 1096 causes the routine to loop to setp 1091 to check for each subscriber whether or not a pay-for-view event is being viewed. At step 1096, after the routine has determined for each subscriber whether or not the subscriber is reviewing a pay-per-view event, the routine advances to step 1097 and returns to the main loop as earlier described.

F. Polling and Handshaking In the above-described system, an ECU trans-mits a message to the CCC only if the ECU receives a CCC message which requires a return message (e.g., READ, ECHO BACK or SEND FUNCTION DATA messages).
Otherwise, ECUs do not transmit messages to the CCC.
Thus, in the above-described system, it is possible for an ECU to have important information to send to the CCC (e.g., information received from a subscriber requesting additional services, or infor-mation from a medical monitoring device attached to the drop cable of an ECU), but be unable to notify the CCC of this fact. Also, because ECUs in the above-described system do not ordinarily respond to the CCC upon receipt of a CCC message, the CCC might not become alerted to an inoperative ECU or transmis-sion link until a message requiring a response (e.g., READ) was addressed to the ECU and the responsive message was not received by the CCC.
To enable ECUs to send important information to the CCC in a timely fashion, and to provide for a check that ECUs are operative, a polling and handshak-ing communication protocol may be used. In view of the potential for a large number of ECUs (up to 65,536 on each of up to 4 banks) on the cable network of-the present invention, an important consideration in designing such a protocol is to miniml ze the time required to poll and handshake with individual ECUs.
The present invention therefore provides for a handshaking scheme which informs the CCC of inoperative ECUs but which does not require the trans-mission of relatively lengthy formatted messages.
In addition, the present invention provides for a polling scheme which allows an ECU to notify the CCC
that the ECU has information for the CCC, but does not require the transmission of lengthy information messages to the CCC in response to the receipt by an ECU of a poll message. The polling scheme enables the CCC to gather information from the ECUs via two independently operating mechanisms. A first or "general" polling scheme allows the CCC to poll each ECU to determine if the ECU has information to send to the CCC. The general polling scheme allows for the detection in less than 20 seconds of all opera-tive ECUs which require service. A second or "priority" polling scheme allows for the detection in~less than 20 milliseconds of any one ECU having so-called priority information for the CCC. For both polling schemes, the response "level" is estab-lished by the CCC in advance of the poll to identify _ ` I 338043 and obtain responses from only those ECUs having information falling within a predetermined level or threshold of importance. The level of information may be a function, e.g., of the value or timeliness of the information.
1. Message Format The polling and handshaking protocols are described below with respect to an alternative basic message format from that earlier described and shown in Figures 10-11. This alternative basic message format is illustrated in Figures 19-20.
Figure 19 shows an alternative basic message format for data communication in the forward direction (i.e., from the CCC to an ECU). Each message is of a predetermined format, comprising: a FLAG byte, a SEND CONTROL ("SEND CNTL") byte, a plurality of DATA
bytes, two CYCLIC REDUNDANCY CHECK ("CRC") bytes, and another FLAG byte. Each byte is comprised of 8 bits. The FLAG and CRC bytes are identical to and serve the same function as the FLAG and CRC bytes pre-viously described.
The SEND CNTL byte in the message of Fig-ure 19 is used to define any of 256 unique commands.
As described in greater detail below, SEND CNTL com-mands may cause an ECU to return information to the CCC, or may cause the ECU to perform a specified operation.
The DATA bytes may comprise from 0 to 255 bytes per message. The SEND CNTL byte specifies how the DATA bytes are to be interpreted by the ECU.
If a message is transmitted to a particular ECU, the first two DATA bytes typically specify the ECU address from 0-65536. The first address byte ("ADL") speci-fies the low-order part of the address, and the second byte ("ADH") specifies the high-order part. Also, typically, the third DATA byte of a message addressed to a particular ECU is a CONTROL ("CTL") byte. The CTL byte may specify the ECU drop, if any, for which the message is designated, the particular reverse channel that the ECU should use to respond to the CCC, etc.
An alternative basic message format in the reverse direction (i.e., from the ECUs to the CCC) is shown in Figure 20, and is similar to the format for forward communication. Thus, FLAG bytes are used to identify the beginning and end of a message.
Following the beginning FLAG byte is a RECEIVE CONTROL
("REC CNTL") byte. The REC CNTL byte, which need not be identical to the SEND CNTL byte, specifies how subsequent DATA bytes, if any, contained in the message are to be interpreted by the CCC. Two CRC
bytes, earlier described, follow the last DATA byte.
In addition to the foregoing basic messages, special ECU poll response bytes are utilized. These poll response bytes are comprised of one or two byte-times of carrier from an ECU. As described below, these poll response bytes are used as a handshake in response to polling and informational messages sent from the CCC.

2. General Level Polling Protocol The first polling method is the so-called General Level Request ("GLR") poll. This mechanism is used to sequentially address a poll message to each ECU in the system to determine whether or not the ECU requires service (i.e., whether or not the ECU has information for the CCC). Prior to the poll, the CCC establishes the "level" at which the ECUs will respond to the poll. Once the CCC has estab-lished the poll level, an ECU responds to a GLR
poll only if the ECU (a) requires service, and - ~ 338043 (b) has information to transmit to the head end 12 which is at a level equal to or less (i.e., more important) than the level previously established by the CCC. The addressed ECU upon receipt of a GLR
poll responds by sending to the CCC one or two General Poll Response ("GPR") bytes. Each GPR byte consists of one byte-time of carrier from the ECU, or "11111111. If the CCC fails to detect a GPR
byte from the polled ECU within a predetermined time interval (e.g., 350 microseconds), the CCC presumes the ECU to be inoperative. After a predetermined-number of (e.g., five) unsuccessful attempts to contact the ECU, the CCC prints an appropriate error message to the head end operator.
If the addressed ECU transmits to the CCC
a single GPR byte in response to a GLR poll, the CCC
interprets this to mean that the ECU is operative and does not require servicing. The CCC then polls the ECU having the next sequential address. However, if the ECU returns two GPR bytes, the CCC interprets the response as a service request from an operative ECU. Using the GLR poll, the CCC periodically cycles through all active ECUs and constructs a Service Request table in memory. The CCC subsequently uses this table to selectively retrieve, using a Priority Information Request message later described, infor-mation from only those ECUs requiring service. At a forward data transmission rate of 200 Kbps, a com-plete general poll request cycle of 65,536 ECUs typi-cally takes less than 20 seconds.
The GLR poll is implemented by the CCC as follows. First, the CCC transmits a General Level Request Threshold ("GLRT") message. A typical GLRT
message is shown in Figure 21a in accordance with the basic message format of Figure 19. The GLRT
message has a SEND CNTL byte equal to 08 and is used - ~ 338043 by the CCC to establish the response threshold level for the GLR poll, as earlier described. The response threshold is established by a level ("LVL") byte contained within the GLRT message. The first two bits of the CTL byte of the ~LRT message specify how the ECU should interpret the LVL byte. If the first two bits of the CTL byte are "01", this is interpreted by the ECU to mean that the ECU should respond posi-tively (i.e., with two GPR bytes) to subsequent poll messages only if the level of the ECU's information is equal to the level set forth in the LVL byte. -If the first two CTL byte bits are "10", this means the the ECU should respond positively to poll messages if the level of information to be sent to the CCC is equal to or less than the LVL value.
After sending the GLRT message to establish the poll level, the CCC transmits one or more General Level Request Poll ("GLRP") messages. A typical GLRP message is illustrated in Figure 21b in accord-ance with the basic message format of Figure 19. As shown in Figure 21b, the SEND CNTL byte of a GLRP
message may be any value equal to 0, 1, 2, or 3.
The SEND CNTL byte of the message specifies to the addressed ECU that the message is a GLRP message, and further specifies on which reverse channel (O, 1, 2, or 3) the ECU should send GPR response bytes.
If an ECU responds to the GLRP message with two GPR
bytes on the specified reverse channel, this is inter-preted by the CCC as a service request from an opera-tive ECU as earlier described. If one GPR byte is returned, this is interpreted by the CCC as a response from an operative ECU not requiring service. If no GPR bytes are received, the CCC presumes the ECU to be-inoperative.

3. Priority Polling Protocol The second or priority polling method is the so-called Priority Information Window ("PIW") poll. This second method establishes a priority "window" on the cable network such that any ECU hav-ing information to send to the head end which falls within the pre-established priority window will alert the head end of this fact on a predetermined priority service request channel in response to the receipt of any general polling request addressed to any ECU.
Priority polling is enabled by a Priority Information Request Window Control ("PIRWC") message sent from the CCC. The PIRWC message, illustrated in Figure 22a in accordance with the format of Figure 19, is used by the CCC to set the ECU priority response threshold level. As shown in Figure 22a, a PIRWC
message has a SEND CNTL byte equal to 9. A LVL byte of the PIRWC message specifies the priority response threshold level. The ECU interprets the LVL byte in a manner determined by the value of the bits in a control ("CTL") byte. Bits O and 1 of the CTL byte specify whether the ECU should respond if the level of its information is equal to the value of the LVL
byte, or whether the ECU should respond if its level of information is equal to or less than the LVL value.-In addition, bit 2 of the CTL byte specifies whether to turn the PIW function in the ECU on or off.
Finally, bits 3 and 4 of the CTL byte specify on which of the four reverse channels the ECU should return a priority response. The values and functions of the bits of the CTL byte in one embodiment of the PIRWC message are set forth below:

1 3~804 3 TABLE E
PIRWC CTL BYTE

_ BO Function O 1 The ECU should respond to a priority poll only if the level of its information equals the value of LVL.
1 0 The ECU should respond to a priority poll only if the level of its information is equal to or less than the value of LVL.

B2 Function O Set PIW in ECU off.
1 Set PIW in ECU on.

B4 B3 Function O O Return priority response on reverse channel 0.
O 1 Return priority response on reverse channel 1.
After a PIRWC message is transmitted to and received by the ECUs, any ECU with priority information corresponding to the threshold level established by the PIRWC message will transmit to the CCC on the specified priority reverse channel a general poll response (GPR) byte after reception of any general level poll message. The reception by the CCC on the priority reverse channel of a GPR
byte (there may be more than one response from a plurality of ECUs) alerts the CCC that an ECU (the identity of which is as yet unknown to the CCC) has priority information to send. Upon receipt of such a priority response, the CCC transmits a series of 1 338~4~

messages, described below, to disable the priority "window" and to locate within 20 milliseconds an ECU
sending the priority poll response.
Assuming for the moment that the CCC has identified an ECU returning a priority response (or requesting service in response to the earlier described GLR poll), the CCC obtains the information from the identified ECU by addressing a Priority Information Request ("PIR") message to the ECU.
There are four PIR messages: PIRO, PIRI PIR2, and PIR3, having SEND CNTL bytes equal to 4, 5, 6, and 7 respectively (Figure 22b). The PIR0, PIR1, PIR2 and PIR3 messages cause the ECU to send its priority information to the CCC on reverse channels 0, 1, 2, or 3, respectively.
In response to a PIR message, the addressed ECU transmits its priority information to the CCC
using a Priority Information Request Response ("PIRR") message. The PIRR message allows an ECU to send to the CCC any of 256 different messages or values of numeric data for each drop associated with the ECU.
A typical PIRR message is illustrated in Figure 22c in accordance with the format of Figure 20.
As shown in Figure 22c, a PIRR message includes a REC CNTL byte equal to 0. A LEVEL ("LVL") byte specifies the threshold level assigned to the priority information which the ECU is transmitting to the CCC (the LVL byte will either match the level previously established, or be numerically less than that level, depending upon the information contained in the previously sent PIRWC message). Following the LVL byte is a CONTROL ("CTL") byte. The CTL
byte specifies by the setting of bits 0-5 the drop or drops to which the priority information contained in the message relates. Each bit position 0-5 in the CTL byte is associated with a different ECU drop.
For each drop as to which the ECU is sending priority 1 ~80~ ~

information, the ECU sets to "1" the corresponding bit in the CTL byte. Following the CTL byte are up to 6 bytes of data (Dn), each byte represent-ing a predetermined or "canned" priority message or numeric value with respect to a different one of the 6 drops associated with the ECU and specified in the CTL byte. The message concludes with the usual CRC
and FLAG bytes.
Various divisions and definitions may be used for establishing the different levels of ECU
priority information. For example, levels 0-7 may be associated with medical information obtained from medical monitoring devices attached to an ECU drop cable. Similarly, levels 16-23 may be associated with security information obtained from security devices attached to an ECU drop. Lower levels, such as levels 32-39, may be used by an ECU to inform the CCC of syntax or other errors contained in CCC mes-sages received by the ECU. Similarly, information such as ECU status information, subscriber requests for additional services, subscriber responses to interactive two-way services, and other information may be associated with other priority levels.
The manner in which the CCC identifies an unknown ECU responding with a priority service request will now be described.
The CCC identifies an unknown ECU having priority information for the CCC using a binary sort method. The binary sort method involves dividing the population of ECUs having sequential addresses in the range of O to n into first and second groups of ECUs having respectively a first group address range from O to n/2, and a second group address range from n/2 + 1 to n. The CCC then transmits a message to the first group to determine whether or not any ECUs in the first group have priority information.
If the first group includes an ECU (still unknown) 1 33804~

having priority information, the CCC subdivides the first group into third and fourth groups in the manner earlier described, and sends a message directed now to the third group to determine whether or not any ECUs in the third group have priority information to send. If the third group includes an ECU having priority information, the CCC subdivides the third group into fifth and sixth groups and repeats the foregoing process. If the CCC at any time determines that the group ~first, third, fifth, etc.) with which it is working does not have priority information, the CCC knows that the other respective group (second, fourth, sixth, etc.) must contain the ECU having the priority information. The CCC then transmits messages to and repetitively subdivides that group until, eventually, the CCC subdivides a group to a single ECU having priority information. As will be apparent to those skilled in the art, the foregoing binary sort method in the case of 65,536 (216) ECUs requires no more than 16 iterations to locate an ECU having priority information.
The messages used by the CCC in implementa-tion of the binary sort method in an embodiment of the invention are shown in Figures 23a-d.
The CCC initiates a search for an unknown ECU having priority information using a Binary Sort Initialization ("BSI") message, shown in Figure 23a.
The BSI message has a SEND CNTL byte equal to 10, followed by two bytes specifying (in low and high order parts) a binary sort high address ("BSHAL" and "BSHAH") and two bytes specifying (in low and high order parts) a binary sort low address ("BSLAL" and "BSLAH"). The BSI message is sent by the CCC fol-lowing receipt of a GPR byte on the priority infor-mation reverse channel. The BSI message is used by the CCC to turn the priority information window off, to specify the binary sort group high address, and to specify the binary sort group low address. No response to the BSI message is expected from any ECU.
After the binary sort is initialized with the BSI message, the CCC transmits a series of binary sort poll messages to locate an ECU having priority information to send. Each binary sort poll message turns the priority information window off and speci-fies a binary sort group address range. Upon receipt of a binary sort poll message, any ECU having priority information within the priority information thres-hold level and an address within the specified group address range responds by transmitting to the CCC a GPR byte on the priority information channel previ-ously established by the CCC. Three binary sort poll messages, shown in Figures 23b-23d, are utilized in one embodiment of the invention to define the binary sort group range.
Figure 23b shows a Binary Sort Poll High and Low ("BSPHL") message. This message is used by the CCC to specify a binary sort group address range bounded between a low address and a high address.
The BSPHL message has a SEND CNTL byte equal to 11.
Following the SEND CNTL byte are two bytes specifying the binary sort high address ("BSHAL" and "BSHAH"), and two-bytes specifying the binary sort low address ("BSLAL" and "BSLAH"). Any ECU having priority infor-mation within the priority information threshold level and having an address within the low and high group address range specified in the BSPHL message responds to the CCC by transmitting a GPR byte on the priority information reverse channel.
~ Figure 23c shows a Binary Sort Poll Low ("BSPL") message. The BSPL message, having a SEND
CNTL byte equal to 12, is similar to the BSPHL message except that the BSPL message specifies only a binary sort low group address ("BSLAL" and "BSLAH"). This message is used by the CCC to subdivide a group address range by modifying only the low address of the group range. The BSPL thus enables the CCC to subdivide a group address range without having to send both the low and high addresses of the range.
Any ECU having priority information within the priority information threshold level and having an address which is greater than or equal to the specified group low address of the BSPL message and less than or equal to the previously specified high group address responds to the CCC by transmitting a GPR byte on the priority information reverse channel.
Finally, Figure 23d shows a Binary Sort Poll High ("BSPH") message. The BSPH message includes a SEND CNTL byte equal to 13. In this message, two bytes specify a binary sort group high address ("BSHAL" and "BSHAH"). This message is used similarly to the BSPL message to subdivide a group by modifying only one (i.e., the high) group address. Any ECU
having priority information within the priority infor-mation threshold level and having an address which is less than or equal to the group high address of the BSPH message and greater than or equal to the previously specified low group address responds to the CCC by transmitting a GPR byte on the priority information reverse channel.

4. Information Protocol When information, rather than a poll or status request, is transmitted from the CCC to an ECU, an informational protocol including a handshak-ing sequence is used to provide the CCC with posi-tive feedback that (a) the ECU received the message, (b) the message syntax was proper, (c) there were no transmission errors, and (d) the ECUs are operative.
The handshaking sequence does not require the trans-1 33~043 mission of lengthy formatted messages, thus minimizing the amount of time required to handshake with the CCC.
The handshaking response to informational messages is a General Poll Response Verification ("GPRV"), comprising one or two bytes of "11111111".
If no GPRV is detected by the CCC, the CCC interprets this to mean that the ECU is inoperative. If a single byte is received, the CCC interprets this to mean that the message was not accepted by the ECU. If two bytes are received, the CCC interprets this to mean that the message was received by the ECU without error and that processing will occur. If a two-byte response is not received, the CCC will try a predeter-mined number of times (e.g., five) before logging and notifying the operator of an error.
While preferred embodiments of the invention have been set forth for purposes of the disclosure, modification to the disclosed embodiments may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments of the invention and modifications to the disclosed embodi-ments which do not depart from the spirit and scope of the invention.

133~043 CP~t TLCS-4~ RSSE~HLER V2 2 PqGE

LOC 08~ OINE SOURCE ~ I a, ~ _~T
l; ;
2 ~ 7 19e3 3 ~ m~in ~-m V1 0 4 ~ (T~P4740P) ~; ;
6 ~ m~in routin- ;
7 ;
e;

9;

~noli~t .
~ t RO~ PR6E NO lS
03E0 307 org h' 3-0 308 ~ `
309 ~ -310 ; initi~iz-311 ;
03E0 3680 31Z m~in~ diclr il,O
313 ~
314 ; r-m el--r 31~ ;
03E2 CO 316 ld h, ~h' O
03E3 EO 317 ld l,th'O
03E4 io 3le mov h, ~
319 ;
03E5 lP 3ZO m~iO t ~,~hl~
03E6 R~ 321 h m~iO
322 l 03E7 3eC1 323 ~dd h, th'l 03E9 R5 3Z4 ~ m~iO
3Z~ ~
3Z6 ~ in / out port initi~liz-327 ~ ~
03ER 3P89 328 out ~,Xopl9 ; d-vide~ re~et 03EC 3ReC 329 out ~, pplc ; count-rl re~-t 03EE 3ReD 330 out ~,~opld ~ count-r2 reset 331 ;
03F0 4F 332 ld ~tth'f 03F1 3RR1 333 out ~,XopO1 ; 1 d di~pl~y 03F3 3RR2 334 out ~,XoD0Z ; l-d di-Dl~y 03F5 3RR4 33~ out ~,%opO4 ; r-lay,k-y~can out 03F7 3RR~ 336 out ~,XopO~ ; key~c~n out 03F9 3AR6 337 out ~,XopO6 ; l-d drivcr,vlfout 03F3 3~R7 338 out ~,SopO7 ; k-y-c~n in 03FD 3RRe 339 out ~,xOpOe ; ineerrupts APPENDIX A

CP~ TLCS-47 ~SSE~BLER v2 2 P~GE 2 LOC 08J LINE SOURCE ~1 aT~ ~
03FF 3a~9 340 out ~.%ooO9 ~ no u~c 341 ~
342 ~ st~ck point r word initi-liz-ROh P~GE NO 16 *
0401 4C 344 ld ~,~h'c 0402 3FFF 34~ st ~,sp~

0404 4~ 347 ld ~h'~
0405 3FC~ 348 t ~,rwrpch ~ h'~OO
349 ~
350 ~ l d d~t- s-t 3~1 ~
0407 4F 352 ld ,Sh'f 0408 3F35 353 ~t ,ld~tnl 040a 3F39 354 st ~,ld~-~1 3a~ 1 040C 48 356 ld ~,~h~b 040D 3F36 357 st ~,ld-tn2 040F 3F3~ 35a 5t ,ld--~2 3~9 ~
0411 4F 360 ld ,Sh'f 0412 3F37 361 ~t ,ld~tll 0414 3F38 362 t ,ld~-ll 363 ~
0416 48 364 ld ~,~h'b 0417 3F38 36 t ~,ld~tlZ
0419 3F3C 366 ~t ~,ld~12 367 ;
0418 4F 368 ld ~,~h~f 041C 3F8D 369 t ~,l cotl 041E 3FeE 370 st ~,l cotm 0420 3FeF 371 t ,l-coth 373 ~ k-y d~e~ s-t 374 ~
0422 4F 375 ld ~,~h'f 0423 3F2B 376 t ~,k-yod 042~ 3f42 377 st ~,k-~tOl 0427 3F43 37e ~t ~,k-st0h 379 ~
380 ; int-rruots r gi-t-r intl~liz-381 ;
0429 47 382 ld ~,~h'7 383 ;
042~ 3~eg 384 out ~,Xo~19 ; dovid-r st~rt 38~ ~
042C 3FlC 386 st ~,-irh 042E 13 387 xch ~,-ir ; isio inhibit 388 ~
389 ;
390 ; fruming rror bit on 391 ;
~, , CP/~ TLCS-47 ~SSE~8LER V2 2 PaGE 3 LOC 08J LINE SOUROE STaTE~ENT
042F 3931 392 sot sDuvum 3 ; fr~ming rror 393 ~
394 ; tim r on 11 bit tim-0431 3844 396 elr %op04,0 ; tim r eloek st~rt 397 ;
0433 4F 39e ld ~,th'~
0434 3FF6 399 st ~,ti~rhn 0436 47 W0 ld ~,th'7 0437 3FFS Wl st ~,ti~r~n 0439 4C W2 ld ~,Sh'e 043a 3FF4 403 st ~,timrln - W4 ;
043C 44 WS ld ~,rh~4 043D 3ReC W6 out ~,Xoole ; t~rt W7;
we ~
W9 ~ n~bl- int-rrupt-043F 3640 411 ielr il,O
412 ;
413 ~
414 ; r-e-nt Dow-r on 415 ; ~ eonv-rt-r s-l etion 416 ;
RO~ P~GE NO 17 ~
0441 3922 417 ~ t spus1,2 ; pu st-tu- hi ~le ;
0443 391F 419 t s rvre,l ; ervie- r-Gu-st 420 ;
044S 38a4 421 t~st XopO4,2 0447 e8 4Z2 b m~iOO
423 ;
044e 3933 424 s t spush,3 ; hi eh~nn-l eonv-rt-r 044a eD 42S b m~il 426 ;
0448 3973 427 m~iOO elr spu-h,3 ; lo eh~nncl eonvcrtcr 42~ ;
429 ;
430 ~ 10 e bit 'on' ?
431 ;
432 ;
044D 39E4 433 m~ill t-sto spuvdm,2 044F eD 434 b m~il ; 10 s-e oit on 43S ;
436 ;
437 ; c~ ~d x eut- bit 'on' 43e ;
439 ;
04S0 39F4 440 m~i20~ t-~tD spuvdm~3 04S2 ~9 441 b m~i2 ~ xeeut- 'eomm-nd' 442 ~
443 ;

- - ~ 338043 CP~ TLCS-47 ASSE~8LER V2 2 LOC 08J L$NE SOURCE ~rA~t~_~T
~ ; k-y c-n ?
44~ 1 446 ~
04S3 39ES 447 m i4~ tcntp ouv-1,2 04S~ 6SDD 448 b m i3 ; k-y-c-n r-aCy 4~0 ~
4~1 ~ cry n-bl- ?

4S3 ~
04S7 39F1 4S4 m iS t-stp spuvum,3 04S9 AO 4S~ b ~i61 045~ 39e4 4S7 t-~t sDuvdm,O
04SC 8D 458 o mail ; cry nabl-4~9 ;
04SD 2EOF 460 cmor crvrc,Sh'O
04SF A3 461 b r~i62 0460 3836 463 m~i61 s-t ~opO6,3 0462 8D 464 b mall 46~ ~
0463 3876 466 m~i62~ clr ~ooO6,3 467 ~
046S 39e4 46e tc~t puvdm,O
0467 AO 469 b mai61 470 ~
046e eD 471 b ~11 472 ~
473 ;
474 ;
47S J ~ cut-477 ~
0469 3ClS 478 r~i2 ld ~,eomm-h 046a D2 479 cmpr ~,Sh'2 046C 6~D9 4eO b cor- ; not impli-d comma nd 4e~, 046E 3C14 4e2 ld a,comm l 4e3 ~
0470 SF 4e4 t~t ~,3 0471 64FS 4eS b corxO
4e6 ~
4e7 ~ o nd 'oe' - 'O-' 4ee ;
0473 D9 4eg cmor a,SlOOlb 0474 OE 490 t-stp zf 047S 649E 491 b co-900 ; r-ad d~vic~ data 492 ~
0477 DA 493 cmor ~,SlOlOb 0478 OE 494 t-stp z-0479 64A4 49S b co--OO ; di~olay char-ctQr at ~p ci-i d 496 ; DOS ition 0478 D8 497 cmor ~,SlOllb 047C`OE 49e t~tp ~-CP/h TLCS-47 ~SSE~8LER V2 2 PaCE 5 LOC 08J LINE SOURCE ~I~T~_NT
047D 64ED 499 b co bOO ~ eondition~l poll 500 ~
047F D8 501 cmpr ~,~lOOOb ROr P~GE NO 18 0480 6SD9 502 b cor- ; not impli d comm~
nd 504 ~
505 1 in-~rt ch~r~ct-r on d-vic- displ~y 507 ~
04e2 3C37 50e ld ~,ld~ell 04e4 3F35 509 st ~,ld-t~l 04e6 3c3e 510 ld ~,ld~tl2 04ee 3F36 511 ~t ~.ld~tn2 512 ~
04eP 3C81 513 ld ~,d~t~Oh 04eC 30 514 xeh ~,h 04eD 3ceo 515 ld ~,d~t~Ol 048F 31 516 ~Ch ~, 1 517 ~
0490 2310 518 c-ll l dd 519 ~
0492 30 520 xeh ~,h 0493 3F38 5Z1 t ~,ld~tl2 5æ ;
0495 31 523 ~eh ~,1 0496 3F37 524 ~t ~,ld~tll 525 ~
049e 2350 52~ C~ h 527 ~
049A 65D9 52e b cor-049C 65D9 529 b cor-531 ~
532 ~ r--d d vic- d-t-- 534 ~
049E 2050 53~ co-900 c- 11 rkc -536 ~
04aO 65D9 537 b cor 04A2 65D9 538 b cor-539 ;
540 ;
541 ; dis~l~y ch~r~ct-r ~t p eifi d po-ition ~42 ;
543 ;
04A4 3C83 544 co-~OOI ld ~,d-t~lh 04A6 30 545 ~eh ~, h 04~7 3C82 546 ld ~,d~t~ll 04A9 31 547 ~Ch ~, 1 548 ~
04~A 2310 549 c~ll lrdd ~ 550 ~

1 33~43 CP/~ TLCS-47 ASSE~8LER V2.Z
P~GE 6 LOC 08J LlNE SOUROE ~1 a, ~ ._~, 04~C 3C80 551 ld ~,d~t Ol 04~E 3833 552 ~nd ~,~OOllb 553 ~
0480 5C 554 t-~t ~,0 0431 64CC 555 b co--10 ; l~d en~ng-556 ~
0483 30 557 xeh ~, h 0484 3F36 5SB .e ., ld - te ~ 0486 31 560 xch ~
04D7 3f35 561 5t ~,ld~t~l 562 ~
04S9 ~rAl 563 ld ~,d~t~Oh 0468 3838 564 ~nd ~,~lOOOb 04aD OE 565 t--tp 2~
048E 64DF 566 b co-~oe 567 ~
56a ~ ~5d fl~5hing RO~ P~6E NO.19 04C0 3C33 570 ld ~,di-olw 0~ 38Z1 571 or ~,~OOOlb 04C4 3F33 572 t ~di-plw 573 ~
04C6 ~0 574 eo-~Olt cALl 1~ h 04C8 65D9 576 b eor~
04C~ 65D9 577 b cor-579 ~
04CC 30 580 co-~10~ xch ~, h 04CD 3F38 581 ~t ~,ld~tlZ
582 ~
04CF 31 5e3 xeh ,l 04D0 3F37 584 ~t ~,ld~tll ; l-d ch~ng~
585 ~
04DZ 3C81 586 ld ~,d~t~Oh 04D4 3838 587 ~nd ~,tlOOOb 04D6 OE 588 t-5t D 2 ~
04D7 ~6 589 b eo-~03 590 ~
591 ~ l d l--hing 59Z ;
04D8 3C33 593 ld ~,di-plw 04D~ 38Z2 594 or ~,SOOlOb 04DC 3F33 595 st ~,di-Dlw 596 ;
04DE e6 597 b co~Ol 598 ~
04DF 3C33 599 co--OZt ld ~,di-plw 04E1 383E 600 ~nd ~,tlllOb 04E3 3F33 601 ~t ,di~elw ; msd ste-~y 602 ~

~ 338D43 CP/~ TLCS-47 ~SSE~8LER V2 2 P~GE 7 LOC 08J LlNE SOURCE ~
04ES 86 603 b co--Ol 04E6 3C33 60~ co--03 ld a,displw 04Ee 383D 606 and a,~llOlb 04E~ 3F33 607 st a,dl-plw I l~d st-~dy 6za 1 04EC 86 609 b co--Ol 610 ~

61Z I condltlon-l poll 6~3 1 614 ~
04ED 39SF 61~ co-bOO~ clr s-rvrc,l 04EF 20~0 617 call rkco 618 ~
04F1 6~Di 619 b corc 04F3 6SD9 620 b cor-621 l f~ I
- 6Z3 l ~~ ~d ~00~ - '07' 6Z~ I
04F~ D1 626 eo-xO cmpr a,~8001b 04F6 OE 6Z7 t--tp z-04F7 6SlB 628 b co-100 1 indic-tor pow-r c ontrol 04F9 D2 630 cmpr a,~OOlOb 04Fq OE 631 tc~tp z-04f3 6534 ~- b co æoo ; indicator mod- s~
l-ct 633 ;
04FD D3 634 cmpr a,tOOllb 04FE OE 63S t-~tp zf 04FF 6 4E 636 b co-300 ; d-vic- input cont rol Ra~ PaGE NO 20 ~
OSOl D4 638 cmpr a,Z8100b OS02 OE 639 ta-tp z-0S03 6S63 640 b co~400 ; d vic- output con trol OS05 DS 642 cmpr a,fO101b 0S06 OE 643 ta-tp zf 0S07 6~92 644 b co-SOO ; pow-r relay contr ol 645 ;
0S09 D6 646 cmpr a,~8110b OSO~ 0E 647 t-~tp z-0S08 6S~2 64e b co 600 ; cl-~r device disD
l.-y 649 ~
OSOD D7 650 cmor a,t8111b 0 WE OE 6S1 to-to zf 050F 6SC4 6S2 b co-700 ; divicu display co ntrol 1 33~43 cp~ TLcs-47 AssE~sLER V2 Z
paGE a Loc oaJ LINE SOURCE S(~lt~ JJT
6S5 l r--d d-vic- t-tu-656 l 657 ~
0511 3sA2 6se t--t ~pu-1,2 0513 6sDs 6~9 b cor-660 ;
661 ~
osls 3962 ~L~ rd-OOO~ clr ~pu~1,2 663 ~
0517 3ssf 664 clr ~ rvrc,l 66~ ~
0519 6SA2 666 b co-600 66e 669 ~
c7o ~ indlc-tor pow r control 672 ~
0513 3ceo C73 co-100~ ld ,d~t~Ol oslD OE 674 t--tp zf 051 E AB 67S b co-llO

677 1 indic~tor 'on~
6~8 ~
oslF 3C34 679 ld ~,di~piw 0521 3e æ 6eo or ~,tOOlOb 0523 3F34 661 ~t ~,di~plw 6e2 ~
0525 3903 6e3 ~ct pu-h,O ; indic~tor curr-nt ly on 6e4 ~
OS27 z3so 6e~ co-120 c-l~ h 686 ~
os2s 6SDs 687 b cor-6ee 6eg ; indic~tor 'off~
690 l 0523 3C34 691 co-llO ld ~,di~piw o52D 3e3D 692 ~nd ~,tllOlb os2f 3F34 693 ~t ,di~piw 694 ~
0531 3943 695 clr ~pu~h,O S indic~tor cur~-nt ly o-~
696 ;
0533 A7 697 b co-l20 6se ~
699 ;
700 ; indic-tor rod- ~ ct 702 ~
OS34 3C80 703 co-200 ld ~,d~t~Ol 0~36 OE 704 t-~tp zf as37 6S4~ 705 b co-210 706 ~
0539 3C34 7o7 ld ~,di~piw OS3D 3e21 70~ or ~,tOOOlb os3D 3f34 709 ~t ~,di~piw 1 ~38043 CP/~ TLCS-47 aSSE~8LER v2 2 Pa6E 9 LOC 08J LINE SOUROE ~I~T~
710 ~
OS3F 3913 711 -t ~pu h,l I indic~tor curr-nt ly l~ hing RO~ PaGE NO Zl ~
0S41 2350 713 co~220~ c~ll fl~h 714 ;
OS43 6SD9 715 b cor-0~4S 3C34 717 coo210~ ld ,di-plw 0547 383E 71e ' nd ~ 10b 0S49 3F34 719 ~t ,dl~piw 720 ~
OS48 3953 721 clr ~pu-h,1 ; indic~tor currntl y non-~l~-hing 7æ ~
OS4D 81 723 b co-220 724 l - 725 ~
726 ~ d-vic- input control - 72e ~
0S4E 3C81 7Z9 co-300~ ld ,d~t~Oh 0550 5F 730 t t ~3 0551 94 731 b co-310 732 ~
0~Z 65D9 733 b cor-734 ~
0554 36eo 735 co-310 diclr il,h~OO
0S~6 40 736 ld ~,~h'0 3 7 3aeC 737 out ~,~oplc 738 ~
05~9 3935 739 t ~puv-1,3 740 ;
~S58 3846 741 clr %opO6,0 742 ;
055D 3836 743 ot ~opO6,3 ; port ~-t 744 ;
055F 3640 74~ iclr il,hl00 746 ;
- 0561 65D9 747 b cor-748 ;
749 ;
750 ~ d-vic- output control 751 ;
7S2 ;
OS63 3C81 753 co~400 ld ~,d~t~0h 0S65 SF 7~4 t-~t ~,3 0~66 6S85 75~ b co-411 ; vlf outDu t di~bl-7~6 ;
0X e 39~S 757 clr ouv~l,l ; k - y bo~rd n~bl-~ 758 ~
056a 3C30 7S9 co-410 ld ~,d~taOl OS6C 5C 76~ t-~t ~,0 0~6D 38 761 b co~420 1 33804~

cp/~ TLCS-47 ~SSE~LER VZ.2 P~CE lO

LOC ODJ LlNE SOURC rFi I c. .J'I I
762 ~
os6E 36AA 763 diclr il,lOlOlOb 0570 47 764 ld ~, falll b 0~71 3FlC 765 st a,-irb 0~73 13 766 ~ch a,-ir 0~74 366a 767 iclr il,lOlOlOb ~ r-mot- co ntrol n~bl-768 ;
0576 6sDs 769 b cor-770;
os7e 36A~ 771 co-420- diclr il,lOlOlOb os7A 46 772 ld ~,fOllOb os7B 3FlC 773 st ,-irb 0~7D 13 774 ~cb a~ ir os7E 40 775 ld ,rOOOOb os7F 3AeD 776 out a,%opld ~ tim-r 2 5 top RO~ Pq6E ~0 22 ~
0581 366A ~ iclr il,lOlOlOb ; r-mot- co ntrol di~bl-77e 0583 6~Ds 779 b cor-7eo l 0585 36AA 7el co~411~ diclr il,lOlOlOb 0587 391~ 782 ~ t spuv~l,1 ~ koy bo~rd dis~bl-0~89 41 723 ld a~fh~1 o~sA 3F23 784 st a,~pu-k ossc 3F24 7es ~t a, puep 786 l ossE 2050 7e7 c.ll rkc-788 ~
0590 6s7e 7es b co-420 79o;
791 ;
792 ; pow r r lay control 793 ;
794 ;
0592 3cso 795 co-500~ ld ,dat-Ol 0594 OE 796 t-stp 2f 0595 9c 797 b co-501 7se ~
0596 3ss4 799 clr ~opO4,1 ; pow-r r-lay on 800 ;
a~ss 3932 801 ~-t spu-1,3 ; pow-r r-lay curre ntly on e oe ;
059~ 6sDs 803 b co eo4 ;
ossc 3al4 Bos co-~O1~ s-t ~opO4,1 ; pow-r relay off eo6 ~
ossE 3972 eo7 clr spu-1,3 ; pow r rclay currn ntly o-f eos ;
OSA0 65Ds eos b cor-elo ;
811 ;
al2 : ~l-~r d-vic- di~Dl~y 313 ;

CP~ TLCS-47 ~SSE~BLER V2 2 P~GE 11 LOC OBJ LINE SOURCE S
__ 814 ~
OSP2 4F 81S co-600 ld ~,Sh'-05P3 3F3S 816 st ,ldatml O~S 3F37 817 ~t ~,ld-tll 05A7 3F39 818 ~t ,ld~-ml OS~9 3F3B 819 st ~,lda-ll 820 ;
OS~B 3C36 821 ld ,ld-tm2 O ~D 3827 8æ or ~,SOlllb 05PF 3F36 823 ~t a,ldatm2 05B1 3C38 825 ld ,ld-tl2 OSB3 3827 826 or ,SOlllb 05BS 3F38 827 t ,ld-tl2 828 ;
OSB7 3C3~ 829 ld ,ld-~u2 05B9 3827 830 or ,tOlIlb 05DB 3F3a 831 st ,ld~ m2 832 ~
OSBD 3C3C 833 ld a,ld~512 OSBF 3827 834 or ~,S0111b RO~ P~GE NO 23 ~
0SC1 3F3C 83S t ~,ld--12 05C3 99 837 b eor-839 ;
840 ; d-vic- display control 842 ~
05C4 3C80 843 co-700 ld ~,d-t~Ol OSC6 OE 844 t-~tp z-05C7 92 84S b ~o~701 ; display steady 846 ~
OSC8 3C33 847 ld ,di-plw OSC~ 3823 848 or ~,S001lb 05CC 3F33 849 st ~,di-plw ; di~play fla sh i n q OSCE 23S0 8Sl co-703~ c-ll flash 8~2 ;
05D0 99 8S3 b cor-05Dl g9 8S4 b ~or-8SS ;
0SD2 3C33 856 co-701 ld a,displw OSD4 383C 857 ~nd ,S1100b OSD6 3F33 8S8 ~t a,displw ; display steady 8~9 ;
OSD8 8E 860 b oo-703 861 ;
862 ~
863 ; raturn 864 ;
86S ;

. .

CP/~ TLCS-47 QSSE~8LER V2 2 LOC OBJ EINE SOURCE ST~TE~ENT
- O~D9 3974 866 cor- elr ~puvdm,3 ~ cl-~r ~comm~nd ex -cut- ' e67 J
O~DD 64~3 B6B b ~ i4 869 ;
870 ;
871 ~
872 ~ k~y~c-n 874 ~
05DD 3995 B75 m i3t tc~t puv-l,1 05DF Q4 876 b m~i30 B77 ~
OSE0 3965 B78 clr puv~1,2 05E2 6457 B80 b m-i~
BB1 ~
05E4 2100 B82 m~i30 c-ll kry-05E6 3965 B84 clr puv-1,2 BB5 ;
O~EB 6457 B86 b m i~
B87 ~
B88 nd QSSE~8LY CO~PLETE, O ~RO~ ERROR(S~

cp~ TLCS-47 ~ssE~sLER V2.2 P~GE 1 3 sy~soL T~sLE
COE100OS18 COE110 os2s COE120 OSZ7 COE200 OS34 COE210 OS4S COE æo 0~4l COE 300 OS4E COE310 OS54 COE400 0563 * COE410 0S6~ COE411 O~BS COE420 os7e COE~Oo OS92 COE501 o sc COE600 OSA2 COE700 osc4 COE70 1 OSD2 COE703 oscE coEsoo o4sE COEPOO 04A4 COE~Ol 04C6 COEAOZ 04DF COEP03 04E6 COE~10 04CC
coEsoo 04ED COEXO 04FS * CO~PD 0013 co~aH 0015 CO~PL 0014 CORE osDs DaT~OH ooel D~TPOL ooeo D~TP,lH ooe3 D~T~lL ooez * D~T~ZH ooes * D~T~ZL ooe4 * DPTP3H 0087 * DaT~3L 0086 * D~T~4H ooes * D~T~4L ooBs * D~TRCT 0200 * DCH OOFE ~ DCL OOFC * DIspa 0032 * DISPH 0031 DrspIw 0034 * DrsPL 0030 DrspLw 0033 EIRs OOlC FLPSH 03S0 * INCOTH ooec * INCOTL ooe~
* INCOT~ ooes * KEST oo æ KESTOH 0043 KESTOL 0042 * KESTlH 004S * KESTlL 0044 * KESTZH 0047 * KESTZL 0046 * KEST3H 0049 * KEST3L 004e * KEST4H 0048 * KEST4L 004~
* KEsTsH 004D * KE5TsL 004C * KEsTsH oozl * KEsTsL oozo * KEYND 0029 * KEYNN 002~ KEYOD oozs * KEYON 002C
KEys OlOO * KEyss 02~0 * KEYSC OOOE * KEYT 0300 * KEyTs oocs * LcrcoT OOOD LD~SLl 0038 LD~SLZ 003C
LDas~l 0039 LD~5~2 003A LDPTLl 0037 LDATLZ 003e LD~T~l 003S LD~T~2 0036 * LDISP 0800 LECOTH ooeF
LECOTL ooeD LECOT~ ooeE LEDD 0310 * LrOVF 1 0600 * LIOVF2 ODOO * LRE~O OEOO * LVLFEX ocoo ~PIO 03ES
~AIOO 0448 ~I 1 044D ~IZ 0469 * ~PI20 0450 ~P I 3 05DD ~p~ I 30 osE4 ~ar4 04S3 ~ I S 0457 ~I61 0460 ~I62 0463 * ~rN 03EO * OVER2P 0072 * OVERZH oo7l * OVER2L oo7o * OVERPl oolz * OVERHl OOll * OVERLl oolo { P~RITT oooc * P~RITY 0008 * RDSOOO OSlS
* REPDC002e * RE~DN ooz7 * RE~DO 0060 * RE~D 1 0061 * RE~D20062 * RE~D3 0063 * RE~D4 0064 * RE~DS 0065 * RE~D60066 * RE~D7 0067 * RE~O~ 006~ * RE~OH 0069 ~ RE~OL006e RKCE w so * RNH 0068 * RNL 006D
* RN~ 006C RWRPCH oocp * RWRPCL ooce * RWRPC~ ooc9 SERVRC OOOF spucp OOZ4 SPUSH 0003 SPUSK OOZ3 spusL 0002* SPUTT oole SPUVD~ 0004 * SPUVSH 0000 SPUVSL ooos spuvu~ OOOl spw OOFF * sPws OOC7 * TAsLE oooo * TI~RZH OOF~ * TI~R2L ooFe * Tr~R2~ 00F9 Tr~RHN OOF6 * TI~RHO 00l8 Tr~RLN OOF4 * TI~RLO 0019 TI~R~N OOF~ * TI~R~O OOlR * VLFC ooo~ * VLFEC 0016 * vLFRs ooo9 * VLFT8 oooe * VLFTH ooo7 * VLFTL 0006 * VLFXP oosz * VLFXH OOsl * VLFXL ooso * W~RPCL OOC4 * W~RPC~ oocs ~ WRITEH 0026 * WRITEN 002S
DEFINED 171 USER sy~soL~s) 1 33~0~

CP~ TLCS 4i ~SSE~BLER V2.2 PPGE

LOC OBJ LlNE SOUROE ~
1 1 ;
2 ~ ~.1983. ;
3 ~ liov~ V1.0 4 ~ ~T~P4740P) 5 ~ ;
6 ~ vl~ oo~munic-tion routino 7 ~ ;
e, 9;

noli-t ~ t RO~ P~GE NO. O
0010 297 or~ h'O10 ~ routin- tabl-0010 66a2 300 b rO ~ ~tart bie d-tect 301 ;
0012 66FC 302 b r~i ~ ~i bit d-t ct 303 ~
0014 6719 304 b rc- ; -~d~--~ d-t-ct 30~ ~
0016 673E 306 b rcf ; comm-nd d-t-ct 307 ~
0018 67D4 308 b rcp ; p-rity ln 309 ~
OOlP. 67EE 310 b tr- ~ '-ck' or 'nack' 311 ~
OOlC 67FPJ 312 b rc tn ; ~top bit in 313 ;
OOlE 6834 314 b r td ; d~my to rc~tab 315 ;
ooeo 6838 316 b rc t~b ; ~to~ bit in 0022 6B41 318 b rdd ~ ; dat- in 319 ~
0024 6871 320 b rdp ; p-rity in 321 ;
0026 687F 322 b td-ck ; 'ack' or 'n~ck' 323 ;
0028 68B5 324 b r~--t 32~ ;
326 ~;7 327 ~
002P 68C2 32B b tO ~ tr-n-mit 329 ~

CP/I~ TLCS--47 ~SSEI~IEll_ER V2.2 P~GE 2 LOC OBJ LINE SOUROE SY~
002C 68EB 330 tl tdl S d--t~ out 331;
002E 6BF1 332 b trn~ d--t--:t 'mi' 0030 6909 334 b rd~y ~ d--my to rc--33 ~
0032 6912 336 b tdo ; d~t~ out 337 ~
0034 6930 33e b tp ; p rity out 339 ~
0036 693E 340 b tlci ~ 'lci' bit out 003e 6944 342 b rt~(ck ~ rvc~iv~ 'ack~
343 ~ .
003~ 69~3 344 b t~t ; out ~to 003C 6989 346 b r t ~ r~c~iv- ~stoD~

348 ~ T;
34g;
ROt'~ P~GE NO. 2~
0600 350 org h' 600 3~1 ~
352;
3~;3 ~ r gi~t~r pu~h 3~54-;
0600 3B06 3~5 ~ot %opO6, 0 060Z 3F12 3~6 iov~ t ~ ovor-l ;
0604 2910 3~57 xch hl,ovorll ` 3~58;
3~9; tim-rl t~rt 360;
0606 3ClB 361 ld a~timrho 0608 3FF6 362 ~t ,,timrhn 060~ 3C1~1 363 Id a,timrmo 060C 3FF5 364 ~t ~,timrmn 060E 3C19 365 ld ~,timrlo 0610 3FF4 366 ~t ,timrln 367;
368 ~ ch ck mod--369 ; ( norm~l or not 370;
0612 39eo 371 t ~t ~puv~h,O
0614 B5 372 b vlfOOl ;routin-- for abnorm ~1 373; - ; mod .

374;
37~S; chrck mod--376; ( tran--mit or not ) 377;
0615 39D0 378 t--~tp ~ouv~h,l 0617 ~13 379 b vl~O10;routin-- for transm it 3eO; - rnoc 0618 3BC0 381 efftD ~iDOO, O

CP/h TLCS-47 aSSE~SLER VZ 2 PaGE 3 LOC OSJ LlNE SOURCE S~l~rJ;T
061a 9E 38Z b vl~100 ;data -'1' 383 ~
0615 3979 3B4 ~lr vl~rb,3 061D aD 38~ b vltZOO ~to w r~

061E 2FlB 387 vlflOOI dd p-rlty,~h'l Sp-rity counter inc 06Z0 3939 388 - e vlfrb,3 ~2Z qD 3eg b vlf200 ;to warp 390 ~
391 ;
39Z ~ d~t~ out ( vl~O10 ) 0623 39e8 394 vlfO101 t--t vlftb,O
06Z~ a~ 39~ b vl~Oll 396 ~
0626 2FlC 397 ~dd p ritt,~h'l ; p~rity count 398 ~
0628 3B76 399 clr %ooO6~3 ; vlf outDut d~ta ' 1' 062a aD 400 b vl-ZOO ~ to w~rp 401 ~
0625 3~36 40Z vlfOlll ~ t %oD06~3 ~ vlf output d~ta ' O' 403 ~
404 ~ ;
403 ; warp routin- ( vlf200 ) ~06 ~
062D 3CFF 407 vl~ZOOI ld ~,~pw 062F 3FC7 408 t ~spwb 409 ~
0631 40 410 ld ,~h'O
0632 3FFF 411 ~t ~,~pw ; pw ch-nging 412 ~
0634 2a 413 r t ; warp 41~ ~
416 ~ routinm for bnormal mod-417 ; ( vl~OOO ) 41e ;
063~ 39D4 419 vl~OOll t-~tp ~puvdm,l ; lZOO bit tim~ cou nting ?
0637 6647 420 b v1~002 ; br~nch on ' yes' 421 ;
0639 39E4 422 t-~tp ~puvdm,2 ; lOs~c couting ?
0633 6654 423 b vlf803 ; br~nch on 'yes' 4Z4 ;
063D 39F1 4Z~ t--tp sDuvum,3 ; framing error ?
063F aE 426 b vlfO04 ; br~nch on 'ye,s' 4Z7 ;
RO~ PaGE NO 2~
0640 3904 428 vlfOO~I -t ~puvdm,0 ; cry n-bl- on 0642 40 429 ld ,~h'O
0643 3R8C 430 out ~,~oolc ; tim-r ~too 064~ 66ao 431 b vlf300 ; to r~turn routine 432 ~
433 ; 1200 bit count d ` 1 338043 CP/h TLCS--47 PSSE~SLER V2 2 LOC oar LINE SOURCE ST~TEhENT
434 ~
0647 3954 43~ vlfOOZ clr ~puvdm,1 ~ cl--~r '1200 bit- c ountlng' 0649 394l 436 clr ~puvur~l,0 ~ cle--r 'prcviou~
437 3 ~c~ - ~d n--~d~ d t~' 064s 3951 438 clr puvuA~ cl---r 'pr-viou-439 T ~ c- ~d r--quirr d-t-' 064D 3921 440 ~ t ~puvum~2 ; ~= ~d inhibit' on 064F 3900 44l ~t ~ouv h,0 ~ ~ t norm~l moae 065l 3950 442 elr ~puv h,1 ~ ~--t r c--iv- moae 443 ~
0653 eo ~ 'I b vl-00~ ~ br~nch on 44-~ 3 ;~ .--t cry n~bl--446 ~
447; lO~oc count d 44e ~
0654 393l 449 vlfO03~ ~et v~uvum,3 ; ~--t ~r~ming rrror 0656 3964 450 clr ~puvdm,Z ; cl----r 'lOsuc coun ting 45~ ~
06se 3C23 452 ld ~,~pu~k o6sA 3F24 453 ~t ,~pucp 06sc 2050 4~5 c--1 1 rkc--~56 ~
06SE 4F 457 ld ~,fh'f o6sF 3FF6 45e .e ~ tlmrhn 066l 47 459 ld ,~h'7 0662 3FFs 460 ~t ~,timrnn 0664 4C 46l ld ~,th'c 0665 3FF4 462 vt ~ti~rln 463;
0667 44 464 ld ~,~h' 4 066e 3AeC 465 out ~,%oplc ; llbit tim~r ~tt~
ng 066A 3975 467 clr ~puv~1,3 ; l~ ~t intr n~bl--46e, 066C 66AD 469 b vlf300 3 to r--turn routin~
470 ~
47l ~-- fr-ming rror Oit on 066E 3cls 472 vlfO04~ ld ~,~putt 0670 D0 473 cmpr ~,ih'0 067 l 66~3 474 b v 10040 475 ~
0673 3C~3 476 ld ~, f 0675 DF 477 cmpr ~,fh'-0676 66es 47e b v10060 479 ~
067e 3seo 4eo t t %i~00,0 067A 66se 4e l b vl 0050 4ez;
067C 40 4e3 ld ~,~h'0 067D 3F53 4e4 ~t ~, fr~--4es;
067F 4F 4~6 ld ~,~h'-RON PAGE NO.26 ` -122 l 338043 cp~ TLCS-47 ~s~c~ c~ v2 2 LOC 08J LI~E SOUROE 9~ hl 06eo 3FF6 4e7 ~t a,timrhn 06e2 47 4ee ld ~,~h~7 06e3 3FFs 4es .t ~,ti~r~n 06as 4C 490 ld , ~h~c 06e6 3FF4 491 ~t ~,timrln 492 ~
06se AD 493 b vlf300 494 ~
0689 38~0 ~95 v10060~ t~ t ~ipOO,O
068~ se 496 b v10050 497 ~
06sc 3971 4se elr puvum,3 ~ el-~r 'framing r ror' o6sE 3921 499 t puvum,Z ~ .. t 'eommand inhi bit' 0690 3ssl w 0 elr puvum,1 ~ el--r 'pr viou- c ~m~nd w 1 ~ ~ roquirr~ an an~w r' W2 ~ elr puvum,O ~ el--r 'pr viou~ c ommand 503 ~ ; n~ d~ data' 0692 3950 S04 elr ouv-h,l ~ ~-t r iv- mod-0694 3900 505 ~ t ~puv-h,O - ~ ~et normal mode 506 ;
0696 6640 S07 b vltoos ~ to '~et ery Rn~bl ~' 50e 06se 4F so9 v10050~ ld a,~h~
0699 3FF6 510 t a~timrhn 0698 3FFs 511 ~t ~,ti~rrn 512 ~
o6sD 3Fs3 S13 ~t ~,frano 514 ;
069F 4A 515 ld ~,~h'a 06ao 3FF4 S16 t a, e imrln 517 ~
06A2 ~D 518 b vlf300 ~19 ~
06A3 40 520 v10040~ ld ~.~h'O
06A4 3Fle 521 ~t ,~putt 522 ~
06A6 33C0 523 t-~tp ~ipOO,O
o6Ae AD 524 ~ vlf300 525 ;
06As 4F 526 ld , ~h~f 06AA 3Fs3 527 ~t a,~ramm s2e ;
06AC se s2s b v10050 530 ;
531 ;
s3z ; r-turn routin- ~ vlf300 ) 533 ~ ;
06AD 3C12 534 vlf300- ld ~,ovrral 06AF 2910 535 XCh hl,ov rll ; po~ r~gi~ter 536 ~
06~1 23 S37 r-ti s3e ;
s3s ~ ;
540 ~ RO routino 1 3380~3 CP/~ TLCS-47 ~SSE~BLER V2.2 LOC OBJ LINE SOUROE ~l~l~n_~l .
_ S41 ; ( in ~t~rt bit ) 54Z ~ I
543 1 ~t-rt bie 54~ ~
06B2 3BC0 545 rO~ t-~tD SipOO,O
06B4 66CZ 546 b rOOOOO ; it wa~ not '~tart 547 ~
06B6 3935 548 ` t ~puv-1,3 1 xt-rn~l intr.
549 ~ lnhibit 06B8 3961 551 clr ~puvum,2 ~ cl--r ~comm~nd in hibit' 552 ~ -06BA 3944 553 clr puvdm,O ; cl-ar 'cry n~bl-068C 3B36 554 t SopO6,3 1 port ~-t 5~5 ~
556 I n xt intr.
557 ~
06BE C1 558 ld h,Sh~l 06BF ~2 559 ld l,Sh'2 I to Rml routinr RO~ P~GE NO.27 06C0 41 561 ld ~,Sh'l ~ n xt intr. 1 bit tima 563 ~ `P

06C1 2P 565 rOOOO1~ r t 567 ~ ~t~rt bit not ~ound 568 ~
06C2 3984 569 rOOOOO~ t-~t ~puvdm,O
06C4 89 570 b rO1000 ; cry nabl- ?

06C5 40 57Z ld ~,Sh'O
06C6 3a8C 573 out ~,Soplc ; timcrl ~top 06C8 81 575 b rOOOOl ~ to r--warD

06C9 3940 577 rO1000~ clr ~puv-h,O ; to ~bnorm~l modc 57B ;
06CB 3994 579 tm-t ~puvdm,l 580 ;
06CD ~A 581 b rO1110 ; mu~t dct-ct 'cry nabl-~

583 ;
S84 1 1200 bit counting 06CE 3C8C S86 rOllOO~ ld ,incoth 06D0 3FF6 5a7 ~t ~,timrhn 06DZ 3C8B 588 ld ,incotm 06D4 3FF5 589 ~t ~,timr~n 06D6 3C8~ S90 ld ~,incotl 06D8 3FF4 591 ~t ~,timrln 5g2 :

1 333~4~

CP/~ TLCS-47 ~SSE~B ER VZ.2 pa6E

LOC osJ LINE SOURCE ~l~l t _~1 06D~ 4e S93 ld ~, th~e 06Da 3ReC S94 out ,Xoplc 59~ ~
06DD 3836 S96 t XopO6, 3 sge ; r turn ~99 ~
06DF 3CC7 600 rOl1112 ld ~,sp~b 06E1 3FFF 601 t ~,spw 6oe ~
06E3 3C12 603 ld ~ov-r~l 06ES 2910 604 ~ch hl, overll 60S l 06E7 3a46 606 clr ~opO6,0 607 ~
o6Es za c08 roti 609 ~
06E~ 3csc 610 rOlllO~ ld ~,lncoth 06EC 3FF6 611 ~t ~,tl~r~n 06EE 3ce8 612 ld ~ ~,lncotm 06F0 3FFS 613 st ,tl~r~n 06F2 3C8~ 614 ld ,incotl 06F4 3FF4 61S ~t - ~,tl~rln 616 ~
06F6 44 617 ld ~, 2~h~ 4 06F7 3~8C 618 out ,~oplc 619 ~
06F9 3~36 620 ~-t ~opO6~3 621 ~
06F3 9F 6 æ b rOllll 623 f 626 ~
627 ;
62B ; Rml routlne 629 ; ( in ml blt ~ ;
630 ;
631 ;
632 ;
06FC 39F9 633 rmi te~tp vlfr~,3 06FE 670F 634 b rmiOOO ; 'd~t~' from ECO
63~ ;
636 ; ~ d~ from ECU
637 ;
RO~ P~GE NO 26 0700 Cl 63e ld h, th'1 0701 E4 639 ld 1,2~h'4 ; to Rc~ routlne 640 ;
0702 40 641 ld ~, ~h~O
0703 3F16 642 st ~,vlf c ; vlf crror countcr cl-~r 643 ;
070~ 3941 644 clr ~puvum,O ; 'Dr-vious comm~na CP/~ TLCS-47 ~SSE~8LER V2 2 P~ OE 8 LOC OBJ LlNE SOURCE sl~lt~T
64~ ~ n dv d-t~
0707 39~1 646 clr vDuvum,1 ~ 'pr viou~ : nd 647 ~ r-quir- ~n ~n~
w~r' 648 ~p rity ~ VLF count r 649 ;cl--r 6 0 ~
0709 ZD08 6~1 rmiOOl~ ~t ~h'O,p rity 0708 2D0~ 6SZ ~t th'O,vl-c ; p~rity count-r 6 3 ~ ~ VLF count-r cl ~r 6~ n-xt intr 6~6 1 070D 41 6~7 ld ~,th'1 ~ n-xt intr lbit t ir~

6~9 1 ~ D
660 ~
070E 2~ 661 rmiO02~ r t ~ p 662 ~
663 ; - 'd~t~ ' from E~U
664 ~
070F 39el 66~ rmiOOO t-~t ~Duvum,O
0711 9~ 666 b rmiO03 ~ not n--d d-ta 667 ~
0712 C2 66e ld h,~h'2 0713 E2 669 ld 1,~h'2 ; to Rdd routin-670 ~ -0714 eg 671 b rmiOO1 ~ to p~rity cl--r 672 ~
673 ~ not n- d 'd~t~' 674 ~
071~ Cl 67~ rmiO03~ ld h,~h'1 0716 EE 676 ld 1,Zh'- ~ to R~td routin-677 ~
0717 43 678 ld ~,~h'3 ; n-xt intr 9bit tim-679 ~
071e BE 6eo b rmiOOZ ; to rc-w-rp 681 ;

6e4 ;
6e~ ;
6e6 ~ Rc~ routln-6e7 ; ( in comm~nd rcc-iv- ) 6ee ;
6Bg ~
0719 ZFl~ 690 rc~l ~dd vlfc,~h'1 ; vlf countcr 691 ; in~r _~~ .. t 0713 2E3~ 692 cmDr vlfc,~h'3 071D 84 693 b rr~OOO ~ vlfc ~ 3 694 ~
69~ ; ~ddr-~v chrck 696 ;
07~E 3C09 697 ld ~vl~rb 0720 07 698 rorc 0721 3837 699 ~nd ~,~h'7 CP/h TLCS-47 RSSEffl LER vZ 2 LOC 03J L~NE SOUROE Yl~l~ _RI
0723 3F13 700 .e ~. co~ d ~ ~d~_ in 701 ;
0725 3A20 702 in ~ipOO,~
0727 07 703 rorc 0728 07 704 ro~c 0729 3833 70~ ~nd ~,th'3 072B 3802 706 ~dd ~,Sh'2 ; ~pu ~ddr _~L
70~ l 072D 3E13 708 c~pr ~,co~m-d 072F sa 7o9 b rc-OOl I ~ ch-ck NG
710 ~
711 ~ n xt intr - I _ 712 ~ m~tch d ~ -713 ~
0730 Cl 714 ld h,th'l 0731 E6 715 ld l,~h'6 3 eO Rgf routinc 716 ~
0732 41 717 rc~O02~ ld ~,th'1 ~ noxe intr lbit t im--718 ~
719 ~ p 7ZO ~
0733 2R 7Z1 r~O03l r t ~ r_ w~rp 7æ 1 723 ~ hi~t 7Z4 ;
0734 3C09 7Z5 rc~OOOI ld ~,vlfrb 0736 07 7Z6 rorc ~ ; hlft 0737 3F09 727 - t ,vlfrb 0739 BZ 729 b rc-O02 ; n xt intr lbit t imw 730 ~
731 I n-xt intr ~ddr---732 I mi-- m~tch d 733 ~
073R C1 734 rc-OO1~ ld h,Sh'1 0733 EE 735 ld l,Sh'- ; to R~td 073C 42 737 ld ~,th~2 ; nrxt intr 73B ; 6 bit ti~-073D ~3 740 b rc~O03 $ ~ p 742 ;;;;;S3l~ll;;;;;;;;;;;~;;;;l;;;;;;;;;;;;;
743 ;;;~;;;Il;;;;;;;;;;;;;~;~;;;;;;;;;;;;;;;;
744 ;
74S ;
746 ; R~f routinv 747 ; I in c~ d r cniv- ) ;
74e ;
749 ~
750 ; d~t~ ~ t 7~1 ;
073E 2FlR 752 rcf ~dd vlfc,Sh'l ; VLF count-r 7~3 ; ir _~ t `;

CP/~ TLCS-47 ASSE~8LER V2 2 LOC 08J LINE~ SOUROE ~1~l~ _~1 RO~ PRGE NO 29 0740 2E7R 754 cmpr vl~c,~h'7 0742 OE 755 t--tp 2f 0743 8F 756 b rcfOOO I br-nch on 757 1 eomm~nd ~i 0744 2E8A 758 emDr vlfc,~h' e 0746 OE 759 t--tD z-0747 94 760 b rcfOOl ; br~nch on 761 I r-~d fun~tion 762 ;
074e 3C09 763 ld ~,vlfrb 074R 07 764 rore 074B 3F09 76S xt ~,vl~ra ~ d~t~ ~ot 766 l 767 I n xt intr 768 ~
074D 41 769 re-002s ld ~,~h'l ~ n xt intr lbit t i m--771 1 ~ ~ p 772 ~
074E 2A 773 refO06s r t ; ~ p 774 ;
775 ~ rv~d c d lo 776 ~
074F 3CO9 ~ refOOOs ld ~,vlfrb 0751 3F14 77e ~t ~,eo~m~l 779 ~
0753 BD 780 b rcfO02 I to nrxt intr 781 ~
782 I r- d =~ ~d hi ~e3 ~
0754 3C89 784 rc-OOls ld ~,vl~rb 0756 07 7B5 rore 07S7 07 786 rorc 075e 07 7e7 rorc ~
0759 3e31 7ee ~nd ~,~8001b 075B 3e æ 7eg or ~,tOOlOb 075D 3F15 790 ~t ,comm~h 792 ; r--d , writ- ?

075F 3FFD 794 ~t ~,dem 0761 3C14 795 ld ~,com~l 0763 3FFC 796 ~t ~,del 0765 4F 797 ld ~,~h'~
0766 3FFE 798 ~t ~,dch 799 ;
076B 33 800 ldl ~,Qdc 0769 3F25 801 ~t ~,writ n 076B 32 802 ldh ~,Qde~
076C 3F27 803 ~t ~,r-~dn ~04 ~
076E DO eo5 empr ~,~h'O
076F OE eo6 t--tp z~

CP/~ TLCS-47 RSSEh8LER V2 2 P~E 11 nr 08J LINE SOUROE Sl~lt _~T
0770 8C B07 b rc~100 ; na d not r-ading BOe 1 809 t r-ad comm~nd elo ~
0771 3901 ell ot sDuvum,O ~ sot pr vious comm and n- d d~t~
B12 ~
0773 40 el3 ld ~,th~O
0774 3F2B B14 st a,r--dc ~ r--ding counecr t B16 ; - out ~m rk~ ~
el7 ~ n xt ~dr_Js ele 0776 3876 819 rc~O05~ elr ~opO6,3 ~ out 'mark' B20 ~
077B C1 B21 ld h,~h'1 0779 Ea B æ ld ~,rh~e ~ to Rcp routin~
B23 ;
077R 40 B24 ld a, ~h' O ~ n-xt intr l/Z
B25 ~ bit tim-B26 ~
0778 BE B27 b rc~O06 ; to ~ D routin .

B2B ;
B29 ;- writ- : d 7 7 e30 ;
077C 3C25 B31 rc~100~ ld ~,writ n 077E DO e32 cmpr ,th'O
077F OE 833 t-~tp z~
ROh PR OE Na 30 07eo 6776 834 b rc~O05 ; to Rcp routinc e35 ~
B36 ; ~ writ- commard e37 ;
07B2 DF B3B cmpr ~, ~h' 0783 OE B39 t-stp 2 -07B4 85 B40 D rcfllO ; condition~l poll B41 ~
07es 3914 B42 s-t puvdm,1 ; s~t pr-viou- comm and qulr-B43 ~ answcr 07B7 2DlD B44 st th'l,lcicot B45 ;
07eg D1 846 cmpr ~,~OOOlb 07e~ 9e B47 b rc~120 ; ~rcad dcvicc data e4B ; command B49 ~
B50 S r--d spu status command B51 ;
07B8 41 B52 ld a,~h'1 078C 3FZ4 853 st a,spucp B54 ;
07e~ 3COZ e~5 ld ~,5pu-1 0790 3F06 B56 st ~,vl~tl 0792 3C03 857 ld ~, ~Dush 0794 3F07 858 st ~,vlfth 129 l 338043 CP/~ TLCS-47 ~SSE~BLER VZ.2 P~GE lZ

LOC osJLINE SOURCE S~IU~
e~9 l 0796 5776 860 b refOOS
e s6z ~
e63 ~ r-~d d-~ie- d~t~ ~d 864 ~
e6~ ~
07se 3C4Z 866 rcS120l ld ~,ko~eOl 079A 3F06 867 t ~,vl-tl 07sc 3C43 s6e ld ~,ko~tOh o7sE 3F07 869 t ~,vl~th e70 1 07A0 3CZ3 871 ld ~vDu~k 07A2 OE 87Z tw-tp ~S
07A3 AE 873 b re~121 87~ ~
07R4 3FZ4 a7~ ~t ~,~pucp 07P6 40 876 ld ~,Sh'O
o7~7 3F17 877 ~t ~,-pur-878 ~
o7As 44 879 reSlZZI ld ~,Sh~4 07~a 3F26 seo t ~,writ-h 07AC 6776 se2 b refOO~
se3 ;
07RE oe Be4 re~lZ1l inc 07~F 3FZ4 se~ t ~,-pucp 0791 4F ee6 ld ~,Sh'~
07~2 3F17 ee7 t ~,~ouff ; no k-y ~troke eee ~
07B4 ~9 ses b re~l æ
ego ;
891 l conditicn~l poll 892 ~
078~ 3C4Z 893 re~llOI ld ~,k-~tOl 0737 3F06 894 ~t ~,vlftl 0739 3C43 89~ ld ~,kc~tOh 0735 3F07 Bg6 ~t ~,vlfth ; d~t~ in es7 ~
073D 41 sse ld ~,Sh'1 078E 3FOD 899 vt ~,lcicot RO~ PqGE NO.31 o7co 3F24 9oo ~t ~,~pucp 901;
07cz 3~76 902 clr ~opO6,3 903 ;
O7C4 3914 904 ~t ~uvdn,1 90~ 3 07C6 3CZ3 906 ld ~,~pu~k 07cs OE 9o7 t-~tp 2~
07C9 sF 908 b rcrlll 909 ~
07CA 40 9lO ld ~,Sh'O

CP/~ TLCS-47 ~SS~r FR VZ. 2 LOC 08J LINE SOUROE ~rQ~ r 07C8 3f17 911 t ,-pu--07CD 6776 912 ~- b rcS003 9~3 ~
07CF 4F 914 rcflll~ ld ~,Sh'S
07D0 3F17 91S t ~,sDuf~ ~ no k~
07D2 6776 916 b rcSOOS

sle 920 ~ Rcp routin- ( comm~nd r--d ) sæ, 923 ~
07D4 39C8 924 rcp t-stp p~rity,O
07D6 ~9 92~ b repOOO ~ p~rity rror 926 ~
07D7 3C25 927 ld ~,~rit n 07D9 DF 92e cmpr ~ th~ t 070~ ~1 929 b rcD100 ; not condition~l D
oll 930 ~
07D8 2EOF 931 cmpr s-rvrc, Sh' O
07D0 ~1 93Z b roplOO ~ d~t~ in 933 ~
07DE 39S4 934 clr ~Duvdm,l ; cl--r pr vious co mn nd 93~ ~ no d ~nswor bit 07E0 ~9 936 b rcpOOO
937 ~
07E1 394e 93a rcplOO~ clr vl~tb,-O ~ ~end '~ck' 939 t 940 ; mod- ch-ng-94~ ;
07E3 3910 942 rcpO03 s-t spuv - h, 1 ; ch~ng- modQ
943 ; to 'tr~n~mit' 944 I noxt intr 94S ;
07ES Cl 946 rcpO04 ld h, Sh' 1 07E6 EP 947 ld l~ Sh' ~ ; to Tr~ routine s4e 07E7 40 949 ld ~,Sh'O ; n-xt intr 1/2 b~
t 9SO ; tim-9~ ' P
9S2 ~
07Ee 2Q 9S3 r t 954 ;
95S ; D~rity rror 9~6 ;
07E9 3921 957 ropO00~ ~-t ~cuvum,2 ; ~t 'comman~ inni bit' gse ;
07E8 390e 9S9 -t vl~tb,O ; nd ~n~ck' 07ED ~3 g61 b rcpO03 962 ;
963 ;
96~ ;;;;;;;;;;;;;;;;;;;;;~;;;;;;;;;;;;;;;;;;;

CP~h TLCS-47 ~SSE~BLER VZ 2 P~E 14 LOC OBJ LINESOURCE ~1~l~ J T

96e ;Tr~
969 ~ $
970 ~

972 ;od- ch~nge 973 ;
0~E 39~0 974 tr~ clr puv-h,1 ; mode ch~ng-97~ I to r c-iv- moce 07F0 39E1 976 t-~tp ~puvum,2 07F2 B7 977 b tr~OOO ; br~nc~ or 978 ~ 'comm~nd inhibit 979 ~ n-~t iner seo ~
07F3 C1 9el ld h,Sh'1 07F4 EC 982 ld l,Sh'c ~ to Rc~tn routine ge3 ~
07F~ 4~ 984 tr~OO1l ld ~,Sh~ ; noxt ~ntr 98S ; bit ti~e se6 ~
987 ; ~ p - 988 ;
07F6 2~ 989 r-t 990 ~
991 ~ n-~t intr 992 ; in p~rity rror 993 ~
O~F~ C2 994 tr~OOOI ld h,Sh'2 07F8 EO 995 ld l,Sh'O ; to Rc~t~b routin-996 ~
07F9 B~ 997 b tr~OO1 sse;
999 ;;;;;~;3;;;;1T~;I;T;;1~ ;13;;;;~;;;;
1001 ~
1002 ;
1003 ; Rc~tn routine 1004 ~ ;

1006 ~
07F~ 39B9 1007 rc-tnl t--t vlfr~,3 07FC 6820 lOOe b rc-tnO ; fr~ming error 1010 ~ rc~d ?

07FE 3C27 1012 ld ~,r-~dn ROh P~GE NO 32 oeoo DO 1013 cmpr ~,SOOOOb OeO1 OE 1014 t--tp ~f OeO2 97 101~ b re-tnl ; br~nch on 1016 ~ r~d com~an d 1017 ;ro~d or writ- comm~nd 132 1 33804~

CP/~ TLC5-47 ~SSE~8LER V2 Z
PoGE 1 LOC OBJ LINE SOURCE Yl~ltm_~
1018 ~
oao3 3940 1019 rc~tn6l clr ~puv~h,O ~ to ~bnorm~l mod-1020 ~
1021 ~ 1200 bit tlm r on loæ ~
oeos 3914 1023 rc tn2 ~mt puvdm,1 ~ '1200 bit tim~r ' on 0807 42 102~ ld ~h~2 OeO8 3FF6 1026 t ~ timrhn oeo~ 4C 1027 ld ~,~h~c 080D 3FFS 1028 t ~,timrmn 080D 4F 1029 ld ,rh'-080E 3FF4 1030 ~t ~,timrln 1031 ~
0810 48 1032 ld ~,~h~8 0811 3P8C 1033 out ~ %oplc 1034 ~
103~ ~ xtrrr~l lntr -n-bl-1036 ~
0~13 397S 1037 rc~tn3~ clr ~uv-1,3 1038 ~
1039 ~ r turn lOW ~
OB15 66DF 1041 b rO1111 1 0~2 ~
oe 1 7 3C2~ 1043 rc~tnl ld writ n 0819 DO 1044 cmpr ~,~OOOOh 081~ 31 104~ b rc tn7 ; br-nch on 1046 ~ writ- comm~nd 1047 ~
1048 ~ comm-nd nd d 1049 ~
0813 39 W 10 W ~lr ~puv-h,O ; to ~bnorm~l modc

10~1 ~
081D 3934 10~2 t ~puvdm,3 ; ~comm~nd x~cut-' lOS3 ~
OelF 93 10~4 b rc tn3 ~ to rcturn lOS~ ~
10~6 ~ - r~ming rror 10~7 ~
0820 39 W 10~8 rc~tn0 clr ~puv~h,O ~ to ~bnorm~l moae 08 æ 3931 1060 ~-t ~puvum,3 ; ~r~ming rrror 1061 ;
0824 4F 1062 ld a,~h'-082~ 3F~3 1063 ~t ~,~r~mw 0827 3FF6 1064 ~t ~timrhn Oe29 3FF~ 106~ st ~,timr~n 0829 4~ 1067 ld ~,~h~
Oe2C 3FF4 106e t ~,timrln OB2E 3~36 1070 ~-t ~ooO6,3 1071 ~
Oe30 93 1072 b rc~tn3 ~ to rrturn CP/~ TLCS-47 ~SSE~8LER V2 2 P~GE 16 LOC 08J LINE SOURCE Sl~lt~_~
1073 ~
0831 3910 1074 rc~tn7s s t spuv h,1 1 eO tr~n~mit mode 0833 83 107S b re~tn6 1078 ~f;~ ;lllJ~ 7 1080 ;
lOBl ~ R-td ~ d-~y routino ) loez 1083 ~
1084 ;
108S ~ - n-xt intr ~ -1086 ~
0834 oe 1087 r tdl ld h,~h'2 oa3S EO 1088 ld l,~h'O ~ to Re~t~b 1089 ~
0836 4~ 1090 ld ~ th'S ; n-xt intr 1091 ~ 11 bit ti~o 1093 ~
0837 2~ 1094 r t lO9S

1100 ~ Re~t~D
1 101 ~ ~ ;
1102 ~ -1103 ~
1104 ~ ch-ck seoD bit - llOS ~
0838 3989 1106 re~t~Ds trst vl-rb,3 083P ~0 1107 b re~tnO ; fr~ming crr~r 1108 ;
0838 3940 1109 re~t~ls elr ouv~h,O ; to ~G~. ~1 mode 1110 ~
Oa3D 397S 1111 elr spuv-1,3 ; xtrrn~1 intr en ~Dl-1112 ;
083F 66DF 1113 b rO1111 ; rrturn 1114 ~
111~;
1116 ;
1117 ; Rdd ( d~t~ r e-iv- ) 1118 ;
1119 ;
1120 ;
RO~ PqGE NO 33 ~
0841 2E3~ 1121 rdds empr v11'e,~h'3 0843 OE 11 æ t--to ~1' 0844 98 1123 D rddOOO ; d~ta l sut 1124 ~

CP~h TLC5-47 ~SSE~LER V2 Z
PqGE 17 LOC OBJ LINE SOUROE Sl~l~ -~1 084S 2E7a 1125 emDr ~lfc,Sh'7 0847 ~8 llZ6 b rddOOl -1127 ~
112e 3 d~t~ h s t 1129 ~
oe48 3 oe e 1130 ld ~,r~cde oe4~ 0~ 1131 ro~c oe4a 38Z1 113Z or ~.~OOOlb 084D 31 1133 x~h ~,l OB4E C8 1134 ld h,Sh'B
oe4F 3C09 113S ld ~,vl~rb 08Sl OF 1136 st ~,Qhl ~ d~t~ in 1137 ~
08S2 3B76 1138 elr XopO6,3 ; ot 'm~rk' 1139 ~
1140 S to Rdp routin-1~41 1 oes4 e 11~2 ld h,Sh'2 0855 E4 1143 ld l,Sh'4 ~ to Rdp 08~6 40 114-~ ld ~.th'O ~ noxt intr 1146 ~ l/2 bit ti~

1149 ~
oe~7 2~ 1150 rddO oe r t 115~ ;
llS2 ; d~t~ ir 1153 ~
08S8 2F1~ 1154 rddOOO ~dd vl-e,Sh'l

11~5 ;
08S~ 3C2e llS6 ld ~,r~dc oesc OS llS7 rol~ ~
08SD 383E llSe ~nd ~.tlllOb oeSF 31 llS9 xeh ~,1 0860 C8 1160 ld h,th'8 oe61 3C09 1161 ld ~vlfrb 0863 OF 1162 st ~,Ohl d~t~ in 1163 ~
0864 41 1164 ld ~,Sh'l oe6s e 116S ld h,fh'2 oe66 EZ 1166 ld l,Sh'2 1167 ~
0867 97 116e b rddO02 ; to r-turn 1169 ~
1170 ~ ~hi~t 1 171 $
0868 2F1~ 1172 rddOOl add vlfe,Sh'l ; vlf eounter 1173 ; i ncr ~ ~~
oe6~ 3C09 1174 ld a,vlfrO
oe6c 07 117S ror~
Oe6D 3F09 1176 st ~,vlfrb ; shift 1~77 ~
086F 41 1178 ld ~,th'l 1179 ~

135 l 338043 cp/~ TLCS-47 AssE~sLER VZ.2 paGE 18 LOC osJ LI NE SOUR OE Sl~lt~NI
oe70 97 1180 b rddOOZ ~ to r turn 1181 ;

e4 ;

1186 ~ Rdp t p rity bit ~ ~
1187 ~ ;
se lles ~
0871 3sc3 ll9O rdp~ t- tp p~rity,O
oe73 sc ll9l b rdpOOO ~ p-rity r~or 1192 ~ .
oe74 3s4e 1193 clr vl~th,O ; ~t '-ck' 0876 3910 1195 rdpOO11 t puvrh~ 1 ; ~t eO tr~n-mit m -~
od-1196 ~
1197 ~ to Td~ck routin-1198 ~
oe7e C2 ll99 ld h,~h~2 oe7s E6 1200 ld 1, ~h~6 ~ to Td~ck 1201 ~
0e7R 40 1202 ld ~, ~h~ O ; n-xt intr 1/2 bit 1203 ~ ti~
.

1204 ~ ~ p 1205 ~
oe7s ZR lZ06 r t 1207 ~
120e 5 ~ot 'n-ck' 1209 ~
oe7c 3soe lZ10 rdp0001 t vl~tb,O ; ~t 'n~ck' 1211 ~
oe7E 36 1212 ~ rdDOO1 ~ to r-turn 1216 ~
1217 ;
1218 ~ Td~ck out t '~ck' or 'n-ck' ) 1219 ~ ;
læo ~ .
12Zl ~
oe7F 3sso lZ æ td~ckl clr ~puv~h, 1 ; to r~c-iv- modc 1223 ;
lZZ4 ; to Rd~t routin-1 æ5 ;
RO~ PAGE NO 34 *
oesl cz 1226 ld h, th'2 ose2 Es 1 æ 7 ld l,~h' e ~ to Rd~t æe ~
ose3 45 lZZ9 ld ~,~h~ 5 ; n-xt intr lZ30 ~ 11 bit timr lZ31 ; r- ~ p CP/~ TLCS-47 ~SSE~8LER V2 2 PaGE 1 9 Oee4 2~ 1233 r t lZ35 ~
1236 ~ l 1237 ; Rd--t ~ stop blt ) lZ38 lZ39 lZ40 ~
08e5 3989 lZ41 rd--t tc~t vl~rb,3 Oee7 6B20 lZ42 b rc-tnO I stop bit rror lZ43 ~
08e9 39ce lZ44 t-~tp vlreb~O
08e8 PE lZ45 b rd~-t4 lZ46 1 oeec 3c2e lZ47 rd- t6 ld a,rc~dc 088E oe lZ4e inc OeeF 3FZ8 1249 ~t ~,r~dc Oe91 3E27 lZ50 cmpr a,r--dn Oe93 OE 1251 t-~tp ~-0894 P4 lZ5Z b rd~-t3 ~ th- cnd lZ~3 ~
lZ54 ~ gain 1255 ~ 1200 bit ti~ r st~re 1 ~ I
0895 42 1257 ld ~,~h'2 Oe96 3ff6 l25e ~t ~,ti~rhn oege 4C ~259 ld ~,~h'c Oe99 3FF5 1260 t ,t~lmr~n Oe98 4f 1261 ld ~,~h' r oegc 3FF4 1262 st ~,ti~rln 1263 ~
Oe9E 48 1264 ld ~,~h'8 Oe9f 3P8C 126~ out a,~oplc ; tim-r start 1266 ~
08~1 3914 1267 sct Duvdm,1 ~ 1200bit timer ~it 126e ~ on Oe~3 ~8 1269 b rdastl lZ70 ~
- 1271 ; s-t 'c~ ~d x-cut- bit ' 127Z ;
08a4 3934 1273 rdast3~ ~-t Duvdm,3 1274 ;
08~6 3941 lZ75 clr spuvum,O ; clear Drrvious co mm-nd n- d 1276 ; data bit 1277 ; to r-turn 1278 ;
08~8 3940 1279 rda-tl clr spuv~h,O 5 to abnormal mode 12eO ;
oeq~ 3975 12el clr spuv-1,3 ; l'st intr Rnabl~
1282 ~
oe~c 66DF 1283 a rOllll ; return 1284 ;
08~E 3C16 128~ rdast4 ld a,vl~c oeso oa 12B6 inc CP/~ TLCS-47 ~SSE~8LER V2 2 P~OE 20 LCC 08J LINE SOUROE ~I~Tt~_Nr 08B1 3F16 1287 st ~,vlf c 1288 ;
08B3 DS 1289 cmpr ,Sh'~
0834 38 lZ90 b rd~t~
lZ91 ;
08BS 3924 129Z s t puvdm,Z ; 10 s c bit on 08B7 3B36 lZ93 s-t %opO6,3 08B9 69B6 lZ94 b rvtO04 lZ9~ ~
08D8 3CZ8 lZ96 rd~-t5 ld ,r-~dc OeDD 09 lZ97 d-c ~
08BE 3FZ8 lZ9e st ~ re~dc lZ99 RO~ PaGE NO 3S
08C0 688C 1300 b rd~-t6 1301 ;
1302 ~
1303 ~ ;
1304 ; TO routin-130S ~ I
1306 ;
1307 ;
130e ; st~rt bit ?

08C2 3BC0 1310 tO~ t fftp XipOO,O
08C4 94 1311 b tOOOOO ; not st~rt bit 131Z ~
08C5 393S 1313 s-t spuv~1,3 ; xt-rn~l intr 1314 ; di~blc 08C7 40 131~ ld ~,th'O
08C8 3FOC 1316 st ~,p~ritt ; tr~n~mit p~rity 1317 I rev-t 08C~ 3C06 1318 ld ~,vl~tl oeCc 3F08 1319 st ,vlftb ; tr~nsmit dat~ in 13ZO ;
08CE 3a76 13Zl clr XopO6,3 ; out ~m~rk~
13Z2 ;
13Z3 ~
1324 ; ne~t intr 132~ ;
08DO CZ 1326 ld h,Sh'2 08D1 EC 13Z7 ld l,Sh'c ; to Tdl routine 1328 ~
08D2 40 1329 ld ~,Sh'O ; lJ2 bit time 1330 ;
1331 ; r~-w~rp 1332 ;
08D3 2~ 1333 rot 1334 ;
133~ ~
1336 ; st~rt bit rror 1337 ;
08D4 3914 1338 t00000l set ouvdm,1 ; '1200 bit countin ~' - ~ I 338043 CP/~ TLCS-47 pssE~BLER VZ.2 paGE Z 1 LOC 08J LINE SOUROE S r~i 1~ .
1339 ~
oeD6 3940 1340 clr puv~h,O ~ ~bnorm~l mod-134Z ~ Oue ~p~c-~
1343 ~
osDe 3B36 1344 ~ t ~opO6,3 ; out '~p~c-' 134~ ~
1346 ~ lZOO bit tim r continu l347 ~
oeD~ 3cec 1348 ld ~,incoth 08DC 3FF6 1349 ~t ~,ti~rhn 0eDE 3csB 13SO ld ~lncotm OeEO 3FF5 13~1 t ~,timr~n oeEe 3ce~- 13~2 ld ~,incotl oeE4 3FF4 13~3 ~t ~,ti~rln 13~4 i oeE6 48 13ss ld ~Sh~ e 06E7 3~ec 13~6 out ~,%oplc ~ 1200 bit tim-r ~o ntinu-~
13~7 ;
l3~e ~
13~9 ; r-turn 1360 ~
oeEs 66DF 1361 b rOllll L363 ~
1364 ~ ;
136 ~ Tdl routin-1368 ~
1369 ~ modo ch~ng-osE3 39 w 1371 tdl~ clr Duv~h~l ; r-c-iv- mod-1372 ~
1373 ~ n xt intr 1374 ;
0eED C2 137~ ld h,Sh'2 O~EE EE 1376 ld l,Sh'- ; to Tr~i 1377 ;
0eEF 40 137e ld ~,Sh'O ; noxt intr 1/2 bit 1379 ; tim-13eO J
1381 ; ~- ~ p 1382 ;
oeFo 2a 13e3 r t e~ ;~;;;;;;;;;;;;;;;;;;;~;;;;;;;;;;;;;;;;;;;
e6 " " ;,;;;;;;;;;;;;,;,;" ,;;;;,;;;;;;;;;;;
l3ee 1389 ~ Trml routin-1390 ;
1391 ;
1392 ~
1393 ; :- nd ?

CP~ TLCS-47 RSSE~3LER V2.2 PRGE æ

L~C OBJ LlNE SOUROE ~~ T
1394 ~
0eF1 39B9 139~ trmi~ t~t vl~rb,3 ~ eomm~nd ?
08F3 6903 1396 b trmiOO I c~ nd 139e ~ n xt d~t~
1399 ;
08FS 3910 1400 t ~puv~h~ 1 ; to tr~n~mit mod-l Wl ~
OeE7 3roe 1402 ld ~.vl~tb OeF9 07 1403 rorc OeFR 3F08 1404 t ~,vl-tb ~ d~t~ ~Qt 140S ~
08FC 41 1406 ld ~, ~h~ 1 08FD 3FOR 1407 st ~,vlfc J eount-r s-t l40e ~
1409 ~ n xt intr.
1~10 ~
OeFF C3 1411 ld h,U~'3 RO~ PRGE NO.36 09~0 E2 1412 ld 1, ~h~ 2 ~ to Tdo 1413 ~
0901 41 1414 ld ~,~1 ~ n-xt intr. 1 bit 141~ ~ tim-1416 ~ 1- . D
1~17 1 0902 2R 1418 trmiO1~ r t 1~19 1420 ~
1421 ~ _ .d r eriv d 1422 ~
0903 3B36 1423 tr~iOO~ ~ t ~op06,3 ; out '~p~ee' 090~ C3 1424 ld h,2h'3 0906 EO 142S ld l,Uh~O ~ to Rd~mymi - 1426 ~
0907 40 1427 ld ~,Zh~0 I n-xt intr.1/2 bit 1428 ~ tim-1429 ; ~ -p 1430 ;
090e 82 1431 b trmiO1 ; to r _w~rp 1432 ;

143~ ;
1436 ;
1437 ~ Rd~mymi routin-143e ;
1439 ;
1440 ;
1441 ; p~rity,count-r el-~r 1442 ~
0909 40 1443 rd~my~ ld ~,th'O
090R 3FOB 1444 ~t ~,p~rity O90C 3F0R 144~ ~t ~,vl-c ; count-r cle~r CP~ TLCS-47 ~SSEhDLER V2 2 P~CE 23 LOC OW LINE SOUROE S r~, ~ ._~T

1447 ~ noxt intr l44e, O90E CS 1449 ld h,Sh'1 O90F E4 14W ld 1,Sh'4 ~ to R

0910 40 14S2 ld a,~h'O ; noxt intr 1/2 b~
t 14S3 I ti~
14~4 ~
14~S I
0911 2~ 14S6 r t 14S7 ~
l4sa ~ "; ~";;

1461 ~ ;
l~C2 ~ Tdo routin-1464 ~
146~ 1 1466 ~ eount r ?
1467 ~
0912 2E3~ 146e tdo emprvl~e,Sh'3 0914 OE 1469 to~tp z~
O91S ~3 1470 b tdoOOO ~ n xt d~ta s~t 0916 2E7~ 1472 CmDr vl~e,~h'7 0918 OE 1473 t--tp 0919 ~e 1474 b tdoOO1 ; parity sat 147~ 1 1476 ~ d~t~ s~t 091~ 3coe 147e ld ~,vl~tb O91C 07 1479 rore O91D 3FOe 14eO st ,vl~tb ; data ~-t e 14e2 ~ eount~r in~
l4e3, O91F 2F1~ 1484 tdoO02~ ~dd vl~e,Sh'l l4e~ ~
14e6 ~ n-xt intr no changc addr~ss l4e7 ~
0921 41 148e ld a,Sh'l ; ncxt intr 1 bit tim-14e9 ;
1490 ;
1491 ; r- ~lp 1492 ;
0922 2~ 1493 r t 1494 ;
149S ~ eount r eual 3 - 1496 ;
0923 3C07 1497 tdoOOO~ ld a,vl~th 092S 3F08 149~ ~t ~,vl~tb ; transmit d~t~ rep l~c~
1499 ;
0927 9F 1~00 b tdoO02 ; to rv-w~r3 ~ 33~43 CP/~ TLC5-47 RSSE~BLER V2.2 PaGE 24 LOC OBJ LlNE SOURCE ~(~
1~01 ~
1502 ~ eountor qu~l 7 1~03 ~
0928 3COC 1~04 tdoOO1~ ld a,p~ritt ogza 3Foe 1~0~ t ~,vlftb ~ p~rity data in 1~06 ~
1~07 ; n xt intr.
1 ~0~ ~
092C C3 1~09 ld h, Sh' 3 092D E4 1~10 ld 1,Sh'4 ~ to Tp lS11 1 092E 41 1~12 ld ~, Sh' 1 ; n-xt intr. 1 bit 1~13 I tima 1~14 I r- ~: p 092F 2a 1516 r t læl I
15æ I Tp routino J
1523 ~ ;
1~24 1 152~ 1 0930 3COD l~Z6 tp~ ld ,lcieot 0932 3e 4 1~27 empr ~-puep 0934 BB 1~28 b tpOOOO
1~29 1 1530 1 lci eount-r qu~l- '-puep' 1~31 1 093~ 3908 1532 t vlftb,O ; n-xt d-ta '1' 1~33 1534 ; to Tlei routin-1~3~ ;
0937 C3 1~36 tpOOO1~ ld h, ~h' 3 0938 E6 1~37 ld 1,Sh'6 ; to Tlei 1~38 ~
0939 40 1~39 ld a,~h'O ~ noxt intr. 1/2 b it 1~40 1 eim-1~41 ~ rr-warp lS42 ~
093a 2a 1543 r t 1~44 1~4~ ;
1546 ~ lei countar not qual '~puep' 1~47 ~
093~ 394e 1~48 tpOOOO~ clr vlftb,3 ; n-xt data '0' 1549 ;
093D B7 1~0 D tpOOOl ; to return 1~5~1;

lS~4 ;

CP/~ TLCS-47 ~SSE~3LER V2 2 P~GE 25 LOC 08J LINE SOURCE S~ltr_~l lS56 ~ Tlci routin-~e 1~9 ;
093E 39~0 1~60 tlcl~ elr puv - h, 1 ~ to rrc-ivu moda 1~61 1~62 ~
1563 ; n xt intr 1~64 ROh P~GE Na 37 09 W C3 1~6~ ld h,Sh'3 0941 E8 lX 6 ld l,Sh'e ~ to Rt~ck 1~67 ;
0942 40 1~68 ld ~,th'O ~ n-xt intr 1/2 ~i t lX 9 I tim-1570 ~
1571 ~ p 1572 ~
0943 2~ lS73 r t 1~7~ ;

lS77 ~ JI~;~;;;;;;;;~;3 ls7e ~
1579 ~
1~80 ~ Rt~ek routin-1~81 ~ l ~582 1 0944 3910 1~84 rt~ek2 -t puv h, 1 ; to tr~nsmit modc 1~8~ ~
0946 39F9 1~86 t-~tp vlfrb,3 0948 ~a l~e7 b rt~ekO ; ~naek' from E~U
1~88 ~
15e9 ~ '-ek' from ECU
1~90 ;
0949 3aF6 lS91 t--tp ~ipO6,3 094a 94 1592 b rtaekl ; lei eount~r 1593 ~ ~qu~l 'spucp' 094C 3948 1~94 clr vl-tb,O ; tr~nsmit d~t~
lS9~ ; ~qu~l 'O' 094E 39~1 1596 clr spuvum,l ; cl-ar 'ornvious 1~97 ; eomm~nd reouires ~n ~n-wor' 1~9e ;
1~99 ; n xt intr 1600 ;
09~0 C3 1601 rtaekZI ld h,Sh'3 09~1 E~ 1602 ld l,Sh'a ; to T~t 1603 ~
09~2 40 1604 ld ,Sh'O ~ n xt intr 1/2 bi t 160~ ~ tim-1606 ;
1607 ; r_ w~rp CP~ TLCS-47 ~SSE~LER VZ 2 P~GE 26 LOC OBJ LlNE SOUROE yl~r~ T
160e ~ `
0953 2~ 1609 r t 1610 ~
09~4 390e 1611 rt-ekl~ e vlftb,O ~ tr-n~mit d~ta 1612 ~ quil '1' 0956 3914 1613 ~ t ~vuvdm~l ~ 1200 bit tim~r on 1614 ~
161S ~ tran mit buf- r r-pl~e-1616 ~
O9S8 3C26 1617 ld ;writ h 095~ 30 1618 xeh ~,h O9SB 3COD 1619 ld ,leieot 1620 ~
095D 3eO1 1621 dd ,~h~l l6æ, O9SF 05 1623 role 0960 383E 1624 nd ,~h'-0962 31 1625 xeh ,l 1626 ~
0963 OC 1627 ld ~,~hl 0964 3F06 162e ~t ~,vl-tl 0966 le 1629 ine 0967 OC 1630 ld ,~hl 096e 3F07 1631 5t ,vl~th ~ k-y d~t~ in 1632 ~
096~ 90 1633 b rt~ek2 1634 ~
163S ~ 'n-ck' rom ECU
1636 ~
096a 3C16 1637 rt-ekO ld ,vlf-e 096D oe 1638 ine 096E 3F16 1639 ~t ~,vlf e ~ vlf rror ~ounter 1640 ~ inc 0970 DS 1641 empr ~,~h'S
0971 B9 1642 b rt~ck3 ; rror not ~qu~l 1643 ~ S'th timcs 0972 394e 1644 elr vlftb,O ; tran~mit data '~' 1645 ~
0974 3954 1646 elr ~puvdm,l ; ~1200 bit timar) bit el-ar 1647 ~
0976 3924 164e -t puvdm,2 ; 10~e tim-r ~it o n 1649 ~
097e 90 16SO b rtack2 ; to rr-w~ro 1652 ; rror not eual 5'th timc~
16~3 ;
0979 390~ 16S4 rtaek31 ~-t vl~tb,O ; ncxt data '1' 16S5 ;
097B 3914 16S6 ~-t ~puvdm,l ; ~nt '1200 bit tim r bit ' 097D 2FFD 16S~ ~dd leieot,th'~
16S9 ~
097F 69S0 1660 b rt-ck2 ~ 16~1 ;

CP/h TLCS-47 ~58EhDLER V2 2 P~GE 27 LOC OEJ LINE SOUROE ~l~lt _~T
RO~ PqGE NC 38 ~
09el 6950 1662 b rt~ck2 ~ to r _~rp 1669 ~ T~t rouitn- ;
~670 ~ ;
1671 ~ -1672 ~ -0983 3950 1673 t-t~ clr puv h,1 ; r-c-iv- mode 1674 ~
0985 C3 167~ ld h,~h~3 0986 EC 1676 ld l,2h'c ; to R~t 1677 ~
0987 45 1678 ld ~,th'5 ~ n-xt intr 11 bit 1679 ~ timr 1680 ~
1681 ~ r--~rp 1682 ~
ogee 2~ 1683 t e4, 1685 ~
1686 ;
16e7 ~ R~t routin-16e8 ;
es 1690 ~
0989 39B9 1691 r~t t-~t vlfrb,3 0983 aP 1692 b r~tOOO ; ~too bit c~nn't f ind 1693 ~
098C 3BF6 1694 t-~tp ~ipO6,3 098E ~E 1695 b r~tOO1 ; out 'O' 1696 ~
098F 3C0D 1697 ld ~,lcieot 0991 08 1698 inc 0992 3FOD 1699 ~t ~,lcicot ; lci counter decre ~--0994 3910 1701 ~-t ~puv~h,1 ; to tr~nsmit moa-- 1702 ;
0996 3914 1703 ~ct ouvdm,1 ; 'lZOO bit timr ' 1704 ~
0998 42 1705 ld ~,~h'2 0999 3FF6 1706 ~t ~,ti~rhn 099E 4C 1707 ld ~,~h'c O99C 3FF5 1708 ~t ~,timrnn O99E 4F 1709 ld ~,~h'f O99F 3FF4 1710 ~t ~,ti~rln 1711 ;
09~1 48 1712 ld ~,~h'e 09~2 3~8C 1713 out ~,~oplc `- 1714 ;

CP/~ TLCS-47 ~SSE~BLER V2 2 PaGE 2e LOC 08J ElNE SOUROE ST~TE~ENT
O9P4 3940 1715 r tO02 clr puv-h,O ; ~bnorm~l modr oga6 3975 1717 clr ~puv~1,3 ~ xt-rn~l intr -n~
bl-ogae 66DF 1719 b rO1111 L720 ~
ogaa 3951 1721 r tOOOI clr puvum,1 1722 ~
ogac 6820 1723 b re tnO ~ ~r~ming crror 172~ ~
O9aE 39E4 1726 r tO01~ t-ntD ~puvdm,2 ~ '10 ~ c bit' on ?
0980 86 1727 b r tO04 1728 ;
1729 ; 'c~ -~d x-cut- bit' on 1730 ~
0981 3934 1731 et ~puvdm,3 1732 ;
O9B3 39~1 1733 - clr ~puvum,1 ; pr-viou- comm~nd nerd d~t~
1734 ~ bit cl-~r 098~ ~4 173~ b r tO02 0986 3940 1737 r~tO04~ clr ~puv-h,O ; ~bnorm~l modr l73a, 1739 J 10 ~ c tim r ~t~rt 098e 46 1-741 ld ~,~h'6 0989 ~Fr6 1742 ~t ~,tinrhn 0988 47 1743 ld ~,~h'7 098C 3FF5 1744 ~t ~,ti~rnn 098E 47 174~ ld ~,Sh'7 098F 3FF4 1746 ~t ~,timrln RO~ P~GE NO 39 ~
O9C1 40 174e ld ~,th'O
O9C2 3aeC 1749 out ~,Xople 1 7~0 O9C4 49 17~1 ld ~,~h'9 09C~ 3aac 17æ out ~,~op1c ; ~t~rt 17~3 ;
O9C7 3954 1754 clr ~puvdm~1 ; 1200 bit timrr ~1 t 17~ ; cl-~r O9C9 66DF 17~6 b r0111L ; rrturn 17~7 ;
17~8 ;
17~9 ;
;

1763 ;
1764 ; r_ ~rp routin- ;
~76~ ; ;
1766 ~

146 l 338043 CP/~ TLC5-47 RSSE~8LER VZ 2 RO~ PaGE NO 40 oaoo 1767 org h'-OO
1768 ~
1769 ~ r _ ~ p 1770 ~
oaoo DO 1771 cmpr ,~h'O
OROI OE 1772 t-~tp 2f OR02 9B 1773 b rw rpO ~ noxt intr l/2 bit 1774 ~ tim-oao3 Dl 177~ cmpr ,~h'l OR04 OE 1776 t--tp ~ -oao~ R4 l m b rw rpl ~ n-xt intr l-bit 1778 ; tim-oao6 D2 1779 cmpr ~,~h'2 oao7 OE 17eO t-~tp ~-OAoe aD 1781 b rw rp2 ~ noxt intr 6 bit 1782 ~ timw oao9 D3 - 1783 cmpr ~,~h'3 OaOR OE 17e4 e--tP ~f OR08 37 178S b rw rp3 ~ ncxt intr 9 bit 17e6 ; tim~
1787 ~ e im-17ee ~ 11 bit e~m r l7es ~
OROC 4F 1790 ld ,~h'~ -OaOD 3F18 1791 t ~,timrho OROF 47 1792 ld ~,~h'7 OalO 3FlR 1793 ~t ~,ti~ ~o Oal2 4C 1794 ld ~,~h'c Oal3 3F19 179~ t ~,timrlo-1796 ~
1797 ~ n-xt w-rp l7se ~
Oal~ 29C4 1799 rw-rp4~ xch hl,w~rpcl 0~17 28C4 lBOO ld hl,w-rpcl leol ~ ~
Oal9 66DF 1802 b rOllll ~ rcturn leo 1 eo4 180~ ~ 1/2 bit timor leo OalB 4F leO7 rw-rpO~ ld ~,~h'~
OalC 3F18 leOe st ~timrho OalE 3FlR 1809 st ~,timrmo OR20 4a 1810 ld ~,~h'~
0a21 3Fl9 1811 ~t ~,timrlo 1812 ~
0a23 9~ 1813 b rw~rp4 1814 ~ -181~ ~ 1 bit tim-r oa24 4F 1817 rw rpl ld ~,~h'~
OR2~ 3Fl~ lBlB ~t ~,timrho CP/~ TLCS-47 ~SSE~BLER V2 Z
P~ OE 30 LOC OBJ LINE SOUROE ~(~1~ _NI
oa27 3Fla _lelg ~t ~,timrmo OA29 44 1820 ld ~,Sh'4 0~2Q 3Fl9 1821 t ~,timrlo leæ ~
0~2C 9~ 1823 b r~rp4 ez~
~e2s ~
le26 ~ 6 bit tim r lBZ7 T
OR2D 4F 182B rw-rp2t ld ~,Sh'~
0~2E 3F13 1829 t ~ti~rho 0~30 43 1830 ld ~,th'b 0~31 3F1~ 1831 ~t ~,ti r~o oa33 4e lB32 ld ~ 'e - oa34 3Fl9 le33 t ~,timrlo le34 ~
OP36 9~ 183~ b rw~rp4 lB36 ~
1837 ~ 9 bit tim r ls3e 1 0a37 4F 1839 _ rp3l ld ~,Sh~
oa38 3F1~ 1840 ~t ~ti~rho oa3a 49 lB41 ld ~,~h'9 oa3a 3Fla le4Z t ~,ti r~o 0~3D 44 le43 ld ~,~h'4 Oa3E 3Fl9 le44 t ~ ti~rlo le4~ ;
ROh P~GE NO 41 Oa40 6al~ le46 b _ rp4 47 ;
le4e nd ~S~t~ ~Y COhPLETE, O P*OGRn ERROR~S) cp~ TLCS-47 assE~sLER V2.2 pRGE 31 sy~soL TasLE
co~aD 0013 co~aH 0015 co~aL 0014 ~ DapToH 0081 *.DaTROL 0080 * DRTRlH 0083 * DaTalL 0082 * DaTa2H o0ss DaTa2L 0084 * DaTa3H 0087 * DaTa3L 0086 ~ DaTa4H 0089 DaTa4L 0088 ~ DRTacT 0200 DCH OOFE DCL 00FC
DC~ OOFD * DISPR 003Z * DISPH 0031 ~ DISPIW 0034 DISPL 0030 ~ DISPLW 0033 FRa~E 0053 INCOTH 008C
INCOTL oosa INCOT~ 0088 * IOVFl 0602 ~ KEST oo æ
KESTOH 0043 KESTOL 004Z * KESTlH 004S * KESTlL 0044 * KEST2H 0047 * KEST2L 0046 * KEST3H 0049 ~ KEST3L 0048 ~ KEST4H 0048 ~ KEST4L 004R ~ KEsTsH 004D ~ KEsTsL 004C
* KEST8H 0021 ~ KEsTsL ooe o ~ KEYND 0029 ~ KEYNN 002a * KEYOD oozs * KEYON 002C ~ KEYS OlOO ~ KEYS8 02~0 * KEYSC 000E * KEYT 0300 * KEyTa o0cs Lc I COT OOOD
* LDaTLl 0037 * LDaTLz 0038 ~ LDaT~l 0035 ~ LDRT~2 0036 LDISP 0800 * LECOTH OOsF ~ LECOTL 0osD ~ LECOT~ o0sE
LIOVF2 ODOO ~ L~aIN 03EO ~ LRE~O OEOO ~ LTasLE oo0o LVLFEX 0coo ~ OVERZR 007Z * OVER2H oa71 * OVER2L 0o70 OVERRl 0012 ~ OVERHl 0011 OVERLl 0010 paRITT 00oc PRRITY 0008 R0 0632 R00000 06C2 ROOOOl 06Cl RO1000 06cs ~ ROl100 06CE ROll10 06ER ROllll 06DF
RCR 0719 RC~000 0734 Rcaool 073a RCR002 0732 RcFoaZ 074D RCFOOS 0776 RCf006 074E RCF100 077c RCFl10 07BS RCFlll 07CF RCF120 07se RCF121 07RE
RCF122 07as RCP 07D4 RCPOOO 07Es RCP003 07E3 RCP004 07E~ RCP100 07El ~ RcSTal 0838 RcsTas 0838 RCSTN 07FA RCSTNO 0820 RCSTNl 0817 * RCSTNZ oeos RCSTN3 0813 RCSTN6 0803 RCSTN7 0831 RDR~r o9o9 RDRST 0885 RDasT 1 osas RDAST3 osa4 RDRST4 0sRE
RDasT3 0888 RDasT6 ossc RDD oe4 1 RDDOOO 0858 RDDOOl 0868 RDD002 oss7 RDP oe71 RDPOOO os7c RDPOOl 0876 REaDc 0028 RERDN 0027 ~ RE~DO 0060 RE~D 1 0061 * RE~D2 0062 * RE~D3 0063 ~ RE~D4 0064 RE~Ds 0065 ~ RE~D6 0066 ~ RE~D7 0067 * RE~oa 006a RE~OH 0069 * RE~OL 006e RKCE o0so R~ I 06FC
R~ I 000 070F R~ I 001 0709 R~ I 002 070E R~ I 003 071S
RNH 0068 ~ RNL 006D ~ RN~ 006C RST 0989 RSTOOO osaa RSTOOl 0saE RST002 osa4 RST004 0986 RSTD 0834 RTacK 0944 RTacKo 0968 RTRCK 1 0954 RTRCK2 09so RTaCK3 0979 RWaRP0 0Rls RwaRPl OR24 RW~RPZ ORZD RW~RP3 oa37 RwaRp4 oals ~ RWRPCH 00CR
RWRPCL 00cs ~ RWRPC~ 00C9 SERVRC OOOF spucp 0024 SPUTT 0018 SPUVD~ 0004 SPUVSH 0ooo SPUVSL o0os spuvu~ 0001 spw OOFF sPws 00C7 T0 0sc2 T00000 osD4 TD 1 0sEs TDacK os7F TD0 0912 TDOOOO 0923 TDOOOl 0928 TD0002 0slF ~ TI~R2H 00FR
TI~R2L ooFs ~ TI~R2~ ooFs TI~RHN OOF6 T1~RHO 0018 TI~RLN OOF4 TI~RLO OOl9 TI~R~N OOF~ TI~R~a 001R
TLC~ os3E TP 0930 TP0000 0938 TP0001 0937 TRa 07EE TRaQoo 07F7 TRROOl 07FS TR~I 0eFl TR~IOO 0903 TR~IOl 0902 TST 0983 VL0040 06R3 VLOOSO 0698 VL0060 0689 VLfOOl 063S VLF002 0647 CP/~ TLCS-47 ~SSE~LER v2.2 P~GE 32 SYP1130L Tal~LE
VLF011 062~ VLF100 061E VLF200 062D VLF300 06aD
VLFC 000~ VLFEC 0016 VLFR3 0009 VLFTa 0008 VLFTH 0007 YLFTL 0006 ~ VLFXa 00~2 ~ VLFX~ 00~1 VLFXL 00~0 WARPCL OOC4 ~ WaRPC~ OOC~ WRITEH 0026 WRITEN 002~
DEFINED 233 USER SY~8CL(S) .

CP/~ TLCS-47 ASSE~6LER VZ.2 P~GE

LOC OBJ LINE SOUROE STATE~ENT

2 ~ 7.19~3. ;
3 ; lvlf~ ~m V1.0 4 ~ (T~P4740P) ~ ~ ;
6 ; vl~ communic-tion routin-7 ~ ;
8 ~ ;

~noli~t ~ t 304 ;
30~ ;
~a~ PAGE Na.48 OCOO 306 org h'cOO
307 ~
308 ~ di~abl- ?
309 ;
OC00 39F~ 310 vlf-x~ t-xtp ~puv~1,3 OC02 6C42 311 b vlfxOO ; l'-t in~r. dis~bl .

313 ; pu~h r-gi~t r 314 ;
0C04 3F~2 315 ~t ~,vl-x~
OC06 29~0 316 xch hl,vl~xl ; Du~h r~gi~tQr 317 ;
318 ; cl--r xt-rn~l count-r OCOB 40 320 ld ,th'O
0C09 3A8C 321 out ~Xcplc OC03 3804 322 ~-t %oP04,0 OCOD 3344 323 clr XooO4~0 ; ~v-nt tim-r ~tart 324 ;
32~ ; tim-r ~t-rt 326 ~
OCOF 3CF6 327 ld a,timrhn OC11 3F8C 328 st a,incoth OC13 3CF~ 329 ld a,timrmn OC1~ 3FB8 330 ~t ~,incotm OC17 3CF4 331 ld a,timrln OCl9 3FeA 332 ~t ,incotl 333 ~
OC1D 4F 334 ld ,th'-OClC 3FF6 33~ st a,timrhn 0ClE 3FF~ 336 ~t a,timrmn CP/~ TLCS-47 ~SSE~8LER VZ Z
PaOE Z

LOC 08J LINESOURCE ~(b~
oczo 4a 337 ld ~h~a OCZl 3FF4 33e ~t a, e imrlr 0C23 44 339 ld ~,~h' 4 OC24 3asc 340 out a,Xoplc ~ timor ~t~rt 341 ~ 2 bit time 342 ~ r-ming rror ?
343 ~
OCZ6 3sFl 344 t- tD ~ouvum,3 oczs 6C43 345 b vlfxOl ~ fr~ming orror 346 ~ i 347 ~ mode ch~ngc from ~bnormal to norm-l 348 ~
ocza 3900 349 ~ot xpuv~h,O ; to norm~l mode 3~0 ~
3S~ ; tran~mit ?
3 æ ~
oczc 3sDo 3S3 t-~tp ~puv~h~l OCZE 6C57 3~4 b vlfx02 ; tran~mit mode 3~ ~
3~6 ; next routine 3~7 ~
OC30 40 3~e ld ~,~h'O
OC31 3FC4 359 ~t a~w~rocl OC33 41 360 ld ~,~h'l OC34 3FC~ 361 ~t ~,w~rpcm ~ ~ddrcss h'010 362 ~
~ n xt tim-r ~ettinq 364 ~
OC36 4F 365 ld ,~h'f OC37 3F13 366 ~t a,timrho oc3s 3FlP 367 ~t ~,timrmo oc3s 44 368 ld ~,Zh'4 OC3C 3Fls 369 ~t a,timrlo 370 ~
371 ~ pop r gi~t r 372 ;
OC3 3C~2 373 vl-x03. ld ~,vlfxa RO~ P~GE NO 49 OC40 29~0 374 xch hl~vlfxl 375 ~
37s ; return 377 ~
OC4Z 2~ 378 vl~xOO~ r-ti 379 ~
3eo ;
381 ; framing ~rror 3e2 ;
OC43 oo 383 vlfxOlt noo OC44 4F 3e4 ld ~,~h'f OC4~ 3Fle 3e~ ~t ~,~putt 386 ~
387 ; ld a,~h~f 3ee ; ~t ~,timrhn ~.

CP~ TLCS-47 ~SSE~LER VZ.2 pAGE 3 LOC 03J LINE SOURCE ~1~(~. ._N I
389 ~ ld ,~h'7 390 ~ ~t ~, e i~r~n 391 1 ld a,th'e 392 1 st ~timrln 393 ;
394 ; ld a,~h'4 395 ; out ~,%ople ; t-im~r ~t~rt 11 ~i 396 ; tim-OC47 3C8C 397 ld ~,ineoth OC49 3FlD 39e ~t ~,tlmrho OC4B 3C8E 399 ld a,incoem OC4D 3FlA 400 ~t a,timr~o OC4F 3C8A 401 ld ~,ineotl OC 1 3Fl9 402 st a,tlmrlo OC 3 3836 404 ~t ~opO6,3 40~ 1 OC5~ 6C3E 406 b vlfx03 W7;

409 ; tr~n mit mod-410 ~
OCS7 3B76 411 vl~x02~ clr ~opO6,3 ; out ~mark' OC 9 3C06 413 ld a,vlftl OC58 3F08 414 t a,vlftb ; tran~mit buff-r 41~ ; el--r OC5D 4F 416 ld ,~h'f OC5E 3F1~ 417 ~t ~,timrho OC60 3FlA 418 st ~,tinr~o OC6Z 4a 419 ld a,~h'a OC63 3F19 420 ~t ~,ti~rlo ; tim-r s-t 421 ;
OC65 42 422 ld ~,~h'2 OC66 3FC5 423 st a,w~rpem OC68 4A 424 ld a,~h'~
OC69 3FC4 425 t a,w~rpcl ; n-xt routin 426 ;
OC6~ 6C3E 427 b vlfx03 ; to rrturn 429 ;
430 nd ~SSE~LY CO~PLETE, O PR08AA:I ERROR(S~

TLCS-47 assE~BLER V2.2 paGE 4 sy~soL TaBLE
* Co~aD 0013 * co~aH OOlS * co~aL 0014 * DaTaoH 0081 * DaTaoL ooeo * DaTaIH 0083 * DaTalL ooe2 * DaTazH ooss * DaTa2L 0084 * DaT~3H ooe7 * DaTa3L 0086 * DaTa4H 0089 * DaTa4L 0088 * DaTacT 0200 * DCH OOFE ~ DCL OOFC
* DCN OOFD * DISPa 0032 * DISPH 0031 * DrspIw 0034 * DISPL 0030 * DlSPLW 0033 * FLASH 03S0 INCOTH 008C
INCOTL ooea INCOT~ ooes * KEST 0022 * KESTOH 0043 * KESTOL 0042 * KESTlH 004S * KESTlL 0044 * KEST2H 0047 * KEST2L 0046 * KEST3H 0049 * KEST3L 004e * KEST4H 0048 * KEST4L 004a * KEST~H 004D * KEST~L 004C ~ KEsTsH 0021 KESTBL 0020 * KEYND 0029 * KEYNN 002a * KEYOD 0028 * KEYON 002C * KEYS OlOO * KEyss 02SO * KEYSC OOOE
* KEYT 0300 * KEYTB oocs * LCICOT OOOD * LDasLl 0038 * LDasL2 003C * LDas~l 0039 * LDas~2 003a * LDaTLl 0037 * LDaTL2 003e * LDaT~l 003S * LDaT~z 0036 * LDISP OBOO
* LECOTH OoeF * LECOTL ooeD * LECOT~ ooeE * LEDD 0310 * LIOVFl 0600 * LIOVF2 ODOO * L~aIN 03EO * LRE~O OEOO
* LTasLE oooo * LVLFEX ocoo ~ ovER2a 0072 * OVERZH 0071 ~ OVER2L oo7o * w ERal 0012 * OVERHl 0011 ~ OVERLl OOlO
* paRITT oooc * paRITy 0008 * READC 0025 * READN 0027 * RE~DO 0060 * RE~Dl 0061 * RE~D2 0062 * RE~D3 0063 RE~D4 0064 * RE~DS 006S * RE~D6 0066 * RE~D7 0067 * RE~Oa- 006a * RE~OH 0069 * RE~OL 006e * RKCE ooso * RNH 006B * RNL 006D * RN~ 006C * RWRPCH OOCA
* RWRPCL ooca * RWRPCY ooc9 * SERVRC OOOF * spucp OOZ4 * SPUSH 0003 * SPUSK OOZ3 * SPUSL 0002 SPUTT 0018 * SP W D~ 0004 SPUVSH oooo SPUVSL ooos spuvu~ OOOl * spw OOFF * sPws ooc7 * TI~R2H ooFa ~ TI~RZL ooFs * TI~RZ~ ooFs TI~RHN OOF6 TI~RHO OOlB TI~RLN OOF4 TI~RLO OOl9 TI~R~N OOFS TI~R~O oola * VLFC oooa * VLFEC 0016 ~ VLFEX ocoo * VLFR8 ooo9 VLFTB oooe * VLFTH ooo7 VLFTL 0006 VLFXOO OC42 VLFXOl OC43 VLFX oe ocs7 VLFX03 OC3E vLfxa OOS2 * VLFXH OOSl VLFXL ooso waRpcL OOC4 waRpc~ oocs * WRITEH 0026 * WRITEN 002S
DEFINED 137 USER sy~soL~

1 ~8~43 CP~h TLC5-47 ~SSE~BLER V2.Z
P~GE

LOC OBJ LlNE SOURCE ~I~Tt~ T
1 ~ ;
2 ~ 7.1983. ;
3 ~ lr mo.-~m V1.0 4 1 (T~P4740P) 6 ~ r-~ot-. routlr~
8 ~ ;
9;

~noli~t ~ t 2~8 ;
RC~ P~GE NO.~6 OEOO 2~9 org h'-OO
260 ~
261 ;
262 ~ r ffC - D -263 ~
OEOO 3F6~ 264 ~t ~.r mo-OE02 44 26~ ld ,~lOlOOb OE03 13 266 x~ch ,-ir OE04 366F 267 iclr il,lOllllb OE06 2968 268 xch hl,r-mol 269 ~
270 ;~; to stop tim r2 271 ~
OE08 40 272 ld ~,tO
OE09 3~8D 273 out ~,~opld 274 ~;~; ch ck N1 27~ ;
OEOB 3C62 276 ld ~,rnh OEOD D3 277 cmpr ,~h'3 OEOE OE 278 t-~tp zf OEOF 6E~C 279 b intlOO

OEll D2 281 cmpr ,~2 0E12 OE 2e2 tc~tp ~f OE13 ~4 253 b int200 284 ;
26~ ;;; N1-1 or O
OE14 41 286 ld ~,tl OE1~ 3F62 Z87 ~e ~rnh 288 ;
289 ;~ ~eting tim r2 on 4.~m~
Z90 ~
OE17 4F 291 ld ~,th'f CP/h TLCS-47 ~SSEh3LER V2 Z
paGE 2 LOC 08J LINE SOURCE ~~ NI
OEla 3FFP 292 ~t ~timr2h OE1~ 4E 293 ld ~,~h'n OE18 3FF9 294 ~t ~,timr2m OElD 3FFe 29~ t ~,ti~r21 296 ~
OElF 4a 297 ld ~,~B
OE20 3aaD 29e out ~,Sopld 6~ 299 b r-t2 3W ;
301 ~ N1-2 302 ~
0E24 3CFe 303 int200 ld ~,timr21 ; timrr ch-ck OE26 3802 304 dd ~,~h'2 OE2a 05 30~ role OE29 04 306 t--tp cr OE2~ 3E 307 b int210 ~JumD on c~rry '1' 30e ~
309 ;~ ~-tting tim r2 310 ~
OE28 3806 311 in2000~ ~rt ~opO6,0 OE2D 4E 313 ld ~,~h'-OE F 3FFPi 314 ~t ~,ti~r2h OE30 47 31~ ld ~,~h'7 OE31 3FF9 316 ~t ~,timr2n OE33 4C 317 ld ~,~h'c OE34 3FFe 31e .e ~, ti~r21 OE36 4a 320 ld ,~a OE37 3PaD 321 out ~,~opld ~t~rt 322 ~
OE39 40 323 ld ~,~0 OE3~ 3F68 324 ~t ~,rnh ;N1~0 32~ ~
OE3C 6~s~ 326 b r t2 327 ~
32e ;; ~t-rt d~t- r-c-iv-329 ~
OE3E 3CF9 330 int210~ ld ~,timr2m ROh P~GE NO 57 OE40 DF 331 cmpr ~,th~f OE41 6E28 332 b in200a 333 ;
OE43 43 334 ld ,t3 OE44 3F68 33~ ~t ~,rnh ;N1~3 337 ; r m cl-~r 33a ;
OE46 C6 339 ld h,~6 OE47 EO 340 ld 1,~0 oE4a 11 342 mov l,~
343 ;

~ 33ao43 .
CP/~ TLCS-47 ASSE~8LER V2 Z

LOC OBJ LINE SOURCE ~l~ftnJ~T
OE49 OF 344 int211l zt ~, Qhl OE 4A 18 34~ lnc OE4a 389e 346 c~pr l,S8 OE4D OE 347 t-~tp zS
OE4E 90 348 h int212 OE4F eg 349 b int211 350 ~
351 ; ~ctting ti~ r2 3æ ~
OE W 3FF8 353 int212r t ~,ti~r21 OE52 4F 354 ld a, Sh' f OE53 3FF9 355 t ~,ti~r2m Oe55 3FF~ 356 t ~,tirr2h - 357 ~
OE57 4e 358 ld ~,t8 OE5e 3A8D 359 out ~,Sopld 360 ~
OE5A 6EE7 361 b r t2 362 ~
~ 363 ~; d-t~ r-c-iv-364 ~3 OE5C 3C6C 365 intlOOI ld ~,rnm OE~E 31 366 ~ch ~,l ;1~ - NZ
367 ;
OE5F C6 36e ld h,S6 369 ~
OE60 3CFe 370 ld ~,timr21 371 ~
OE62 3809 37Z ~dd ~,t9 OE64 6EB7 374 b intl30 ~c-rry 'O' 37~ ~
OE66 3C6D 376 intllO~ ld ~,rnl ~(000 N3 OE6e DO 377 cmpr ~,SO ;N3~0 ?
OE69 OE 378 tc~tp z~
OE6A ae 379 b int~21 380 ~
OE6B Dl 381 cmor ~,~1 ;N3-1 ?
OE6C OE 382 e -tp OE6D 3E 383 b int122 384 ~
OE6E D2 385 cmpr ~,~2 ;N3 ~ ?
OE6F OE 386 t-~tp z~
OE70 6E83 387 o int123 38e ~
3e9 ; N3-3 I J"12 OE72 OC 390 ld ~, ~hl 0E73 3e21 391 or ~,tl OE75 OF 392 ~t ~,~hl OE76 6E87 393 b int130 394 ~
OE7e OC 395 intl21l ld ~, Qh 1 OE79 3e28 396 or ~,S~
OE78 OF 397 ~t ~, Qhl OE7C 6E87 39e b intl30 - 157 l 33804~

CP~ TLCS-47 ASSE~LER V2 2 LOC ODJ LINE SOURCE S~ATE~NT
__ 399 ~
OE7E OC 400 intl2Z~ ld ~,Ohl OE7F 3824 401 or ,~4 RO~ PaGE NO ~8 ~
OE81 OF WZ ut ,~hl OE82 87 403 b int130 W 4 ~
OE83 OC 40~ intlZ3~ ld ,Ohl OEe4 38 Z W 6 or ~,~Z
OE86 OF W 7 t ~,Ohl 40e OE87 3C6D W9 int130 ld ,rnl OE89 3801 410 ~dd ~,fl OE8D 3F6D 411 ~t ~,r~l OE8D D4 413 empr ~ t4 OE8E 9B 414 b intl40 JJump on N3~4 41~ ;
OE8F 40 416 ld ,~0 OE90 3F6D 417 ~t ~,rnl ; N3< 0 4~8 ~
OE92 3C6C 419 ld ,rnn OE94 3801 420 ~dd ~,tl~ NZI
OE96 3F6C 4Zl ~t ,rnm 422 ~
OE98 D8 423 empr ~,~8 OE99 OE 424 t-~tp zf OE9a A8 42~ b intl~O ~JUmp NZ-8 427 ; ~-tting tim rZ
4Ze ;
OE9D 4F 429 intl40 ld ~fh'f OE9C 3FFa 430 ~t ~tirr2h OE9E 3FF9 431 ~t ~,timr2m oEao 40 432 ld ~,fO
OEal 3FF8 433 t ~,timr21 -434 ;
OEA3 4e 43~ ld ,,ze OEa4 3AeD 436 out ~,~oDld OEA6 6EE7 437 b r tZ
438 ;
439 ;;; d~t~ eh ek ~ convurt 4W ;; ch-ek cod- w~ compl-t- or not 441 ~
oEAe EO 442 intl~O~ ld l,tO
OEA9 OC 443 ld ~,Ohl 444 ;
OEAa Dl 44~ cmpr OEA3 6EE0 446 b intl60 447 ~
0ERD E3 44e ld l,f3 449 ;
OEAE OC 4~0 ld ~,Qhl 1 33804~

CP/h TLCS-47 ~SSE~9LER VZ 2 P~GE 5 LOC 0~ LINE SOURCE SlAIt~_iT
4~1 1 OEAF DD 4~2 cmpr ~.Sh'd OE30 6EE0 453 b int~60 ~r c-iv d d~t~ w~- rror ~54 1 45~ ~ ch ck d~t- w~s compl-t- or not OE32 4F 4 7 ld ~,Sh'f ~8 ~
OF~ E7 459 ld 1,S7 ~60 1 OE94 lF 461 ~or ~,Qhl OB5 E5 463 ld l,S~ -46~ ~
OE36 16 465 cmpr ~,Qhl OE37 FFo 466 b intl60 ~d~t~ w~s not compl-t~

468 ; d~t~ conv-r~
469 ~
OE29 OC 470 ld ~,Qhl OE3~ DO 472 cmpr ~,S0 OE35 OE 473 t- tp ~f 0EBC 6EC2 474 b intl71 475 ~
OE3E 4C 476 ld ~,Sh'c OEDF 3FFD 477 st ~,dcm ~d~t~ countcr sstting ROh PAGE NO 59 ~
OEC1 85 478 b intl72 OEC2 4D 480 intl711 ld ~,Sh'd OEC3 3FFD 481 st ~,dcm ;d~ta countsrs-tting 482 ~
OEC5 19 483 int172~ d c l ;l~ - S4 484 ;
OEC6 OC 485 ld ~,Qhl - 486 ~

OEC7 3FFC 487 st ~,dcl ;d~t~ countcr ~ctting 488 ~
OEC9 4F 489 ld , Sh' f OEC~ 3FFE 4gO st ~,dch ; d~t~ count-r s-tting 491 ~
492 ~;
OECC 33 493 ldl 4 Qdc OECD 31 494 xch ~,l 49~ ;
0ECE 32 496 ldh ~,Odc~
OECF 30 497 ~ch ~,h OEDO 2250 499 c~ll k~y-b ~00 ~
0ED2 3930 ~01 s-t souvsh,3 ; rcmotc fl~g on 502 ~

CP/~ TLCS-47 RSSE~BLER V2 Z
PqGE 6 LOC 023 LINE SOUROE ~l~lt~_ W 3 ~ ~ret ing tim r2 0 0 4 4F S04 ld ,~h'~
OED~ 3FFR SOS ~t ,h~
OED7 43 S06 ld ,~h~3 OE D8 3FF5 S07 t ~h~9 OEDR 40 ~oe ld ,rh'O
OEDD 3FFe SO9 ~t ~,h~ e ~10;
OEDD 48 511 ld , ~e OEDE 3RBD SSZ out ~Sopld ~13 1 S14 ~ N~--O
SlS ~
OEEO 40 S16 int160 ld ~,~0 OEE1 3F63 ~17 t ~,rnh OE E3 3F6C Sle ~t ~,rn~
OEE~ 3F6D S19 ~t ,rnl ~20 ~
5Z1 ~ r turn routinc ~æ T
OE E7 2968 S23 r t2s xch hl,r~mol OEE9 47 524 ld ~,~alllb OEER 36~F S2S di~lr il,lOllllb OEEC 13 S26 xch ~,-ir OEED 3c6a S27 ld ~,rcmo~
sze l ~
O~EF 3846 SZ9 clr ~opO6,0 ~30 1 OEF1 Z3 S31 r ti S32 ;s S33 ;
~34 ;
S3~ ~
S36 nd RSSE~6LY CO~PLETE, O PROGRR~ ERROR(S) /~ TLCS-47 ~SSE~LER V2.2 PaGE 7 sy~soL Tp~sLE
CO~qD 0013 ~ CO~fC 0015 ~ CO~GR 0014 ~ DaTACT 0200 DCH OOfE DCL OOfC DC~ OOfD ~ DISPq 0032 DISPH 0031 ~ DISPIW 0034 ~ DISPL 0030 ~ DISPLW 0033 INZOOO oE2s ~ INCOTH 0038 * INCOTL 0039 ~ INCOT~ 003A
I NT100 OESC } I NTl10 OE66 I NT 121 oE7s I NT122 OE7E
I NT123 oEa3 I NT130 OEB7 I NT140 oEss I NTlSO OE~e INT210 Of3E INT211 oE4s INT212 OE w ~ KEST 0043 KESTOH 0023 } KESTOL 0022 ~ KEST 1 H 002S } KESTlL 0024 KEST2H 0027 * KEST2L 0026 ~ KEST3H 0029 ~ KEST3L 0028 KEST4H 0029 } KEST4L 002A ~ KESTBH 0041 } KESTBL 0040 KfYND 002C * KEYNN 002D ~ KfYOD 002E * KEYON 002F
KEYS OlOO KEysa 02SO * KEYSC OOOE ~ KEyTa OOC3 LCICOT OOOD ~ LDATLl 0037 } LDATLZ 003a * WAT~l 003S
LDaT~2 0036 * w I SP 0800 ~ LECOTH 003E ~ LECOTL 003C
LEC~T~ 003D } LIOVFl 0600 ~ LIOVfZ oDao ~ L~AIN 03EO
LT~8LE ooo0 ~ LVLFEX oc0o ~ OVER~l 0012 ~ OVERHl OOll OVERLl OOlO } PAR~TT oooc * PARITY 0008 ~ RE~DO 0060 RE~D 1 0061 ~ RE~D2 006Z } RE~D3 0063 ~ RE~D4 0064 RE~DS 006S ~ RE~D6 0066 ~ RE~D7 0067 RE~O~ 006A
RE~OH 0069 RE~OL 006e RETZ OEE7 ~ RKCE ooso RNH 0068 RNL 006D RN~ 006C ~ RWRPCH
RWRPCL ooca ~ RWRPC~ 00C9 ~ SERVRC OOOf ~ spucp 0821 SPUSH 0003 ~ SPUSK 0020 ~ spusL 0002 ~ SPUVD~ 0004 SPUVSH oooo ~ spuvsL 0005 ~ spuvu~ 0001 * SP~ OOfF
sPws ooc7 TI~R2H oofa TI~R2L oofs TI~RZ~ ooFs TI~RHN OOF6 } TI~RHO 0018 ~ TI~RLN OOF4 * TI~RLO 0019 TI~R~N OOF~ * TI~R~O OOl~ ~ VDAT~H 0016 ~ VDaT~L 0017 VLFC oooa ~ VLFEC 0016 } VLFR8 0009 } VLFT8 0008 VLFTH 0007 ~ VLFTL 0006 ~ VLFXa 0052 ~ VLFXH OOS
VLfXL 0050 } WARPCL OOC4 ~ WARPCY OOC5 DEFINfD 123 USER sy~soL(s) 161 1 3381~4~
CP/h TLCS-47 ASSE~8LER v2 2 PqGE

LOC 08J LINE SOURCE ~~ T
l; . : ;
2 ; 7 19~3 3 ; ubroutin- V1 O
4 ~ ~ThP4740P) ~; ;
6 ~ ;
7 ~ ;
8 ;

noli~t li-t ROh PaGE NO
0050 290 org h'O50 291 ~
0050 3C17 292 rkcel ld ,~pu~r 005Z ~F 293 cmpr ~,~h' r 0053 98 294 b rkc-~

0054 40 296 ld ~, ~h' O
0053 3F17 297 t ~,-ou~ -0057 ~8 29e b rkc-4 ; to return 299 ~
0058 3CZ3 300 rkc-5 lc ~,~pu~k 005~ 3E24 301 cmpr ~,~pucp 005C ~C 302 b rkc-O ; br~nch on - 303 ; ~pu~k<)soucD
005D 394F 304 clr ~-rvrc,O ; cl-~r servic- rec u-~t 30~ 1 005F 3942 306 clr pu-l,O ; new ch~r~cter ava i l~bl--307 ;
0061 4F 308 ld ~, th' -006Z 3F42 309 ~t ,k--tOl 0064 3F43 310 ~t ~,k-~t0h ; no h-y~troke 311 ;
312 ; ~DU~ k, ~pUCp cl-~r 313 ;
0066 40 314 ld ~, ~h' 0 0067 3F23 31~ ~t ~,~pu-k 0069 3F24 316 ~t ~, ~pUCD
317 ;
318 ~ r~turn 0068 2~ 320 rkcr4 r-t 321 ;
322 ;
~23 ; bu~-cr CP/h TLCS-47 ~SSE~8LER V2 2 PoGE 2 LOC OBJ LINE SOUROE
324 ~
006C 3CZ4 32~ rkc-O ld ~,spucp 006E oe 326 inc 006F 3FOE 327 t ~,k ysc 32e ~
0071 3COE 329 rkc~ll ld ~,k-y~c 0073 0~ 330 role 0074 3e3E 331 ~nc ~,SlllOb 332 ~
0076 31 333 xch ,1 0077 C4 334 ld h,~h'4 33~ ~
007e OC 336 rkc-25 ld ,Ohl 337 ~
0079 38eE 338 ~dd l,~h'~ ; 1< 1-2 339 ~
0078 OF 340 st ,Ohl 007C 3883 342 ~dd 1,~h'3 ; 1<- 1~3 007E OC 344 ld ~,Ohl 34~ ~
007F 3eeE 346 rkc-3~ ~dd l,fh'- ; 1< 1-2 R5~ P~GE NO 2 ~
ooel OF 34e ~t ~,~hl 349 ~
ooe2 3ee3 3~0 ~dd l,~h'3 3Sl ~
0084 389C 352 cmpr l,~h'c ; buff-r bottom ?
OOe6 607e 3~3 b rkc-2 3~4 ;
ooee 2FFE 3~ ~dd k - y~c~ Sh' f ; k - ysc < kQysc - l 3~6 ~
ooeo ZElE 3~7 cmpr k ysc, ~h'l ooec 6071 3~8 b rkc-l 3~9 ;
360 ; ~pusk~- ( ~pu-k--pucp 361 ~
008E 04 362 t--tp cf ; cf <
363 ;
OOeF C2 364 ld h,~h'2 0090 E3 36~ ld 1,~h'3 ; sDusk - m( h 1 ) 366 ;
0091 3C24 367 1~ pucp 36e ;
0093 14 369 ~ubrc ~,Qhl ; ~pu~k - spucp 370 ;
0094 OF 371 ~t ,Ohl 372 ;
009~ 40 373 ld ~,~h'O
0096 3F24 374 st ~,~pucp ; soucp ( 0 37~ ~

` -CP/~ TLCS-47 ~SSE~8LER V2 2 LOC 08~ LINE SOURCE ~l~lt~_~T
0098 6068 376 b rkc-4 ; t~ r-turn RO~ POGE NO
0100 3eo org h'100 - 0100 4F 382 k y~ ld ~,th'~
0101 3F OE 3a3 ~t ~,k-y~c 0103 3F29 384 ~t ~h-ynd 38~ 1 010~ EO 386 ld l,~h'O
0106 4E 387 ld ~,Zh'-388 ~
0107 30o~ 389 k-y001 out ,%epO~ I
390 ;
0109 Z300 391 c~ll k-yt ~ eim-r OlOB 30 393 ~ch ~,h 394 ~
OlOC 3027 39~ in ~iD07~ ;
396 ~ -~
OlOE DF 397 cmpr ~,Sh'~ ;
OlOF OE 398 e r~tp 2 0110 98 399 b k yO02 4ao ~
0111 18 Wl inc 0112 3F29 - W2 ~t ~,k-ynd 0114 3COE 403 ld ~,k-y-c 0116 3FZ~ 404 ~t ~,k-ynn W~ ~
0118 2FlE 406 k-yO02~ ~dd k-y~c,~l ;
011~ ZE3E 407 cmpr k-y~c,~h'3 01lC 82 408 b k yO03 409 ~
OllD 2CF5 410 out ~h'~,%opO5 OllF 3874 411 clr XopO4,3 41Z ~ ~
OlZl Z300 413 c-ll k-yt 414 ;
OlZ3 3~27 41~ in XipO7,~ ;
OlZ~ 3~34 416 ~-t XopO4,3 417 ;
0127 DF 418 omor ,~h'~ ;
OlZ8 OE 419 t--tD z- ;
0129 36 420 b kryO04 421 ;
01Z0 18 42Z inc OlZ8 3FZ9 4Z3 ~t ~krynd OlZD 3rOE 424 ld ~,k-y-c OlZF 3F20 42~ ~t ~,k~ynn 0131 86 426 b k-yO04 427 ~

CP/~ TLCS-47 PSSE~BLER V2 2 P~GE 4 LOC 08J LINE SW ROE 5Jul~,~
0132 30 428 k yO03~ xch ~,h 0133 OS 429 rolc 0134 87 430 b k yOOL
013S 87 431 b k yOO1 432 ~
0136 30 433 k-yO04~ XCh ~,h 0137 3C29 434 ld ~k ynd 43S ;
0139 DF 436 cmpr , ~h~
013~ OE 437 t-ntp Z~ ~
0138 617D 438 b k-yOOS ~ k-y r-l-~-d ~39 013D 3891 440 cmDr l, ~h~l 013F OE 441 e - .tp 2 RO~ P~GE NO S
0140 82 442 ~ k yO20 0141 B3 443 b k-yO06 444 ~
0142 3 e9 44S k-yO20 ld ~,k-ynd 446 ~
0144 DE 447 cmpr ~,~h'-014S OE 448 t-~tp 2~
0146 91 449 b k yO21 4SO ~
0147 DD 4Sl cmpr ,~h~d 014e OE 4S2 t--tp Z~
0149 91 4S3 b k yOZ1 4S4 ~
014~ D8 4SS cmpr ,2h'b 0148 OE 4S6 t-~tp 2~
014C 91 4S7 b k-yO21 4S8 ;
014D D7 4S9 cmpr ~,~h'7 014E OE 460 t-~tp 2~
014F 91 461 b kcyO21 0150 83 462 b k yO06 ~63 ~
OlS1 3C2B 464 k-yO21 ld ~,k yod OlS3 3E29 46~ cmor ~,k-ynd OlSS ~8 466 b k yO07 467 ~
OlS6 3C2C 468 ld ~,k-yon OlS8 3E2~ 469 cmpr ~,k-ynn Ol spJ ~e 470 b k yO07 471 ;
01S8 39E0 472 tfftD ~ouv-h,2 OlSD B8 473 b k-yO22 474 ;
47~ ;
OlSE 398S 476 k-yO30 tC~t ~vuv~l O
0160 B2 477 b k-yOlO
478 ;
479 ;

CP~ TLCS-47 ~SSE~BLER væ 2 PaGE

LOC O~J LINE SOURCE STaTE~ENT
0161 Z2Q0 480 o~ll d~t ct 481 ~
0163 Z2~0 48Z c~ll k y-b ~83 484 ~
016~ 394~ 48 clr ~puv~l,O
0167 ~a 486 b k~yOOe 487 ~
0~68 390~ 488 koyO07~ ~ e puv-l,O
489 ~
016A 3C29 490 k~yOOes ld ~,k~ynd 016C 3F23 491 ~t ~,koyod 016E 3c2a 492 ld ~koynn ~ -0170 3FZC 493 ~t ~,k~yon 49~ ~
0172 za 496 k-yO10 r t ~r-eurn 0173 394~ 49B kryO06l clr ~puv~l,O
017~ 39Z0 499 ~t ~puv~h~ 2 0177 ~a 500 b kryO08 ~01 ~
017B 390~ W Z k yOZ2 ~t ~Duv~1,0 017a 3960 W 3 ~lr ~Duv~h~2 017C aa 504 b k yO08 ~06 ~07 ~
017D 3r~ ~08 kryOOS ld ~,kryod ~09;
017F DF ~10 cmpr ~,~h'~
RO~ PaGE NO 6 0180 6168 ~11 b k~yO07 ~12 ;
OlB2 398~ 513 to~t DUV~l,O
0184 616a ~14 b kryO08 ~15 ~
0186 394S ~16 olr puv~l,O
~17 ;
51B ~
018~ 39 æ S19 clr ou-l,1 ~ZO;
018a 6173 ~21 b kryO06 ~ZZ;
~23 ;
RO~ PaGE NO B
OZOO ~24 or~ h'Z00 ~5Z~i ~
0200 3c2a ~26 d~t~ce~ ld ~,krynn OZ0Z 30 ~27 xch ~,h ~Z8 ;

~338043 CP~ TLCS-47 ~SSE~8LER VZ 2 LOC 08~ LINE SOURCE Sl~l t~
0203 10 529 mov h,~ t 0204 DF S30 cmpr ,Sh'f 0205 OE S31 tr~tp 0206 ~a 532 b d-t-O4 533 ~
0207 3C29 534 ld ~,krynd 0209 5C 535 t.-e ~o 020~ 9E S36 b d-t~OI
537 ~
020D SD 538 tr~t oeoc R2 539 b d~t- oe 540 ~
020D 5E 541 t~t ~,2 020E ~6 542 b d~t~O3 543 ~
oeOF 30 544 xch ,h 545 ;
oelO 30 546 d~t~OS xch ~,h oe 11 4F 547 ~d ~,Sh'~
oe 12 3FFD 54e ~t ~,dcm 0214 3FFE 549 d~t~O6~ ~t ~,dch oel6 10 5SO mov h,~
0217 3FFC 5Sl ~t ~,dcl 552 ;
oel9 33 S53 ldl ~,Odc 021~ 31 5S4 xch ~l ;

oe 18 32 5S6 ldh ~Odc~
oe lC 30 5S7 xch ,h -558 ;
oe lD 2R 5S9 d~t~10 rot 560 ;
021E 30 561 d~t~O1 xch ,h 021F 3824 562 or ~,Sh'4 0221 90 563 b d~t~OS
S64 ;
022Z 30 565 d~t~O2 t xch ~,h 0~-~ 382e 566 or ~,Sh'8 0225 90 567 b d~t~O5 568 ~
0226 30 S69 d~taO3 xch ~,h 0227 382C _570 or ,Sh'c 0229 90 571 b d-t~O5 572 ;
022P 3C29 573 d~t~O4 ld ~,kvynd 022C 30 574 xch ~,h 022D 4E 575 ld ~,Sh'o 022E 3FFD 576 ~t ~,dcm 0230 4F S77 ld ,Sh'~ ;
oe 31 94 578 b d~t~O6 ~ 338043 CP/~ TLCS-47 ~SSE~BLER V2 2 LOC 08J LINE SOUROE ~lur_NT
ROh POGE NO 9 02W 583 org h~250 5e4 ;
0250 2920 585 key-b~ ~ch hl,k--tbl 5e6 ~
0252 3C23 5e7 ld a~-pusk 5ae ~
0254 3912 5eg ~et pusl,1 ; k y curr-ntly dao rt~sion 590 ~
0256 D5 591 c~pr a,rh'5 0257 OE 592 t~tp z~
oe 5e OC 593 b k-ysb4 59~ ~
0259 3902 595 s-t tpu-l,O ; new charactcr ava il~bl-S96 ;
0258 390F 597 t s rvrc,O ; ervic- r-auest ~ge 7 025D oe 599 inc 600 ;
OZ5E 3FZ3 601 t a,-pu~k 602 ;
0260 05 603 rolc 604 ;
0261 3e3E 605 ~nd ,rh~-606 ~
0263 31 607 ~ch ~,1 60e ;
OZ64 C4 609 ld h,rh'4 610 ;
0265 3C20 611 ld a,kostbl 0267 OF 612 ~t a,Qhl 613 ~
026e le 614 inc - 1 615 ;
0269 3C21 616 ld a,k-stbh 026B OF 617 ~t a,Qhl 61e ;
026C 2P 619 k-y-b4t r~t RO~ PoGE NO 12 0300 621 org h'300 62Z ;
6Z3 ; k-yt routin-624 ;
0300 3FC3 625 k yt ~t a,k-ytb 626 ;
0302 40 627 ld a,rh~O
62e ;
0303 oe 629 k-ytOt irc a 0304 00 630 nop 0305 00 631 noo 0306 00 632 nap CP/M TLCS--47 ~SSE~IBLER V2. Z
P~GE e LOC OBJ LINE SOUUOE g I 1~
0307 OE 633 t~t D ~--0308 81~ 634 b k yt 1 63~ ~
0309 83 636 b k ytO
637;
030a 3CCB 638 k--yt 1 ld ~k ytb 639 ~
030C 2f~ 640 r t ROr~l P~GE NO. lZ
0313 648 org h' 315 649 ~
650 ~ 1 dd 031~ 10 652 l dd mov h, 653 ~
0316 5F 6S4 t~-t ~, 3 0317 99 65~5 b l ddOl 0318 ~8 6S6 b l ddOO
6S7 ~
658 ; ci i cod--659 ~
0319 3804 660 lCddOl ~dd ~, Sh' 4 031B 3FFD 661 ~t ~, dc~-03~D 4F 66Z ld ~,Sh'~
031E 3FFE 663 ~t ~, ~ch 0320 31 664 xch ~, 1 0321 3FFC 665 ~t ~, dcl 666 ~
0323 33 667 ldl ~,l~dc 0324 31 668 xch ~, l 032~i 32 670 ldh ,~, (tdc 0326 30 671 xch ~, h 672;
0327 ZF~ 673 r-t 674;
67S;
676; for ~ch scgu--m--nt 677;
0328 2920 675 l--ddOO- xch hl, k--~tbl 679;
032P EO 6eo ld l,SO
032B oe 681 ld h, S2 68Z;
03ZC 4F 683 ld ~,SI~'--032D lF 684 xor ~, ~hl -- 1 3~8043 CP/~ TLCS-47 ~SSE~BLER V2 2 ~r 03J LlNE SOURCE S(~lc _~T
6e~ ~
032E OF 686 st ~, ~hl 6e7 ;
032F 18 6e8 inc 0330 4F 689 ld ~, ~h~ f 690 ~
0331 lF 691 xor ~, ~hl 0332 OF 692 st ~, Qhl 693 ~
0333 29Z0 694 xch hl,k-~tbl 69~ ~
033~ Z~ 696 t 701 1~1 RO~ PqGE NO 13 03~0 703 org h'3~0 70~ ~ f 1 a~h routin-706 ~
03~0 3C35 707 fl~h ~ ld ,ld~tml 03~Z 3F39 708 ~t ~,ld~m1 03~4 3C36 709 ld ,ld-tm2 03 X 3F3P 710 st ~,ld~Z
03~8 3C37 711 ld ,ld-tll 03~P 3F3B 712 ~t ~,ld~ll 03~C 3C38 713 ld ~,ld-tl2 035E 3F3C 714 st a,ld~-lZ
71~ ~
0360 3C33 716 ld ~,di-plw 036Z ~C 717 t~t ~,0 0363 ~9 718 b l- hO ; ~d not flaffhing 719 ~
720 ~ ~d l~h ing 0364 4F 722 ld ~,rh'~
036~ 3F39 723 st ,ld~-~l 0367 3F3~ 724 st ,ld~-m2 72~ ~
0369 3C33 726 flash0~ ld a,displw 036a ~D 727 t--t ~,1 036C ~2 728 h fl~ hl ; lsd not flashinq 729 ;
730 ; lsd f 1~ - h i ng 731 ~
036D 4F 732 ld ~,~h'f 036E 3F33 733 st ~,ld~ll 0370 3F3C 734 ~t 4 ld--12 73~ ~
0372 3C34 736 fla~hl ld a,diffpiw 170 l 338043 CP~ TLCS-47 asSE~8LER V2 2 P~GE 10 LOC asJ LINE SOURCE ST~TErENT
0374 SD 737 t~t ~,1 037~ 63~C 738 b fl~30 1 indicator 'o~f' 0377 ~C 740 t-~t ~,0 - 0378 6393 741 b fla-20 ~ indicator 'on' 742 t 743 ;
744 ; indic~tor ~la-hing 74~ ;
037~ 3C36 746 ld a,}daem2 037C 3837 747 ~nd a,tO111 b 037E 3F36 748 ~t a,ldatm2 749 t RO~ P~GE NO 14 0380 3C38 750 ld a,ld-tl2 0382 3837 7S1 and ~,tOlllb 0384 3F38 7~2 t a,ldatl2 t indic~tor 'on' oc riod 7S3 ;
0386 3C3~ 754 ld a,lda-m2 038B 3828 7~ or a~SlOOOb 038P 3F3~ 756 t a,lda m2 757 t 038C 3C3C 7S8 ld ~,ld~-12 038E 3828 7~9 or a,tlOOOb 0390 3F3C 760 t a,ld~l2 ; indicator off' riod 761 ;
0392 2~ 762 rct 763 ;

76S ~
766 ; indicator 'on' 767 ;
0393 3C36 768 fla~201 ld a,ldatm2 039S 3837 769 and ~,ZOlllb 0397 3F36 770 ~t a,ld~tm2 771 ;
0399 3C38 772 ld a,ld-tl2 039E 3837 773 and a,tOlllb 039D 3F38 774 t a,ldatl2 77S;
039F 3C3A 776 ld a,lda~m2 03~1 3837 777 ~nd a,SOlllb 03~3 3F3P 778 ~t a,lda m2 779 ;
03~S 3C3C 780 ld a,lda~l2 03~7 3837 781 and ~,tO11 lb 03~9 3F3C 782 ~t a,ld~-12 783 ;
03~ 2~ 7e4 r t 78S ;
786 t indicator 'off' 787 ;
03~C 3C36 7B8 ~la~30~ ld a ldatm2 cp/~ TLCS-47 RssE~sLER V2 2 PRGE

nr OBJ L~NE SOURCE ~RIt~_~l 03RE 3s2e 789 or ~,tlOOOb 0380 3F36 790 ~t ~,ld~t~2 791 ~
03B2 3c3e 792 ld ~,ld~t 12 0384 3829 793 or ~,~lOOOb 03B6 3F3a 794 ~t ~,ld~t 12 7ss ;
03se 3C3R 796 ld ~,ld~ m2 03~R 3e2s 797 or ~,~lOOOb 03ac 3F3R 79e ~t ~,ld~m2 799 ~
o3sE 3C3C aoo ld ~,ld~-12 RO~ P~GE NO lS
03C0 3e23 801 or ~,tlOOOb 03C2 3F3C e~2 ~t ~,ld~l~
03C4 2~ 804 r t eos ~
806 nd RssE~sLY CO~PLETE, 0 PROG~A. . ERROR <S) - ~ 338043 CP/~ TLCS-47 Ass~sLER v2.2 P~GE 1 2 SY~BOL TRBLE
~aD0013 * co~aH OOlS * CO~aL 0014 DaTaOl 0ZlE
DaTaoz02Z2 DaTao3 0226 DaTao4 022a DaTao~ 0210 DaTao60214 * DaTaOH 0081 ~ DRTaOL 0080 ~ DaTA10 OZlD
* DaTalH0083 * DaTalL 0082 * DaTazH 008S * DaTa2L 0084 * DATa3Hooe7 * DaT~3L 0086 * DAT~4H 0089 * DaTA4L 0088 DaTacT OZOO DCH OOFE DCL OOFC DC~ OOFD
* DISP~0032 * DISPH 0031 DISPIW 0034 * DISPL 0030 D I SPLW0033 FLas2o 0393 FLas3o 03ac * FLasH 03~0 FL~SHO0369 FLasHl 0372 * INCOTH oosC * INCOTL oosa * INCOT~008B * KEST 00 æ KESTOH 0043 KESTOL 0042 * KESTlH004S * KESTlL 0044 * KEST2H 0047 * KEST2L 0046 * KEST3H0049 KEST3L 0048 * KEST4H 0048 * KEST4L 004A
* KESTSH0040 * KESTSL 004C KESTBH 0021 KESTBL 0020 KEYOOS017D KEY006 0173 KEY007 0168 KEyoos 016A
KYO100172 KEY020 0142 KEYOZl OlSl KEY022 0178 * KEY030OlSE KEYND 0029 KEYNN 002a KEYOD 002B
KEYON002C * KYS 0lOO KEYS8 02W KEYSB4 026C
KEYSCOOoE KEYT 0300 KEYTO 0303 KEYTl 030A
KEyTsoocs * LCICOT oooD LDasLl 0038 LDaSL2 003C
LDas~l0039 LDaS~Z 003~ LDaTLl 0037 LDaTL2 0038 LDaT~l003S LDAT~Z 0036 * LDISP OBOO * LECOTH 008F
* LECOTL008D * LECOT~ 008E * L0 D 031S LEDDOO 0328 LEDDOl0319 * LIOVFl 0600 * LIOVF2 ODOO * L~aIN 03E0 * LREro OEOO * LTaBLE oooo * CVLFEX OCOO * ovER2a 0072 *-OVERZH0071 * OVERZL 0070 * OvERal 0012 ~ OVERHl 001L
~ OVERLl0010 * PaRITT OOOC * PaRITY 0008 * READC 0028 * RE~DNooz7 * RE~DO 0060 ~ RE~Dl 0061 * RE~D2 0062 * RE~D30063 * RE~D4 0064 * RE~DS 006~ * RE~D6 0066 * RE~D70067 * RE~oa 006a * RE~OH 0069 * RE~OL 0068 * RKCE OOSO RKCEO 006C RKCEl 0071 RKCE2 0078 * RKCE3007F RKCE4 006B RKCE~ 00ss * RNH 006~
* RNL 006D ~ RN~ 006C * RWRPCH 00ca * RWRPCL 00cs * RWRPC~00C9 SERVRC 000F SPUCP 00Z4 SPUFF 0017 * SPUSH0003 SPUSK 0023 SPUSL 000Z ~ SPUVD~ 0004 SPUVSH 0000 SPUVSL oOOS ~ sPw u~ oool ~ sPw 00FF
* SPWB OOC7 * TI~R2H OOF~ ~ TI~R2L 0oFs * TI~R2~ 0oFs * TI~RHN 00F6 * TI~RHO 001B * TI~RLN OoF4 * TI~RLO 0019 * TIYR~N 00F~ * TI~R~O oola ~ VLFC oooa * VLFEC 0016 * VLFRB ooos * VLFTB 0008 ~ VLFTH 0007 * VLFTL 0006 * vLFxa oOS2 * VLFXH OOSl * VLFXL 00 W * waRpcL 00C4 * waRpcy 00C~ * WRITEH 00Z6 * WRITEN OOZS
DEFINED 167 USER SY~BOL(S) CP/h TLCS-47 ~SSE~8LER V2 Z
P~6E

LOC OBJLINE SOURCE Sl~ iT

3 ; data tabl-6 ~
7 ; ~ d coding eabl-ROh P~GE NO 60 OF20 9 org h'fZO
OF20 0111 daea h'O1 ~ '00' read st-tu~
OF21 1012 d-t- h'10 ~ '01~ indicator power cont rol OFZZ 1013 daea h'10 ~ '02' indicator mode OF23 1014 data h~10 ; '03' d-vic- input control OF24 1015 data h'10 ; '04' devic- outout contro OF25 10 16 ~ data h~10 ~ '05' powor r-lay control OFZ6 00 17 d~t- h'OO ; '06' cl-ar di-Play OF27 10 12 d~t~ h~10 ~ '07' d-vice disolay contr ol 19 ~
OF2B 10 20 data h'10 ; '0e' in~ rt character OF29 02 21 d~ta h'02 ; '09' road d-vic- data OF2P 20 Z2 d-ta h'20 ~ 'Oa' disDlay character at ~p cifi d oo~i tion OF2B 0F 23 data h~Of ; 'Ob' condition-l poll OF2C 00 24 d-e- h'OO ; blank OFZD 00 2~ data h'00 ; blank OF2E 00 26 d~ta h'OO ; blank OFZF 00 27 data h'OO ~ blank 2~ ~
0F30 00 29 data h'OO ; bl-nk OF31 00 30 data h'OO ; blank OF32 00 31 data h'OO ; blank OF33 00 32 d-t- h'OO ; blank 0F34 00 33 data h'OO ; blank OF35 00 34 dat~ h'OO ; blank OF36 00 35 data h'OO ; bl-nk OF37 00 36 dat- h'OO ; bla~k 37 ~
0F38 00 3e data h'OO ; bl-nk aF39 00 39 data h'00 ; blank OF3P 00 40 data h'OO ; blank 0F3a 00 41 dat- h'OO ; blank OF3C 00 42 data h'OO ; blank OF3D 00 43 data h'OO ; blank OF3E 00 44 data h'OO ; bl-nk OF3F 20 4~ data h'20 ; command ~pan~ion 46 ~
47 ;
4e ~ a~cii coding 49 ;
ROh~P~GE NO 61 CP/~ TLCS-47 ~SSE~3LER V2.2 P~OE 2 LOC OBJ LINE SOURCE Sr~lt~

OF40 50 org h~f40 ~1 ~
52 ~ f40-f4f ~4 ~
55 ~ f40 --6f -> h'-f- 'bl~nk' 56 ~
OF40 FF 57 d-t~ h'f-OF41 FF 58 d~t~ h'--OF42 FF 59 d-t~ h' f -OF43 FF 60 d~t~ h~f OF44 FF 61 d~t~ h~ f -OF45 FF 62 d~t~ h'f-OF46 FF 63 d-t- h'ff OF47 FF 64 d~t~ h~ff 65 ~
OF48 FF 66 d~t~ h'f-OF49 FF 67 d~t~ h~f-OF4~ FF 6~ d~t~ h~--OF4~ FF 69 d~t~ h~ff OF4C FF 70 d~t~ h'f-OF4D FF 71 d-t~ h~f-OF4~ FF 7Z d~t~ h~f-OF4F FF 73 d~t- h' f -7~.;
76 ~
OF50 FF 77 d-t- h' f -OF51 FF 7e d~t~ h'f-0F52 FF 79 d-t- h~ ff OF53 FF 80 d~t~ h~-f OFS4 FF 81 d~t~ h' ff OF5~ FF ez d~t- h'f~
OF56 FF 83 d~t~ h' ff OF57 FF 84 d~t~ h~f-B5 ~
OF58 FF 86 d~t~ h~f-OF59 FF 37 d-t- h' ff OF5~ FF 88 d~t~ h~ff OF5~ FF 89 d-t- h'f-OF5C FF 90 d~t~ h' fr OFSD FF 91 d~t~ h'ff OF~E FF 9Z d~t~ h'--OF5F FF 93 d~t~ h'ff 94 ;
95 ~ f60-f6f 96 ;
OF60 FF 97 d~t~ h' f 0F61 FF ga d~t~ h'f-OF62 FF 99 d~t~ h' ff OF63 FF 100 d~t- h' fr OF64 FF 101 d~t~ h~ff OF65 FF lOZ d~t~ h'f~
OF66 FF 103 d~t~ h'f-1 33804~

/~ TLCS-47 ~ssE~s ER V2 2 P~GE 3 Loc OB~ LI~E SOURCE ~1~1~ _~T
OF67 FF 104 d~ta h'ff 105 ~
oF6e FF 106 d~t~ h'-f oF6s FF lo7 d~t~ h~ff OF6~ FF loe d~t~ h'ff OF6B FF lO9 d~t~ h'~f OF5C FF llO d~t~ h'ff OF6D FF 111 d~t~ h'~f OF6E FF llz d~t~ h'-f OF6F FF 113 d~e~ h'ff ll4 ~
f70-~
l~6 ~
OF70 co 117 d~ta h~cO ~ O
OF71 Fs lle d-ta h'f9 ~ 1 OF72 ~4 ll9 d~t~ h' .4 ~ 2 OF73 BO 120 d~t~ h~bO ~ 3 OF74 99 lZl d-t~ h'99 ; 4 OF7~ 92 122 d~ta h' 92 ~ S
OF76 e2 123 d~t~ h' e2 ~ 6 OF77 Ds 124 d~t~ h' de ~ 7 l25 ~
oF7e eo l26 d~t~ h~eo ~ e oF7s 9o l27 d-t~ h'90 ; 9 OF7PI FF lze d~t~ h~f- ; blank OF7B c9 lZ9 d-t~ h'c9 ~ 11 -OF7C FF 130 d~t- h'ff ; bl~nk OF7D D7 131 d~t~ h~ b7 ; -OF7E FF 132 d~t~ h~ff ; bl~nk OF7F FF 133 dat~ h'fr ; bl~nk ;
13S ~ ~eo-fe~

RO~ PaGE NO 62 oFeo FF 137 d~t~ h~-f ; blank oFel ee l3e dat~ h' ee ; ~
oFez e3 139 d-ta h' e3 ; b oFe3 C6 140 data h' c6 ; C
oFe4 ~l 141 d~ta h'al ; d oFes e6 142 d~t~ h' e6 ; E
oFe6 eE 143 d~ta h' e- ; F
oFe7 e2 144 d~t~ h' e2 ; G
14~ ;
oFee es 146 d~t~ h'e9 ; H
oFes CF 147 d~ta h'cf ; I
0Feq El 14e d-t~ h'-l ; J
oFe3 FF 149 data h'-- ; blank OFBC C7 lSO d~t~ h'c7 ; L
oFeD FF lsl d~t~ h'fr ; bl~nk oFeE FF lS2 d~ta h'f- ; blank oFeF co lS3 d~ta h'cO ; O
154 ;
lss ~ f90-f9f CP/h TLCS-47 assE~sLER V2. 2 paGE 4 LOC osJ LI~E SOUROE Yl~lt~_~T
1~6 ~
0Fso 8C 157 d-t- h' ec 5 P
0Fsl FF l~e dat~ h'-f ; bl~nk oFs2 aF l~9 data h' af ~ r 0Fs3 92 160 data h' 92 ~ 5 oFs4 FF 161 data h~ff ; blank 0Fs~ cl 162 d~ta h'cl 5 U
0Fs6 FF 163 d~- h~ff ; bl~nk Of97 FF 164 d~ta h' ~f ; bl~nk 165 ~
0Fss FF 166 d~t~ h' ~f ~ bl~nk 0Fss FF 167 dat~ h'~ ; bl~nk oFsa FF 168 d~t~ h'-f ~ blank oFsB FF 169 dat~ h'~f ; bl~nk 8Fsc FF 170 d~ta h' fr ; blank oFsD FF 171 d~ta h' rf ; bl~nk 0FsE FF 172 d~ta h' ff ~ bl~nk 0FsF BF 173 data h' bf ; bl~nk 174 ;
17~ ; ~O-f~f 176 ;
0Fao FF 177 d-t- h' ~f ; bl~nk OFOl se 17a d~t~ h' se ; P
OF02 e3 179 d~ta h' e3 ; b OF03 C6 180 d~t~ h' c6 ; C
OF~4 Ol lel dat~ h' 1 ; d OFo~ 86 162 d~ta h' e6 ; E
OF~6 eE 183 d~t- h' e- ; F
OF07 e2 1e4 d~ta h' e2 ; G
~es ;
0FQs es le6 data h~e5 ; H
oFas CF 187 data h'c~ ; I
0F~a E1 188 d~t~ h'-1 ; J
oFaa FF le9 dat~ h' ff ; al~nk OFOC c7 l9O d-ta h~c7 ; L
oFaD FF l9l d~ta h~ff 5 bl~nk oFaE FF 192 data h' ff ; bl~nk OFRF co 193 data h' cO ; O
194 ~
19~ ; fbO-fbf 196 ;
OFBO sc 197 dat~ h' 8c ; P
OF31 FF lse d~t~ h'~ ~ bl~nh OFBZ OF l99 dat- h'~f ; r OF~3 92 200 d~t~ h' 92 ; s OF~4 FF 201 d~ta h~f ; bl~nk OF3~ Cl 202 data h'cl ; blank OF~6 FF 203 d~ta h~fr ; bl~nk OF37 FF Z04 dat~ h'~ ; bl~nk 205 ~
oFBs FF 206 data h'~ ; bl~nk oF~s FF 207 d~t~ h'ff ; blank OFD~ FF 20e data h'ff ; bl~nk oF3s FF 209 dat- h' ~f ; blank OF~C FF 210 data h' ~f ; blank ~ 338043 CP/~ TLCS-47 ~S~r CR V2.Z
PqGE ~5 LOC 08J LlNE SOUROE Slb~
OF8D FF 211 d~t~ h'~- ~ bl-nk OF8E FF 212 d~t~ h'~ I bl~nk OFBF FF 213 d~t- h'~f ~ bl~nk Z14 ;
21~ ;
Z16 ~r~ot- control d~t~

ROh PaGE NO.63 OFCZ 21e org h'fcO
219 ~
OFCO FF æo d-t- h~ff OFC1 FF Z1 d-t~ h'ff OFC2 FF ~ d-t~ h'-f OFC3 FF æ3 d~t~ h'f-OFC4 13 æ 4 d~t~ h'13 ~ on / of~
OFCS 11 Z5 d-t~ h'11 ; v-nt OFC6 FF æ6 d-t~ h'ff OFC7 16 æ7 d~t~ h'16 3 clc~r OFC8 FF æe d~t~ h'ff OFC9 FF æg d~t~ h'~-OFC~ FF 230 d~t~ h'-f OFC8 FF 231 d~t~ h'~
OFCC FF 232 d-t- h~ff OFCD 12 233 d-t~ h~12 ; ~uth OFCE FF 234 d-t- h'ff OFCF 17 235 d-t~ h~17 ~ ~cnd OFDO FF 23~ d-t- h'~
OFD1 3e 23e d-t~ h'38 ; e OFDZ 34 Z39 d~t~ h'34 ; 4 OFD3 10 Z40 d-t~ h'10 OFD4 3Z Z41 d~t~ h'3Z ; 2 OFD5 14 242 d-t~ h'14 ; -0FD6 36 243 d~t~ h'36 ; 6 OFD7 FF 244 d~t~ h'--OFD8 31 245 d-t~ h'31 7 1 OFD9 39 246 d-t~ h'39 ; 9 OFD~ 35 247 d-t~ h'3~ ; S
OFDB FF 248 d~t~ h'--OFDC 33 249 d-t~ h'33 ; 3 OFDD 30 250 d-t~ h~30 ~ O
OFDE 37 251 d-t~ h'37 ; 7 OFDF lS 25Z d~t~ h'lS J ~c-n 254 ;
RO~ P~6E NO.63 OFE7 25S org h~f-7 2~6 ;
257 ;~ kny~c-n d~t~
25e ~
OFE7 37 259 d~t~ h' 37 ~ '7-CP~ TLCS-47 ~SSE~BLER V2.2 P~CE 6 LOC OBJ LINESOURCE ~l~lt~
OFE8 08 260 d~t~ h~OO
OFE9 00 261 d~t- h'OO
OFE~ 00 262 ~ d-t~ h'00 ~ no u~
OFE3 32 263 d~t~ h'32 ~ '2' 0FEC 00 264 d~t~ h'OO ~ no u--OF0 34 26~ d~t~ h'34 3 '-4' O~c 13 266 d~t- h'13 ~ 'on~off' OFEF 00 267 d~t~ h'OO ~ no uss OFFO 14 268 d~t~ h'14 OFFl 1~ 269 d~t~ h'l~ 7 pc~fc c-n OFF2 16 270 d-t- h~16 ; 'c' OFF3 36 271 d~t~ h'36 ; '6' OFF4 17 272 d~t~ h'17 ~ s~vnd OFF~ 00 273 d~t~ h'OO ~ no u~s OFF6 00 274 d~t~ h'OO ; no u-s OFF7 12 27~ d~t~ h'12 ; ~uth OFFe 10 276 d~t~ h'10 OFF9 11 277 d~t~ h~ s~ov~nt OFF~ 3~ 27B d~t~ h~3 OFF~ 33 279 d~t~ h'33 ; ~3 OFFC 30 2eO d~t~ h~30 ; ~o~
OFFD 39 291 d~t~ h'39 ~ ~9~
OFFE 3e 2e2 d~t~ h~38 ; 'e' OFFF 31 283 d~t~ h~31 ; "' 284 ;
2e~ ~
2B6 nd ~S~c. Y CO~PLTE,O PRGGRB" ERROR~S) - ~ 333043 -cp/~ TLCS--47 ~qS~ FR V2. 2 PaGE 7 SY11~80L Tas~_ DEF~NED O USER SYYBOL (S) CP~ TLCS-47 ~SSE~BLER V2.2 P~6E

LOC 08J LINE SOURCE ~r~,~ _~, 1 ~ ;
2 ; 7.1983. ;
3 ~ 1di~p.~m Vl.O
4 ~ ~T~P4740P) 5 ;
6 $ di~pl - y routin- ;
7;
8 ~ ;
9 ~ ;

~noli~t ~ t RO~ PPGE NO.44 0800 304 org h'bOO
30~ ;
306 ; int-rrupt~ n-bl-0800 3F32 30e ~t ~, di - p~
OBOZ 44 309 ld , ~OlOOb OB03 13 310 xeh ~,-ir 0804 366F 311 iclr il,lOllllb 313 ;
314 ~
315 ~ pu~h r-gist-r 316 ;

0806 2930 31e xeh hl,dl~pl 319 ;
320 ; eount up l-d count-r 321 ~
OB08 3C8D 32Z ld ~,l-eotl osoa oe 323 inc 0808 3F8D 324 ~t ,1ecotl 32~ ;
080D DO 3Z6 cm~r ~,th'O
080E 83 327 b di~plO
32e ;
080F 3C8E 329 ld ~,1-eotm OBll oe 330 ine 0812 3FBE ~ 331 ~t ~,1ueotm 332 ;
0814 DO 333 cmpr ~,~h'O
0815 B3 334 b di~plO
33~ 1 1 33~043 /~ TLCS-47 ~ssE~sLER vz Z
P~GE Z

LOC OBJ LINE SOUR OE STb~ T
0816 3csF 336 1 d a~ l oth osle oe 337 inc OBl9 3F8F 33e ~t a,l coth 339 ~
0818 DO 340 cmpr a,th~O
081C 93 341 b di~plO
342 ~
343 l 344 ~ count-r ov r flow 34~ ;
346 s O9lD 4F 347 ld ~,~h'f oslE 3FsF 34e ~t ~,l coth 0820 43 349 ld ~,~h'3 OB21 3FsE 3W ~t ~ cotm 0823 40 3~1 ld ~,~h'0 0824 3FeD 3S2 t ~,l-cotl 3S3 ~
0826 3C33 3~4 ld ~,dl-plw ; inv-rt fl~q 0828 3S~
os2e SE 3~6 tsst a,Z
0829 ~F 3~7 b di-p 12 3se ~
os2P 3838 3ss nd a,flOllb 360 ~
os2c 3F33 361 ~t ~, d~plw ; ~l~->~
os2E 83 362 b disolO
363 ;
os2F 3824 364 di-pl2~ or ~,f0100b 0831 3F33 36~ t ~,displw ~ 'O'-)'l' 366 ;
367 ;
368; l d on 369 ;
370 ;
0833 3C33 371 dl~pl0 ld a~ di~plw os3s sE 372 t-~t ~,2 0836 6863 373 b di~pll ` ; im~ginaly part 374 ;
37S ;
376 ; r-~l part 377 ;
37e ;
379 ;
380 ; lsd 'on' 381 ;
os3e SF 382 tcst a,3 0839 6s4F 383 b diSpl3 ; lsd 'on' 384 ;
38S ; msd 'on' 386 ;
0838 3837 3e7 ~nd ~,~0111b 0s3D 3F33 3es ~t ~,di~plw os3F 3C3~ 389 ld ~,ldatml :-~ 1338043 -CP/~ TLC5-47 ~SSE~8LER V2 2 P~GE 3 LOC 08J LINE SOURCE ST~
RO~ PqGE ~0 4S ~
0841 3A~1 390 out ,SopO1 0843 3C36 391 ld ~,ld-trZ
084S 3P~2 392 out ~,Sop02 0847 38S6 393 clr SopO6,1 0849 3B26 394 c t ~opO6,2 39~ ;
0848 392S 396 -t spuv~1,2 ~ 'k ycc~n rcady~ o n 397 ~
084D 6889 398 b di-piO
399 ~
400 1 l~d 'on' 084F 3828 402 di~pl3~ or ~,tlOOOb 0851 3F33 W3 ~t a~di~plw 08S3 3C37 -40~ ld ~,ld~tll 085~ 3~1 406 out ~,SopOl 08S7 3C38 407 ld ,ld-t12 08~9 3~2 408 out ~,Sop02 08S8 3816 409 ~-t SopO6,1 085D 3866 410 clr XopO6,2 411 ~
085F 6a89 412 b di-piO

414 ~
41S I im gin~ly p~rt 417 ~
418 ; kmy sc-n ro-dy 419 ;
0861 392~ 420 ~t puv~1,2 421 ;
0863 SF 42Z displl tc~t ~,3 0864 89 423 b displ4 424 ~
42S I m~d 'on' 426 ;
086~ 3837 427 ~nd ~,~Olllb 0867 3F33 425 st a~displw 429 ;
0869 3C39 430 ld ,ld~ml oa68 3~1 431 o~t ~,%op01 086D 3C3P 432 ld ~,ldasm2 086F 3~2 433 out ~,~op02 434 ;
0871 3826 43~ ~t XopO6,Z
0873 3BS6 436 clr ~opO6,1 437 ;
087~ 392S 438 sot ~puv~1~2 ; kcy sc~n rrady 439 ;
0877 6~89 440 b di~piO
44~ ;
442 ; l~d 'on' CP/~ TLCS-47 ~SSEM8LER ~Z.2 P~GE 4 LOC 09J LINE SOURCE Y r~ NT
443 ~
0879 3B28 444 di~pl4~ or ~,~lOOOb 0378 3F33 445 .e " di.PlW

087D 3C3~ 447 ld ~,ld--ll 087F 3~1 44a out ~,SopO1 RO~ P~GE NO.46 ~
08el 3C3C 449 ld ~,ld~-12 08e3 3~2 4~0 out ~,Sop02 4~1 ~
0~8~ 3816 ~2 ~-t XapO6,1 0887 3B66 453 clr %opO6,2 4~5 ~
456 I r eurr 4~8 ~
0989 2930 459 di~piO~ xch hl,di~Dl 460 ~
0888 47 461 ld ~,~h'7 462 ;
088C 36~F 463 dlclr il,lOllllb 464 ~
088E 3ClC 46~ ld ~,-irb 0a90 13 466 xch ,-ir 0891 3C32 467 ld ~,di~p~
46a ;
0993 28 469 r ei 471 nd ~SSE~8LY CO~PLETE, O PROGR~ ERROR(S) CP/~ TLC5-47 RSSE~8LER V2.2 PRGE

SY~80L TR8-E
* CO~RD 0013 * CO~RH 001~ * CO~RL 0014 * D~TROH 00el * DRTa8L 00eO * DRTRlH 0083 * DRTRIL 008Z * DRTR2H 008~
DRTR2L 0084 * DRTR3H 0087 { DRTR3L 00e6 * DRTR4H 00e9 * DaTR4L 008e * DaTRCT OZOO * DCH OOFE * DCL OOFC
DC~ OOFD DISPR 0032 * DISPH 0031 DISPIO 0889 * DISPIW 0034 DISPL 0030 DISPLO 0833 DISPLl OB63 EIRB OOlC * FLASH 0350 * INCOTH 008C * INCOTL 008R
* INCOT~ 0088 * KEST OOZ2 * KESTOH 0043 * KESTOL 0042 * KESTlH 004~ * KESTlL 0044 * KEST2H 0047 * KESTZL 0046 * KEST3H 0049 * KEST3L 0048 * KEST4H 004B * KEST4L 004R
* KESTYH 004D * KEST5L 004C * KEST8H 0021 * KEST3L 0020 * KEYND 0029 * KEYNN 002R * KEYOD 002B * KEYON OOZC
* KEYS 0100 * KEYSB 02YO * KEYSC OOOE ~ KEYT 0300 * KEYT8 OOCB * LCICOT OOOD LDRSLl 0038 LDRSL2 003C
LDaS~l 0039 LDRS~2 003R LDRTLl 0037 LDRTL2 0038 LDRT~l 0035 LDRT~2 0036 LECOTH 00eF LEC~TL 00aD
LECOT~ 008E * LEDD 0310 * LIOVFl 0600 * LIOVF2 ODOO
~ L~RIN 03E0 * LRE~O OEOO * LVLFEX OCOO * OVER2R 0072 * OVER2H 0071 * OVERZL 0070 * OVERRl OOlZ * OVERHl OOll * OVERLl 0010 * PPRITT 000C * PaRITY 000B * RE~DC 0028 * READN 00Z7 * RE~DO 0060 * RE~Dl 0061 * RE~DZ 0062 * RE~D3 0063 * RE~D4 0064 * RE~D~ 0065 * RE~D6 0066 * RE~D7 0067 * RE~OR 006A * RE~OH 0069 * RE~OL 006~
* RKC~ 0050 * RNH 006B * RNL ~ 006D * RN~ 006C
* RWRPCH 00CA * RWRPCL OOC8 * RWRPC~ OOC9 * SERVRC 000F
* SPUCP 0024' * SPUSH 0003 * SPUSK 0023 * SPUSL OOOZ
* SPUVD~ 0004 * SPUVSH 0000 SPUVSL 000Y * SPUVU~ 0001 * SPW 00FF * SPW8 00C7 * TR8LE 0000 * TI~RZH 00FR
* TI~R2L oOFe * TI~RZ~ OOF9 * TI~RHN OOF6 * TI~RHO 0018 * TI~RLN OOF4 * TI~RLO 0019 * TI~R~N 00F5 * TI~RrO 001R
* VLFC OOOR * VLFEC 0016 * VLFRB 0009 * VLFT8 oooe * VLFTH 0007 * VLFTL 0006 * VLFXA 005Z * VLFXH 0051 * VLFXL 00 W * WRRPCL OOC4 * WRRPC~ OOC~ * WRITEH 0026 * WRITEN 002Y
DEFIN 0 137 USER SY~BOL~S~

CP/~ TLCS-47 ~SSE~LER VZ.2 P~GE

LOC OBJ LINE SOUROE ~I~l~._~T
1 ~ ;
2 ~ 7.19B3. ;
3 ~ lt-bl~ 0 Vl.O
4 J ~T~P4740P) ~ ~ ;
6 ; ~-bl- routin~
7 ;
8 ;
9;

~noli~t t 27 ; `
RO~ P~ OE Na. O
0000 2B org h'OOO
0000 63E0 29 b lm~in 30 ;
0002 6C00 31 b lvlf-~
32 ;
0004 28 33 r~ti 000~ 00 34 noP
3~ ;
0006 6600 36 b liovfl 37 ;
0008 6D00 38 b liovf2 39 ;
000~ 6800- 40 b ldi-P
41 ;
OOOC 6E00 42 b lr-mo 43 ~
44 nd ~SSE~8LY CO~PLETE, O PROGRF.:I ERROR(S) CP/M TLCS-47 ~5SE~8LER V2.Z
P~GE 2 5Y~80L T~aLE
LDISP 0800 LIOVFl 0600 LIOVF2 ODOO L~IN 03EO
LRE~O OEOO LVLFEX OCOO
DEF~N0 6 USER SY~80L(S) CP/~ TLCS-47 ~SSE~8LER VZ,2 P~GE

LOC OBJ LINESOURCE ST~TE~ENT
1 ~ ;
z ~ ~ 1983 3 ;liovfZ,~sm Vl,O
4 ~ ~T~P4740P) 5 ~ ;
6 ; r-motw con routin- ;
7 l a;
9;

nolist l~t 268 ;
RO~ PaGE NO,5Z
ODOO Z69 org h'dOO
270 ;

272 ~
273 J pu~h r-gi~e r 27~ ~
ODOO 3F72 276 ~t ~,ov-r2-ODO2 44 - 277 ld ~,tO100b ODO3 13 278 xch ~,-ir ODO4 366F 279 iclr il,lOllllb 0D06 2970 2BO xeh hl,ov-r21 281 ~;
282 ~; t im-r2 stop 283 ~;
ODO8 40 2B4 ld ~,SO
0D09 3a8D 285 out ~, Xopld 288 ;
289 ;; ch-ck Nl routin--290 ~
ODOB 3C6B 291 ld ~rr,h OD0D Dl 292 cmpr a,Sl ODOE 6D43 293 b r-mlOO ; Nl w~s not '1' 294 ;;
295 ;; Nl-l 296 ;;
ODlO 35D0 297 t-stp X00,1 ; chrck port for remot~
OD12 ~F 298 b r~mZOO ; Dort w~s '1' ,it w~s n~t st~rt bit 299 ;
300 ;; it w~s st~rt Dit 3al ~

CP/~ TLCS-47 RSSE~BLER V2 2 PaGE 2 LOC OEJ LINE SOUROE STRTE~E~T
OD13 42 302 ld ,~2 OD14 3F6a 303 ut ~rnh ~ ~2-2 304 ;
3a5 ~ ~-tting tim r2 OD16 3B06 306 u-t XaD06,0 ODle 4F 307 ld ,Sh'f ODl9 3FF~ 308 ~t ~,timr2h OD13 4D 309 ld ~,~h~d ODlC 3FF9 310 t ~,timr2 ODlE 47 311 ld ~,S7 ODlF 3FFe 312 ~t ~,timr21 313 ;~
OD21 4e 314 ld .,se OD22 3ReD 31~ out ~,~opld ; tim r2 ~t~rt 316 ~
317 ~ r turn routin-318 ~
OD24 2970 319 r-m300 xch hl,ov r21 OD26 47 320 ld ~,SOlllb OD27 36~F 3Z1 diclr il,lOIlllb ~ OD29 13 322 xoh ~,-ir OD2R 3C72 323 ld ~,ov-r2 324 ~
OD2C 3D46 32~ olr SopO6~0 OD2E 2D 326 r-ti 32B ;~
OD2F 39F0 329 r m2001 t-ntp spuv-h,3 OD31 B3 330 b r m210 331 ;
OD32 ~4 332 b rom300 ~ 3ump to roeurn routine 333 ~
334 ;
OD33 3B06 33~ r m210~ ~et XopO6,0 OD3~ 4F 336 ld ~,Sh'f 0D36 3FF~ 337 ~t ~timr2h OD3e 4~ 33e ld ~,t5 OD39 3FF9 339 ~t ~,timr2 OD3D 4E 340 ld ~,rh'-OD3C 3FFa 341 ~t ~,timr21 342 ;;
OD3E 48 343 ld ~, sa OD3F 3RBD 344 out ~,~opld 34~ ;;
RO~ PRGE NO ~3 ~
0D41 6D24 346 ~ rnm300 347 ;;;;;;;;;;;;;;;;;;;;;;;;
346 ;;;;;;;;;;;;;~;;;;;;;;;;
349 ;;;;;;;;;;;;;;;;~;;;;;;;
3~0 ;
3~1 ~
3~2 ; N1 w~ not '1' 3~3 ;

CP/~ TLCS-47 ~SSE~8LER V2 Z

LOC 03J LlNE SOUROE S r~, ~ ._Nr OD43 3c6a 3~4 rr~100~ ld ~,rnh OD45 DO 35~ cmpr ~,50 OD46 OE 356 t.......... ep ~f OD47 92 357 b remllO
OD48 88 35B rrlOOO b rrlOOO
359 ;~
360 ~
OD49 40 361 r~ml201 ld ~,~0 OD4A 3F6a 362 st ~rnh OD4C 3F6C 363 ~t ~,rnn OD4E 3F6D 364 st ~,rnl 36~ ~
OD~O 6D24 366 b r m300 367 ~;

369 ~J;
OD52 3930 370 r mllO~ te~t spuv~h,3 OD54 89 37S b rrml20 T Fl w~- not '1' 372 ;
373 ; d~t~ cr~t routine 374 ~
OD5~ 3970 37~ clr spuv~h,3 OD57 3952 377 clr spu~l,l ; ~key currently dcDrressed off 378 ~
OD~9 6D24 379 b r m300 ~ r turn 381 nd ASSE~BLY CO~PLETE, O PROGR~; ERROR(S) CP~ TLC5-47 PSSE~BLE2 V2.Z

SY~BOL TA8LE
* CO~PD 0013 * CO~FC 0015 * C0~6R 0014 * DAT~CT 0200 * DCH OOFE * DCL OOFC * DC~ OOFD * DISPP 0032 * DISPH 0031 * DISPIW 0034 * DISPL 003a * DISPLW 0033 INCOTH 003a * INCOTL 0039 * INCOT~ 003A * KEST 0043 * KESTOH 0023 * KESTOL 0022 * KESTlH OOZS * KESTlL 0024 * KEST2H 0027 * KEST2L OOZ6 * KEST3H 0029 * KEST3L 002B
~ KEST4H 0029 * KEST4L OOZP * KESTBH 0041 * KEST~L 0040 * KEYND 002C * KEYNN 002D * KEyaD 002E * KEYON 002F
* KEYS 0100 * KEYS6 0250 * KEYSC OOOE * KEYTa OOC3 ~ LCICOT OOOD * LDPTLl 0037 * LDPTLZ 0038 * LDPT~l 0035 .* LDPT~Z 0036 ~ LD}SP OBOO * LECOTH 003E * LECOTL 003C
* LECOT~ 003D * LIOVFl 0600 * L~RIN 03EO ~ LRE~O OE00 LVLFEX OCOO OVER2a 0072 * OVER2H 0071 0VER2L 0070 ~ OVERPl OOlZ * OVERHl 0011 * OVERLl 0010 * PPRITT OOOC
* PARITY OOOS RE1000 OD4B RE~100 OD43 RE~llO OD~2 RE~lZO OD49 RE~ZOO OD2F RE~Z10 OD33 RE~300 ODZ4 * RE~DO 0060 * RE~Dl 0061 * RE~D2 0062 * RE~D3 0063 * RE~D4 0064 RE~D~ 0065 ~ RE~D6 0066 * RE~D7 0067 * RE~OA 006P * RE~OH 0069 * RE~OL 006B * RKCE 00~0 - RNH 006a RNL 006D RN~ 006C ~ RWRPCH OOCP, * RWRPCL OOCB * RWRPC~ OOC9 * SERVRC OOOF * SPUCP 00Zl * SPUSH 0003 * SPUSK 0020 SPUSL 0002 * SPUVD~ 0004 SPUVSH 0000 * SPUVSL 0005 * SPUVU~ 0001 * SPW OOFF
* SPWB OOC7 * T~BLE 0000 TI~RZH 00FP TI~RZL oOF8 TI~RZ~ OOF9 * TI~RHN OOF6 * TI~RHO 0018 * TI~RLN OOF4 TI~RLO 0019 ~ TI~R~N OOF~ * TI~R~O OOlP * VDPTPH OOle VDPTPL 0017 * VLFC OOOA * VLFEC 0016 * VLFR~ oo09 * VLFTa 0008 * VLFTH 0007 * VLFTL 0006 * VLFXP 00~2 VLFXH 0051 * VLFXL 0050 * WARPCL 00C4 * W~RPC~ 00C~

DEFINED 116 USER SY~SOLtS~

-FILE: DROF7_P~T:UEH~Rn HE~.~LETT-F~CK~RD: Bq41 hs=embl-r LOC~TiO~ OB-JECT 50DE LIHE EOU~I-E LIHE
1 '~Q41' 2 ~*~*~t~k~t*t~t*-~*********~ ****tr**-~*~t~*.~***i*~******<t*~*~****
4 ~ 042 Drc~p Prc~se r~r M31n PJutinc 5 ,*- ~t 6 ;*~t~*~*~****~t******~***~**'t~*~t~t~t*~'t~*~*~t-**~****~*-~k~**tt~'t*'t ; S~S~ l;S Usinq Pcqicter >.~3~ ?',?"'s'~ "?` ;
E3n~. n ~ ;R~ -- 5enerai Reglster --5Qn~ert,cr ln. ;RI ------ Gencra~ Rcqi~.er --Ue~ in clrQp pQIl map 11 ;R2 ------ Gcncral Re~istcr --CQn~:ertcr

12 :R3 ------ Ccnel31 PcQitcr --Cc~n~crt_r , Sc.ft cQuntsr 1'. ;R4 ------ Gencral Pcqitcr J RF c3~1~ IA~ itch ~I B~,QrL c3t~1~ nun..
14 ;FS ------ EQuntcr for sQun~ n4 5~tD
15 ,~
16 ;R. ------ Interrupt rc~ueine -t.~r~. 3~ire ~7 ; - -- ----------______________________ ~ t.~5~ 5~ . PQrt Iq~ ,PI ~5~ <4~ ~3> 52~ :Q.- Sut~cc~-it~cr Eelcct 20 ;PI ~'? Tct. ~itch ~'. Peet ~ut ~' IS us.l~ ut-~
21 ;P4 <3' '2~ t'1? ~0> C~n~erter CQntrol 22 ~FS ~B~ ~'.2> '1~ GrQp Bc3n 5witch B~.SI,^n 23 :PS ~4: ';LF QUT
24 ;P~ '5~ ~2~` ~1? tQ" PQI,Jcr Dctcct I
2~ ;P7 ~13 ~0~ II
Z6 :P. ~ 2> E5U ~ddress 2~ ;
2~ :
2q. ;50GE ~ddrcss Cc~ment - p1n Jut t~oooq? 30 G~T 1 EQU 001lql0~1e ; TuninQ d~'.3 '1' Q 1 '~001` 3I D~T_Q EQU 00000001B; Tuninq d~ta ,n n 1 t;000B" 32 CLKG~T EQU 00001000E~ 5IQSI d31s '1' Q n ~Q00~'~ 3~ LOGQ~T EQU ~IQqr~ ltqB i LQ3d pul-c i3t3 1~ ~3~'0qq4~ 34 PIJRGT~ EQU Q0~1:l0lQqe : PQ~er ~f~ - 1 1 ~1000C` 35 PWFGTI EQU 00001100B : P.~l.,.~er Qn 4 4 ~qqn3~ 3B C~r!L_~ EQU ~lorJqqqllB : r3t~1e Belect ~ Q :.
<000B> 37 5~BL_B Eau 00001011e ; 53t.1. BClcct E l1 3'0QnD~ ~ DETD~T EQU 0q001101B ; ~ e~- -heck Q ~
S 00115 ' 3~ C~BL_5 EQU onqqollne : C3t~1e Eclr.ct E Q E
~'0qqE-~ 40 5~BL D EQU n00qtll0B ~ C~tle --.C I e,-t, 41 ;
42 ;---------- U31i~tl1c c~nt.3nt. --------------------------'.:~ 43 CCI!~IT_P~ EQU 3 : IJ4:B4 Pri,-.rit~J let~cl 44 ; ~~~~~ - - - - - EIJt~ . CQmm3nd -r,r,ct3nt ------------------4S ;GE'~.~'5NT EQU 0qH : Ges~icc cr~nt.r~21 45 ;DEp5t~T EQU qlH Go.:ice di~!213~ cQntr.
- 47 ;EETQ~T EQU Q2H : S~t d3t9 t~- de icc 4~ :PEr~t~T EQU Q3H : Pe3.i d3t3 4~ ;---------- tl~mor~) lr2C. --------------------~--~~---------~~
S0 ;Llbel h~3d 3dd~= 5.-.mmr~nt ~00crl~ Sl PI~GET EQU ~rJH ; 1~l C~2mm3r.
'~0021` -S2 CH~EL Eau ~IH n. 5r!mm~n~
0024: 53 BUP~EB EQU ~4~ : q~ r~mm~n~ ~U~
'00-S? 54 Et~GMES EQU 25H : 134 I:~mm~n~
~00cD~ Q~ Bl,lBPI.~P EQU 2DH : q~ CQmm3r,~
'OY.F` ~6 EU~ !T EQU 2FH 06 5rmmln~
'q0-.13 57 ~FPFOL EQU _1H , 1~. C~mm3n~

APPENDIX B

FILEs DROP~_RST:lJEH~Ph. HEl.lLETT-F~5~hPD: S041 ~ nLl~r LOCPTI071 oe JECT CODE LINE ,r~UPl,E LI~IE
'Q03S~ ~8 DE`/Pl3L E~U BSH n8 CQmmand <QQ~B~ 59 FqR~ EQU ~8H ; 84 C~mmand ~Q ; --- ------- ---------________ Bl QRG nH
0000 15 B2 DIS I , Ci~n3bl~ c~.t int~rrlJ7~t QOq1 o4n9 83 OMF 5Tt~RT : '~4r t~dr-:=
B4 ORG .7H
oOq7 9~ ~5 RETP
BB ; 07?G EH
B. 9MP TIM}NT : TIMER INT.
~:~ _ -- ____________________ ___ Oq99 .Q STt?RT:
,- 1 : .
9099 237F ,2 MQ~ t~,#O.7FH
OOrB ~9 '5 QlITL Fl,t~ : PE9ET PlJL.E Rnp PERTFEP~L PPO~E~ np OOOC 2~FF ,4 Ml39 t~,#OFF~
OOaE 39 .~ OllTL Pl,~ :
OOOF F5 .-. EN FL~G8 : cn4bl~ tl3~s IBF... Q8F
0010 ~5 78 ÇLP fl : F1 -- l~r~ r cQmm4nd hc3~icr ~ t~O ' 0011 35 .9 STAFTl!: Dl8 T5NTI

31 :======= Init,i~li-c -=-============
82 : 04 c~mn3nd t,~ff~r clcar 0013 B826 S3 MO'.~ PO/#BNDM
0017 8040 84 MO't e7'Q,#04QH
8S ;
38 : S4 c~mm3nd t~Jffcr cl~4r OQlZ.B85~ 87 MQV R9,#FqRa4~1 :
00.19 BOFF S8 MQ~ RQ/#OFFH
~. ~9 , OOlB B81C 9n MOY pQ,#nt5H : rcci~tcr b3nk I R4 OOlD B031 91 Mn~ ~RQ,#DRPPC~L : -ct ~rQp poll n4p hC4~i 3i~
92 : f~ t~rrlJFt. initi.3] ~3rt.
OOlF B831 9' M~'J P9,#DPPPOL
0021 BPO.' 94 nU'I ~7~!#.' 0023 BOFF 95 INILP7: MQ~ el20.*QFFH t:r-~ P-~ll M3p initi3li-.~t;.~n.
Q025 18 98 INÇ Pn 002B E82', 9-7 D-!N. P3,1~1ILFI
q~ : .
0028 B83S Bq MQY RQ.#DE.'POL
002~ B~Q8 100 MQ~ P2... #8 002C BB05 101 INILP : MO~ 72B.. #5 ; t!C~icc- P~ll M3p init~i31i~tl~n~
002E BOFF 102 1~71LF5: MQ~ QRO,*nFFH
0030 18 10' I-NC RO
00~1 E8~E lQ4 DJN. R7,1NILP-0033 Etil25 105 DON~ 7'2,1NILP2 lQ~ ;
0035 SF04 10~ 77Q'; P,,#04H : Initi~ i.1r~ P~ trr.
108 ~ r int~rt-ur~ r~u~.ir,~ ~~,4t~ ~ i r 1 09;
00.~2 23Q4 110 MQV ~.#PWPDTn : ~11 c~-:r~cr ~ itch ~ff 003B 14D2 111 C~LL t~LLCNT
003B 2303 112 MQV ~,#C~BL_t~ :
003D 14D2 113 C~LL t~LLCNT
114 ; Mqs~ ~,#Ç~8L_C Ç1c3r Sub-cri7- r r ri4~ 3 -'ILE: ~ÆDP,_F.. T::!EH~.-.q :~EI'L-rT-P~ NPRD: ~,0$1 HE-~ 3~804 3 LqC~TIn~1 06JECT C~DE LINE 5nlJ,rE Ll~lE
1t5 : C~tLL ~LLC~IT
117 :
003F 5454 117 CFtLL INIT P P~ r ~i~t~ t linc~ Initia~ tion I 1:3:
0041 C5 11~ SEL RB0 00;~2 230~t 120 ~O`.' rt,~010 0044 6c 12t ~OV T.~ : Tim~r ~ount~r s~t, 01Oh -0045 8D03 1,.' MOY RS,#COUNT Æ5 123 ~
004, 25 124 E~ TCNTI
0048 45 12S STRT CHT : ==== initiali-o ~nd =======
126 ; -------- _____ -127 :
004't D6R6 128 STFtFT2: JNIBF CONT1 ; IEF ull ' 004e 76S0 129 JF1 ST~RT3 : ---130 : C~se o~ ~sing c-~mm~nd port 004D 22 131 ST~RT4: IN t`t,DBB
q04E 044g 132 JnP STF~ÆT2 ; Error -- D3t3 Comming i-~nc~d 133 :
0050 ~t5 134 STPRT3: CLR F1 : F1 13-~ cls~3r 00'1 2 13S IN tt,DBB : Inp~lt Comm3nd 0052 Fe 136 MO~ R3,a 01~53 03F7 13~ aDD a,~-9 : I- nt~r comman~ is in/31ii .-n~- BT.S .t'~-n ,gr,~-=
005S F649 13Z JC STaFT2 ; ~ input ~ r~
00-.~ Fe 139 YOV P,R3 058 0358- 140 ~DD 4,~COM~tND
00Sta e3 141 JrPP ea Estit~at~ jump 3ddr~3 142 :
00SE 64 143 COMMPND: GB CO~0 005D 67 145 DB C0~2 005E 6a 146 DB COM3 0060 6E 14B DB Cons 0061 ,0 .11q DB con6 006~ ,2 154 DB C0~7 on63 74 151 DB COM8 152 ;
0064 04ZF 153 cono: J~P RESET : r~,-t comm3nd 0056 049~ 154 COM1: JMP RPDL ro3.i pow~r d~t~c5 lin~
on68 041" 15S COM2: JMP STaRT2 : not assign~d 006~ 0464 156 C0~3: JnP CTFC : .-.~mm3nd t~Jn~r ~ -Jon.--:._h;ng~
006C q4G~ 15- COM4: J~P SM7D ; ,s-n.~ m~ss~.ae to d~.-ic~ t~r5Fon500Q6E 244C 15Z COM5: JnP SPC s~l~s-ri~r Fo~ r.~3~1~ -.-n~rol oo. n 0449 1Sq cûn6: JMP 5T~RT2 , not 3s5ign~
00.2 247F 160 -qM.: JMP SDPS : i~t~n~ ilop p.~ll 5-~u-r-~
no74 24D4 161 COMZ: JMP SDEPS : icr`in~ do-~i-o pol I so~ ns~
172 ; -------_____________________ 16' ~ S~ romm.3nd rcspon1t d0.6 E85. 164 CBNT1: Mû~J R0~FBFs4~ c-.mm~r.. i ~ occ~ ,~ei 0u.~ F~ Æ n no-~ F2Z4 165 Je. cn~T~ :
o~J. e 5436 1s., rp,L ÆESP84 00.D 01~9 1s5 JMP ;TQFT~ :
7 ~ .-___.___.. __ ________.
~-0 ~Ji d.~mm3nd rS-spons~
0~!.' ~S00 ~,1 er~rT-: Mn~ ~ oo0H - stat~ 4~ag n~ ~e~y '` 194 . . - l 338043 FILE: DBnF.7 FCT:lJEllt~Pt~ t~ElJLFTT-pLlr-~pD JQ41 t~S:~'mt'l~`
LrJC~rlOI~ 08JECT ~-OBE LINE 5~ P~:E LlNE
OO-71 90 1-2 ~0~ STs! a 0082 0449 1- J~P STGRT2 1,74 0084 BB.6 1,S CDNT, MnY FO,#SNDMES~I :
OOa6 FO 1.-6 ~0~ a . 4Pq 00~7 F24e 1,. JB, STt~RT2 : n4 r~sponso i 5 not ^xi~t .l~oturn~
008? D2,F l.B JR6 5ThRTS : n4 ~-.p~ns~ is not o~i3t~r~o50t ~t.;t~Js ~ ~otllrn 1-? :
OOBB S41D 13n Ct~LL RES04 ! ;-n.l t,ct D3t1 F~0.-~3s.0r IB1 :
OOSD 0449 1S2 JMP STts~RT2 : roeIJrn main routin~
tB3 :
1~4 :~***t.**.t**~****~***k**t*~ *t-tt~t*~.t~****~*t.~*t~ ~t***~t-~t~ t-~*.~*
1~5 :****tt ****#*******~*~*~ ** t*~tt-~**t I-*****.~-t~ ~t-~t~*~t~ ***
OQ8F BaOO 186 FEEET: MOY R-~#QO : ,~ni ~ Sns~ ~0 t~-r~ r~~-e.
OOQ1 BBOI 187 MOY R3,#Q1 0093 34FC 1B8 C~7LL PESOUT
OO?S 0411 1Sq JMP SThRTO : ===~ sot =====
1qn : ##*~ #t 191 : 1 Rr3d poLl~r det~et lin~ ~ R~ i ECU t^dclress 00^7~ OE 1qc PFOL: ho~r a.e6 p.~LI~ ot,~.-t, 3 ~ ~ n 0078 S30F 1B3 hNL a.#OFH
ooga aB 194 MOY R3~t~ :
OOQB Of 1BS ~OYD q.F~ prJ~ r cl~t,e.~t X ~: ~ 4 1B6 : : 5 ECU t~d~irGss OO9C 4, 19, S~aP t^~ :
009D 4B 198 17PL a.P3 : ti -- p.~UGI' d~t. l! ~ 5 OO9E B820 1Bq MOV PO~#F',IPDET
00~0 ao 20fi MOY QRO,d 00~1 B~01 -'501 MOY P2,#01H
00~3 BB02 202 . MOY P3.#02H : 2 b~t~ s~nd to d3~.. 3 proe5Ssor ~t-- 2~3 :
ooas 34FC 204 caLL PESOUT : e,~n~ ~"~ B3t,3 P~oe~s30rooa7 l~at7 20S Cts~LL FS : ~311 sIJbseri~ors poI~r ehG-k ooag 0449 206 JMP STaRT2 s~t, poI~or ir-t,r-st lino 311 h~gh~
~0.7 ;
20~ :
OOaB B820 208 PS: MûY RO,~PIJRBET : tr~ I' Su~ssri~/c~ pol~-r -n OOfiD FO 210 MOY ~,QRO
OO~E 43C0 211 ORL ~ #lloool~onE : ; Fc~r ~-J~Serib~- t,h~t po~ r~d of r OOPO aa 212 MOY R~,~ - :
OQB1 S4C8 213 Ct~LL PWRCHK

215 : #* e 2tB i f Chango T~Jner Fr~ouone~! Ch3ng-- !
2t .7 :
OOB4 B821 218 CTFC: MOY RO~#CHdBEL
OOB6 BBO~ 219 MOY R3,#03H
OORB ~4to 22Q Ct7LL INPCOM : 5~,~rod ~ ,; S -c,n;~rt,~r ~u~
008a 23FF 21 MOY a~OFFH
OOBC DB 22 ~RL a,R3 OOBB C64D 223 J~ STaPT4 : E~ or - ir,v,,e 13t.3 is in~,lid on-.
.24 :
OOBF B821 22S MOY RO, #CH~NEL
OOC1 FO c'6 MOY a.QRQ
OOC2 0 F~ -2. ,iDG ~.#-06H
OOC4 F649 2cs .JC BTaRTc : Erl-or - C~`OV r,u~h~r is i~v31id.

~ ` - 195 FILE: DROF7 RST:UEH~FR HEI.ILETT-F~ PG: 3041 ~5semt 1'~` 1 3 3 8 0 4 3 LOC~TION OBJECT CQDE LINE ,OIJF5E LIBE
._9 ;
00C6 5466 23q 5RLL TQNE~ : 5hanQinQ frsclucnc:
00C8 BR03 31 MQV R ,#Q3H
O0CR BBg2 23 MQV R3,#02H
00CC B8.1 2B3 MOY F!0,#CHRIIEL
2 4 :
QOCE 34FC 3i CRLL PE8QIJT ; Eend tCI Gae3_Procc33c~r rc3~.. n--~ - ~1. -23~ ;
00D0 0449 2 . !MP STRRT2 : rrt-Jrn ~3in ~.-.-Jtir.r 23~ ; --------_____________ 00D2 3C 240 ~LLOBT: MCYD F4,R : S-lect 6 sub3critlcr oon3 BRC0 241 MOV R2,#0COH

OOD7 83 43 ~ET
44 :~ 4 #
~4~ n~ Mc-33~Q~ t-c~ GC ic i 00D8 S44C 246 FIBr/3~: 5RLL I~RIT_24 ; if 34 5MG i3 :~i3t~thcn 3~r~d i t--. G,t.; Fr~-~c=-3 ~-00D~ B826 24. --.MTC!: MOV F0,#5Nr/MES+I
00DC F0 74~ MQ~ ePo ~cc th3t t~uff~r ~or n4 cc~mmar~ mFt 00DD F2D8 .49 Je. FIND84 ; if ~uffer ~5 ful I ~then t-hl-: routinc l~ait 00DF D2E3 c~Q 5MTGQ: .!B6 S~TP1 ; f~r scndin~ t~ deuice t! int. roU~.inc 00E1 541D Sl 5RLL RE8Q4 : Scnd Q4 re3pQn3c- ~Q Gat3 FrQccssQr-- ~2 ;
QOE3 Z310 ~ MTrl MQV ~,#QQQtnqQQe ~ct. Q4 cQmm3nd t~u3 00ES 90 .54 MQV STS,R
00E6 C8 SS DEÇ PQ
00F7 BB02 ?~f, MQY R3,#00.H : inF~ut ~ b~t~ ~-. de~icc ID ETTE 5QIIMT
00E9 S410 .5. ~-RLL INFCQ~ ;
00~TB FB 2S8 MQV ~,F3 O0EC D3FF 2~8 XRL R,#QFFH
00EE C64D 26Q J? 5TRRT4 -- . I :
00F0 B826 62 MQV RQ,#SNDMES~ e the numter o~ 3end bVtc3 00F2 F0 _63 MQV ~,ecq : f.r at.3 pro~r~3sQr 00F3 ~B 264 MQV R3,R
~65 ;
QOF4 03F9 2C6 RD~ ~,#-7H : 1~ eiTE COU~T Is Qre3ter than 6 ogF6 E6FR .67 QNC ShTD4 ; then.inp-lt d3ta ~.~as ab~rted .
00F8 24?8 268 JMP SMTD2 ; 3bor~, c~m~nd illiQal rrturn 26~ :
00FR 18 270 5MTD4: INC R0 i input mess3Qe ~4ta QOFB 541Q 2Fl CRLL INPCQM
2.- :
goFD FB 2.3 MQV ~,R3 ogFE D3FF 2 4 XRL R,#OFFH
! C6.R 275 .'2 STRRT7 Z76 ;
27 ;-------- ~ub command set ro~in-0102 B827 278 MQY R0,#5NDMES+_ ; ._omm3rd ,addrcss 0'04 B924 2?9 MOV Rl,#SUBME-~ Jb. nes~e f.. ~- lntr rQutine 01g6 F0 2~0 ~OV ~,eR0 0107 53F8 281 RNL- R,#0F8H

oln~ 3 ~R
01OB 7 .84 RR R
010C R~ Z5S MOV R2,R

, 196 FILE: DROP7_FST:UEH~F~ HEWLETT-P~OK~FD: 041 hs~mbIcr 1 338043 LOC~TION OB-JECT OODE LINE ~OUPOE LINE
010D D31F 27i6 ~;RL ~,#lFH
QlOF C62D 2-7.' .'~ EXP~ND
0111 F~ 2B8 ~QY ~,F2 d It2 97 2~9 CLR C
0113 67 290 RRC ~ :
0114 0335 2ql ~Dt' ~,#FN~TBL
011B ~3 'q2 MOVP ~, D~ ;
011-~ ~1 793 MOV QRI,~ ;
0118 F~ 2B4 MOV ~,R2 011~ 12'~1 2~5 . JB0 OGGFNC
011B 230F 29B MOY ~,#OFH
01lD 51 29' ~NL ~,eRl 01lE ~1 2~ MO`,~ RRl,A
2~9 ; - ---__-_________ 3Q0 ;
01lF B~26 301 SUE~5QM: MOV R0,#5NDME'~I :
0121 F0 '02 MOB ~.QP0 0122 43C0 303 QRL ~,#OCOH 6et n4 Puffer tull f 3cti:C
Q124 ~0 304 MQ.' eR0,~ :
~05 ;
306 , count do4n R~ ~ O~7un~ ~im~ ~--hich n4 c~.~n.3r,d oclJrcd 3~7 , 0125 FD ~08 MO~/ ~ F5 0126 962~ 309 JNZ SET_F5 0128 BD04 310 ~O~ R~#rol!NT R~
012~ CD 311 SET_F5: DEC P5 312 :
313 , 0129 0449 314 IMP ST~PT2 315 ;
012D B102 31E ENP~Nt: MQV QFI!#02H e-p~nd comm3nd i~ f i ed .
- 012F 241F 3t. 0MP SUECQM : sr~n.i t~ ~C~ C
0131 23F0 ~9 or~ F~lr:: Mû'.' ~ F0H
0133 51 319 ~L ~,QRl 0134 ~7 3.0 S~d~P ~ ;
0~3S ~ 321 ~OY eFl,R
0136 241F 322 .'MP sUBCOr 323 ;
0138 B040 324 S~Tr.~7: MOY eR0,#40H ; ~ct ~tatu, ~utfcr c~mpt~J
013~ 0449 32~ .'MP ST~RT2 326 , 322 ; ~ind of function dcfinc ~,ablc 328 ; ~-umber of comm.3nd 3re 3~ foIIo~d 329 : I ---- dc~ice contorI
330 ; 2 ---- ~nd de~ic- data 331 i 3 ---- rcad de~-ice information ~32 ;
333 ; ; cQmmand numbcr 013C 23 334 FNOT8L: D8 23H ; 1!0 013D 22 335 DB 22H : 3,2 013E 22 33B t)e 22H , : ~.4 013F 21 337 De 21H ; 7,B Sr~Cci~icd 0~40 32 ~3~ ~8 32H ;
0~4~ 32 339 De 32H ; e, ~
0142 11 340 De IIH : B.O
0143 11 341 t~B llH ; F.E de~.ire }nnt.. r 0144 11 342 te IIH ; 11,10 FILE: DROP7_RST:UEH~F~ HEIJLETT-PaSK~PG: 5041 Q~22mbl~r LOCaTlON OB.JECT CODE LINE SOURCE LINE
Ctl4v Z2 34v Qe 22H ; 13,1, 0146 22 344 DB 22H ; 15,14 ~end d~t,a n to de~ice 0147 Z2 34~ DB 22H ; 1.-,16 n = I to 0148 22 346 DB 22H ; 19,18 0149 33 347 De 33H ; le, lt~
014~ 33 - 34v ~B 33H : ID.IC r~3~i dS`~icc inform3tion Q14B 33 349 DB 33H ; IF,IE
350 ; ot.hcr ~en~ ~3 }51 ; ##~ ~#~#
352 ; Sub~cri~er pQ.~sr c,~ntrQI ., ~u~cri~sr S~itch C~ntr~
35~ ;
014C B82D 354 5PC: MOVR0,~5UBPWR
014E BBQl 3$5 MOY R3,#01H
0IS0 5410 356 Ct~LL l~PCCtM ; incu~
.~7 ;
0IY2 FB 3S8 MQV ~,R3 0153 D3FF 359 ~RL t~,#~tFFH: Ch-cl~ Err~r indicit~cr~
015S C6 a 360 ~~ STt~RT.
3~1 ;
015.~- B82D 362 MOY RQ., #sl-lepL!p 01S9 F0 363 MOV t~,eRt~ : -015a ~307 364 t~NL 1~,#07t1 Ol~C ~B 3v5 MQ~.~ R3,t~ : BrQp Num~er 015D PC 366 . MQ~ R4,~ . : .,-OlSE F0 36 MQY t~,QR0 01~F F272 3v8 .,Ie~ SPCQ : Qie 7 equ~ o~!c-r ,n n- F.~,.!2,~ f 365' ;
0t61 S4BC 3 0 SPCI: r~LL Pl.~RCIFF
3~1 ;
3~2 , 0163 3 3 5PCCnM:
0t-6~ FC 374 MQY t~,p4 0164 aB 3r7S MQ~ R_,~ Pe~t-~re 5~n~sr~,sr t~umt~er 016S F0 3~6 MO~; ~,QRO
0166 D276 37 le6 55CI : ~it- r equ 31 1- sl. c3~
. 3 B ; Q- =el. ca~le e 016B 54CQ 379 SSC:0: Ct~LL s~e~LE~ ;
30 ;
Q16a 3vl 55S'-011:
v2 :
016a Baos 3av MOYR.,#05~ 5cnd rer~on~s Q~
016C BB02 384 MO~R3,~02H
016E 34FC 385 Ct~LLRESOvT ; RQ -- SBePIlR
0170 0449 386 JMFSTt~RT2 3v7 ;
0172 S4B4 3S~t sPr~ 5~LL PWROh 3~0 :
0176 S4S4 391 SSCI: S~LL C~BLEB
01~8 24vt~ 392 J~ SSCCC'~ ;
393 ;-3~4 ;
017~ 044D 39S ST~RT7: J~P ST~RT4 396 ; ###
397 ; ~ Befine Drop Poll Sequencs 017C BBFF 399 SHC;F~L: MOY R3,~OFFH
. .

FILE: r7RrF. RBT:I!EH~R~ ~EI!L TT-P~s~FP ~11 a ~cmt 1 :r 1 3 3 8 0 4 3 LOCRTI ON OBJECT COC!E LINE SOIlRl-E LIME
017E 83 40q RET
4n1 :
017F e831 4Q2 SDP : MO~ R0, #ClRPFOL
01~1 eBo3 403 MO~ R3.4Q3 404 :
01~3 34?4 405 C~LL CHaNGE
4~)6 :
01:~5 Fe 40~ MO~' a.R3 n186 D3FF 408 ~RL a~#oFFH
0188 C67R 40~ J STaRT7 410 , 018R eRo7 411 MO~ R2~#07H
018C B801 s1- . r10~,~ R3.#01H
018E 34FC 413 C~LL RES0UT
01~0 04$~ 414 J~P sTaRT
415 :
01~2 0459 41t~ ST~PTB JMP ST~PT' 41, Q1~4 D6~4 418 5H~NGF J~IEF CH~NGE Ch~n~ Dr~p C~ C f~rtn.3t 0196 67C 4~ ? JF I CHGF~L .
01?8 22 4~J I~ ~c8e 01~? ~0 4:1 MO~ ~R0,~ :
01~R ,2B5 4c. JB3 NOFOL
4c~ ~
01~C 47 424 P.ETPOL ~ P a 01?D 18 425 I~JI R0 019E ~o S26 11O\ ~R0.R
4c, :
019F lB 42~ INC F0 o1no EB~4 42? C~JN_ F3.CH~NGE
~3Q i 01q2 D6~2 431 FOLlqOL J~IIE:F FrJLMoD
Ol ~4 767C 432 JFI CHGF~L
01R6 22 433 I~ ~,D88 ~34 -01~7 2r~ 435 ::CH ~,R2 01~8 8~?31 436 ~113~. R1,#DRPF13L
o1~a F1 437 ~ "~Pl 01~B ao 43-~ r1n~; 3PO,~ :
Q1~5 2~ 43? :CH ~.R2 440 : -01~D 34C? 441 C~LL SETR7 442 :
01~F C8 443 DEC RQ
~1e0 F0 444 ~10~ F~ :
ole1 4380 445 OFL ~.#80H
01B3 ~0 44~ M0~ R0.~ :
44~ :
01B4 83 44 CH5E~D: RET
44~ ;
S50 ,:
0185 ~h 451 ~ Pl~L: .~C~ ~,R
01B6 Fe 452 MO\: ~,R
Q1~7 D303 4~3 ~RL a~#o3H
Q1B~ C6C1 454 J2 FETsTp 4S~ :
01BB C8 4~6 C~E5 R O

FILE: DROF f2~5T:UEH~F~ HElJLETT-r ~CKf~RD 8l~41 ~-s nt~
LOCf~TION OE3.JECT 5DDE LItiE S~ JPCE LINE
01BC Ft 457MO1~ ~,ePo 018P 438Q 45. nRL ~ #-OH
018F ~0 459 MOV t~R0 ~ ;
4~0;
01CQ 13 421 IHiC R0 01C1 2~ 483 PET TF: VCH R,P' 01C2 249C 4,4 iMP RETPOL
4~ i;
4~2;
01C4 F1 4~2. Pt~DP8N: MOV ~ 3P1 01C5 S3DF 465 ~NL ~,#110111 il e 01C~ ~1 46? MOV t~P,1.;~
QIC8 83 4'Q PET
4.1:
01C9 D3FF 4'2 SETP~; XRL ~#OFFH
Q158 B~lF 4.3 MOY Pl #31 01CD 96C4 474 'N- RNDP8N
47S;
OtCF Fr 4.~6 r~if~ ePI
01D0 432r! 4~7 nRL ~ #001Q000QF
01D2 ~ql 473 MOV ~P1,~ ;
01G3 83 . 47g ET
430;
4~
482:
4:~3; #y ?t ~y ###
434; ~ D~fin D~ i c PolI n5~5n~c 4~5:
01D4 D6D4 48~'2 SDEPr-: 0NISF SDEPS
01D6 76FR 43~ .. 'FI ST~PT
0tD8 8833 488 MQV RQ #DE~POL
01D~ 22 43g I ttj ~ ~ DE~5 - OlDB i307 490 ~NL - ~ #0 H
01DD fi8 4gl MOV P3 ~ :
01DE ~C 492 MOV P4.~ :
01DF C6E7 4~3 02 SDEPS1 4g4:
QlEI F3 4g~ SDEF~r!: Mn~ ,~ pn 01E2 030S 498 ~DD ~ ~n5H
01E4 ~8 4g-- M0~.~' R0.1~
01t5 EBEI 4g8 D '~1. R3 SDEPCQ
4gg QIE' SSQ5 50q 8DEP,I: MOV R3 #I~SH
01Eg 541Q 501 S~LL INP50M
01Ee F8 502 MOV ~ R: ;
(!lE5 D~FF 503 XPL ~!#nFF~
01EE C6F~ 504 J~ ST~PT<.
50~;
01F0 BfiQ . S06 MO'.l P2.#03H
01~-2 BP02 5Q7 MOV P3 #0 ~ :
01F4 58Q4 503 MO~t P0,#04H
01F6 34FC S09 C;iLL PESQUT
01F8 0449 510 .IMP 8T~PT2 511 ;
01F~ 044D 512 ST~RT-: 0MP ST~RT4 513 : #* ###* #

F}LE: DRnP~_~ST:IJE~P~ HEI.!LETT-P~-C~RG: 8n41 ~r-nt~I:f LOC~TION OBJECT CB~E LI~1E 5nI!RcE LI~IE
514 ;------- Fl~spons~ ~3u'pJt F~:utiro ------------------------------OtFC 86FC 515 PESOI!T: JOEFRE,quT : Ch~c~ Iu~ ~uf~~r full ~
OlFE 95 516 CFL F0 01FF F~ 51. t1C~J ~ R2 0200 02 518 OUT CBE.~ u~put .C-mn,r.i 0201 C8 520 r!EC ~.3 0c02 FB 521 MO~ ~ R
5~2 :
0203 C60D 5~3 J RESE~C~ i C.~mm3rI~ .r,l~
524:
0203 860S S2S RESC~IT: JOEF RESCNT
~207 85 5c6 CLR Fn 02nB F0 S . MO~ ~ QRO
0209 02 528 l~UT CBB~ t I~UtpUt . ~i3t 3 .,,, `
020~ 18 5~ I~C R0 0-06 E80E 530 CJN7 R3!RESC~II
020C~ 83 531 FESEBr: RET
0cOE 4405 532 FE8C~II: JMP RESCt~T
533 :
53 4 ; -- -- -- -- -- -- -- -- -- -- -- -- --_ _ _ _ -- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 53~ :------- input ._Qmm.3r-~ 3n-i i3t 3 S'~;;
53. ; RI3 ----- r~p.~n r... C!3t 3 h~.3.~ 3-idr - -~
53~ r~ ----- B--~3 .t irrut~ i.3t3 0210 D610 39 I~IF--OM: JNIEF I~P OM
0212 761~ 540 !F1 I~PE~C : -.7mmin-~ i3t.3 i~ n.-.i. ; ~.~rm~r.. i OZ14 22 5s1 IN ~,DBE : ~ 1 inp-Jt 0215 ~0 5s2 MO~.J 0~R0.R . Sf~r~ Cl3t3 0216 18 5$3 I~IC RI~
0217 EB1 0 '514 CJ~J7 R3.I~IPCI~M

02tP EeFF 546 I~lFE~/r: t1O~.J F3 snFFH : F7=nft~h 021C 83 S4. PET i.3~3 ~3il~Jro 548 :
54? ~
550 :
551 ; i34 rr~p~n~o rutF-Jt r-utin~
55c :
553 ;
3c1G F0 554 RESIl4: MO~J ~.l3RI:l - :
0clE C6-cF SSS JZ 8C1 : or-r-;r m~~~
5~ :
55~ ; ~C~ ~ #-.7 558 JC C-04EN~ :
SS? ;
022'1 F0 56I1 Mq~. ~.eP0 0221 0303 561 ~GC h.#0.H : ~ ~o::ir~ IC! -.3n,~.~r,.i .~,T C 56-022 ~B 563 SC-: MO~; R3 ~
0224 B~04 564 MOY R~.#04H
0226 B825 565 M~3~. R0.#5~1CME8 0228 34FC .566 C~LL FESOIJT .-c.-n_o 56~ :
022t~ B826 568 so4E~lr~ MO~.J R0.~5~C~ME8+
02?C B040 56? MO~ l3R0.#40H -I~3~- lIj r-~~c.~n5~ r~r n X~ i,t~S
O ZE 83 5.0 RET

FILE: n~Qp7 P~T:UEHar~ IEm ~T~-p~rliap~ 14l a .-n~i r LOCPT IOH 08JECT CCDE L INE ~olJPÇE LINE
~ ;' 1 5,-~ :
02,F 2304 S,3 ,Gl. Mo~J a.#O04H : Err-~r- m--~ P
0231 4423 57 4 JMP ib2 : ~ ,3rrl~ 3~ :34 O~ ,lm3n~1 3 e,75 ;
S,6 :
~ FG~p,~n r~ ~4 s-~mtr,-, 5, ,OJ
0233 S-q FE~_E4:
0233 B85. 5E0 MOV Rq, #FO~'o4+ 1 023S Fo S81 ~qO~ 4~eRo 0236 F24, SE2 JB7 END_.4 S~3 :
023E C64E 5E4 RESP~i: J, FS4F4L : 1 3ll~ t m3in Ic~ r ~- ~n!r,.~.
sas 923~ F0 5~6 MOV ti.. qFo 0236 0303 sæ7 ,~c~r~ ~ ~ #03H
023D aB sæ8 MO~J R3,4 -t~ E~;TE Ç~IJNT t'br ~n,i 5~ :
023E C8 580 F84EPF: ~EC RO
~q~ : .
023F Ba64 S42 M0~ F2,#34H
0241 34FC Sq3 C4LL FE301JT : P~-p~.n-, q~Jt, S'~4:
0243 8857 5~S SE4ENG: t10~ Fl3.#FOP4+1 0245 BOB0 5q6 tqO~ e~o~sQ:3l3H r~t E4 ~ mrn.3r,i 0247 83 S47 EMb_~4- PET
5,qg :
02.~8 8Bo4 600 F~4FRL: MOY R3.#04 : if ~.~LF ~mm~tnic3t,i~n i- ~-3il~
024a 443E 613l JMP FB4ERR ~n.i ~.h3t, ~ on~iti.-n t~ 3t~
~02 .
024C 603 ~ r T 34 024C FD 6 04 MOY 4. R5 024D 8653 605 JN- IJFtIT E~D ~ FS = n th~n l~ - :34 t~Jf~}-~
024F 5433 606 Ct~LL ~E~_84 ~n~1 ,.4 ~_~mm3-"i ~' q-~51 8G03 6tl7 MO~.J PS,#COU~lT_Fe : ir,.t~ FS -m, 0253 6138 l~lhl T - EMC~:
o~S3 83 60q RET
610 : -------__------_-.___________._____ 0~54 B820 611 INIT F: ,tO~' F~3~#P~!IFs~r~ET r'.~ r [-~ t -s -t, I i n~ i t i ~ l i i~ i: -Oc56 Bl)C0 61~ MOY CFI3 #oçr!H
025E 144B 613 Ç~LL PE0 31 t -l~tlJ~r i ;~t~ ~ p~ r ~i~t~
025~ a3 614 PET
~1S;
616 ======-==~ Ch3nl~ t ,~n.:~r'~ tl~Jr,t~=r tr, t~:t, p~ n ==~ D==--~17 :
61~ ;
O~YE E~FE 618 EIT-.-EL: M0~ R2~#1tFEHFs: r,-.~p qr Ç,.n~ t~
025G FE 620 MO~.J 4,FF3: F_~ E:it~ p3tt~rn ~:4~ L.~IW ' 02YE C665 621 J2 COM0~.:3m: C~n~ rt,~
026n Fa t62, MO~ c ~ o 0261 E7 623 TUNLPl: RL 1^~ :
0262 EE6 l 6Z4 DJN. R3, TUMLP 1 0264 aa 625 ~o~ ~c.
026S 83 626 COMO: FET
~7 :

~ i 202 - - -FILE: CJROP7 P8T:IJEH~P~ HEl!lLETT-p~cr~RFcl: 81341 ~:~E:mt,I2r 1 3 3 8 0 4 3 LOC~7TICN OFJE5T CODE LI~E Bt31lFCE LINE
~:~ ____________ ___ 62~
530 ,: Ch3nq~ Tur.or f ~- o,~ .
6.,1 :::
f3c: :1~ F~:i,t~r .~33: FQ ---- In~ t.~ Charn~ }mm~n~ n~r. ._.. !~ ~n,~ ;
6-.4: F --- 5~n:rDrt~r -~lc 6.,5 ; F-. --- W.~.rk in-3 6,f, 5.,, 0Z66 B3 1 63q TIJilEF: MOY R0.#111bNE~
0268 F0 64Q Ml7Y R!r3pl7 : 13F0 -- C:n ~ n~Jt,b- -02~9 bB i541 MC3Y F-.4 fJ4Z:
025t~ 545B 643 r~LL eIT----EL
644:
026C E823 645 MOY R0.#CH~q~lEL~ :
02hE BB02 64B MOY P,.#0 : I~Fc~ 3ln r~ nt--t- b~t.-02 '3 548F 54 TU~ILF: Cf/LL GaT13lJT
02 2 E~. 0 648 GJN_ F-~!TuNL
f.4 0274 F0 650 MQ`. b eF0 . It~. rt .~r,~ h lt ir, iiF
0Z75 E; 651 RL ~ :
0Z76 b0 652 MOV qP0.t~ :
f~53;
0Z7- ca 654 ~EC P0 : 3F rl -- 11~ir, 5.-.1JntC-- ~' 02,8 BeO8 6'5S MO~ R3,1~178 0Z b 54~F 656 TlJNLr_: C~LL C4TOIJT
027C E8~b 657 GJ~_ F .TIINLP
f,S~:
027E 18 653 Illl: Rlj 027F B8r75 6f,r~ MO'r' F-.~to5 0281 5.8F f61 Tl!~ILP4: rRLL D~TOIJT ;1.!.311 ~ C,~IJrlt~
0233 E881 662 CJN~ F3,TIJNLF4 66.~ :
02a5 Z30R 664 MO~r b.#LOCCRT L~3-3 plJI~
0Z37 54R5 665 5~LL PIJL:E
6f,f.:
Q28~ 2301 667 MO~; ~.#DaT 0 : l:l~;r G;'3 02813 3C 668 MOYC- P4,~ - :
0c3C 74bE 66B 5bLL 8ELECT
02aE 83 6~ 0 FET
67~ : -- -------- ------_____. __.________ 0ZB7F ', 672 Cf~TOUT: 5LR C
0Z8q F0 6~3 llOY ~7,t3F0 0~1 F, 6. 4 CI':LE'3: FLC ~ :
0Z~2 R0 675 MOY rR0,t.7 02'3 2~0j7 f.,t I-IO~. Iq.#CaT 1 '3 '5 3C 677 MCrC P4 b : C 3t 3 ::~ F-lr-,~' i -r _-' t ,' 3 0c~6 F68B 67~ JC Gt7TR1 0c~'8 Z307 67'' MOY t-7.407H 'f 3l~rlJt~ ~3~ 3 i- 1l 0c7b BC 6:30 aNLC P~.b : t~,~r. in.-~ t. ~ 1~'3681 ; I-l t r~ C o ~ t ~- .l~tc.. l 1 0-.?B FR 68Z GQT41 MOY R!FC . ~':,elc-t hi h 0c9C .:8 683 OIJTL P1,i~ :
0c?D c3FF 684 rlO. R,#OFFH

,~ ~ 203 1338()43 FILE~ DROP7 I?ST:CIEH~qF~i HEwL_'T-L~5Ct ~FB: 3011 ~sscmt~l~r LOC~TIO~I OB JECT COt`~E LI~IE 3~ JPI5E LINE
02qF 38 ~8 i QUTL Fl "~ : -.CIC5}t LCIJ
~q~;
0ZQ0 54~3 '537 Ç~L ç~Lor K
02~2 33 68~q, r~ET
~3rJ --_____-___---------______,._______________ ________________ __ , 02R.~ 2303 ~Bl Sl l'Clc.: MQV ~.#rLt~r~ T
Q2fS 3C 6q2 PUL.E: MQVB P4,~ i 1- cl Hi~h 021~6 F~ 633 MQY ~, R
- 02t~7 39 684 QUTL Pl ,~ : :c Ic-_~ hi~h 02h8 23FF ~BS MOJ ~.#OFFH
OZ~ 3B 6B6 OUTL P l, ~ c I ct I
ii~7:
02~B 23û7 683 MQV ~ . #0.~H : 'i.~ L~
02hr, ~c ~q ~itlLr! P4 "
02~E F~ ,00 3EL--fT: MQY ~,P~ : S-l-.ct h 02f F 3~ . 01 OUTL P t . ~
0230 23FF '02 MQY ~,#OFFH
0.'`2 3g 5 OUTL Pl ! P '--C l }t l~
02~3 ~3 . qS FET : -70.3 ; ------------ pCl~ cr ~ C:~t.I- . P~,"~}~ }h~C~ ---------~--~-~--02B4 230C , Oi; PIlFQtl: MOY ~.#PI~IPBTl :
02tt6 5 C 7 0 7 C ~ S l! M M n ~ r~ P ~ . H
. 0~;
0c277 '4~iB ~08 r~LL E~IT3EL !ET F~ --- ~.. r~.. C~cr l~.~n~ cr 02B~ 54~E 710 C:~LL .~ELEr T

02BC 230 1 .5 12 Pb!F~!FF MQY ~,. #PI.IPL)TO
02i3E 4486 . 1.5 .. IMP SOtlCOM
714;
02C0 2303 , l e; ChBL ;1: MQY ~, #C~BL~ -cI: -t PF c~t~lc Q
02C2 44B6 ,lc OMP -ONSOM
;1.;
02C4 230EI . '3 C~E5.LEE~: Mr~ ~,#C~E5L_B "Ic,~ pF c~t~ B
02C6 4466 . ,18 JMP SO~ICOM
.2Q ;
02C3 230D - I pLJprH~: MC5~Y l~,#ETB~T : P5-.-c5r Sh'}l 02C~ 3C 2-2 MQ~J~ P4~ ~ :
02CQ -4~E .'-3 Ç~LL 3ELECT
02C~' 33 '24 PET
~ 5 ~ ~ ~ - - - - - - - - - - - - E ~ r, ~ - - -- - - - - - - - - _ _ _ _ _ _ _ _ _ _ . _ _ _ . _ _ _ _ _ , _ Err-3rs=

~ ~ 204 1 338043 ~2LE ~ KI:SHIGI ~EWLETT-~OK~RG: 804~ ~cs~mbler LOCPT20N OBJECT CODE LINE SOU~CE LINE
1 ~8Q48 2 ,La~t Ver.(~

6 :
7 ; Drop Processsr ~ 8042 ' 8 :
9 ; timcr interrupt rQUtine. v~r 2.2.1 10 ~
11 ; ~ Hot ver. ] I 04_~n by ~ideo ihi~ihara.
12 :
14 ;
lS;
17 :".`~ `~`s a : N~ --- Reaister bank t --~
1 g ;

22 ,~`~ **** RO : Working r~-sl=ter. *~*
.3 :~
24 ;N~ ~***# Rl : l~1orkin~ r~siSter. ~* `~`.
2~
26 :N~ #~*** ~2 : Data ~bit~ -ounter. **** `N
27 :~"
2a: NN **** R3 Tr~r,~mit ~.r r~ceive data buffer. ~**** N;
Z~
30 :`~ ****~ R4 : Currer,t ,CCe5C drop ~ap address. ***~*
31 ;~
~2 :`~ *~*~ R5 : Curren~ ~~ce5~ de~ice map address. **~** `.;
33 :`~
34 :`~N ***~ ~6 : ~LF fl3es. ~***: NN
~5 :~
36 ;N~ :bitO~ = ErrQr counter 0. N~
37 ;~ -38 ;~`~ :bitt) = Error counter 1. NN
39 :~`~
40 :~ 'bit2' = Error counter 2. ~`~
41 :~N
42 :N~ ~bit3~ - N.~ used. --- NN
43 :~ }
44 :N~. .bit4) = --- N.~ used. --- N`~
45 ;"~
46 ;`~N 'bit5~ = --- N~ u~ed. --- `~

48 ;~ ~:bito' = ~ fl~a.
49 ;~"
SO :`~N ~bit~ = --- NQ UC.-ed . --- N`~
S1 :`~ ' S2 :`~ *~** R7 : Pollin~ fla~ N`~
53 :`~`~
54 N~ ~bitO~ = P~turn ~ait ~la~
55 :~
56 ;~ bit1~ = NQ reguest flag. N`~

FILE: ~I:SHIGI HEIJLETT-F~CK~RD: 80~8 ~s=~mbl~r LOC~TIO~ 08JECT CODE LI~E 80URSE LIt~E
-58 :".\ <bit2~ = Onls~ 04 fl 39 . '`.

60 ~ :bit3~ N~ uce~
61 :~
62 :`~ Cbit4) = R.R or pr i c~r i t ~ f I ay; d~: i ,-o ~3 :"`~
64 ;\`~ ~bitS) = R.R ~r pri~rit~ fl~etdrQ
6S :~
66 ~ bit6) = Firct drop ~el~ct fl3c.
67 ;~
68 ~ bit,7- = Response fl 69 :~
~1:
72 ;
73 ORC 0,H
74 :
7S ;~ t~ tt~ tt~tCttttttttt 77 :
78 ~ TI~ER INTEPPUPT ROUTI~E~ ~
79 :
8Q :
31 :

~3 :
~4 ~ ]3~ C~tttt~t[~t~ttt~t~[~ttttttt[rtt[
8~ : ~
a6 ;--------~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~7 :
~8 :
<0024> 39 ~DMSGK EQU 24H :Su~m~s~aQe for d~ r~pon~.
90 : ~C~mmand onl~ ,.IR ~r RD d3t3.:
91:
~0025~ 92 SDMSGH EQU ~5H ;04 c,~mmand but~f~r ' It`
93 :

<0026> gS SDMSG1 EQU 26H ;0~ command buf~r ~ t~ .-Qunt. 96 ;
g7 ~0027~ 98 SDMSGC EQU 27H ' ,04 c~mm3nd buff~r ~ mm.~r"~.
g9 :

<Q031> 101 DR~P0 EQU 31H ;D~c.p pollirQ mac~: 2.
102 ;
103 ;
~'0036S 104 DRM~P' EQU 36H :D~or polline m3p ~ 2.~ ' 1 0~5 :
106 :
<003,'~ 107 DRM~PH EQU 37H ;tirQp pollinQ m3p ~ C.H i 109:
<0038:5 11Q DVM1Q EQU 38H :b-~icc pQIl iny m3F ~: I n 0 111:
112 ;
<00-D> 113 't1~M11 EQU 3DH :t)~ ice p~lliny map ~ 1.1.0 114 ;

~ 206 1 338043 FILE: ~KI:8HICI HEWLET~-PACK~RC: 804S 4~-embler -LOC~TION OBJECT CODE LINE 80URCE LINE
I lS;
~Q042 116 D'JM12 EQU 42H ;Device pollin~ m~p : 1.2.Q
117 ;
1 1~;
S0047` 119 DVM1~ EQU 4-H ;Device pollinq m~p ~ 1.3 0 120 :
121 ;
<004C~ 2 DVM14 EQU 4CH :Dc~ice p~lling map ( ~4~n !
- 123 :
124 ;
500513 12S D'~M15 EQU 51H :De~ice pcllirg m3p ~ ~.5 126 ;
1~7 :
~f~0056; 12a P~E84H EQU 56H :84 c-:mman-i butfcr ~ ID.
12~ ;
130 :
C0057~ 131 RE811 EQU 57H ;84 ccmmand Dut-er -. bvte collnt.:J
~32 ~
~33 ;
<0058:~ 134 PE84C EQU 58H 81 ccmm3nd buffer data n

13~ ;
136 :
s005D> 137 TXBUF EQU 5DH ;Tr3r.smis~ e d~t3 b-~ffer.
138 ;
~3g ;
<005E~ 140 DE~PQ EQU SEH r D-vice polling map f 2.N.0 ~.
141 :
~42 :
<0065.3 143 DEMaP EQU 65H :Device polling m3p f ~.N.7 :-.
44 ;
~45 ;
<0067~ 146 DEM~PH EQU C7H ;te~ice polling m3p ~ ~ r~ H ~.
~47 ;
~48 ;
S0068` 149 L~'/1 EQU ~8H :Indire.-t .3idre~sing dat3 t~uffer ~SO;
~ S 1 :
C00~? 152 ~N8P~P EQU ~9H P~ritu flag .
1S3 ;
1S4 ;
CQ06~ 155 POLING EQU 6~H - :Cur~-ent 3c-_es~ ie~-ic~ .ir-:p 156 ; number s~t~ buffer.
1S7 ;
CqQ6E` 158 CtJTB't EQU 68H :B-.Ite count~Cr t'Dr P:-t or Tx.
.159 ;
1~0;
~QQ6C` 161 8f~'~t)RP EQU ~CH t-rop numDer =3--e ~uffer.
~2 ;
If~ ;
~64 ;
16S ;-------~~~~~~~~~~~~~~~~~~~~ ~
~66 ;

168 ;
169 :
170 ; --------________-______________ ________ 171;

-- 207 1 3381)43 FILEs RKI:SHIGI HEWLETT-F~C~RD: 8048 Rccem~ler LOCRTIO~ CBJECT CBDE LINE BQ~JRCE LINE
172 ;~***~****~* INDIRECT ~DDRE~ G RnUTI~E. ****k*****~*k****~
173 ~
030n 2F 174 HETIT: XCH ~,F :JumF~ina a~res set.
~75 ;
0301 D5 1~6 -,EL RB1 ,R~gister ~3nl: _h3nge.
1 7 r7 0302 0305 l,7a ~DD R,#NEGIH :In.iirect 3~dre -in~ j~mF.
0304 B3 179 JMPP eR
180 ~
tal;
1 82 ; ****:~1*******~*******:~*-*:k*:k:k k:k:k*:.:i:k:k*:~:k:k*:k:l.:~ *:~':k*:k:kt~ *-.k:~****-k*:~.
183 ;
1?4 ;~~~~~~
1~5 ;
1~6 ; ### INDIFECT ~GDREBBING T~BLE 187 ;
188 ;
0305 2S2~292B2D 189 NEGIH: DB ~0, ~ 2! ~3, ~4! ~S! ~6 190 ;
191:
030D 3537393B3D lg2 DB ~3, B8.B19.C11.C12,C13,C14,CIS
1~3 ;
194 ;
031S 454749484D 195 DB C16,C17!C1B.C1~!D 0,D21!D22.D23 1g6 ;
1?7 ;
031D 5SS7S95BSD lg8 DB D24,t'25 ! G26.ti .!G B,E2g,E30,F31 lgg;
200 ;
201 ; ### #
202 ;
203 ; ----------____________________________ 20S ;
206 ; S~SStSSSSSS JUMP T~BLE F0R TIMER INTE~RllPT. SSSSSSSSSSSs 207 ;
208 ; I N D E :
209 ;
Q32S 649R 210 a o: JMP CPCM~ :t#Q] : Cor,ditior-l pol1 comm3nd 211 ; cet ~ ctart bl~, Tx routine ? 1 2 ; t L.~o 423 213 ;
0327 64E3 214 a : JMP DUB0 :t#1] : Tr~nsmi-sive data T-~
2tS , routine.
- 216 : t L.No 51 217 ~
0329 64BS 218 ~ JMP MIB0 :t#2] : M~s~ge indi.-ator t.it T~ l 2t9 : ~outine.
220 : t L No 456 ~ l - 221 :
032B 64FE 222 ~3: JMP BRLB0 : t#3] : La~t bit of ~r3n~mi~ci~:e 223 )l data T~ ro~tin~. l 224 :t t L,No 556 22S :1 03 D 6465 226 R4: JMP MTMINT :#4] : Drop s~l~at ~. t3rt bit T:- l 227 :l routine.
228 :1 t L No 3S5 ]

FILE: aKl:SHIC~ HEWLETT-F~CKaRD: ~048 ~ mbl~r LOCaTION OBJECT CODE LINE SOUFCE L~NE
22~ ;1 1 032F 841~ 230 ~5: JMPP~RST:t#5] : P Jri tv bit Tx rout~ne, 23~ ;
232 ;1 t L.No 604 233 ;1 0331 84t1 234 ~6: JnPSTOPOJ C#63 : Stop Qit T~ routin~ t 23S :
236 ; t L.No58S ]
237 :
0333 8439 238 ~': J~P~CK1;t#.]: ~CK recei~ ckeck 239 ; routine.S
240 : t L.No655 3 241 ;
0335 84Z2 242 ~: J~P RCK:t#8]: RCK receiv~ '~ check 243 : routine, 244 ; t L.Ho 624 245 ;
0337 C47F 246 89: JrP~CK4t#9]: ~CK ch~Ck 4.
247 ; Sdisposal o~ 04 comm3nd.'~ 1 248 ;t L.No 1456 249 ;
033~ b4E8 2S0 B~0: J~F COrt04b ;t#10] , 04 c4mmand data Tx.
251 :1 Cdispos31 o- 04 command.:~
252 1t L.No 1241 ]
2~3 :1 0338 848E 254 C11: J~P KEYb~ :t#11] : St r~. bit Tx.
2S5 :I SRx routine.~ I
256 :1 t L.No 740 ]
- 2S7 :1 033D 84Bt3 2S8 Ct2: J~P P~LK . :t#lc] : Parity bit Rx.
25g : ;Rx routin~
260 : t L.No 8t4 ]
261 :
033F 84g8 262 C'3: J~tP RST~T :t#13] : Start bit erase.
~t63 tR,~: routine. 3 264 ; t L.No 760 ]
26~
Q341 ~4b2 266 C14: J~P Rt38ET :t#14~ : R~c~i~abl~ d~ta Px.
267 : ~'Rx rolJtir,e.
268 : C L.~o 7~0 ]
- 26~
0343 84bE 270 C'5: J~P ~CKOT :t#15~ : ~Ck: bit T:~. '1) 1 271 SP.x rout~in~
272 : t L.No 355 ]
- 273 :
0345 a4~E 2-4 C'6: J~tP, STGN84 ;t#16] : Stop bit T,~ 6.
27S : c~ntinue :~4 comm3nd d3ta R~l 276 : t L.~o 1137 ~ I
277 :
034, ~43a 278 C 7: J~P NCKOT :t#1,-] : NCK Tx .
27g :¦ SPx r.~ut.ino.~ 1 230 ;1 t L,No ~gg ]
281 ,1 034g ~48E 282 C13:J~tP STGN04 :t#15] : St.op ~it Tx .. 1 283 I continu~ n4 c~mmand dat3 284 :1 t L.No 1137 ]
~5 :1 ~-- 209 ~ 338043 FILE: ~KI:SHICI HE~LETT-F~CKhRt: 8048 ~--sembler LOC~TION OB-JECT COt`E LrNE SCIJ~CE LINE
0348 C43E 236 Clg: JMP ~CK3 :1#19] : ~CK cheCk ~.
2a- ; rR.~ routine ) 288 ;t L.No 13~3 ~ I
2~9 :
034D ~4D4 ~90 D20: JMP COM04 ;1~2Q~ : St3rt ~it. T.~.
291 ; ~Q4 command.~ I
292 ;t L.~o 121Y ~ I
293 :
034F ~406 2g4 D.l: Jrp STER84 ;1#21~ : StoQ bit T:~ 3 29S ;I di5pos31 of 34 com errQr. I
296 ;I t L.No 922 ]
297 ;1 03S1 84F3 ~98 D22: JMP STER04 :t#22~ : Stc.p bit T~
299 ;I di~pos31 Qf W com error.
300 ;I t L.No 900 J
301 ;1 0353 ~49~ 302 t'23: JMP STGR84 ;t#233 : Stop bit T~ 5.
303 ; 34 com all ok æ end. I
304 ;t L.No 1110 ~ 1 30S ;
03SS ~424 306 D 4: JMP STGR04 :t~21~ : StQp bit T~ 4.
307 ; 04 ro- 311 ok æ end. I
308 : t L.No 965 ~ I
309 :
03S. 84EC 310 D25: JrP REPRX :t#25~ : Stop bit T~ 1. 1 3tl ;I ch311en~e once more. I
312 ;It L.No a-8 ~ I
3'3 ;1 03S9 ~459 314 t`26: .lrtP LCIN :t#2;~ : L35t character indi--~tor 3tS ;¦ check.
316 ;It L.No 1033 ~ I
3'~ ;1 03S8 E434 313 D2.-: JMP IDLINT ;t#2 ~ ait routine for 34 ~om. t~st.t~st 319 ; No 1 ' 320 ;t L.No 16a4 3 321 ;
03SD E4t6 322 D 3: JhP DSCF34 ;t#23~ : trGp ~c3n f~r 34 comm3nt.
323 :
324 :t L.~o lG2g ~ ¦
32S ) 035F E4........... 326 E 9: lhp DSFq4C ~ ;t#29~ : Drop c3n for Q4 c-~mm3nd.
327 :
328 ;t L.No lr65 ~ I
329 :
0361 E448 330 E-0:JMP NDPS04;t#31l~ : Chan-~ir~ ~pre3tion to 31.
331 :
332 ;t L.No t~l3 333 ~ I
0363 64CE 334 F?tl JMP SMLING- :'#3 ~ : Life amp lc, I
335 ;
336 ; t L.No 4g2 3 337 ;
338 ;
339 SESSt*tSSSSSSS*tSSE*SsSS*-****ss*Ssss***~*Sss-ss*-ss*ss*sS*s**s*ss ~4q ;
~42 ;

~ 210 1 338043 FILE~ ~Kl~SHIGI HEWLETT-P~C~FC: 8048 asçembler LOCaTlON OBJECT COtlE LINE SOUFCE LINE

344 ;,.
345 ;Y.*~** ÇQNDlTlQNr;L~PQLL.ÇQNt)ITlON~L-PQLL.CQNDlTION~L~PQLL. ***~
~46 ;~.
~4~ :
~49 ; n " n .,.. u n n ., n ~ n ,. n " n n n .. " n "",.. , n .,.. .,... ,.,.. -.... ~.. -",... ".. .,.. n ~ n ~50 :
351 : ~ DROP SELECT ~ STr~RT BIT SET.
3S2 ; #a4 3S3 ; n n " .,., n ~ n .. ,., n n " n ".,""~................... ".,.. .,... "....... .."....... n ~ n ~ n 354 ;
3~ ; ..................... ............ ........ ......
03~5 00356 MTMINT: NOP
0366 266C3S7 JNT0 ETDSR :Detect -er............... ic- request 358 ; from 3P'J.
~ss ; ...................................................
360 :
0363 D40B361 CBLL TSET1 :t ~it timc counter Set ~, st.3rt,.
036r~ 64ag362 ~QTM~F: JMP DVMN3 ;~ n~ rcq-JPst ' :
363 :
364 ; reque t, ! `
036C D40BB5 ETDSP: C~LL T3ETl t bit t-ime .-o~nter set ~. ~t3rt 366 :
036E B8~1367 MOV R0,#DRM~PQ ;G~QP map çet ~r nQt.
0370 F0 368 MOV ~eRo 0371 726P369 J83 ~OT~P
370 :
0373 F4B6371 C~LL DEVCH C:hanging the de~.~ice map.
372 :
037S BD5E3~3 rto~ R5,#DEM~P0 :Firs', de icc çel~s~
3~4 ;
3~ ;
0377 FD376 DMSRE: MOV a,RS ;Next de~ice select.
0378 ~8 3~7 rto~ R0,~ :
037~ F0 3~3 rtO~ ~,eRO
037~ B867379 rtov R0,#DEMaPH :~'JC~''ic~ map 1 5ct ~r not .
037C ~0 380 rtOV eR0,~
937D D3FF331 XRL ~,#OFFH
037F C6ag3a2 JZ D~MNS
383 :
384 : ~ -~t, 0381 D422385 Ç~LL PaRcLL :P3rtt.~ fl3q cl~ar 386 : ~ .LF t~l3~s cle3r-.
0383 D414337 CaLL VLFO0 ;St3rt bit "O" See.
388 ;
0385 2300339 MOV ~,#0 ;-~NEXT tCPC~O~*
0387 C4EF390 JMP JMPR ;RETR.
3~1 ;
392 ; N.-. rcquc5t. qr nct. ~t 033g FF 3~3 DvMNs: YOV ~,R7 038~ 4302394 ORL ~.. #02H :Dr-1~p çc-~n fl3q ~OEt 038C r~F395 MOV R,,~ ; ~
396 ;
033D B4FF397 Cr~LL BCNTeC :Q' c~mm3n.i 5et ~r nct 033F F2933~3 JE7 SF04t1 :
03~1 C4F23~9 JMP NTDRP ;~ ~Jclt ~et ~ .A
` ~ 211 1 33~43 FILE: qKI:SHI~I HEWLETT-F~C~R~: ~048 ~ss~mrl~r LOCPTION OBJECT CQOE LINE ~QUFCE LINE
400 ~
40~ ;
0393 FF 402 8F04D: MOV ~,R7 0394 4304 403 QRL ~,#04H
0396 ~F 404 MOY R7,~ :
0397 E459 405 JMP t~T045 :Dispc.31 c~f 04 }~mman~.
40B ~ r~E,T t~~r~ 0 407 ;
40a ;
40~ ;
41~ ;
412 ;~: CONDITIOH~L PQLL CQMM~r~ SET ~ ST~PT erT SET.
413 ; *~t~
41~ ; :
417 ;1 039g 58 413 CPCOM: D8 53H
4~
- 42' ;
12c 1 423 ; ................................... . . . .
03~ F8 424 CPCMQ: MQY ~,RQ :St-~rt- bi~, tr~ns.
038B 3D 425 MOYD P5,~ ;
426 ; ................ ......... ........... .. -. ..... ..
427 , 039C D408 423 C~LL TSETl ;1 tit. timC ~~unt.C~r s~t ~ st.3rt.
42~ ;
039E 2399 430 MOY ~,#CPC.OM ;Conditi-n.31 PQ'1 c~mm~n~ -.t 03~0 a3 431 MO'7'P ~,e~ ~ Tr3n~missi~-~ d~t3 s~t.
03~ ag 43 ~OV
03~2 B867 433 MOY R0,#DEM~PH :~#T`~UFi :--- rcndi~iQnal pc1I
03a4 F0 434 MOY ~,QR0 ; c~mm~nd ~ d~ic~ 3ddr~5s.
03~5 530F 435 ~NL ~!#0FH .:
03~7 49 438 ORL ~,R1 03~ BaSD 437 MOY R0,#TY~lJF
0~ 0 4~-~ MO~ ~P0!~ :
4.~ ;
03~B S363 44Q MOY R0,#L~1 :Indir~ct 3ddr~e~ina t~uff~r ~ct .
03~P ~007 441 MOY QRO!#7 442 ;
03~F D414 143 C~LL YLFO0 :MI ~it ~0 5ct.

03R1 2302 44S MOY ~,#2 ;~ NE:iT CMIQt 03e3 C4EF 446 JMP JMPR iPETR.
447 ;
44a ;
449 ~
45~ ;
452 ; ~ MESS~rE INC;I c ~TOP eIT T.~ . .-453 ;
454 ;
455 , 45~ ; ,................................. .. -........ .......

~ 212 1 338043 FILE: ~KI:SHIGI HEWLETT-F`~ RD: E048 ~sE~mbl~r LOCaTION OB-JECT CODE LINE ~OWRI-E LINE
03~ F~ 457 MIO0: MO~' ~,RQ :MI bit trans.
03B6 3D 453MC'~D PS,A
45~ ; ......... .............................. ... .
4~0 ;
03R7 D4aF 461 C~LL TSETOS :1 bit timC _~untcr set :.. st3rt,.
4~2 ;
03B~ P3SD 463 MOV Ro,#TxeuF :~;--[TxellF~
03BB FO 464 MO~ ~,QpQ
03BC 67 465 PPC ~ :F.~t3t.c rlcht 03eD AB 466 MQ`~ R3,~ :
03BE F6C4 467 JC '/LFD1 C~
468 :
03C0 D414 46g C~LL ~/LF00 :~:Çarr~,~ = n:~
4-0 : Tt-ansmissi~e d3t3 = n- set.
4~1 ;
03C2 64C3 472 . JMP MIO0E
4.~3 :
03C4 D429 474 '~LFD1: C~LL P~L~N :~'Ç3rr~ = 1 3 475 ; P3rit~ anal~/sc.
4~6 , 03C6 D418 47' C~LL '/LFO1 :Tr3nsmissi~c d3t~ 5 'I ' sct.
478 ;
03C~ BA07 479 MIO0E: MOV P2,#0.H :Bit. CQuntcr ~t, 480 :
03CA 231F 48t MOV A,#31 :*~*NEXT rSMLING~
03CC C4EF 482 JMP ~IMPR :RErR.
4a~ :
4a4 ;
4~5 ;
48~ :""""
487 :
48a ; ~ LIFE SAMPLE. :~
#F:
4~0 : """""""
4g1 :
492 ;
03CE Q0 493 SMLING: NOP c~ist thc bad Devicc on 03CF 36D9 494 JT0 SMLOK ; this c~blc ?
4q~ : ......... --,.. --- - -- -----~---- - -- -03D1 D40F 496 CALL TSET05 ;~Error !~
497 ; - H31f bit timc cQlJn~cr ~-t :~.
03D3 FE 498 MOV a, R6 ; start.
03D4 431Q 4~9 ORL A,#1QH
03~6 AE 500 nov R6,A :.

~02 ;
03D~ D40F 503 SMLOK: C~LL TSET05 ;~Ok !) S04 ; Half bit timc c~lJnt~r ~t ':.
03DB FE S0S MOV A,R6 : =tar~
03DC S3EF 5Q6 ANL A,#0EFH
03DE ~E S07 MOY R6,~ ;
~0~;
03DF 23q1 5Q9 DWBOJP: MOV a,#1 :~NE~'T rG41En]~
03E1 C4EF 510 J~P JMPR :PETP.
~ I 1 ;
5~2 ;

~ 338043 FILE ! ~K r SHIGI HEWLETT-P~CK~RC: ~04B ~ssenbler LOC~TION OeOECT BOOE LINE SOURCE LI~E
5t4 ;
51S : ~: S ~IT DHTH T~
5~6 ; #~1 518 ;
5~ ; .................................. ...............
03E3 FB 520 ni.1eO: MOY ~,P0 :Tr3r~-mlssi:e d3t3 e--anS.
03E4 3D 521 MOYD PS,~ :
522 ; .................................... ......... ....
523 ;
03ES b4oB 524 C~LL TCET1 :1 t~it t.im~ }cunter see ~ st1rt.
525 ;
03~7 FB S26 MO~ ~,R3 :Fc.t~t-e r-ight.
03E8 67 527 RRC ~ :
03E9 ~B 528 MOY R3,~ :
03E~ F6F0 S2g JC '~LFD2 :C~,~ = 1 ~
530 ;
03EC D414 S31 C~LL ~'LFO0 :?le:,~t tr3nsmissive data = '0' set.
532 ;
03EE 64F4 533 JMP DWBOC : -534 ;
03FQ D429 S35 YLFD2: C~LL P~L~N :t~e,t tr3nsmissi~-_ data = '1' set.
5~6 ;
03F2 P41B S37 C~LL 'LFO1 :Parit~./ fl3g set.
53~ ;
03Z4 E~Fa 539 DWBOl-: DJN~ R2,PWBOE ~Tr3nemissi~e d3ta enci 3 540 ; ~ en~ I ?
03F6 2303 541 MOY ~.#3 :~*NEXT CP~L~N3~~
03F8 C4EF 542 J~P JMPR :~ETP
- 543 ;
S44 ; ~- not eni ! ?
03Fa 2301 545 DWeOE: ~OV ~,#1 ;~ EXT CDWeO~~
- 03FC C4EF S46 .JMP JMPR :~ET~.
547 ;
S48 ;
54g ;
551 ;
S52 ; ~ L~ST C~T~ T~
553 : #~_ 555 ;
556 ~ ....................................... .. ........
03FE F8 $57 P~LeO: MOY ~,R0 :L~st dat,a tr3r,s.
03FF 3D 558 MOYD P5,~ ;
- 559 ; '''''''' 560 , 0400 P40B 561 C~LL TSETI ,1 ~lt tin,~ ~~3~Jnter set :. st3rt.
562 :
0402 e863 S63 MOY R9,#~NSPHP
0404 F0 564 ~OY ~,QR0 :P3rlt~ fl3a e~ea!~.
0405 120B 565 JB0 E'~I~ST
566 ;
0407 D414 567 Ç~LL '~/LFO0 ~. E~-en 5~ ; P3r1t~ ~it ~n~ 5~t 040q 34OD 5fi9 JMP PBSED
y~O:

'- ~ 338~43 FILE: ~KI-SHIGI HE4LETT-PaCKaRt': 8048 as~cmbler LOC~T10~ 08JECT CODE LINE 504RCE LINE
040B D418 S71 E'tNST: C~LL YLFOI ;~ Odd 572 : Parit~ bit ~ sct.
S73 :
040D 2305 574 PB8EDt ~OV ~ #S ;~~EXT C~TMINT~*~
04OF C4EF S75 J~P J~PR ~RETR.
576 :
S77 :
578 :
580 :
581 : : STOP BIT T~. ;
S82 #~r S84 ;
595 .. .. . . . .......... .. .. . . . . .
0411 F8 5a6 STOPO: ~OY ~ RO
0412 3D 587 ~OVD PS ~ ;Stsp bit tr4ns.
~88 : ................. ............. ....... .... .. ..
5a9 :
0413 D40F 590 C~LL TSETOS ;H~l~ bit time csunter set h start.
~91:
0415 B868 592 ~OV RO #Lavl ;Indircct addrcssing.
0417 FO S93 ~OV a QRO ;*-~*~EXT ~-- CL~Vl~**~
04t8 C4EF 594 J~P J~PR RETR.
~95 :
S~6 :
S97 :
5g8 :
5~9 :
600 : ~ P~RIT~ BIT Tx.
601 #~5 ~02 604 : ....................... .... ..... .
041a F8 605 PaRBT: ~OV ~ RO
041tt 3D 606 ~OVD P5 ~ :P~ritY bit trans.
~07 ; ............................. .. ....... .. .

041C D40F 60g C~LL TSET05 ;H lf bit timc colJntcr sct ~ start.
610 ;
041E 2308 611 ~OV ~ ~8 - ;Indirect addressing 612 ; *~*NEXT tRCK~***
0420 C4EF 613 J~P J~PR :RETR.
6~4 ;
61S ;
6~6 ;
6~ :
61g ;
620 : ~ RCr CHECK. .
62~
622 ;"""" " " """" """""""""""""~"""~ """"""" """""""""""""""" """"
623 ;
624 ; ............................. .....................
0422 00 625 RCK: NOP
0423 362D 626 JTO SPCEI :RCK bit deteCt.
~27 : . . ....... . .

1 33~043 F}LE: aKI:SHIGI HEWbETT-P~CK~RD: g048 ~e~embler LOCaTION OBJECT CODE LINE SOORCE LINE
6~9 ;
042S D40F 629 C~LL TSETOS ;Half bit tihe co~nter set ~ ctart.
~30 ;
b427 FE 631 ~OY ~,R6 ;RCK fl3~ set.
0428 4340 632 ORL ~,#40H ;~ OK !.
042~ aE 633 MOV R6,a 635 ; ~: Error ! j 04ZD D40F 636 SPCEI: CaLL TSETOS ;Half bit time -Qunter 5et 3 start.
637 ;
042F FE 639 MOV ~,R6 ;RCK fla~ 5et.
0430 53BF 639 ~NL a,#OBFH
0432 ~E 640 MO~ R6,~ :
~4~ ;
0433 D41B 642 RCKE: CaLL VLFO1 ;8tQp bit "1~ ~t 643 ;
0435 2306 i44 MO~ ~,#6 :~*NE~T tSTOPO~
0437 C4EF 645 JMP J~PR ;RETR.
646 ;
~47 ;
648 ;
65~ ;
651 ; ~ ~CK CHECK.
~2 ; #~_ 6~4 ;
6S5 ; ..................................... .. ........ .
04~9 00 6S6 ~CKl: NOP
043a 2647 657 JNT0 CMCHK4 ;~CK bit detect.
~8 :
~59;
043C D40F ~60 CaLL TSET05 ;H31f bit timc counter eet ~ =t.art 661 ;
043E FE 662 MOV ~,R6 ;RCK fla~ check !
043F D26a 663 J86 RCKEND
664 ;
0441 84FF 665 ERRCKT: C~LL 8CNT8C ;-1 PSK error 044~ F28C 666 J87 DP04ST
044S C4aF 667 J~P DISEND ;~ER) ~68 ;
04~7 D40F 669 C~CHK4: CaLL TSET05 ;Half bit time countër e.et ~ start 0449 FE 670 hO~ ~',R~
044a 924E 671 ~84 ~8ERS~ :

673 ;
044E B867 674 aBERSP~ HOV RO,~DEM~PH ,m~ke err~r meerace ~04 0450 F0 67S ~UW ~OR0 0451 S307 676 ~NL' R,~07~ ;
04S3 E7 677 ~L ~7 0434 E7 678 RL- ~ ;
04S5 E7 67g RL' P~
04S6 ag ~80 ~O~ ~t','~
0457 8837 681 ~ W ~0,4~RII~F~
045~ FO 682 ~OY ~,QR~T
045a ~307 ~3 a~ 07R
045C 49 684 ORL a,R1~ ;

_ . _ \- 216 1 338043 FILE: ~KI:SHIGI HEIJLETT-P~C~RD g04g ~c~mbI~r LOC~TIOH OBJECT CODE LIBE S13URCE LIBE
04SD B8S6 685 ~O~ R0,4RE84H
045F ~0 636 ~0~ ~RY
0460 B8S8 6~7 ~OV R0,4RE84C
0462 BOQ4 698 HOV QR0,404H
- 0464 B857 6~?9 ~OV R0,4RE841 0466 B00Q 690 ~OV- eR0,40H
046? 3441 691 JMP ERRCKT
6?2 ~
6?3 ~CK ~ PC~ ok 046~ D422 6?4 RCKEND C~LL P~RCLL Parity fla~ cl~ar 69S ~. YLF fla~ c12 3r ~g6 ;
046C Ba67 6?7 MOY R0,#DEM~PH ,Makc ,clclrcc~ b~,~t} C~f ?~ cc~mr~r,.i.046E F0 69? MOY ~,QR0 046F S307 6?9 ~BL ~,#07HC~POLING~ ;--- drcD numb r uC~rcr 0471 E7 r00 RL ~ S bit 1 1 ic-~ a~i~r~s~ ~ r 0472 E7 rO1 RL ~ 3 bit 0474 ~9 703 MOV R1,~ -0475 B837 704 MOV R0,#DRM~PH
0477 F0 70S MO~ ~,eR0 0478 S307 706 ~tL ~,#07H
047a 49 707 ORL ~,R1 047B B86~ 708 MOV R0,4POLIHG
047D P0 709 ~OV eR0,~ ;
710 ~
047E B868 711 MOY R0,#L~Y1 0480 8000 712 MOY eR0,#0H;?4 c~mnand fla~ ~et 0482 B86B 713 MOY R0,#C,NTBY Bye~ counter cl~3r 0484 B000 714 MOV QR0,#0H
71S ;
- 0486 D414 716 C~LL YLFû0 St3rt bit 0 set t_ 717 :
0488 230B 718 MOV ~,#11 ;~:~dvancc !~
**~BEXT CKE~C!~3~*
048~ C4EF 720 .~MP 0~PR :RETR
721 :
04gC E459 722 DPQ4ST JMP I~T04S ~n-~p~cal ~f 04 .~amnani 72~ ;
~24 ;
2~ :
~26 ;
727 ;
723 ~**~ 34C0M-34CQM-~4CgM-34CQM-34COM-~4CQM-34CQM--4C - 4 -M ~~
7,9 ;~
-30 ;~ DISP05~L OF ~4 CQMM~ND
~~ 1 ; ~
732 ;~*~ ?4CoM-34coM-~?4coM-?4cQM-84cQM-?4coM-~4cQM-~l5l-lM-~lcuM ~~
?33 7~4 u. . . ~ . u. . ,,, """~",""",,"""""" ","""""",~,"","", , "
73S;
,-36 ; ~ ST~RT BIT T~ <--- R~ RQUTI'IE !
r37 ltC~I
73a : . u,,,,,,,,~ ,,,,,,,,u,,,,,,,,u,,,,,,,,,,,, ","" ", -~9 :
40 : , . , 043E F8 ,--41 ~E;C3~ MOV ~,R0 . . 217 fILE: ~KI:SHIGI HEWLETT-F~C~FD~ g0~8 Qs~ambler LOC~TION 08JECT CqDE LItlE SOIJRCE LrNE
048F 3D 742 ~tOYD R5,~ :5t3re bit -tr3ns.
743 ; , 04g0 D408 74S C~LL TSETt ;1 bit time counter ~at ~ ~t3rt.
746 ;
0492 D418 747 C~LL '~LFOl ;St3rt bit re~et tb "l" -et.
748 ;
0494 230D 749 rtov ~,#l3 -:*~*NEXT tRST~Ti~
0496 C4EF ~S0 J~tP J~PR ;RETR.
75l ;
752 :
753 ;
754 ;~.-. .-u uuu,,,, """ " "", 755 i 756 ~ T~RT BIT ER~SE.~--- R~ ROUTltlE. :!
#C13 7~9 ;
760 ; .......... ,,.,,.. ,,,,,,.. -, 0493 F8 761 RST~T: t10Y ~,R0 i8tart bit clear.
0499 3D 762 ~tOYD P5,~ ;
763 ;
764 ;
049~ D40F 765 C~LL TSET05 ;H-lf bit time counter cat ~ ~t~rt.
766 ;
049C 8~08 767 ~tOY R2,tQ^H ~Bit counter eet.
768 ;
049E 230E 769 t~OY ~,#i4 :~*~tlEXT tRBSETi**~
04n0 C4EF 770 Jt'tP J~PP ;RETR.
77t ;
772 ;
773 ;
775 ;
776 ; ~ D~T~ R~ R:~ ROUTINE.
777 ; #Cl4 778 ; ....... u~ùu., ",. ........................ .." ... ~.,.,.. ...... ,,.... ,...... u 779 ;
790 ; ~'''''' 04~2 00 73l R85ET: NOP
04~ 26~B .-32 JNT0 YD~TIl- ;ReceiYad dat3 ic 783 ; " 0 " or u I ~ ~
- 785 ;
04~5 D40B 736 C~LL TSET1 ;1 bit time CQUnter cet .~ ct3rt. 737 ;
04~7 F43t 738 C~LL YLFI0 :~ D3t,a = ""~ `~
04~9 848l 739 Jt'tP CNTDN
; ' ~3t3 = "1", 04~B D408 . 79l YD~TII: C~LL TSETl :I t~it time coun~,er iet ~ ct3rt~
7~2 :
04~D D429 7g3 S~LL P~L~N ;P3rit~.J ~la~ 5et.
04~F F428 794 C~LL '~LFI1 7~5 ;
040t E~B7 796 CNTDN: DJN~ R2,5ETPB :Roceive en~ or not ' 797 ;
798 ; ~ ~ecei~.~e and !

~ ` 218 1 338043 FILE-: QKI:SHIGI HEI,lLETT-P~CK~Rtj: ~048 ~ss~mbler 0483 230C 7?~ P~Lk'3: MO~ a,#t2 :-~*~NE`~T tPr~Lk:~*~
04B5 C4EF ~00 JMP JMPR ;RETF' ~Ot;
302 ; ~ R~ ivo continu~ !
04e7 230E 303 SETRB: MOY ~,#14 -**~MEI~T tP85ET~*~
04Bq C4EF ?04 JMP JrPR :RETF.
- 305 ;
~06 ;
307 :
30~ ;
310 ; ~ PaF'IT`r 3IT P,~ Px ~OIlTI~E.
311 :
812 ~ -- n ~ " " " " " " " ", 313 :
314 ; ......... .. . . ................... . .
048B 00 815 P~LK: ~OP
048C 26t)5 816 J~T0 PT~81 :Parit-.~ bit. Rx.
317 : ........ ,, , .. .... . .......... ;. ...... ....
8~8 ;
048E D40F 31~ C~LL TSET05 ,H~lf bit t-ime cour.t~r ç~t c. start.
820 ;
04C0 886? 321 MOY Ro,#~NsPaP ::P~rit-v~ bit = 0 :
04C2 F0 az2 ~o~ ~,e~o 04C3 12C7 323 J80 ~CK~C
04C5 84CD 824 JMP aCK~C
82~ ;
04C7 D418 325 NCK~S: C~LL '/LFO1 :~ P3rit~, ~rror !
327 ; ~CK "1 set.
328 ;
04C9 2311 82? MOY ~,#17 ,~ME~T t~Sk'OT~
0~C8 C4EF 830 JMP J~PR :RETP.
331-;
a32 : - P3rit~J ok ! ~
04CD D424 333 aSKPC: CaLL P~RCLR :Parit-J fl3g cle.3r.
04CF D414 834 C~LL YLFO0 335 : ~lCk "0" sct.
836 :
04D1 230F 337 MOY a,#15 ~~E`IT t~Cl~OT~*-~
04D3 C4EF 338 JMP JMPR :F:ETP
33~ ; _ 04D5 D40F 340 PTYBI: C~LL TSET05 :Half bit timr~ coumt~-r 3rt, '~. st.3r'.
341 ;
04D2 886? 842 MOY R0,#aNsP~F :Farit~J bit = "1" ?
04D? F0 843 MO~ ~,eRO
04Da 12CD 344 J80 aCKaC :~P3rit~./ Ok !~
04DS 84C7 84S JMP HCK~C ; Parit~ ~rror !~
~46 ;
847 ;
848 :
~4~ ;"""~' 350 ;
351 ; ~: aCK T~ -- Rm F~OUTI~E.
~2 ; #~1e ~S3 ; ~ .... H
~54 ;
3~ ; ---- - - -- ' ~` ~ 2 1 9 1 338043 flLE: ~KI:SHIGI HEWLETT-P~CK~RRQ: ë04% ~s5~mblf~r LOCRTION OBJECT CODE LINE SOURCE LINE
04DE F8 8S6 ~CKOT: MOV ~.R0 :aCK tr3nS.
04DF 3D 857 MOVD P5,. a ~S8 J ...................................................
85? :
04~q Q40F 860 C~LL TSET0S :Halt' bit tim~ Jr.t~ S-t ;,- ~t~rt~
861 ;
04E2 FF 8Fj2 MOV ~.R7 04E3 4380 %63 ORL ~.. #80H :Resp~ns~ t`l3ct -~t.
04E5 ~F 864 MOV R7,~ :
~65 :
04E6 Q41B 866 C~LL YLFO1 .:St~p bit "1 s~t.
~6- :
04E8 231~ 868 MqY f~#c6 ~***NE'!'T CLCIN~***
04E~ C4EF 86? JMP .JMPR :RETF.
~t70;
871;
t ~ 3 ~4 :f STOP 5~T T~: 1. OH~LLE~IÇE R~ OMCE MORE. ?
87S : - #C'_' ~i,,7 :
~i~8: ...................................................
04EC F8 87g REPRX: MOV ~.RO ~St~p bit T~:.
04ED 3D 8~0 MOVQ PS~ :
8êil : ...................................................
~82 ;
04EE D40B 883 C~LL TSET1 1 bit tim~ ~unt~r 3~t ~ st~3rt~
~84 :
04F0 D424 88S C~LL P~RCLR :P~rit~ fl~g ~ r.
88~ ;
04F2 D414 8%7 C~LL VLFO0 ,:St~rt bit "0~ s~t.
~88 ;
04F4 230B 88g MO~ aJ#11 ;~*~NEXT CKE`'D~ *~*
04F6 C4EF 8g0 Jt~tP J~PR :RETR.
8~1 ;
8~2 ;
8g3 ~tgS :
8g6 ; f~ STOP BIT ~ - FOF Q4 COMM~ND. ~
837 ; ~C!__ ~t~39 ;
900;
04F8 F8 ~01 STER04: MOV , ~.RO ;St~p bit tr3ns.
04tg 3D g02 MOVD PS,~ :
al~3 ~ , ~304 ;
04Ff~ D4dB ~0S C~LL TSET1 :t bit t~in~ c~unt-r i-t ~` it3rr.
906 ;
04FC B827 ~307 MO~' R0J#SDMSÇC
04FE B002 ~308 MOV oRo,#0-H :Err~r in~ ~3t~r s~t,, 0S00 B8~6 ~0g MOV RO~ #SDMSÇl ;
0S02 eooo '310 M~V ~RO,.#OH
g11 ;
0S04 E4%~ 31~ JMP R04ERS

` ~ 1338043 FILE: aKI:SHIGI HE~LETT-P~CKaR~: ~048 ass~mblcr LOC~TION 08JECT COOE LI~E 50URCE LII~E
q13 :
914 :
q15 :
916 ;~.. u.uu.. ~ .-uu ~u n ........... u .. u...... .u. ... ~ n .. u.............. u ~17 ;
918 ; < STOP BtT T~ 3. FOR 84 SOMM~NO.
919 . #D'1 q~0 ;... ... .. u...... u u ~ n ....... u........... ...... ................................ ..
a~1 :
~22 ; ...................................................
0506 F8 9c3 STERS4: MOY a R0 ;St.~p bit tr3n.
0507 3D ?24 MO~D PS.~ ;
ac~ ,............. .. ...... ............ ........
~5 ;
0S08 D40B 92 CaLL TSET1 :1 bit tine --~unt~r s~t ~x ~t.3rt.
~28 ;
050a B85a 929 MOY R0 #POLI~lC :Gr-~p ~ d~ -J-ir~ t 930 : t-~ r:=p~n~: buff~r.
050C F0 31 MO~' ~ eRO
0S0D B8S6 932 MOY Rd #RE84H
0~0F ao ~33 MO~' eRO a .
934 ;
0510 B8S8 93S MO~' R0 #RE84C
0S12 B002 936 MOY QR0.#02H :~: DE~-'ICE t~ ECU lin~: ~rr-~r ~ :-0514 B8S ?37 MO~ R0.#RE841 Err-~r in-Jic3t.~r =~t.
OS16 B000 938 MO~' eRO.#0H
0518 C4~F 939 JMP QISEND
?40 ~
~41 :
?4 943 ________ -------------------------SUB ROlJTI~lE---~44 ;
945 ; t INPIJT D~T~ SET TO 04 6UF. ~ 6`rTE CûlJNTER INC.RûlJTINE.
946 ;
347 ; -------------------________________________ 94~ ;
0Yla D403 949 IND~B`: CaLL CNT8.CR
dS1C 0328 ?S0 aDt~ ~ #SDMSCC+I
0SIE ~8 951 MOY Rd ~ :
OSIF FB 9Sc MO~ ~.R-' :
052d ao a53 MOY l?Rd Q ~ ;InplJt J3t3 ~t tq 04 buf.
9S4 ;
0Sc1 D40- ?55 CaLL BCNINC .. 8!.t~ c~unt~r In.~.
dS23 83 956 RET
?S7 :
958 ;
;~.. uuu... uu~ .. u................. ---.. -............ -q60 ;
?6t : ~ STOF 8IT T~ 4. 04 CûMM~C ~LL O~. I END ' q~ ; #t'-~l 963 ; u - -~ n ~ U U U ~ " " " " " " " "
'?64 ;
q65 : ' OS24 F8 966 ST~R04: MOY a~R0 :St~p bit tr3n~
0525 3D ?6~ MOVD PS.~ :
q68 : ............................... ......... .........
~69 .:

" ~ 221 1 338043 FILE: ~KI:SHIGI HEWLETT-P~C~r~R&: 8043 ~ss~ml31-r LOC~TION 08JECT CQDE LINE SQURCE LINE
0526 D408 970 C~LL TSET1 :I bit, t-m~ .-ount~r .~t ~, St,art,.
q~1 ~
OS28 8827 9~-2 MOY RO,#SDM'.GC :QsS~ic~ ~idr~s- 1~3r.
OS2~ FO 973 MOY a.eRO
OS2B S3F8 974 ~NL ~#OF8H

052E 7, a76 FR a 052F 77 9.~ RR ~ :
0530 ~0 978 MOY eRO,P
979 :
OS31 B41~ 980 C~LL INDaB't :Input d3t.3 :~t to 04 buf.
981 ~ ~ byt,~ ~~ount~r in~-~r.3utin~.
~82 ;

984 ;
OS34 FO g85 MOY ~,eRO
OS3S B8c6 986 ~OY RO.#SQMSCl :B~t~ ~-ount-r bufr~r s~t.OS3~ ~0 987 ~0~ QRl~,a 988 ;
0538 E48~ 989 JMP R04ERS
9GO :
ag1 99~ .~
~94 ;
g95 ; C NCK T~ F;- POUTTNE. ,~
~6 ;
998 ;
ggg ; , OS3~ F8 1000 NCF.QT: MO~' ~,RO :~C~ tr3n3.
053e 3D 1001 MO~D P5,~ :
1002 ; ...................................................
1003 ;
053C D40B 1004 Cr_LL TSET1 1 blt tim~ ~ount~r -~t, ~ st~rt.
~Or)S
053E FE 1046 MO~' ~,.R6 OS3F S~48 1007 JB~ REPER :E~r--~Jr = 5 tim~s 3 0541 lE 1008 INC R6 :Error ~-o-Jnt~r in--.
0542 D418 1009 C~LL '~LF01 : -1010 ; - ;top r3it "1" ~t.

OS44 2319 1012 rtûY ~.. #2S ~ NEXT ~pEpFxr]*~
0546 C4EF 1013 J~P J~tPR :PETF'.
1014 ;
0548 B868 101S REFER: MO~' RO,*L~Yl :~ 5 tim~s ~rror ! ,~
1~54~ FO 1016 ~~ eRo ~lspos3l Ot 1)4 romm3n.i or 1017 ; B4 ~~omm3nd ' 054Q Q41B 1019 CaLL YLFOl :04 ~~omm~r:d --r~-or r~spons~.
1020 ; stop bit, "1" s-t.
1021 ;
05.4F 2316 102~ MO~ *''~ :*~*~EXT ~BTEF:04~*~
055t C4EF 1023 JMP .JMPR :FETF.
1024 ;
OS53 D41B 10~5 JEF84: C~LL ~'LF01 :84 ~: ~ir p-311in~a ~ ~rrar r-~=p.-.r.5~, 1026 ; st.,p bit ~1" 3 - t,, FILE RKI SHICI HEWLETT-P~CK~RD 8048 ~ssembler l 3 3 8 0 4 3 LOC~TIO~ OBJECT CODE LINE ;OUfiCE LINE
t027 ;
055S 2315 ~028 ~QV ~ #21 ;~ME,T t,TEP~4]~
0557 C4EF 1029 Jrp JrpR ;PETP
1030 ;
tO31 ;
1~32 ; n ~ n 7~33 ;
~034 ; ' L~ST CH~R~CTEP IMDIC~TnR CHECK
#D26 1036 )~ n ~ " " " ~ " " " ~, " " ~, " ", t037 ;
1038 ;

055~ 267B 1040 JNT0 LCIE~J Lact char7ctcr lndicatnr ; det~ct 1042 ;
1043 ;
055C D40F 1044 C~LL TSET05 Half bi~ time sour,tcr sct ^~ st~rt 104~ ;
05SE B86 1046 MOV RO,#L~YI
0560 F0 1047 ~OY ~,eRO
0561 C66F 1048 J2 B~I84 ;ticpo~al of 94 command or 104~ ;
0563 D403 1050 C~LL CNTBCK ,B~tc colJntcr chcck 0565 D304 1051 XRL ~,#4H ;D~,a C= S b~tc O
0567 C68E 1052 JZ LCIER ~ 04 Scrror 1053 ~ go~d !
0569 D41B 1054 C~LL YLFO1 ;~1 Di~po~l of 04 comm~nd !
10S5 ; St~p bit~ ~ S
~056 ;
056B 2312 10S7 hOY ~,#19 **~E,ST tSTGM04 0S6D C4EF 1058 J~P J~PR ;RETR
105~ ;
056F D403 1060 BPI24~ C~LL CNT~CK
0571 D304 1061 XRL ~,#4H ,Data <~ S byt,~
0573 C6g4 1062 JZ DY84 ~1 a4 'crror 10~3 ;
1064 ; good !
057S D41B 1065 C~LL YLFO1 ;~ Di~posal -of 91 c~mmar,d ! ' 1066 ; 5top bit I s~t 0S77 2310 10 B ~Y ~,#16 ~*~EXT t;T~B4 0579 C4EF 1069 J~P J~PR RETR
1070 ;
05 8 D40F 1071 LCIEM C~LL TSET05 Half bie time c~ nter set ~ star~
10~2 ;
OS7D B968 1073 ~O~ R0,#L~Yl 057F F0 1074 ~OY ~,eR0 0S~0 C688 1075 JZ EMST84 05~2 D41B 1076 C~LL YLFOl r t)i~pncal of 04 c,mn,nd !
1077 ; Stnp bit 1~ ~t 1 079;
0594 2318 1 07'? I`lOY ~, #24 ; ~* ~NEUT t '-.TI;R Q4 ] ~ t 05~6 C4EF 1 Q80 Jl'IP Jl'IPR ; PeTR .
~0~;
1082; ~ Dicpc~cal nf :34 comm3r,d !
05~3.'3 D4 1 P I Q83 E~ST 34: C~LL '~LF0 1 -- 223 1 33B94~3 fILE~ RKI:SHIGI HEWLETT-P~CK~RD 8048 ~=s~mbl~r LOC~TION 08JECT CODE LINE SOURCE LINE
t084 ~ Stop bit, 1~ ~t 103S ;
058a 2317 1086 MQV ~,#23 ~*~*NE~T tSTGR84~*
058C C4EF 10a7 JMP JMPR ;RETR
to8a ;
10a9 ; ~: ~rater than 5 b~
058E D418 10~0 LCIER! C~LL VLFOI r~isposal of 04 comm3nd !
'09' ; Stop bit 1" se~
1 0g2, 0S90 2316 10~3 MOV ~,#22 ~*~E~T tSTER04]~
0592 C4EF 10g4 JMP JMPR ;RETR
I 09~;
0S94 D41B 10g6 DY34 CRLL VLFO1 ;~1 rrispos3l of 84 command 10g7 ; Stop bit 1 3et, 10~8 ;
0-596 2315 10g9 MOV ~,*21 ;~k~NEXT tSTER84]~
05g8 C4EF 1100 JMP JMPR ;RET~
1101 ;
1102 ;

1 1 QS;
1106 ; ~ STOP BIT T~ S 84 CQM~NMP ~LL Q~ ! E~D ' 1107 J # t) r~ 3 1 1 08; " " "
1 1 0~ ;
1110 , .,,,.. ,,,-, 059R F8 1111 STGR34 M5V R,R0 ,Stop bit trans 059B 3D 1112 MOVD P5,~ ;
1113 ; .,, ,, . , . -1114 ;
059C D40B 1115 C~LL TSET1 ;1 bi~ time counter }et ~ t-3rt 1116 ;
059E B4CC 1117 CRLL REDSTB ;Pesponse dat~ ~t, to ~84 buffer 111a ;
05ao B86a 111g MOV R0,#POLI~G Dispos~l addr~s} buffer set 05R2 F0 1120 MOV ~,QRO
OSR3 B856 1121 MOV R0,#RE84H
OSR5 ~0 1122 MOV ~R0,~ ;

05~6 D407 1123 C~LL BCt~ C B~t~ c~unt~r buf~r -i^t 05R8 F0 1124 MOY ~,~RO
05~g B8S7 1125 MOY R0,#PE~41 05aB RO 1126 MOV eR
05~C C4aF 1127 IMP DISE~D
1128 ;
112g ;

1132 ;
1133 ; ~ STOP BIT Tx 84 CQMM~8D R,x p~T~ CQ!JTI~IUE~

1135 ;. n n n , n n , . . n ,"",, "","""""""""",""""""
113~ ;
1137 , ~ , , 05~E F8 1138 STG884 ~OV ~,R0 ;~oQ bit tr3ns~
0SaF 3D 1139 MOVD p5,~
1140 ;

224 l 338043 FILE: ~KI:SttI~I HE1~LETT-FQCK~RC: 8048 Qc3embl~r - t_OC~TION OEtJECT CqDE LINE SOURC LINE
. 1t41 ;
0SB0 D40B 1142 C~LL TSETl :1 bit tim~ counter ~et i~ ~tart.
1~43 ;
OSB2 B4CC 1144 C~LL REDSTB ;Input dat3 set to 84 csmm3nd 1145 ; buffer.
0~B4 D407 1146 C~LL BC~I~iC ;B-.~te counter Inc.
1147 ; -OSEt6 D422 1143 CQLL PQRCLL ;Parit~ flag cl~ar 1149 ; ~ '~LF flags cl~ar.
~50 ;
0588 D414 1151 C~LL '~LF00 1152 ; Start bit o-- set ~1~3 ;
058~ 230B 11S4 MOV ~.#11 ;###~EXT ~KEYD~'i]
058C C4EF llS5 ~P JMPR ;RETR.
~S6 ;
~157 ;
~:~se ;
1~60 ;
1161 ; ~ STOP BIT T~ . 04 C9MM~ND D~TQ P~ CONTINUE. :-~62 ; #Ct~
~3 ;
~64 ;
1~65 i ..................................... . . ..... ..
05BE F8 1166 STGN04: MOV ~ R0 :Stop bit trans.

1168 ; ...................................................
1~6~ ;
05C0 D40Et 1170 C~LL TSET1 :I bit time counter ~t ~ st3rt.
1171 ;
05C2 841~ 1172 C~LL INDQBY :Input data set to 04 buf.
1~73 ; b~t~ count~r inc. routin~
~74 ;
05C4 D422 1175 C~LL PQRCLL Parit~ fl3g clear 1176 ; ~ VLF fl3gs clear.
~-7 ;
0SC6 D414 117~t CQLL VLF00 1179 ; Start bit "0" set.
~130 ;
05C~ 23ns llal MOV Q #11 - :#*~NE:T tKEYDQY~
05C~ C4EF 1182 JMF JMPR :RETR.
1133 ;
~84 ;
1~8~ ;
~1a~ ;-------------------___ _ _ _ __ __ -1l~ P~l~TII~E---118a t 1139 ~ t RESFONSE DQTQ ~ET T9 ~4 eUFFEF. I
~ ~ '3 0 ~ ; -- ----------________----_________________. ___ ~2 ;
0SCC D403 1193 REDSTB: C~LL CNTBCK
05CE 03S8 1194 ~DD Q ~RE84C
05D0 ~8 1195 MOV R0 ~
05D1 FB 11~6 MOV ~ R3 05D2 ~0 1197 MOV eR7 ~ ;Input data cct to 34 buf.

.

` ~ 225 -ILE~ ~KI15HIGI HEWLETT-P~CK~RD: ao49 ass~mbl-r 1 3 3 8 0 4 3 LOC~TIO~ 08JECT CODE LINE SOURCE LINE

119g :
1200 :
~201 _____ 1202 :
1203 ;#**~ 04C0~-04COM-04COM-041a~-04COM-04COM-~4COM-04l:0~-04CO~ ***~
1204 1~ *
1205 1~ DISFOS~L OF 04 CO~M~ND.
1206 ;~ *
1207 :~*** ~4CO~-04Co~-04coM-04COM-01l0M-04SOM-04coM-o~COM-04coM ~*~
1208 :
1210 ;
1211 ; ( ST~RT 61T T;~. C--- 04 COM~D.
1212 ~ #D20 1214 :
1215 1 ...................................................
OSD4 F8 1216 C0~04: ~0~ ~,RO .Starf bit tr3ns.
05DS 3D 1217 ~O~D P5,B
1218 ; ............................................

05D6 D40B 1220 CbLL TSETl 1 bit tim~ count~r ~t ~Y -tart.
1~21 1 05D8 B827 1222 MO~ RO,#SDMSBC
OSDb FO 1~23 no~ ~JeRo OSDB B85D 1224 ~0~ RO,#TX8UF :T. buff~r '--- comman~J ~:04' OS~D AO 1~25 ~0~ eRO,~
OSDE B868 1226 ~0~ RO,#L~'Y'1 OSEO B013 1227 ~0~ eRO,#19 ;tL~ C-- ~CK3.
05E2 D414 1228 C~LL VLFOO :MI bit "O ~t.
- 12~9 ;
05E4 2302 1230 ~0~ ~,#2 :~**NEXT (:M100~***
OSEB C4EF 1231 J~P J~PR :RETR.
1232 ;

1 23S ~ u - ~ - -- -- u - 4 ~
1236 :
1237 ~ C 04 COMM~ND D~T~ T~
1238 ; ' #6'1 1~39 ~uu~ u~-~u-- n ~ ~ U
1~40 :
1241 1 ....................................................
O~E8 F8 1242 C0~04D: ~0~ ,RO ~Start bit T~.
OSE9 3D 1243 ~O~Q PS~P
1244 1 ,....... ................ .. ..... .... .. .
1245 ;
OSE~ D40B 1248 C~LL TSETl :1 bit ~im~ ~o~Jnt-r ~et ~ rt,, 1247 ;
OSEC D403 1248 C~LL CNTBCK
05EE 0327 1249 ~DD ~,#SDMSGC
05fO b8 12SO ~0~' RO~ :
OSFt FO 12Sl MOY ~,eRO
OSF2 88SD l~S2 ~O'Y' ROJ#TX61JF ;T~ blJff~r ~--- D~t.3 3~t.
OS~4 ~0 1253 ~OY e~o.~ :
OSFS 8888 l:S4 MO~ RO~#L~

FILE: ~KI:SHIGI HEIIlLETT-R~CK~RD: 8048 ~e~rbI~r LOC~TIOI OBJECT CODE LINE BOURCE LINE
05F~ B0q9 12S5 ~OY ~R0,*q :tL~ CK4.
05F9 C`41B 1256 C~LL '~LF01 :MI bit .. lu =~t.
1 ~S , 05F8 2302 1258 MO~ ~.. #2 :##~NEi'T ~:MI00~###
OSFD CSEF 1259 JMP J~RR :RETR.
1260 ~
t761 ;
1262 ;
~63 ;
1264 , - ----------------------------------------BIJB ROUTINE----1265 .:
1266 l C B~TE COONT 8`~TE CHECK.
126~ l 1~68 .: -- -- ---------_--- _------_________ 1269 ;
05FF B826 1270 BCNTBC: MO~' R0!#5DMSG1 0601 F0 1c~1 MO~' ~.QR0 0602 83 12~Z RET
12~3 ;
1274 ;
12~5 ;---------------------------------------------------;U6 ROlJTItlE---~2~6 ;
12~ ; C 8 ï TE COUNTER CHEl'K.
1~8 ;
~ ; ---- --------____--___________________________________ 12~0 , 0603 B868 1~81 CNTBCK: MO~ R0,#CNT6'-' :
0605 F0 1282 MO~ ~,QR0 0606 83 1c83 RET
1284 ;
12~5 ;
1c96 , ---------------------------------------SU8 ROUTINE---1 ~13;' ;
1288 : C B'r'TE COll~TER INC.
1~89 ;
1290 l 060~ B866 1292 BCNINC: ~O~.J R0~#CNT6~' 060a 10 1293 INC PRl3 060Q %3 . 1294 RET
12q5 ;
1296 ;
1297 ;---------------------------------------------------SU8 ROIlTINE---1298 ;
1299 ; C 1 BIT TIME COUNTER SET.
1300 ;
1301 ----------------------------------_--___ _----___________________ 1302 l 060B 23EF 1303 TSET1: MO~' ~r#239 130S ;
1306 ;
1307 ;---- ----------------------------------------SU6 FOUTINE--1308 ;
1309 ; t HQLF eIT TIME COUNTER SET~
1310 ;
1311 ;-----------------------------------------------------------------~ . . . .

F}LE: ~KI:SHIGI HEWLETT-P~CK8RD: 8048 ~qss_mbI~r 1 338043 LOC~TIOI~ 08JECT CODE LI~ E SOURCE LII~E
13t2;
060F 23F8 1313 TSET05: WO~ ~,#~48 1314:
0611 62 13115 TIST: MOV T.~

0613 83 131; RET
1318;
131'g 1 1320 -- -------------------------------------S~J8 ROIJT INE---1321;
1322 ; t VLF OUTPIJT D8Tfi 0 ,ET . 3 13.4 : ---- -- -- -- -- -- -- -- -- -- -- -- -- -- -- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 0614 B837 1326 VLFa 0: WOV R 0,1~DRW~PH
0616 F0 132~ 110V ~,IJR0 0617 5307 1328 ~NL ~,#0,H
0619 C420 1329 JtlP VLFOST
1330;

1332; -------- ------- -- --------- - ---------S'J8 FOUT I tJE---1334 , t VLF OUTPUT D~T~ 1 SET . ]
133~S ;
1336 , 1337 ;
061E1 8837 1338 VLFOl: 110V RO,~DRM~PH
061D F0 1339 110V ~,~RO
061E 4308 1340 ORL ~#08H
0620 ~8 1341 VLFOST: MOV RO, a _. 1343;

134S ; -------- ---- ---------------------SU8 ROIJT I HE---1347; t P~FITV FL~iG CLE~R.
1348;
1349 ; -- ---- ------ -- -- -- -- --_ _ _ _ _ _ _ _ _ _ ---- -- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ~3~0;
0622 BE00 13151 PaFCLL: MOV R6, #0 VLF f l ~- cI~3r .

0624 B86q 13!53 PlqFCLF: WOV R0~#~tlSp~R ~P~rit~J fIa~ 3r.
0626 B 000 1354 110V I~R 0 ~ # OH

13~57 1358 ----------------------------------------------------------------------------------------------SUtiRI~UT I tlE---13~9 1360 C Pf~RIT~ CHECK. 3 1361:

0629 B86B 1364 Pf~L~: tlO~ RO, #~NSP~F
0628 10 136!~ I~C 8R0 1367;

~_ 228 1 33804 j FILEJ aKI:SHICI HEWLETT-P~CK~RD: 8048 ~ssembler ~OC~TIaN 08JECT CODE LINE SOURCE LINE
1369 :-------- ------------508 ROUTINE---13,0 ;
1371 t Error respons~ 5~t to 04 buff~r. J
13,2 .
~3,3 t -______________ 1374 ;
062D 8827 1375 ERRSE5~ MOV R0,#sDnSCC ;Error in~icat~ .
062F FE 13,6 MO~ ~rR6 063q D,36 13,7 JB6 ERRSE~ ;
0632 B003 1378 nov eR0,#03H ,C abnormal error !

1380 ;
0636 8001 1381 ERRSEa: MO~ eR0.. #01H ;~ norm31 ~rror !
0638 B826 1382 ERRSEE: MOV R0.#5DMSC1 063~ 8000 1383 nov eR0~#0H
063C E48a 1384 JnP R04EFS
138S ;
1386 :
1388 ;
1389 ; ~ aCK CHECK 3 -'--- 04 COnM~ND.
1390 ; #D29 13~1 ; n n ~ ~ R n n ~ a .~ -- n .- n .. u n ~ ~ n .. ~.. ~..... n ............ - n 1392 :
1393 ; -- 063E 00 1394 aCK3~ NOP
063F 2648 139S JNT0 ~CKER ;aCk bit R~.
- 1396 ; ...................................................
1397 ;
--~6~1 D40F 1398 CaLL TSET05 ;Half bit timæ count~r sæt ~ stsrt. 139~ ---0g~3 FE 1400 MOV ~,R6 ;RCK ?
0644 D2S4 1401 JB6 ~CKSSC
06~6 c44a 1402 J~P aCKER2 1403 ; RCK ~rror.
06~8 D40F 1404 ~CKER: CQLL TSET05 ;Half bit tim~ count~r sæt ~ st.3rt.
140~ ;
064~ FE 1406 ~CKER2: MOV ~R6 064B S27D 1407 JB2 ~CEND :S tim~ ~rror C~

064E D414 1409 C~LL ~LF00 ~ ;R~-ch311~n~.
1410 ; St~rt bit "0" ~t.
1411 ;
06S0 ,314 1412 MO~ ~.#20 :~NEKT ~COM04~**~
06S2 C4EF 1413 JnP .JnPR .RETR.
1414 .
06S4 B824 1415 ~CKSSS: MO~ R0,#5DMSBK :I:command only!~
06S6 F0 1416 MO~ ~eR0 065, 325F 1417 J81 RWMOD
06S9 B826 1418 MO~' R0,#5DMSC1 06SB B040 1419 MO~ 0R0,#011)q0000B
06SD E48a 1420 JMP R04ERS
1421 ;
06SF 126D 1422 RWMOD: JB0 RDMOD ;Command ~ RD or IJR ' 0661 B868 1423 no~ R0,4CNTBY
0663 B001 1424 MO~ QR0,41H
0665 D422 1425 CPLL P~RCLL :Parity fl3~ clæ3r -~5 1 33804~
~ ~, 229 FILE: ~KI:SHIGI HEWLETT-R~CK~RD: 8~48 ~ mbl~r LOC~TIaN OBJECT CODE LINE SOUFCE LI~E
1426 ; ~ ~LF fl3~3s cl~4r.
0667 D414 1427 C~CL ~LFO0 1428 St~.3rt bit 0 -~t.
14Z9 :
'430 ; ~cqmm3n~ ~ m~ss.33~!
9669 230~ 1431 MO~ a.. ~1 0 :~*NE~T CCOM04D'~
066B C4EF 143Z JMP JMPR :RETR.
1433 ;
066D D4c2 1434 RQMOG: C~LL PQRCLL :P3rit~J fl 3~ r 143S ~ ~A YLF fl~3 .~1~.3r.
066F B%68 1436 MOV R0,4L~:t 0671 B001 1437 MOV eRO,f1H
0673 B86B 1438 MO~ R0.#CNTB~r 0675 B000 1439 MOV ~R n ! #0H
0677 D414 1440 CaLL ~LFOO 5t,3~t bit 0 s~t-1442 ~-~omm~r~ + r~spqns~!' 0679 2308 1443 MOV ~ J ~ *~NEXT CKE~D~
067B C4EF 1444 JMP JMPR ;RETR.
144~ :
067D C42D 1446 ~CEND: JMP ERRSES

1448 :
1449 ;

1452 :- ' ~CK CHECK 4. f--- 04 COMM~ND.
1453 , '~54 1 " N .. n .. n .. ~,,,.,. n n .. ,.. ,.,.. ,,.. ,.,.,.. ,,.,". n .. ,........ --.-....... -.-14S5 :

14.~6 , ........................ . ................................ .......
067F 00 1457 ~CK4: NOP
0680 2689 1458 JNT0 ~ERCK :~CK bit -h~-k.
1459 : ....................... .......... - .................... ...-....... -----0682 D40F 1461 C~LL ~ TSET05 ~H31f bit tim~ -ount.~r =~t ~ 3t~rt.

0684 FE 1463 MO~ ~,R6 :C~CK !i 068S D293 1464 JB6 ~OKCK
- 06a7 C48B 1465 .JMP ~ERCK2 1466 ;

0689 D40F 1468 ~ERCK: C~LL TSET05 ;H31t bit tim~ ~o~Jnt-r ~t ~ st~rt~ 1469 :
068B FE ~470 ~ERCKc: MO~ ~JR6 ;S tim~s ~rror 068C 52P7 1471 JB2 ~ENCK
068E 1E 147? INC R6 :Error .--~-Jnt~r In-_.
1473 : Ch~ r~ on-~~ mqr-.
068F D4 4 1474 C~LL P~RCLR ;P~rit~ r.
0691 C4a1 147S .JMF ~04CON
1476 ;
06~3 B4FF 1477 ~OKC~::: C~LL BCNTBC :~. ~CK ~ RrK o~
0695 5307 1475 aNL ~.~07H
0637 Q9 1479 MO~ R1 r ~ :

0699 D403 1481 C~LL CNTBCK
06~ D9 14C2 .YRL ~,R1 ~_ 230 1 338043 FILE: ~KI:SHICI HE~LETT-P~CK~RD: B048 ~ss~mhlcr LOC~TION 08~ECT CODE LINE SOIJRrE LINE
06~C C6P9 1433 J~ END04W :T~ op~r-~tion en~ or not ~
06E 10 1484 INC eR0 06BF D424 148S C~LL P~RCLR ~P3rit~. t`l-~g -l~r.

1487 ~ ' T~ .~p~r~tion cor~in-J~
1488 for 04 ~om ! ) 06~1 D414 148g ~04CON: C~LL VLF00 St3rt ~i~ "0" et.
1490 r 06a3 230~ 1491 MOV ~ #10 :~**NEXT ~COM04D3 06~5 C4EF 1492 JMP .J~PR ;RETR
14~3 :
06~7 C42D 1494 ~ENCK: J~P ERRSES :04 comm3nd r~cponr~ ~rror.
1495 : Error indic3tor ~t.
1496 :
1497 J ~ T~ op~r~tion en-J for 04 .~om 06~9 B826 14~8 END04W: ~OV R0 #SDMSG1 06~B B040 1499 ~OV eR0 ~0113l10000B:
06~D E48~ 1500 J~P R04ERS
1501 ;
15q2 ;
~S03 1504 5u...... ~ ~
1505 ~_----------- --------------------------------;UB ROUTINE---1S06 ;
1507 : t J~P TO HE~t PqUTINE. ]

~SOg : ------------------_--__--___________________________ 1S10 l 06~F D422 1511 DISEND: C~LLP~RCLL :P3rit- ~13g cle3r 1Sl~ : ~ VLF fl~g3 .-ltar.
06B1 B857 1S13 ~OV R0~#RE841 06B3 F0 1514 MOV ~ ~R0 06e4 F2BP 151S JB JPIDL
06B6 Z31B 1S16 MOV Q ~27 06B8 C4EF 1S17 J~P J~PR
~518 ;
068~ FF 1519 JPIDL: MO~' ~.. R- :P~spon~ fl~gs -h~._k !
06BB F:C~ 1520 JB7 PCHK.S

15~1 ;
1S22 : ~ n~ r~ ponS~ !
06BD B867 1S23 CONTDE: ~OV R0.#DEM~PH :CC-~ r.i 06BF F0 1524 MOV ~eRo 06C0 F2CS 152S J87 ~LEND
06C2 lD IS~ INC R5 06C3 64 7 1S27 JMP DMSRE :C~ continuC.
1528 ;
1S2~ ;
06~5 FF 1530 ~LENC: MOV ~.R7 06C6 D2E8 1531 J86 PRDR- :
06C8 C4F2 1532 .J~P NTDRP
lS33 !
1S34 ; ~ r~spon-~ ! ' 06C~ 53 F 1S35 FCHKS: ~NLR! #7FH
06CC ~F 1536 MOV R7.~:R~sponse fl-~o }le~
~537 ;

~S3~ :

FILE: ~KI:SHIGI HE~LETT-P~CKFRD: ~04a ~ss-mbler l 338043 LOC~TION 08JECT CQDE LINE -OURCE LINE
06CF B867 1$40 MO~ R0.#DEM~PH
06D1 F0 1541 MO~' A,QR0 06D2 F2DF 1S42 JB~ 0UESE
06D4 FF 1S43 MO~ ~,R7 06D7 C48D IS46 J~P CONTDE
1547 ;
0609 FF lS48 PF.LSFS: MO~' ~,R7 06D~ 4340 1549 ORL ~.#040H
06DC ~F lSS0 MOV R7,B

. 1~52 :
06DF FF 15S3 ~UESE: MO~' ~,R7 06E0 B2EP 1554 JBS PR~FP
06E2 C48D 155S J~P CONTDE :~ F.R~ ic~ poll 1556 , ~.R.. it-~p poll.
06E4 B2E8 15S7 PRDE'~:: J8S PRDRc :~. Priority i~/io~ poll 1S58 ; ~ F.F.drop poll.
06E6 C4F2 1'55q JMP NTt`RR :N~ t drop Gl~ot.
1560 :
06E8 S38F 1561 PRDR2: ~NL ~.#06FH
06E~ AF 156, MO~' R7,~
1~63 :
06E8 BD5E 1S64 PRt3FP: Mq~ R5 t ~QEM~P0 06ED C4FC 1-565 JMP STDPS ,~Priority or R.F.d~ poll 1566 ~ ~ priorit,~ drop poll.
1567 :1st, drop s~l~c~.
1568 :
IS69 ;-------- ------------------------- ---SU8 ROUTINE---lS70 ~
1S71 ;t RETUPN FOIJTINE.
1572 ;
1573 ; ---- -------_--- _-__ _____________ 1574 ;
06EF C5 1S75 J~FR: SEL R80 06F0 2F IS76 XCH 4,R7 06F1 93 lS77 RETR
1578 ~
1S79 :
1580 ~--------- ----------------------------;U8 FOUTIIIE---1581 :
1582 ; t NEXT ~C!:E;S t~POF SELECT.
1583 :
1~84 : -- --- -_ ---------_-________________ ___ 15Q5 :
1586 :
06F2 8t'SE 158~ NTDFP: MO~' R5.#t3EM~P0 06F4 FC 1'88 MOV ~R4 06FS ~8 158g MO~-' R0.~ :
06F6 F0 1590 MO~ R0 06F~ F2FC 1S91 JB7 STDPS :Drop ~n.i or not ~
06F9 lC 1592 INC R4 :~ not ~nd !
. p _ ~ t,, 06F~ E109 1594 JMP SETSD
S,qS ;
~6 :

~ - 232 1 338043 fILE: ~KI:SHIGI HEI~LETT-PRC~RR~: 8048 Rs~em~l~r LOCRTION OBJECT CODE LINE SO~IRCE LIt~E
06FC BC31 1~g, STGFS: MO~' R4.#DRM~F0 :f Gr-3p ~nd ' 06FE B831 1598 MOV R0.#GRMAPI) :
0700 F0 1~99 t10V a,QR0 0701 7205 1600 J63 SELSET :Grop m.ap _~t or n.~t 16l~1 ;

1603 :
1604 ; ~: N~t ~t ! !
070S ~304 160S SELSET: MOV R.#4 :~**NEXT CMTMINT~***
0707 C4EF 1606 JMP .JMPR :RETR.
1~07 ~
0709 FC 1608 SETSG: MO~' R~R4 ;f S~t !
070R a8 1:09 MO~ R0.a ~:
070B F0 1610 MOV RreR0 1l~1 1;
070C 4308 18t2 RN6I~O: ORL a~#08H
070E R8 1613 MOV R0~R
1~14 ;
070F FF 1615 MO~J RJR7 1617 ;
0712 231C 1618 MOV a~#28 :***NEYT ~DSCF64]~
0714 C4EF 1619 JMP JMPR ;RETR.
~620 ;
1~21 ;
1~22 ; - - ------------------______________________ 1~3 s 1624 ;
1625 ; C DROP.;C~N FOR 84 COMMRND. ]
1626 ; #C~2^, 1628 ;
162~ ; ......... ....... .......... ~.............. .
0716 F8 1630 DS5F84: MOV RJR0 ;G-~op s~n.
0717 3D 1631 MOVD PS,R
1632 : .......................................... ........
1633 ;
0718 FF 1634 MO~.' RJR7 071B D40B 1637 CRLL. TSET1 - :l bi~ ~im~ Jn~-r -~
1638 ;
071D FF 1639 DSCFJJ: MOV aJR7 ;F~spons~ fl~-~ 2 ~ r 071E 53FD 1640 RNL a~#OFDH
0720 RF 1641 MOV R7,R
1642 ;
0721 F8 1643 MOV a,R0 0722 5387 1644 R~L R.#087H
0724 B837 1645 MOV ROr #DRM~PH
0,26 R0 1646 MO~ QRo,a 1547 ;
0727 2304 1648 MOV ~.. #4 ;***IIEXT ~MTMINT~*~
0729 C4EF 1649 JMP J~PR :RETR.

16~0 ;
1651 ;
1652 ;"""
1653 ;------___ --------------SIJ6 FI3IJTlt~E---`- ~ 233 1 338043 fILE~ ~KI :SHIGI HE~LETT-P~CKRRD: 3043 ~ssembl~r LOCaTION 08JECT CODE LINE SOU~CE LINE
1654 ;
16S5 : t VLF INPUT Q~T~ N 1 N SET.
16~6 ~
1657 ; ------_--_----___ --__ _____ 1658 ~
072B 97 1659 ~LF11: CLR C
072C a7 1660 CPL C
1661 ;
072Q F8 166Z VLFRST: MOV ~,R3 : -072E 67 1663 RRC ~ :
072F qB 1664 MOV R3, a 0,30 83 1665 RET
16~6 ;
1~67 ;
1668 l---------------------- ----------------------------------1669 ;-----------------------------------------;IJ6 ROUTINE---1670 ;
1671 ~ ` t ~LF INPUT D~T~ ~ 0 ~ SET.
1572 r 1~73 . -----------_---___________________________ 0731 97 167S VLF10: CLR C

1~77 ;
1678 .
1~7~ ,..... u... u.. uu......... n ........... ,... ,.u 1~80 ;
1681 ~ < I~IT for 84 COMMRNQ tJISPOSaL.
1~82 ~
1683 ; .... u... u~
1684 ;
0734 040F 1685 rPLlNT: C~LL TSET05 :Half bit tim~ ~_ount~r s~t ~ _t,art 0736 B857 1686 MO~ R0,#RE841 ;84 buff~r ~mpty.
0738 F0 1487 ~O~ a . e~l3 1 Ijl39 1690 ;
073B 84FF 1691 C~LL BCNTBC E it 04 op~ratlon.
0,3Q FZ4S 1~92 J87 ST04QP
16g3 !
d.-3F 2318 1~4 MOV ~.#27 ~ *NE:~T tIPLINT3*~*
0741 C4EF 16~S JMP JMPR
1~6 ;
0743 C4Ba 16~7 QNTSET: JMF .JPIQL ;C34 but~f~r ~Nmpt~
16~8 :
1~qQ :

074S FF 1700 BT04PP: MO~ ~,R7 0746 4301 1-01 ORL ~.401H
0748 ~F 170 MOV R7~ :
0749 E459 ~703 JM6 INT045 1704 ;
1705 ; - - -- --- -----_-____________-____________________ 1-06 ;u---~ """"~"" N ~ " " " " " " " ", 1707 :
1708 ~ C CH~5IN5 OPER~TION TO 84 .3 1 ~ 0~ ;

FILE: ~lKI :SHIGI HEI~LETT-P~U-:~RG: ao4a ~s~mb1~r LocaTIoN osJEcT CODE LINE ,OCIPCE LINE

1712:
1713 .: . ...................................................
0,48 F8 1, 14 NDP804 M13~,' fl.R0 0,4C 3D 1-1S MOYG P5~ ;

074D D413B 1,18 c~LL TSET1 :1 bLt tilo~:r .-.~-~r-t~r :~t, ~ -t.. ~r~t 1 . 1 ~ ~
074F FF 17 20 n~t-~c2: MOY ~.R7 o~so 12S4 1,21 Jso ~RIWT .:
07S2 c4aF 1722 J11P C~ISEND
0,54 s3FE 1-23 ~P~IIdT: fiNL ~.. #OfEH
0, 5~; ~F 124 MOY R . fi 075B E434 1~2S .JMP rDLlNT

17~6 1~7 ~____________~_______________________ --------------'.lJ~ F~JTI~
1,28 ~
l,29 ~ t 04 GPOP SELECT.
1l31 :
1~32 :
07ss Bs2s 1. 33 rNTl34s MOY Rl3~#sclMsoH
07SB FO 1, 34 no~ R0 07SC S307 1, 35 ~NL ~.#0~-H
075E ag 1,36 MO~;' R1.
07~5F B837 1,3, ~oy RO. #C~RM~PH
0761 FO 1,3~3 no~ ~e~o 0762 5307 1 f 39 ~NE ~.#07H
0764 Ds 1-40 XRL ~ R1 0765 C67B 1,41 J~ NOCHBE
1,42:
0767 F9 1743 MO~' ~ R1 0769 430a 1.44 l~RL ~#0~H
076a a8 174S MOY RO.~ :

076B FF 1.47 Mq~ R7 076C 3272 1748 Js1 C~8F134B
174q 076E 231t~ 1-50 MO~ .#2q ~ E.~T tc-~n4~3~*~
0,70 C4EF 1.51 JMP JMPR - PETR.

0,72 53FD 1,S3 c~sFo4e: ~NL a!#oFDH
or74 ~F 1.54 ~ R7,f~ :

17~7 175a:

1761 : t DROP SCl~tl FOR 04 El3MMf~NC.
1762 : #E-'?

176S ~ ....... . ...................... . ............. .....
0777 F8 1.66 DSF041:: MO~ . Rl3 07,% 3D 1767 MOYG FS.f~ :

~` ~ 235 1 338043 fILE: ~KI:SHIGI HEWLETT-P~CK~FD: 8048 ass~mblcr LOCaTI ON OB0ECT CODE LINE 8glJRCE LINE
1768 ; ...................................................
1769 ;
0779 D40B 1770 caLL TSET1 ;1 bit tim~ c~lJnt~r s~t.
1771 :
077B F9 1772 NOCHGE: MOY ~, Rl 077C B837 1773 MOY R0,.#DRMaPH
0~7E 20 1774 XCH a~Ro 077F B86C 1775 MO~ RO.#saYGFF
0,#1 ao 177~ ~o~ eRo~a 1777 ;
1778 :
0782 D422 1779 caLL PaRcLL :F3rity fl3-~ c 1780 : ^~ ~LF t 0784 D41S 1, 81 caLL ~LFO0 St.~--t. ~3~ t s~t.
1,~2 :
078~ 2314 1~3 ~O~ #c0 :***~E:I'.T t,:or~ ***
0,88 C4EF 1784 JMP J~PR :RETF.
1785 :
178~ ~ _ 1787 ~---------------------------------------------------SU6 Rl-3UTINE---17%8 ~.
1789 ; C 04 COMM~Nt! G ISP E~-lt!. i 1790 ,.
1791 :------ - - --~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1-92 ;
07sa Bs6c 1793 R04ER8: MO~ R0~#5~JDRP
078C F0 1794 ~ MO~ a~eRo 078D B937 179S MOV R1~#DRMapH
078F 21 1-96 XCH Q~QR1 0790 ~8 1797 MOY R0,a 1798 :
07g1 FF 1799 MO~ ~.. R7 0792 s2a7 1800 JB2 TSVCIN
1801 , 0794 F1 1802 ~O~ a,eR1 0795 D8 1803 XRL a~Ro 0796 c6aE 1804 J2 MaDaDE
1805 ;
n7~8 a867 1806 MOY RO, #DEM~PH
079~ F0 1807 MOY a~eRo 079B F2aC 1808 JB7 TS1JCI2 ~ :
1~09:
07?Cl F1 1810 MOY b,QR1 079E S307 1811 ~NL ~,.#07H
07~0 s308 1812 ORL a~#o8H
07a2 as 1813 MOY Ro,.a ,:
07a3 ~1E 1814 ~OY ar#3o 07a5 C4EF 181S JMP J~FR
07~, s3Fs 1%17 TSUGIN: aNL ~,#OFBH
07a? ~F 1818 MOY R7.
1819 ;
o,aa C4F2 1820 JMP NTDRP
07aC C4~F 1821 TSUCI~: JMP DISENG
1822 :
07aE E44F 1823 MaD~DE: JMP Macl~D2 1~24 :

FILE: I~KI :SHIGI HEWLETT-P~CK~RD: 8048 assembl~r LOC~TION 08JECT CODE LII~E SOURCE LI~E
1 ~2S

18~6 ------------ ----, ------------------;IJ6 R08T INE
1 ~27 t8Z8 J t CHaNGlNC THE CE~:ICE M~F ]
t 829 1830 ~ -- -- -- ------ -- -- _ _ -- -- _ _-- _ _ _ _ _ _ _ _ _ _ _ _ _1g31:
1833 ........................... .............................
f 834 HEQD aDDREss T~RLE OF THE DE'~? I CE t1~
183S; ............................................. ..
1836 ..
07B0 38 1837 ROMTI: D8 DYt'110 :Grqp #0 ~: do.~ 3p 1 ~ .
1838 .: I
0781 3D 1839 DB D~r1111 : Grcp # 1 ~ n ~1840; 1 078Z 42 1 ~41 DB DVM12 : Dr.. p #- ~ " n 0783 47 1843 DB D~.~M13 ;C,~p #3 1 ~44 ; I
07B4 4C 184S D8 DVM14 : Gr-~p #4 r' " ~ .
1846 ;
07B5 51 1~47 D8 DV1115 :Dr~p ~5 1848 ; I
1%4~; 111111111111111111111111111111111 1850;
0786 8837 1gS1 DEYCH: MOY R0,#DRt1f~PH :G~icc ~.. 3ble h~3d 3~ r~33 3~t.
0788 F0 18S2 hOY a,eR0 ~ r ~~urr~nt .~rop #. ,~
07B9 S307 1~53 aNL ~,1tq7H
07B8 0380 - 1854 aDD a.#ROMTI
07E~D a3 1 a5s r10vP a, Qa 18Sr, 078E ~9 18S7 MO~? R 1. ~ :
07BF F118S8 MOY a . QR
07C0 72F8 18S9 JB3 PUEND :D~ ic~p-~llin.~ m3p 3.~t, .~r r.. ~t.
07C2 F9 1860 hOY ~Rl :Prlorit,~ r r-~un.~ r-.bin ?
07C3 0304 1861 ~DD ~#4H
07CS ~8 1862 t10~r' R o, ~ :
07C6 F0 1 a63 MOV a . QR0 07C9 FF . 186S t1OY ~ ~ R7 -, F.' l I i n~a ~`1 3~a -3~ct . ~ un!~ r.~b i r, . '~
07ca S3EF 1866 ~NL f~ . # OEFH

1 %~8 07CE FF 1869 PRSET: MOY ~,R, :P.~ n.a t~l3.a S~t ':pr loritl~ p.
07CF 4310 1870 ORL a, #1 OH
07D1 ~F 18;'1 RP5ETE: MO~J R7, a 07D2 B85E 1873 MO~ Ro.. #DEMaP0 R0 = ~ ic-~ m3p ~ p.~intor.
07U4 B~00 1874 MO~-' R2~#0H :R2 z F.f f`l3 1 ~7S J
07D6 Fa 1875 DEYPS: MO~ a~ R2 07D7 96DE 1 a77 JN- s~Pac 07D9 BaFF 1878 MOY R2,40FFH
07DB F1 1879 NOY a.~R1 :~ bit 0 - 8 :

1881;

,~_ 237 1 338043 FILE~ ~KI:SHIGI HEWLETT-F~CK~RD: 8048 ~s3cmbl~r LOC~TION 08JECT COt!E LINE 801JRCE LINE
07DE B~00 1~82 5W~OV ~2,#0H :~ bie q -07E0 Fl 1333 rtov ~,QRI :
07E 1 47 1384 Sw~P

1a86 :
07E3 530F 1887 CONCT: hNL ~,#OFH :map ~ :--- map 1.
07ES ~o 133a rtov eRo~ :
07E6 D30F 1839 RRL ~,#OFH
078 C6F2 t8~0 J~ DE~CE ;t~ c~ ~ng 07E~ F8 1891 MOV ~,R0 07EB D36S 1392 XRL ~#DErt~p7 G~ map ond 07ED C6F3 1 ag3 JZ DEVCE2 1 8g6 07F2 C8 1397 DEVCE: DEC RO
07F3 F0 1898 DEvCE2: rtov ~,~R0 07F4 4380 1899 ORL I Pt,#80H
07F6 ~o 1~00 rtov / eRo~ ;
07F7 83 190t RET /
1~02 : /
07Fs B8SE 1903 PUEND: MOV R0,#DErt~Ro :D~ice map I n~t -et.
07F~t BOFF 1904 rtov eRo~#oFFH

1~06 :
1~0~;
'~0~ : #~ ## E~t~ ###~
Errorc~ 0 '- 1 338043 H C ~ pr ?n?~ ; n l ` ~
~n~CrE LI~E
~,:
2 ;
3 ~*~ *~*~ , J ~ * ~ r ~ * ~ *
4 ~ -5 SEI~ D: ErJU 01H
~6 SE15~U r~rl: EQU 12H
7 SEI5~111 ;i: E~U 5~H
8 SEI~KU_YY: EOU ~ uereiqn Nq.
9 **~
0 :**~* <'~: TosHr~c~ r,5 ~,~
*** <.~C TOSHI~ NO 00 ,~
12 ;*~*~* ~ ' TOSHI a INO os 13 **~ : TOSHt NO OS ;`~
14 *~~ .___, . ======
t~ *~* ~ Data Form3t -16 ;~**** adrs H ~ ECU ~ddrcec H
17 ;***** ~drs L --- ~ EC~ ddr ec5 L
18 #*#*~ Data L~n~th

19 1#**~* t3~t~ 1 0 -- ~ * # ~.
21 :***** . ~ Dat~ r~p P C~mm-~nd ~' D~ta 3 ZZ ; ** **
23 :***** Data N
24 ;~**~* ~ -- B~ ~.T~ T.~ UE ------~ ;*~*~*
26 :~**~*
Z7 ~*-** Function 28 ~***~
28 ;*~*** ~l~ --- CCC ~ ECU C~mmmunica~ n 30 ;##*~ Echo Back 31 ;~ * Forccd Tunino i O~ H K~
32 ;**~** Scnd Functic.n ~. ~LOH~ ~) Test 33 :~***
34 :##~* ~ 2 3 ~~~ Pam Back up 3~ ;~***~
36 :#~*~ ~3) --- Veri~ication 37: ~:#*:"*
3a ;*****
39 ;***~
40 ;*~**
41 ;-~*~***~**#****~***~*~**~****~*~*~ *~**~*~********~*~
42 :SSSSS
43 ;SS*~S ~ Bus Eist 44 SSStS
4~ ;SS*SS
46 ;SSSSS
47 ;ssSSS
4~ :SSS~S
49 ;SSSSSS*ssSSSSSSSs*SSSSE~$**S*SSSS-S*sSS*S-SSSE~l~*l;*ESSS*SStSS*s*sSs*
5 :
SZ BI~S: EQU 0000 53 :

55 FROGR~MYERSI9~: EQU el~S ; t3S 4 56 R~_cRr:_ERPoR: EQII BI~J+4 ; t35 4 S7 R~ CC'C_Q~_YO: EQIJ Bl~;~B : DS 4 , _ APPEND I X C

HE~LETT-FRCKRFD: 8086 Rs~bl~r SOIJRCE LINE
58 IBF_O"EF~_FLd~: EQU BIAS+l.s : DS 2 S9 SCRN MOQE FLRG: EQU EIRS~14 . DS 1 60 VIEW_CHRNNEL: EQU BlhS~16 : DS 8*7 6t PC_COQE: EQU BIRS+3_ : D, 8~c 6~ E'~'ENT_CH~NNEL EOU BIRS+4- ~ DS
63 ; EQU BIRS+S6 64 YLF ERROR_MRP: EQU BIRS+12~ ; DS 1:8 65 PC_FC_LIST: EQU BlRSt'S6 : DS 178 66 BRSIC_RUTHO: EQU BIRS+256+1~ : DS 128 67 ; elRS+512 6~
71 ;
72 ~;0OH: EQU ~0OH
73 CH_NO_FREQ EQU ~200H , DS ?56 FF.EQUENC`,' T~BLE ,TRPT FFBM HEFE
74 TIME TRELE: EQU R200H+100H 3 8~8~2 75 JUMP_~DDRESS: EQU ~?00H+1~0H ; 8-~8#2 76 NEXT_GO_~DRS: EQU d200H+200H .: 64#2 77 , --- 48 OH
78 TO DROP: EQU 0500H
7~ TO_CCC: EQU 0600H
80 ;
81 DS2: EQU 0700H
82 INDEX_RX_l: EQU DS2~ ?~1 83 INDEX_TX_1: EQU DS2+~2 84 CTRL_1: EQU DS2+2~
8S CTRL_l_COUNT: EQU DS2+ ?~4 86 INDEX_RX_2: EQU DS2+2~5 87 INDEX TX 2: EQU DS2+ ~6 88 CTRL_.: - EQU DS.+2~7 89 CTRL_2_COUNT: EQU DS2+2*8 90 P~GE S~: EQU DS2+2*9 91 ECHO_BbCK FL~G: EQU DS2~s~10 92 RE~ERS_CH~NEL: EQU DS2+~
g3 TX BUSY fLRG: EQU DS2+2#12 94 B~SE_PqINT: EQU DS2+ *13 95 I~IT_POINT: EQU DS~+c*11 96 8INRRY LEG: EQU DS2+2*15 97 ECHO_e~CK_~DRS: EQU DS2+2~1B
,q8 93 CONY NO: EQU DS~2~18 100 DROP_NO: EQU DS2+~
101 IC_BYTE: EQU DS2+c*cO
102 DE~ICE_NO: EQU DS~-2~cl 103 ID B'tTE: EQU DS~+2*2--104 CONY_NO_BIT: EQU DS2+2~23 105 DROP_NO BIT: EQU DS2l2~c4 106 DEYICE NO BIT: EQU DS-+2~-s5 108 MUL ~DR EQU DS2+2*29 : QS 2 STORE #3 10g EXTPN STRT EQU DS2+~30 : DS 2 110 TEMP_R_CH EQU DS2+-~s~31 , QS 2 112 ~ 740H
113 OBF_BF_N: EQU DS2+2~.;2 : 0000 0000 114 OeF_BF_C~Q: EQU ~EF_BF_N11 , . . . . . _ , . . .

` ' ;-- 240 1 338043 HEI~LETT-P~C~ARG: B03C A~m~ I ~r SqURCE Llr4E
115 OBF_BF_ID: EQU 08F_BF_t4+-116 OBF 6F EYTE: EQU 08f_6F rl+-- 117 Cor4~_SELECT: EQU OEF_BF_r~+16 : DS 3 1CO DS1 ! EQU O,SOH
121 NOW EYENT: EQU DSl 12~ EEFOR_E'.'ENT: EQU DSl+1 1~3 EWENT_ENABLE: E~U DSl~--1~4 l~S LS8_LED: EQU DSl+4 1-6 ~S8 LED: EQU DSll.
1~7 HSB_LEQ: EQU DS116 128 PPY_LED: EQU DS1~.

130 KE't DATa~; EQU DSl~
131 ONE_SEC_TIMER: EQU DSl~10 -' 132 TUNER Gl: EQU DSl+ll 133 TUNER_D2: EQU DS1+12 .. 134 TUHER_CBL: EQU DS1+13 t35 UP_FL~G: EQU DSt+14 13C DOWN_FL~G: EQU DSl+15 -- ,137 PC FC EXIST: EQU D51+16 138 POWER_FEED: EQU DSl+17 13g :

142 D516: EQU 300H
143 DROF_CMD_BF: EQU DS16 : DS 16 -144 SPU_C~D_BF: EOU DS16+16~1 : DS 16 145 FROM_OBF_BF: EQU DS16+16~2 : GS 16 147 SEND_ENABLE: EQU DS16+16~3 ; DS 1 148 SEND aDc~RESS: EQU SENQ_EN~BLE+l : C'S
149 SEND_INDEX: EQU SEND_QDQRESS+Z : DS 1 150 SEND CMD RESP: EQU SEND AQDRES5~3 : DS 1 lSl SEND_DATA_BIJFF: EQU SEND_ADDRE~4 : DS 1~3 15~
153 E~ErlT_NO_FREQ: EQU 900H : C~S -'56 lS5 1~7 :
158 : ----- ___ _ 1~9:
160 KE't_DATa_STACK: EQU 100l1H ~ QS 16~61=lljc4 161 ECU_aDDRESS: EQU YE'-'_C~TA_;T~C~`+16~64 : DS .
162 TX_LENCTH: EQU ECU_ADDRES5~2 : DS 1 163 TX_COM~NQ: EQU Eru-ADD~Ess+3 : DS 1 164 TX_BUFFER: EQIJ ECU_~C~DRESS+4 : DS ~5 16f 1 163 TI~ER_COUNTER: EQU :~OOOH-4 16~ INDEX HlSTOR't: EQU OOOH-~
1~0 HISTOF't_BUFFER: EQU 2000H
1, 1 .

~ "~

t7E~LETT-P~CK8PD: 3036 ~emb1er SOURCE L I ItE

174:
17S P~GE_t1Et7: EQU 3000H

177 SThCK END: EQU 39FFH
178 STP~CK_TOP: EQU 401)0H
17g;
1 S3 0 ~*##**~*~K~Ic** 61qCK UP l?~t~7 hr~ 3 *:1'**~ :***~ :**t ~ * K*******":, *, ,~**

182 ES_B~CK_UP: EQU 0 : CS S1 ' 183 ES_BhCK_lJp 1: EeU 20 bH : C S ,1:
184 ES_BhC,";_lJP_' EQU 40OH : DS 57_ 186 ES_E''ENT_TIt1EP : EQlJ 6013H : CS 1 -':;*6 188, 189 : ***#*~***** I med i 3t,~ C~ 3tb :K** K* K******~* K* i*** ~-**~*# .****:~*:~*
190:
1 g 1 t1UL_NO EOU 3 192 TIt1ER OUT CODE: EQlJ b 193 PLUS_KE-'_I I~DE: EQlJ 10H
194 E'~'ENT_KE-~_CODE: EQU 11H
195 ~UTHO KE'~' CODE: EQll 1~H
1g6 0170FF_1 E't_CODE: E~U 13H
197 t7INUS_l'E't_COCE: EQU 14H
1~8 SChN kE-t CODE: E12U 1 SH
CLE~_t; E','_COC:E: E13U l 6H
200 SEND KEI' COC`E: EI~U 17H
201 pOl-lER_ON Cac E: EQU 18H
202 POllER_aFF_COCE: EQU 1 gH
203 RECENT 01~7 CODE: EQU 1 hH
204 RELEhSE_CODE: E~U 1 BH
;20S KE't_PU-;H_CODE: EG~U 1 CH
;~06;
207 ~SCII_ER: EQU 4!572H

20~ hSCII_hlJ: EQlJ 4155H

20~ hSCI 1_5l-: EaU S34:3H
210 hSCI I_FC: EQU 4643H
211 h CII PC: EaU 5043H
212 PSCI I_CL: EQU 434CH
213 hSCII_,E: EQU 5345H
214 asc II_f~D: EQU 4164H

21 S ~SC I I_DE: EQU 6445H
216 asc I I NlJ: EQU OD49CH
217 asc I I_~J13: E~U 0D4DCH
218 f~C rl co EaU 43CCH
21g hSC I I_PP: EQU 50~2H
220;
221 PUSH f:LL: EQU 60H
222 POP_hLL: EQU 61 H
223:
224 SEND 11h:': EQU 64#2

22~
226 ; -- ------ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 227; ##~*~ O Fl~rt~ **J*~******:~****`~************~*~'*'~*~*
228;
_ _ .. _ .

HE~LETT-P~CK~RQ: 3086 ~ss~m~l~r SOURCE LI~E
c2~ :
230 QROP CMQ_PORT: EQU 082H
231 QROP_~T~_PORT: EQU 080H
232 ECU_H_~QQRESS: E~U 0102H
233 ECU L_~QDRESS: EQIJ 010OH
234 INT_OFST EQU O~OH~CS~4 23S II~T10FST EQU ~2 236 INT3~FST EQU 6b 237 TIMERl OFST EQU 7' 238 aCHD EQU oo 239 ~CHC EQU 04 240 BCHQ EQU Oc 241 8CHC E~U 06 f 243 246 ~ CS SET-------------------------------247 , 248 : INITI~L SET UP I~PX186 24? :
250 ; ~ - -------_______-__ ____________ ~251 ORG OOOOH
0000 F~ ~52 RUN: CLI
253 :LCS SET UP 161'6 0001 B8~2FF 254 MO~' ~X,OFF~2H
0004 92 ~55 XCHG GX~aX
0005 B8F800 256 MO~ ~X,OOF8H
0008 EF 2S7 OUT - DX.~X
258 :PCS SET UP FROM OOOOH RT IXO M~PRED
0004 B8A4FF 2S9 MOV ~X,OFF~4H
gOOC 92~ 260 XCHG QX.~X
OOOD B83F00 261 MO~ ~X,nO3FH :3-lJ~lTE; I~l,ERTED
0010 EF 262 OUT QX.~X
OOtl B~8FF 263 MOV ~X.OFF~8H
0014 92 264 XCHG DX.~X
OOIS B83C88 265 ~0~' ~X~883CH
0018 EF 266 OUT Q.~ X
267 ;MCS SET UF 040l30H
0019 B~6FF 268 MO~ DX,OFF~6H
001C B8FC21 269 MO~ ~X,21FCH
OOlF EF 270 OUT DX.~X
Z71 :
0020 B80020 272 MO~ ~x~ 2000H
0023 8ED8 273 MqV QS,~X
274 :
275 :
0025 BBOOOO 276 R~M_CLE~R: MO~' BX.BI~S
0028 B80000 277 MO~ ~X,O
002B 8907 278 R~ CLE~R LP: Mo~ CBX~ X
002D 83C302 279 ~DQ 8X,2 0030 81FB0040 280 I:~P Bx,4nooH
0034 7ZF5 281 JC R~M CLE~R LF
282 :
c83 ;
284 :-------------JU~P T~BLE ~.IFITE-------------------0036 880000 2c8~ ~o~ "~

~- ` 1 338043 HE~LETT-PHCKqFD: 8088 ~s~5m~51~r SOUFCE LI~E
0039 8ED8 286 MOV C8. RX.
287 1--------------I-IT1 HDDR.----------- --0038 8B3400 288 MO~' 8X.INT10FST
00-3E c7n70002 289 - MO' W13PD PTF' tEXl.200H
0042 C7470200FE 290 MOV hlORD PTR tgX~23.0FEOOH
291 ,- - INT3 aDDR. ------------------------------004~ 883C00 292 MOV B~ T30FST
004a C7070003 --93 - MOV WOPC; FTR t6X3.3130H
004E C7470200FE 294 MO~ WqRC PTR t6X+`~.OFEOnH
295 ,-- - INTO aDDR. XCHSI:HDEC~ TH I~T~XINTHO.~'----0053 888400 296 MO~ BX.INT OFST
005~ C71)70004 297 MO'~ qRC PTF C6`'~.4ll13H
005a C7470~00FE 298 MO'~ WqRC PTF CB:'+_J,OFEOOH
OOSF C74-040005 ~99 MO~ OF'C PTF C6:-:+4~.~00H
0064 C74706nOFE 300 MOV l.IQRC; FTP C6:-'+63.l3FEOnH
0069 C74.0801306 301 MOY WORr! PTP C8:X-8~.6013H
OO~E C7470dOOFE 30. ~o~J IJIOF'D PTR C6:~1b~.0FEOOH
503 :--------------TIMEP f INTR. ~DCP.-----------------------0073 BB4800 304 MO~ EX.TIMEF:I OF5T
0076 C70-0007 . 30S MOV WORC' PTR CBi/3 r ~ QOH
007a C7470,00FE 306 - MOY I~ORc RTR CE:~.+~.OFEOOH
30. 1----- - SET UP TIMER-----------------------308 ;
30~ :
007F 8811020 310 MO~' HX . cOOOH
0082 8ED8 311 MO~ DS~
0084 8ED0 312 MO~ ;S. H'.~
',13 , ------- 50KHz SQUHF`E W~'.'r---------------------0086 8~S2FF 314 MOV C:`:.OFF52H
0089 88OF00 '15 MOY HX . 1 5 008C EF 316 OIJT LX.~:
008D 8dS4FF 317 MO~.J D.`'.OFF51H
0090 880F00 318 MOY ~X.15 0093 EF 31~ OUT C'O.~X
.0094 3a56FF 320 no~ D:1.0FF56H
009~' B803CO '21 MO~ ~:-:.00.003H
005q EF 3c2 OUT CX.~
323 :--------------INITI~L SET UP OF CM~ OH.13:R:' TFH~S---3~'4 :-------------SolJRCE POI~TER-----------------0096 680000 325 MO'~' H'~ CHC-OO~E 6~COFF 326 MO~ D:'.13FFl;OH
OOq1 EF 327 OIJT D.`' ! ~X
00~ BOOO 328 MO'~' HL~O
OOA4 BHC~FF 329 MO~J D:X~lJFFI:'H
OOd7 EF 330 OIJT D-' dS~
331 :---------------INITIaL 3ET UP liF CMh OH.I-T:i' TFHH-.3--332 : DESTI~HTION P'5INTEF-----------oon8 B50000 333 MO~' ~Y.HI:HC' OOdB 6dD4FF 334 ~3~J C:`',OFFC4H
OOdE EF 335 OUT D'.`:~
OO~F 8000 336 MO~' qL,O
0081 8aC6FF 337 MO~ DX,OFFD6H
ooe~ EE 338 OUT DX,qL
339 , -~T~CK SET UP----------------------008S 8CF03F 340 MO~ SP.3FFOH
341 J------ IHlTlaL SET IJF OF 8c~4-----------0088 8018 342 MO~ HL,00011nOOE :CH.RESET

HE~LETT-FPCK~RD- 8086 ~ t.l~r SQUVCE LINE
ooBR E604 343 OUT aCHC.aL
344 :--PTR ^a--ooBC BBq231 34S nov 8X . OOl 1 0001 OOOOOOI OB
OOBF BaO400 346 noY G::.PCHC
ooC2 Es7Eo1 347 C~LL SETcon 348 :--PTR ^B--ooC5 BB022s 349 noY EX . OOt 01 oOOOOOnOol OEooca B~0600 3So no~ G::,BCHC
oOCB E87Sol 3Sl C~LL SETcon 352 ,--PTR 4P--ooCE BBq420 3s3 nov Bx"3qlOOOOr~OOOOOtOoB
oqD1 Ban4oo 3S4 no~ C~X.aCHC
oqo4 E86C01 3SS caLL ,ETcqn 3S6 ;--FTR 4B--OOD~ BBq420 3S7 nov BX.00100000000001 OqE
ooDa BaO600 3ss nov DX,BCHC
OODD E86301 3ss caLL SETCon 000 BBo77E 361 nov BX,0111111000000111B
ooE3 Bao400 . 362 - no~ DX,aSHC
OoE6 Essao1 363 SRLL SETcOn 364 J- - PTR fB--OOEs 8EtOlOS 36S nov BX,OOOOllOOOOOOOOOlB
OOEC Bao600 366 nov DX, BCHC
OOEF E8S101 367 caLL SETCon 368 ;~ -RN IN I t ~
OOf2 BOlo 36g nov ~L, 000100006 ooF4 E604 370 ~UT ~SHC,RL
371 --FTR I a--ooF6 BBo12C 372 no~ BX!0010110000000001B
OOF9 B~0400 373 nov DX, PCHC
oOFc E8-401 374 C~LL sETCon 3,~ --PTR sa--OOFF BBOSE2 376 nov B~,1110001000000101B
0102 Bao400 377 nov ~X,PCHC
0105 E83eo1 378 Cr~LL SETCOn 37g; - -RTS OFF--0108 BBqSE2 'SO nov BX,1110001000000101B
010B Bao400 381 no~ DX,r~CHC
010E E~3201 382 CPLL SETcOn 383 r~~~~~~ ---- ______________________ 384 ~ INlTlaL SET uP .-~F INTO, INTI ~ INT3 UNM~8K-- - --- - ---- - - ---38S J--INTo---olll 88,~00 386 ~o~ q-~:,s~H :LE~.~E~ .EC~I,E ~lr;r;E~.M~ c 0114 s~3sFF 387 nov GX.qFF38H
Otl7 EF 388 qUT D:l.PX
389 ~--INT1---0118 Bslalo 390 nov QX. tr~H LE~;EL~I.LE~EL TRCI;EF. MPSK
011B 6a3aFF 391 nov Gx.oFF3PH
OIIE EF 392 OUT G,i . ax 3~3 ;--1~tT3---011F B81qO0 3g4 nov px~lsH :LE`'EL=2,LEVEL TFr;l;ER.MP~K0122 Ba3EFF 3~S nov GX. OFF3EH
ot25 EF 3q6 OUT CKo . Pi:
3~7 ;--TlnER1 INTR.--0126 B80EtO0 398 nq~J~X,Iol lE LE~.~EL=3.~uS
012g Ba3.FF 3sg ~o~ c~x~ OFF32H

~ ~ 245 l 33-8043 HEWLETT-P~C~:~RD: ~086 ~s~-~bl~r SOURCE LINE
012C EF 400 OIJT QX.~,J

4~4 40~

417 : . .
418 ; - _-----_-________ ____________ 41~ :
420 : Initi.31i-~
42t :
422 ; -----------_-_-______________ ___ 423 ;
012D 880000 434 M~IN_8TbFT: MOY ~XJ O
425 :
0130 BE0005 .426 MOV BX,TO QROF
0133 891E0207 427 MOY CINGEX_RX_l~.BX
0137 891E0407 428 MOY CINGEX_TX l~.EX
0138 ~23E07 42,4 MOY BYTE PTP CTEMP_R CH~.~L
013E ~21807 430 MOY CTX_E118f_FL~8~J~L
0141 ~22407 431 MOY CCON~:_NO~L
0144 ~29107 432 MOY CPOIJER_FEEQ~J~L
433 ;
0147 ~35007 434 MOV CCON~_iELECT~,~X
014~ ~3S207 435 MOY CCONJ_8ELECT+2~!~X
014G Q3S407 436 MOY CCON-_8ELECT+4~.~X
0150 ~35607 437 MOY CcoN;--~ELEcT+6~!~x 438 :
0153 BB0006 434 MOY eXrTO_CI:C
0156 891E0C1~7 440 MOY CINQE _TX_2~.E:
01.5~ 891E0~07 441 MO- CINQE.~_RX_-5~.EX
442 :
015E ~20607 443 MOY CCTRL_1].~L
0161 ~20807 444 MOY tCTRL 1 0QIJNT~.~L
0164 ~20E07 445 MO. tCTRL_ ].~L
0167 ~24007 446 MOY tOEF_EF_N~J~L
016~ ~31407 447 MOY CECHI:l EhC~;_FL~I~.h:^ -016G ~31~07 448 ~O~ CRE'.'ER;_I-H~NEL]J~X
44~ :
0170 B80030 4S0 MOY ~X.F~GE MEM
0173 ~31~07 451 ~ CP~GE_~w~! H
4S2 :
0176 BB4107 453 MO~ EX,OEF EF CMD
0179 9lE10n7 4S4 MaY CGTRL 2 COIJNT~,C:lJ.
1~5 .
017D BOq~ 4S6 MO~ ~LJ1O

~` ~

HElJLEtT-P~C:K~Pt) 8086 ~c~ bl 1 338~43 SOI~ E LINE
017F ~28~0~ 457 MO~ tONE_8EC_TIMER].~L
459 :
0182 B8Q020 459 -MO'~ ,HI'iTq-;~_SUFFEP
0185 ~3FElF 460 MOV tlNPEX_HI'TqF;],~.
0189 E98205 4Ol C~LL ECU_~GFS_PE~G
462 , 018B E8D605 463 C~LL INIT_~lJTHq_Tt~L ,2 013E E8F305 464 C~LL INIT_~IEI~_TeL `=
0191 E84806 465 C~LL INIT_CODE :=
0194 B03f 466 MQ'~ ~L,3FH :=
0196 ~2nE00 46' MO~ [SC~N_MqC`E_FL~G~ L ,2 4~3 4Og 0199 E85606 470 C~LL FPE~ C~LC
Ol9C E8D306 4rl C~LL CHhNNEL_HqSEI
019F E8FC05 472 C~LL EVENT_t1hT~_CL
Ola2 E89705 473 C~LL INIT_E'i_TIMEP
474 ;
475 ,==z=========================_================
4r6 :
01~5 BB0004 477 ~OY 8X,ES_P~I`K_llP_2 01~8 26813F~S~S 4.-a CMP lJOPt! PTP E'-;:[e`~ ,0~5~5.H
OI~D 740~ 478 . JZ B-iCK_I!P_~ql 01~F BB0002 430 MO'~ 8X,E;_8~CK llp I
0182 26813F~5~5 431 CMP lJOkt) FTP ES:tt'.~,Q~5~5H
01B7 7542 4'2 0NZ B~CK_UP_EXIT
0189 8BF3 483 8~C~_UP_K~I: MO~ Sl.ex 018B B8FC01 484 MOV ~X,508 OlBE 890000 43S MO'~ CX,0 01C1 26326F04 486 P~C~_UP_CKl: XOk CH,ES:tt-`:rl4 01CS 26024F04 48- ~DD CL,ES:tSX+l~
OlC9 43~ 438 INC 8X
01C~ 48 489 DEC ~X
01CB 75F4 490 JNZ 8~CK UP CKl 4gl ;
01CD 263~6C02 49~ C~P CH,ES:tSI+']
01D1 7528 493 JNZ 8~5~'_UP_EXIT
OID3 263~4C03 494 CMP CL,ES:tS1~3~
OID7 7521 495 JN~ t~C~ UP_NONE
4~6 :
01D9 8BDE 497 B~CK_UP_~ES: MOY 8X,SI
01t~8 81F30002 498 XqR eX,ES e~CK UP_l 01DF 81F30004 499 XOR ex~ E8_B~CK_IJP_2 01E3 891EFClf 500 MOV rT IMER-couNTER~Bx 501 ~
01E7 B80002 S02 MO~ ~X,S12 OlE~ BB0000 S03 MOV BX,PFOGR~MVERSION
01ED 2~8hOC S04 8~CK lJP CK2: MOV CL,ES: tSI~
OlF0 880F SOS MOV tBX~,CL

01F3 46 S07 INC Sl 01F4 48 508 DEC ~X
OlF5 75F6 S09 IN7 B~CK_UP_CK2 01F7 E90100 510 .IMp B~Ci. UP E'slT
51~ :
01F~ 90 S12 B~CK_UF_NONE: NqP
~13 , '- - 1 338043 HE'JILETT-Ff~CKhRD: l3081j fl55~mbl~-~
SOURCE LINE
01FB E81DO~ 514 BBCK IJF EXIT C~LL INIT TIM_T8L
OIFE E83DOS 51S C~LL INIT JU~P_TeL ;
S16 ;
0201 BEOOOO S 17 ~OY S I, PROGR~YERSION
0204 C6O458 S18 ~OV 8YTE PTR ~SI~JSEIS~U
02Q7 C6440112 S19 MOV BYTE FTR CSI~1~.BEIS~;U_~
020B C6440201 S20 ~OV BYTE PTR CSI~ 3,5EIS~KU_QG
020F C6~40302 S21 MOV 8YTE PTR tslt3~sEls~Ku - W
S22 :
523 ;~ 2 0213 B840~0 5.4 ~OV ~ . 0~040H
0216 B~C~FF ~2S MOB DX-QFFChH
0219 EF S26 OUT DX.~X
527 ; I~ aL.~CHC
S28 ; ~ND ~L,01011111 B
021~ 8O7F S29 ~OV ~L,O1111111B
021C B83CO7 530 ~0 BX,EXTRN_ST~T
021F 88q7 531 MOV B~TE PTR C8X~,~L
532;----UN11~5K---INTR i 0221 e84COO . S33 ~OV ~X.O1On11O08 ;NQ~I UNMRSK INTI~ . I-IT1 . I-IT3 TIMER~
0224 B~28FF S34 MOV QX. 0FF28H
0227 EF 53S OUT DX.~X

S37 : R~. E~l~8L~
0228 BeO3D9 S38 MOV 8X,11011001000000118 022B B~O400 S39 ~OY DX, ~CHC
022E E81200 540 C~LL SETCOM
- S41 ;~ IN INITITI~LI7E TI~ER.
0231 B80008 - s42 -MOV ~X, n 08 0 OH
0234 B~62FF S43 ~OV DX, OFF62H
0237 EF S44 OUT GX . ~X
0238 B8OICO S45 ~OV ~X,I10nOOOOOOOOOOO1B
023B B~66FF S46 MOV DX~ OFF66H
023E EF S47 OUT DX, ~X
548 ~

SSO:
024n EgBDOO SS1 J~P H~JIMERU~O

S60 SETCOM Eo~ Bc74 0243 8~C3 S61 SETCO~: MOV ~LJBL
0245 EE S62 0UT DX, ~L
024~ 8~C7 S63 ~OV ~L.BH
0248 EE S64 OUT DX . ~L
OC4g C3 S6S RET

S67 PTR 1~
024~ BOO1 S68 HDLI:_TX ST~RT MOV ~L.OnOOOnn1B
024C E604 S68 OUT ~CHC . ~L
O24E BOOF S7O MOV ~L.OOOO~1l lB
., . . , . . _ _ `.

HEI.ILETT-P~7cl:~Rr~ 6 f~ .L mt. 1 ~r SqUROE LI NE
02SO E6n4 57i OUT aCHC.aL
S,2 ~---------------FE'JERSE CH. SELECT----02S 800S 573 1~10~J bL.OI)Odl)1 01B
0 S4 E604 574 OUT bCHC.bL
02~6 ~01607 5;S Mo~r ~L~BYTE FTR CRE.ER- CH~NEL~
02~8 R2~E07 5.6 110Y E,TE PTR tTEMP_F_CH~!hL
02SC 8aEo 5-7 ~10~J aH. f~.L
02SE 2401 s.s ~ND bL~ooooouolE
02Go F8 S.9 CLC
0261 DOCO 580 ROL ~L
0263 OC60 5%1 OR ~L.0110ql100E
0265 E604 ~B2 OUT ~CHC.hL
0267 BOOS 583 MO~J aL.I)q000101 B
0268 E606 5S4 OIJT ECHC~aL
026B a~C4 58S MO~ aL.~H
026D 2402 5%6 ~rJ aL~000l~l3n~08 0~6F OCEO 587 OR aL~111oool3l3E
02?1 E606 S88 OUT BCHC,bL
588 ~ -------PTF: 5b-------------------1520; MOY aL, 000001 OlB
~81 : OIJT acHc~L
~ 2: 110~ RL,ol1OqOl~OB
S93 ~ OUT ~CHC.. ~L
0273 Ess3oo ~Q4 caLL WP~IT ~ RTS HoLrl 1 2m UNTIL T- E,l~
0276 E8S000 5QS saLL walT
0278 E84DOO ~Q6 CaLL l~JalT
OZ7C E84R00 5Q~ caLL WalT

0282 E84400 58B caLL IJAIT
028S E84100 600 CbLL 4aIT
0288 E83E00 B01 CbEL warT
60~; --PTR sb- ------028B 800S 603 Mol,~ aL 000001 01B
028D E604 604 OUT aCHC,aL
028F P03E07 60S MOV aL,E'tTE PTR tTEMP_R CH~
0292 2401 606 ~ND aL~ooooooo1B
02Q4 F8 6.07 CLC
02?5 DOCO 608 ROL aL
0~7 OC6? 608 OR aL 01101001 B
q-- ?8 E604 610 OUT aCHC,~L

02aB B080 613 t10~ bL,10qOOuOOE
0,8D E604 614 OUT QCHC.~L
61~; ---INlTIaL SET UP OF DM~,CH.1TX TR~NS
616 ~---- ;OURCE POINTEF SET---------------------------------617 ;----------------DESTIN~TION PO~NTER SET--------__--------------02?F SBC6 618 t10Y bX~ SOURCE ~[~F.
0~11 40 618 INC bX
o~a2 BaDoFF 620 Mov DX.OFF~OH
02~ EF 621 OUT t~:~: . ax 02n6 B002 622 MO~ bL. 02H
02a8 BfD2FF 623 MOV t?;.OFF~-H
s2~B EE 624 OUT ~X.i~L
02~C 8ac1 62S MOV ~L~CL TR~NSFER Cl31JllT02~E B400 626 MOV ~H.O
0280 EaGBFF 627 MOV ~ OFFC?EH
-_ . . . . .

~ .

HEWLETT-P~CK~RD: 3036 ~s~m~I=r SOUPCE LINE ~ -02B3 EF 628 DUT GX.~X
629 ;---------------TP~NSFER Cq'JNT-----------------------------------630 :------------------CONT~OL WORC`.~ET---------------------02B4 B~C~aFF 631 Mo~.,r G.'.13FFG~H
0287 B88616 632 MOV ~X,01686H
02B~ Ef 633 OUT C~X,~X :GM~ G13 1 634 :-------------IJ~IT ROUTINE------------------------------028B E80800 63S C~LL W~IT
636 ; FIRST BYTE OUTFIJT
d2BE 8BtrE 637 MOV BX.SI :SO~JRCE ~CI~.
02C13 8~0~ ~38 ~O~ ~L~C6X~
02C2 E600 639 OUT ~CHG.~L

02C4 BOC0 641 MOV ~L.11000000B
02C6 E604 , 642 OUT ~CHC ! ~L

- 644 ;5=============ld~IT-===~=====~=
02C9 BB0000 645 WPIT: MOV BX,.I) ..
02CC 43 646 IJ~ITl: INC BX
02CG 81FBFF00 , 647 CMP BX,OFFH
02G1 7SF9 648 JNE W~ITl 0~D3 C3 649 RET

~S4 ~6~

6~7 66~

671 ; INTR 3------ ----------------------672 ORG 06~00H
673 ; eeeee cL I
674 :
6~ ; -________-_______________________ 676 ; ~#~ OBF Int,~rr~pt Op~r-ti~n ~**********~****~*~**~
677 ; - -- -___________________________________ 6~8 :
6300 9k 679 OBF_INTERRUPT: PUSHF :PIJ~H ~LL

6302 E480 681 IN QL,GROP_G~T~_Pf3RT
682 ;
6304 8B36100~ 683 MO~ SI,tCTRL_7_SOUNT~
6308 ~804 684 ~OV CSI~.~L ~ Cl~t.~ ~t~

.

~;

HEWLETT-PACKARD 8086 A umbler SOURCE LD~E
630A 46 685 INC Sl 630B 89361007 686 MOV [CTRL_2_COUNIl,SI ; Fointer InrJanen~
- 687;
630F BE4007 688 MOV Sl.OBF_BF_N
6312 FE064007 689 INC BYTE FTR [OBF_BF_N~ ; D~ Lenlsth Inae~nent6316 8A0E4007 690 MOV CL,[OBF_BF NJ
631A 8A6401 691 MOV AH,[SI+Il ; AH - Comm nd Byte 692;
631D 80F901 693 CMR CL,I
6320 750F 694 JNZ RESFONSE_2 6322 B001 695 MOVAL,I ; I ByteRpon e 6324 80FC00 696 CMP ATL0 ; [ 00 1 1 07 ]

632E E98200 700 OBF RET_IIMP OBF RET
70i;
6331 80F902 702 RESPONSE 2 CMP CL,2 6334 72F8 703 IC OBF RET_I
704;
6336 B002 705 MOV AL,2 ; 2 Byte Te pon e 633880FCU 706 CMFAI$34H ; [011102]~03][05][06][08]
633B 7405 707 IZ RESPONSE VAL ; V~libleL~ngth 633D 80FC04 708 CMP AH,4 ; [ 04 ] [ 84 ]
6340 7510 709 INZ RESPONSE_CHK
710;
6342 80F904 711 RESPONSE_VAI, CMP CL,4 ; [ 04 ] [ 08 ] > 4 6347 8A4403 713 MOV AL,[SI+3] ; Byte Length Lo~
634A 0403 714 ADD Al ,3 634C 3C03 715 CMF ~L,3 634E 7502 716 lNZ RESPONSE CHK
6350 FEC0 717 INC Al, ; [ 04 ] [ U ] En~r Re pon e 718;
6352 3AC8 719 RESrONSE CHK CMP CL,AL

721;
6356 8B5401 722 OBF_PACKET MOV DX[sl+ll 6359 80CA40 723 OR DL,40H ; 8742 - - - > 80186 Then OR 40H
635C 8BIEFEIF 724 MOV BXpNDEX_HlSTORy 6360 8917 725 MOV IBXlDX
6362 8B5403 726 MOV DX[Slff]
6365 895702 727 MOV IBX+21DX
6368 8B5405 728 MOV DX[Slff]
636B 895704 729 MOV [BX+4],DX
636E 8B16FCIF 730 MOV DX[l~MER COUNT~]
6372 895706 73 ' MOV [BX+61DX
a75 83C308 732 ADDBX8 6378 81FB0030 733 CMP BXPAGE_MEM
637C 7203 734 IC OBF_MEMO
637E BB0020 735 MOV BXHl!iTORY BUFFER
6381 891EFEIF 736 OBF_MEMO MOV [INDEX_HISTORY],BX
737;
6385 8A260E07 738 MOV AH,[CTRL 2]
6389 80FC28 739 CMF AH,40 638C 73 IC 740 INC OBF_NEW
741;

, _ ~ ;r HEWLETT-F~CK~RD: B086 ns~nbl~r - SOURCE LINE
638E 881E0~07 742 t10V BX,tlNDEX RX
6392 8807 7~3 tlOV C8X~ J ~L
~394 FEC3 744 INC 8L
6396 8a6401 7~S RESPOHSE_TRNB: MOV QH,tS1~1 6399 8827 746 t10V C8X~,~H

639E FEC8 749 DEC ~L
63~0 7SF~ 7~0 JNZ RESFOt/SE TRNS
7~1 ;
63~2 FE060E07 7~2 INC B~TE PTR CCTRL_2 63Q6 891EOP07 753 t10V CINDEX RX_~.B:-:
754 ;
63~ ~24007 755 08F HEW: t10V tO8F_BF_N~.~L : tO6F 8F_t] = u 63qD 88~107 756 t~OV ~X,OEF 8F Ct1D
6380 ~31007 7S7 MOV tCTRL_~_COUNT~ J ~X ; tCTRL 2_COIJtlT~ = OBF 6F_Ct 7~8 :
63B3 B80F00 759 08F_RET: t10V ~X! 15 6386 B~22FF 760 t10V DX,0FF22H
6389 EF 761 OUT DX,~X
63B~ 61 762 D8 61H ,POP ~LL

-~3BC F8 764 STI
63BD CF ,65 IRET
766 : INTR 1----------- -----768 ;-Ql~e~l' CLI
769 ;
770 : - --_________ ______ __ 771 : ~ **~ * Drop Proc~ssor IEF Op~rati~n **~##~*~*~**~**~
772 ; ----- -- ___________ 773 ;
6200 9C 774 18F_INTERRUPT: PUSHF

6202 8B1E0407 776 t10V 8X,tlNDEX TX l~
6206 8~0E0607 777 nov CL, tCTRL 1]
620~ 8~260807 778 tlOV ~H,tCTRL_1_CoUNT]
620E 80FC00 779- Ct1P ~H~0 6211 7S6C 780 JNZ I8F_2tlD
781 :
6213 80F900 782 IBF_1ST: cnP CL,0 6216 750~ 783 JNZ I8F_EXlST
784 ; MnSK IBF, INTR.
6218 B81~00 785 I8F_Et1PT~: t10V ~X.1~H
6218 8~3~FF 786 tOV DX,I)FF3~H
621E EF 787 OUT tlX.~X

7~9 ;
6222 8~27 790 I8F_EXIST: MOV ~H,tBX3 6226 8~07 792 rov ~L, tBX~
6228 E682 793 OUT DROP CMD PORT,~L
79~ ; _ 622a FEC3 795 INC 8L
622C 891E0407 7~6 MOV tINDEX TX_1~,8X
62.30 FECC 797 DEC ~H
-~232 88260807 798 ~OV CCTRL_1 COUNT~,~H

1 338~43 HEI.dLETT-P~ÇK~RG: 8036 ~ cr SOURCE L I NE
6236 7506 799 ONZ IBF_P~C~ET

627P 880E060? 901 rlov tCTP~L_l~,CL
802 :
6Z3E 8836FElF 803 IBF_P8CKET: MOV SI, C INDEX_HISTORY3 6Z42 8ao4 804 MOv ~SI3!~L
6244 9~07 805 rto~ aL~B~
6246 884401 306 rlov CSI~ L

6248 8~07 808 MO~ ~L,~BX~
6Z4D 884402 8 09 MO~ tS I ~2 3, ~L
6z50 FEC3 310 INC BL
6252 8~07 81 1 rlov ~L,t8X~
6254 884403 812 rto~ tSI~ L

625g 8~07 al4 rtov ~L,t8X~
6258 884404 sls rtov tSI~4~,~L
62sE FEC3 816 INC BL
6260 8~07 817 rtov ~L,C8X~
6262 884405 . 818 rlov ~SI~53,~L
6265 sB16Fc1F 819 MOV DX,[ T I MER cOuNTER~
6269 895406 820 ~O~ tSI~, G~;
626C 83C608 ,821 R~Cl sI~s 626F 81FE0030 822 CMP sI~p~sE MEM
6z73 7203 823 JC IBF_MEMO
6z7~ sEoo2o a24 MOV SI, HISTORY BuFFER
6278 8936FElF 82S I8F_MEMOI MOV CINDEX_HISTOP(~,SI
627C E91800 826 , JMP IBF_RET
- 827 ;
627F 8~07 328 IBF_2ND: MO~ ~L, CBX~
6Z81 E680 829 OUT DROP_D~T~ PORT,~L
62C3 FEt3 830 IBF_SET: INC BL
6285 a91Eo4o7 331 nov CINDE:~_TX t3,ex 6289 FECC 332 DEC ~tH
628B 88260807 3~3 rto~ CCTR~ I sou~T~H
623F ,S06 834 0NZ IBF RET
6291 FEC9 . 335 DEC CL
6293 ~80E060f- 336 rtov tCTRL t]!sL
;
a38 :
339 ; IN_SERVICE L~TCH RECET
6297 BaoDoo 840 IBF_RET: rlo~ ~,X,13 62~a 8~22FF 841 MO~ D,,-.IFF22H
629D EF a42 OUT D~ X
629E 61 843 D8 6tH

62ao F8 a45 ~ STI
62~1 CF 846 IPET
847 ;

a4s :---------------INTR o----------------------------------850 J ~ t~e~rnal et3~u~ Intr.~~~~~~~~~~~~~~~~~~~~~
8Sl ORG 0640flH
a52 :Qeeeee CL I

64al 60 ss4 DB 61lH
64lt2 E404 sss IH ~L,~CHC

HEWLETT-Fa~ RC: 808f; ~s~bl~r - ;OUPCE LI~E
a56 ,- ^^-^^^ ^^~ A ~ NEW YEF3ION ^ ^^~
6404 8RC8 357 MOV CL~L
640G BO10 ~ - M~ ~L,~/~o1oq 6408 E604 859 OUT ~CHC:.~L
640~ E4n4 860 1~ ~L ~CHC
64~c s~Es 8Gl ~ov CH,~L
640E ~03C07 ~62 MOV ~L,RYTE PTF. tE`TFN_3T~T~
6411 savo ~6J MOV vL~aL
6413 sRcs 8~4 MOV ~L, CH

6417 DOCO 366 ROL ~L
6419 DOCO 367 ROL ~L
641a 7207 808 IS LOY
641D 8ac1 369 MOV ~L,CL
641F 24DF 870 ~ND ~L,II Q1111 1B
6421 E~0700 371 JMP LOZ
372 ~
6424 8RC1 373 LO~; MOV ~L,CL
6426 OC20 374 OR RL,01~10rl01~0R
6423 E9Oooo . a~s JMP LOZ
642B a23co7 370 LO.: MOV E~TE RTR ~EXTFN 3T~T~,~L
642E 8RC2 ~7Z MOV ~L, DL
6430 2410 a78 a~D aL~ooolooooe 6432 8REO a79 MOV ~H, ~L
643,4 BaCl 880 MOY ~L,CL
6436 Z410 aal ~ND ~L,Q0010000R
6438 3~E0 882 c MP ~H,~L
643R 753~ 883 JNZ EXIT
643C 8~C2 384 MOV ~L,DL
-643E 2420 a8~ a~v hL,001 oooooe 6~40 8~EO a86 MOV ~H,~L
6442 8QC5 387 MOV ~L, CH
6444 2420 a38 ~ND aL~ooloooo QE
6446 3aEo 3ag C.~ aH,aL
6448 8RC2 890 . Mov ~L, DL
644a 24ao agl a~D aL~looaonoQe 644C ~aEl %92 MOV ~H CL
644E 80E480 393 ~ND ~H,11:1000l~00E
64S1 32EO ag4 XOR ~H,~L

64SS 8RC1 - 896 TX_UNDRN: MOV ~L,CL
64S7 2444 a~7 ~ND ~L,O10001 OOB
6459 3C40 398 C~P ~L,QlOqqQO OE
64SB 7519 899 ONE EXIT :~OT TY.U~lbEFPUM
64sD 8028 ~00 MO~ ~L,Oq101 ,~ooe 645F E604 ~01 OUT ~SHC,RL
6461 Bs1 OOE ~02 ~ x,3600 6464 Ba5~FF ~03 MOY VX,OFF5~H
6467 EF 904 OUT bX,~X
6468 B801EO 80S MOY ~x,1110qOO000000001B
646B Ba5EFF 906 MOV DX,OFF5EH
646E EF 807 OUT DX,~X
646F B80300 ~08 MOY ~X,00118 6472 Ba32FF ~09 MOV DX,OFF3ZH
647S EF g10 OUT DX,~X
912 ;XIT: I`IOY ~L, 0001 OOOOB
.

HE4LETT-PQC~pRD: 8086 Q ~bI~r S~URCE LINE
913 ; OUT QCHC AL
6476 B038 914 EXIT~ MOV QL.00111000B
6478 E604 91S OUT QCWC.QL

6480 EF ?18 OUT G~ X
?19 ;
6481 880000 9~0 MOV QX 0 6484 a21807 921 MOV tTX_8US~_FLQC3 QL
6487 Q31407 ~72 MO~ tECHO_Bac~_FLQc~ ~X

648C F8 ~2S STI

g27 9.8 ~29 ~32 ~33 ~35 g36 ~38 ~40 ~41 ~4^
943 !---------------INTR 1)--------------------- --944 OR~ 0650-)H
?45 ;QQQQQQI3 CLI
.46 ; ----- --------_______ _____________ 947 :---------------FIRST RX. IIJT SHORI---------------------------------------6501 60 ~49 DB 60H
6502 881Et~07 ~S0 MOY Bi.ldOR~ PTF ~PQGE SW3 9!~5 1 ;
65d6 E400 ?S~ HON~ IN QL QCHD ~IST ~QT~ INPUT
6508 8807 ?53 MOV tEX3 ! QL
65dQ 43 ?S4 INC ell 650B 88C3 ~S5 MOV QX BX
6SOG BQC4FF ?S6 MOV D-.. 0FFC4H
6S10 EF 9S7 OUT D~ X
.6511 B002 358 ~OV QL.0 H
6S13 8UC6FF 95? ~OV D~.dFFCæH
6S16 EF 960 OUT GX.~X
6517 eRFF00 ~61 MOV QX.2 5 6Slq BQC8FF 962 MOV D~.0FFBSH
6SlD EF 963 OUT .D~QX
6S1E 8846~2 ?64 MOV Q:.0Q246H :~M~ STQRT
6S21 BQCQFF 965 MOV ~X.0FFCQH
6524 EF 966 OUT D.~.Q~
- ?67 ;------------IN 8ERV. LQTCH FESET--------6S2S B03R 968 MOY ~L.00111000E
6S27 E604 969 OUT ~I:HC ~L

~ .

` ~~ 255 1 338043 HEWLETT-PaC~:~FP: 8086 ~s~Pmbler ~ SOUPCE L3~E
6529 Bæocoo g70 no~ ax.~
652C B~22fF ~71 rov DX~0fF-2H
652F EF ~72 OUT ~X.~X
6530 61 ~73 DB 61H
6S31 9D ~74 POPF
6S3c FB ~,5 8TI
6533 CF ~76 IRET
~77 ~78 ~79 ~0 ~82 ;~~~~~~~~~~~~~~~Sp~1al Rx. intr.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~83 ORG 06600H
~84 :el?99l?9 CLI
~85 ;
,86 ;
~87 ; *t*****~#*~ HDLC R:. Int~rr~p~, Op~r~ti~n ******************~**
~88 : -----------__--__________________________ 6600 ?C a~o RX I~TERRUPT: PUSHF
6601 60 ~1 DB 60H
6602 E86400 ~82 RX FO'~': C~LL RX RECEIYE
6605 7256 ~3 JC RX_CRC ERR : CRI Err~r 6607 83060~0n01 ~4 bDD 40RD PTR tRX CRC OK ~0~2~,1 660C 83160800Q0 g~5 bDC UORD PTR tFX' CRC OK ~O~.0 6611 8B361207 ~6 ~OV ~I~CP~CE_SU~
~7 :
6615 881C 9q8 MOV 8X,tSiJ ; Bi: = R~cPi~e ~ddre-3 6617 381E0014 ~ -cnP BX~tECU hDDREBS~
661B 7419 1000 JZ ~Y_bDRS
661D 81FBFFFF 1901 cnP BXrOFFFFH
6621 7413 1002 JZ ~Y_bDRS : Cl~b~ idr~ss 6623 83FB00 1003 onP BX,0 6626 7SlE 1004 J~Z RX_QET
1005 : 8I --- ECU H adctr~
6628 àl4014 1006 bL0Ha CHE'CK:n4v bX,CEI`U bt`DRES~ t L
662B 234403 1007 à~D ~X,tSI~3~ ~ ~c T.~. Length 662E 3B4405 1008 cnP ax~ tSI~J ; l3 t1as~ H a~trt,~
6631 7513 100g J~Z RX_RET ; 14 L
1010 ; +SFPf. H ~d.tre3-1 01 1 ; ~ L
1012 , ; 17Re.~l T.~ Lenqth 6633 83C60S 1014 nY ~LOHt4:bt~t~ SI.. S ; ~l~h3 addr~5s 101S ~
6636 89361407 1016 nY_~t~R;: nov tECHO_BaCk FLaGJ,SI : ECHO E;J--k E:ut~~`~r a~ r--s 1017 :
663a 81C60001 1018 bDD ;I.113l)H
663E 81E60033 101g ~tl Sl,3300H
664~ 8~361207 1020 hOV I~OPD PTR tP~CE Sl~!~.iI
1021 , 6646 B038 1022 RX RET: hOY ~L,0l)111 nooB
'6648 E604 1n23 OUT ~CHC.~L
10.4 ; ---_-____________ 664a t~80C00 10~5 ~10t.~ c 6b4t~ 8fic2FF 1 026 110V G '. 0FF2-c`H

.

~' 256 1 338043 HEI.~Lcrr-,a~ PC~ Bn36 i~ ~mt1~r r~CtUFrE L ~ ~E
c~ ) EF I /3~7 QIJT C ~ X
66~1 BOOI i Oc8 rlo~v i' 00013l3l1dlF6653 E604 1 Oc9 OIJT QCHC . f~L
6ljS5 BOOF I b30 r10~v~ i~L! 01 ol)l 1 1 IE
665, E504 tq31 OUT ~- HC.i~L
665' 61 1 032 rE 6 I H
665a ~tD 1 033 POFF
1 034 : -- ---- --_ __ __ __ _ _ _ _ _ __ _ __ _ _ _ 665H Ft3 1 03 5 BTI
6C.5C CF I 036 IPET
1 l3 37 C,C,riG 5330-$l)60 3~1l 1 133~ R: ~:~. E~F: ftGt~ 1,1-3FC F TF tF - ~-Rl _ EFPOF- ` 3 . I
~i6~iC B316 04 0000 1 0,~ ftGC l:lOFt FTr r~ . Fl _ECF Q F i u c,c,~, EBCD I 040 .JrlP F~ F.ET
1 041;
"c,~ ~ ~J O 1 04 2 F s F El: E I ~-~E: I~/OF
5 ;C ft B~4440 I q43 ~ t~ ,t~ H : C ~1f3 ;TI~F
6 .6f! eft-_i~FF I ~44 tlO.' B::. OFF~ H
c",, l! EF ~345 OIJT 1~ fi~
c,, 1 B O O I I ,34c, t1~3~. hL . O lj l) 0 l3 l1 l3 1 B
S67~ E6q4 1 OJ~ UIJT ~1 Hl: . ~L
6C, 5 E404 "34~ Ir~ ~jL ~ HC .T,j r~ FUT
6C,7~ C~OCO I 04. FOL f'' s6 ~ DOCO I 050 F1l~L HL
66.8 B030 1051 tll~ ftL 01311 u,ilJ,iF, :EFFOF FE-.eT C .r 6~C` E604 ' 05c QIJT hl HI .
66, F B040' 053 ~1Q~ hL . ,!1 ,)l3,3,3l)0E : RESEk dFI: EEl-i E~
6f.31 Ef,1)41 d54 OIJT ~CHI` ~iL
~83 BO-d 1055 rlo~v~ hL.dl310131il)08 6~;85 E6041 056 IJIJT hl Hl` . f~.
6~i8, C3 1 0 t, RET
3 ~S :~ : - -- ---- -- ------ -- _ _ _ _ _ _ _ _ _ _ I ~)5, - ---- - ---H13~ ;PEC IF IC EB I ~ ~~~~~ ~~ ~~~~~~~~ ~~~
6; B 3 6'30'3801 Q~O EB I MO~. ft~;! BO OIlH
66aB B~c2FFI 0~1 t10 ~ t! . OFF H
6 :-~E EF I Ofi2 CUT B: ~:-:
6~.-.3F C 3 1 0~3 i:ET
1 1) ~ ~ -- -- _ -- _ -- _ _ --. _ _ _ _ _ _ _ _ _ . . _ _ _ _ _ _ _ 5 :------------T:l t IBft81_E_~131J, INE
1 047 ;-----rlMFk I I~ICF-----1 0~.7 OFI, Ori, ;3 OH
1 0~3 ; 441it4 5L I
h-3lj jtl I 0~ RUSHF
6- O~ 60 1 070 t~B 61-lH
B . bc B;91 OOE1 0~1 ~O'. ~: 6 ~30 ~~05 6f 5ftFFI 072 MOv C: . OFFritH
~- 0;3 EF 1073 OiJT t~::.fi, 6-0~ eB0160 1074 ~10r ~ ol1oool)l)lJnnl3l!llolB
~" )- Pa5EFF1 b75 r10v C-::. UFF5EH
~,OF EF 10,6 l,3UT C~::.fi::
6, 1 0 BôOBOO1 1)77 MOV f . 1 01 IB
~, 1.3 8a3cFFI 078 rlO~ C::. OFF3cH
~, 16 EF 1079 OUT C} . f;'.'l 1080 S -------PTR oa------------------6, 1, B9c28 1081 110V ilL~ 001 01 ')OOB
' E6 04 1 082 OUT qCHC . FIL
1 0~3 J -------- --------------------PTP o~a---- ----------- -----`-- 1338043 HE~LETT-PaCKaRD: 8 086 aes~mbl~r 6718 800S 1084 ~OV bL,OOOOOlOlB
671D E604 108S OUT aCHC.aL
671F bO3E07 1086 - ~OV aL~syTE PTR tTE~P R CH~
6722 2401 1087 R~D aL,ooooooo1B
6724 f8 l 088 CLC
672S DOCO 1089 ROL aL
6727 OCEO l 090 OR bL,lll OOOOOB
6729 E604 1091 OUT ~CHC, aL
t092 ~ RTS OFF
1093 ------- rTR ol R
67ZB B001 1094 ~oV aL,ooooooo~B
672D E604 109S OUT aCHC, aL
67ZF 802D 1096 ~OV ~L,00101101B
6731 E604 1097 OUT ~CHC,~L
,. 1098 rTR on --6733 B080 1099 ~OV ~L,l OOOOOOOB
673S E604 1100 OUT aCHC,aL
1101 ---------------PTR cn -------1102 ; ~OV RL,OOOlOOOOB ???????
1103 ; OUT acHc~RL
1104 ;
6737 Ba22FF 110S ~OV DX,OFF22H
673b B80800 1106 MOV bX, 08 673D EF ~107 OUT DX, f~X
673E 880000 1108 ~OV ax,o , T~ ~nd f la~
6741 b21807 1109 ~oV CTX BIJSY FLaG~,~L
6744 A31407 1110 ~oV ~ECHo_8aCK_FL~G~.aX
6747 61 1111 Da 61H

~749 FB 1113 STI
6~4b CF 1114 IRET
1115 __________ _ 1116 ; SET UP UCS----- ------------------7COO B83FF8 1118 YOV ~XJ OF83FH
7C03 8R~OFF 1119 ~ov DX. OFFaOH
7C06 EF 1120 OUT DX.ax 7C07 E~dOOOOOF8 1121 D8 OERH,o,O,O,OF8H ;JU~P TO OF~ooO~

,FFO EbOOOOCOFF 1124 DB OEbH,OOOH,OOH,OI:OH,OFFH :JUI1P TO OFFC130H

112~

1i29 1130 , 1131 , - --- 1132 ;*~**#~* *******#**~**********~****************~**~:
1133 ;~ * H~ ***#~##~**********************~*#~****~*~
1134 ~ ***~#***~**#~***********#*****#******~**
1135 ; _- _______________________________ 1136 ;

1138 ;
0300 go 1139 HaJI~ERuyo: NOP
0301 E80000 1140 Ca~L POWER_DET_C~D

- 1 3380~3 -` ~_ HE~ LETT-P~C~RG ao~ d5~ cr SQURCE LIrE
0304 BE200~ 1141 H~JIMEI: MOV SI,FRQ~_QBF BF
U307 E90000 1142 C~LL LQ~D FFQM DFQP
030~ 72F8 t143 JC H~JIMEl 030C BE200a 1144 MOY SI,FROM_OBF_eF
030F 8~4401 tl45 MOV ~L,CSI~t~
03~2 3C01 ~14~ cnP ~L,~
03t4 75EE 1147 JNZ H~JIME1 ~ IF Rcspons~ :~ Power Det. Then Wait '14a ;
0316 E80000 1149 C~LL POWER_DET_CMD
0319 BE20 oa 1150 HqNBbNl MOY SI,FROM OBF_BF
031C E80000 1151 C~LL LO~P_FROM_DROP
031F 72F~ llS2 JC HONB~NI
0321 BE2008 1153 MOV SI,FFOM_OBF_BF
0324 8a4401 1154 MOY ~L,tSI~l~
0327 3COl llS5 C~P ~L,l 0329 7SEE llS6 JNB HON8bNl IF R~cpons6 ~ Power DCt. Then Wai~
1157 :
032B 8~7402 1158 MOY DH,~SI~-~ DH = Power Detec~ Data 032E B210 1159 ~OY DL,10H DL = 1st ID_BYTE --- lOH
0330 DOCE . 1160 DROP_INIT LP: RqR DH
0332 7363 1161 JNC DRP NE.YT IF C~-0 Th~n Po(!er P~ n 11~2 :
0334 S2 1163 PEY INIT_LP: PUSH DX
033S 88162C07 1164 MqY CID_BYTE~,DL
0339 E80000 1165 C~LL IP_DFOP_DEYIC:E
033C E80000 1166 C~LL SPU_ST~TUS_REQ
033F BE200a 1167 DEY_RE P_WT: MO~v~ SI.FFOM_qBF_BF
0342 E80000 .1163 CbLL LQbD FF:OM DROP

0347 BE2008 1170 MOY SI,FROM OBF BF : SI --- Length ~ 7~ : 11 Conn~nd - ~ 1172 : l2 ID BYTE
" 73 : ~3 8yte Count 1174 : ~4 Data 034~ B004 117S MOY ~L,4 034C 3~4401 1176 CMP ~L,CSI~I~
034F 7SEE 1177 JNZ PEY ~ESP_WT : IF tSI~1~=4 Th~r, 04 Commar,d ~l~a;
0351 ~4402 1178 MOY ~L,tSI~-~
03S4 3bO62C07 11~0 CMP ~L,tIb_BfTE~
0358 75ES 1181 JNZ DEY_RESP_I.lT : IF CMD NEQ Statu5 Thcn W.,it oop ~a2 03S~ B000 1183 MOY ~L,0 03SC 3b440~ lla4 C~P ~L!tSIl~]
03SF 742D 118S JZ DEY NEXT YLF Error ~De~rcc Off) 1186 :
0361 8b4404 1187 ~O~v~ ~L,~SI~4 0364 24F8 1188 ~ND ~L,OF3H
0366 75D7 1189 JNZ DE~ RESF WT ; Sta~u~ Rc-~pon~L denai 0368 8~5405 1181 MOV DL,tSI~5~ DL = St3t,~Js ,~
036B E80000 11~2 CbLL CQNv_Sld_PIT_~L ; `I --- Cl.O~YSEL ~ Prop Nl~.
1193 ; ~L --- ~: Devic~ ,`
036E 80E280 11~4 ~NG DL,80H
0371 740E 11~5 J DEv_Bw_o ; IF ~7,=0 Then Cunvertc-r Sl-l=n 0373 8~262607 1186 DEY S~d 1: MOV ~H,tt`ROP NO~
0377 80E401 11~7 ~ND ~H,l 1 33~4~
259 -- _ HEwLETT-PaCKaRD 8086 asz}m~ler SOURCE LI~E
037a '509 t198 JNZ DEV CLR ; IF ODD Drop Then Corverter SW=0 EIse ~b~ormc 03 C 0804 1199 OR tsI~aL
037E E90400 t200 JMP DEV_CLR
038t 343F 1201 DE'_SLI_0 XOR HL 3FH
0383 2004 1202 aND tSI~HL
1203 ;
0385 E80000 1204 DEV_CLR CHLL SPU RELHY OFF

039e E80000 1206 caLL EVENT_LED OFF
120~ ;
038E 5~ 1208 DE'_NEXT POP DX
038F 80CZ08 1209 aDD DL 8 ; 00** ~DDD
0392 8oFa3o 1210 ChP DL 30H ; 0011 0DDD
0395 729D 1211 JC DEV_INIT_LP ; IF Dc~ice 6 Then Ne~t te~ice 1212 ;
0397 90E207 1213 DRP_NE'T ~ND DL ' 039~ FEC2 t214 INC DL ; Next Drop 039C 80FQ06 12t5 CMP DL ~ ; IF Drop>5 Then ~c~t Opcr3tion 039f 7305 1216 JNC POLLING SEQ
03~1 80CP10 1217 OR DL 10H Nc~t Dc~ice St3rt ~rom "2 03~4 EB8a 1218 0MP DROP INIT LP

~221 03~6 E90000 1223-POLLIN~ SEQ caLL DROP M~P SET ;-~2~ ;' 03~9 E80000 122S C~LL DfVICE M~P SET ;- DROP 0 03~C FE062407 1226 INC BYTE PTR tCONV_NO~ ;-03BO EB0000 1227 C~LL DEYICE M~P SET ;- DROP I
0383 FE062407 1228 INC BYTE PTR tCONV NO~ ;-D387 E80000 tZ29 C~LL DEYICE_M~P_SET ;- DROP 2 03B~ FE062407 1230 INC BYTE PTR tCONV_NO] ;-03BE E80000 1231 C~LL DEVICE_M~P_SET ;- DROP 3 03CI FE062~07 1232 INC BYTE PTR tCONi NO~ ;-03C5 E80000 1233 C~LL DEVICE Map SET ~ ;- DROP 4 03ca FE062407 1234 INC BYTE PTP~ tCONY NO~ ;-03CC E90000 1235 C~LL DE~ICE Map SET ;- DROP 5 ~240 ~24~
~242 ~2~3 12~4 12~6 ~248 ~
~249 J ------------_ -____________________ ~250 ~ l ~ ~*~-~**~i-~ ~ ~-~*~
1251 ;~ M~in Routin~ *~**~*~**:~*'~*#**~ *~:****:****':'**'*:**~
~252 ;~ ****~*****~**~
~253 J - ------_---- ___-____________________ 12~4 :

HEULETT-F~CK'~RD: 80~6 ~s~nbl~r 12S5 ~
03CF E82C01 1256 M~IN_LQQP: C~LL FoRWaRD_CMD_CK ; C-~ Fla~ ti~e 03D2 E91100 12S7 C~LL TIMER_QPER~T
03D5 7205 1258 JC KEY_~PPLIC~T
125g .1262 - 1263 :
03~7 E8CD04 1264 DRQP ~CCESS: C~LL DROP RESPONSE : RespQns~ no k3i haku 03Da 7305 1265 JNC ECU_~DRS_NE~ Shori NChi 1266 1~67 12~3 12~g 1279 :
03DC E80000 1271 KEY_~PPLIC~T: C~LL KEY_OPER~TION ; ---> Kc~ shori 03DF EBEE 12'2 JhP M~IN_LOOP

~275 12~6 1277 :
031 E82903 1278 ECU_~DR8_NEW: C~LL ECU_~DRS_REPD
03E4 EBE9 127g JMP MaIN_LOQP
t230 128~
~282 ~2~4 ~285 1~6 ~287 ~288 ~2~ :
12~0 : ~**~*~***~ ~u~r~utin~ *********~*~*******~*************~
~291 ;
03E6 E^FB00 12g2 TIMER_OPER~T: C~LL TIMER_CHK
03Fg 7202 1293 JC TIMER_YO
03EB F8 12g4 CLC
03EC C3 12g5 RET
~2~6 :
03ED FF0iFClF 12g7 TIMER_YQ: INC ~lORD PTR tTIMER_COUNTER~
~2~8 ;
2gg ~ 300 03F ! 8B16FClF 1 3 o 1 TIMER_TO82: MOV DX tTlMER_COUNTER~
03F5 80F~00 1302 CMP DL 0 03F8 7S~8 1303 JN2 TIMER_TYPE_2 03F~ 80E607 1304 ~ND DH 7 0400 73~0 1306 JNC TIMER_TYPE_2 1307 :
0402 BOOl 1308 MOV ~L 1 0404 8aCE 1309 MOV CL DH : DH ~ CQNV NQ
0406 D2C0 1310 ROL ~L CL ; ~L = CQNV_NQ_BIT
0408 84068007 1311 TEST ~L tNO~I EVENT~
_ _ .. . .. . . . . . . . . . ,, , _ . . , , _ , ` 261 l 338~43 HEWLETT-PRCK~RD 8 ns6 as~æ~bl er 50U~CE LINE
040C 74S4 1312 JZ TI~ER_TYPE_ 040E B700 1313 ~Ov 8H,0 0410 s~DE 1314 ~OV BL,DH
1315 ; ~ #~ PaY Chann~ 4 ~ ##
0412 8E3000 1316 ~OV sl~EvENT-cHaNNEL
0415 03F3 1317 aDD si,sx 0417 8R1C 1318 ~OV BL,CSI~ , BL 5 EvENT v i~J Ch-~nn l 0419 8E0006 1319 ~OV SI,ES_EYENT_TI~ER C~Jn~r Ip ~ P3-J
041 C 8aE6 1 320 ~OV RH,DH
041E BOOO 1321 ~OV aL,0 0422 03F0 1323 ~DD sl,ax 04 24 268R20 ~324 ~OV RH,E S:tSI~C3X~
04Z7 80FcFs 13 5 C~P RH,OF8H
042R 7336 1326 JNC TIMER_TYPE_2 042C 26800008 1327 aDD 8YTE PTR ES ~s I ~ t BX' ~ . 3 0430 26so3sFs 1328 c~P syTE PTR ES tsI~cBx~oFsH
0434 ~2ZC 1329 JC TI~ER_TYPE_2 1330 ;
0436 800E8007C4 1331 OR 8YTE PTR tNO~_EYENT~,0C0H
0438 80CE10 1332 OR DH,lOH
043E 88362807 1333 ~OV tIC_BtTE3,DH
0442 Esoooo 1334 CRLL CONV TO_DROP
0445 E80000 ~335 CRLL ID_C~ROP_DEVICE

0448 ao2Eo7 1337 ~Ov ~L,CCONV_NC_EIT~

044D 20068107 1339 RND BYTE PTR CEEFOR_EvENT~ ~L
__ 1340 J
0451 8E3000 1341 ~OV SI, EvENT_CHaNNEL
O~S4 03362407 1342 PDD SI, tCONV_NO~
04~8 8a~c -13~3 ~OV 8L,~S I
04SR 8700 1344 ~OV 8H,0 04SC E80000 134S CRLL 8INQEC_LED
04SF E80000 1346 CRLL RUN_CONvERTER

0462 881EFC1F 1348 TI~ER_TYPE_2 MOV 8~,CTI~ER COUNTER~
0466 81E3FFOF 1349 aND BX, Of FFH
1350 ~
046a 81FB0004 13S1 C~P 8X,ES_BRCK_UP_2 1q-S
046E 734C 1352 JNC TI~ER_TO8 0470 B1F80002 1353 C~P 8X,ES_BRCK_UP_1 , 51^
0474 7218 1354 JC ~OV_1 _ST
13~ ~
0476 268R47 1356 ~Ov_~_ND ~OV aL,ES CBX~ES_B~CK_UP~ 5x = 512 - 10 3 0479 2688870002 1357 ~OV ES c8xlEs-s~cK-up-1~RL
047E 753C 1358 JNZ TI~ER_TOB
0480 26C706000c 1359 ~ov ~ORD PTR ES CES sRcK UP_1 ~ . OR5R5H
048. 26C7060004 1360 ~Ov 40RD PTR Es CES_8al:K_UP_ ~ u 048E E9~800 1361 Jnp TI~ER_T08 13~2 ;
0491 83F804 1363 ~OV_1_5T: C~P BX,4 0494 7214 1364 JC ~OV 1 INIT
0496 8ao7 1365 ~ov RL, CBX~
n498 2688870002 1366 ~Ov ES C8X~ES_5RCK_UP 1~,RL
04~D 2630060202 1367 xOR ES CE5_ERCK_UP_1+2~,RL
04R2 260006 03 02 1368 ~DD ES CES_B~C~ JF_11 3~, RL

~, ~ ~ ~ 262 1 3380~3 ~ HEWLETT-P~CK~RD: 8086 a~5enbl~r SOURCE L I NE
04~7 E1200 1369 JMP TIMER_TO8 1370 ;
04aa 26C6870002 1371 MOV_l INIT: MOV BYTE PTR ES:tBX~ES_B~CK_UP_1~.0 0480 83FBo0 1372 CMP BX, O
0483 7507 1373 JNz TI MER_TOB
04BS 26C7060004 1374 MOV WORD PTR ES:~ES BaCK UP_2~,0~5~SH
1375 ;
04BC 81E33F00 1376 TIMER_TOB: aND BX,3FH ; Od** #***
04C0 881E2807 1377 ~OV tIC_BYTE~,BL
04C4 02DB 1378 aDD BL,BL
04C6 BE0003 1379 MOY St,TI~E_Ta8EE
04C9 BBqo 1380 MOV ax~csI~tB
04C8 3DFFFF 1381 C~P ax~oFFFFH
04CE 7412 1382 JZ TIPIER_SUEEP : Tim~r 43 T-Jk3~.!3n.3i 04no FF08 1383 DEC ~ORD PTR CSI~tBX~
04D2 750E 1384 JNZ TIMER_SLEEP ; ~--- M3d3-i5 1385 ;
04D4 8~00 1386 MOV C-,TIYER_OUT_CODE ; C--- Ji~3n d:cu-;-04D6 88qE8907 1387 MOV CKEY_D~T~,CL
o4Da E80000 . 1388 caLL IC_DROP_DEVICE
04DD E80000 1389 C~EE CONV_TO_DROP
13gO ;
0~0 F9 1391 TIMER ~CTIVE: STC
04El C3 ~392 RET
1393 :

042 F8 '396 TIMER SLEEP: CLC

1400 ; ~*~#~#***# Tim~r Count~r Ch~ck ~****~*****#**~***~*#****#*
1401 ;
1402 IS====----~ --SUBROUTINE FOR COUNT SEC=============
O~E4 ea66FF 1403 TIMER_I:HK: MO~ DX,OFF66H
04E7 ED 1404 IN ~X~DX
04E8 a,2000 14 05 TEST ax~oo OH

04EC 74dF 140~ JZ RETTIM2 04EE B80dO8 1408 MOV ~X,d800H
04Fl Ba62FF 14O9 ~OV DX~OFF62H
04F4 EF 1410 OUT DX~ax 04F5 B801C0 1411 MOV ax~11ooooooooooooo1B
04F8 Ba66FF 1412 MOV DX,0FF66H
04FB EF 1413 OUT DX~ax 04FD C3 1415 RETTIM2: RET

1~21 14~2 142~.
. . . . _ ` ~-HE~LETT-F~CKaRD: 8086 as5~mbler 50URCE LII~E

1~34 1439 ~
144~ -----_________________ ______________ 1441 ;*##****#*##** ~#*******#*~*******************~-**-144. :#~##****##~*~ HDLC Fqr~4rd Csmm~nd **#******~*#* #~*****~*-~***~
1443 ,#****#** * **###*****#*#*#***#~****~*~****~*~
1444 1 ------___---_ ___________ - __________ 1445 ;
04FE 8B36140? 1446 FORW~RD_CMD_CK: MOY Sl, tECHO B~CK FLaG~
0502 83FE00 1447 CMP Sl,0 0S05 7S03 1448 JN2 fORWhRD COME
0507 E90102 1449 JMP TX CCC_N RET
1450 - ; SI=D~t3 t-llJt~f~t- ~ddr~
050P C706140700 1451 FORw~RD I:OME: noY WORD PTR CECHO E~CK FL~G3~0 ; ~o --- ECU H ~ddr~E=
0510 8~403 1452 nov ~L,tS1~3~ L
0513 3C80 1453 CMP ~L,~0H J ~2 R~ D3t3 L:ngth 05t5 7333 1454 JNC FORW~RD CMDTBL - ; ~3 C.~mmlrd 0St7 3C20 1455 CMF aL~2oH
05t9 7303 1456 JNC CCC CMD_-20_7F
051B E98501 14S7 JMP CCC_DROP CMD ; oo - lF Comm~nd 1458 r 051E 740Q 1459 CCC CMD 20 7F: JZ FORCED KEY , ~0 - 7F C4mm3nd 0520 3C30 1460 ~ ~ C~P a~3oH
0522 7403 1461 JZ coLD-sTaRT
0S24 E9E401 1462 JMP TX_CCC_N_RET
1463 , 0527 E9D6F~ 1464 COLD_St~RT: JMP RUN : ~#*#*~ C41d St3rt *#***~
1465 .
052a 8a44n4 1466 FORCED KEt: MOV ~L,CS1I4~
052D a22807 1467 MOY tIC 8~TE~,aL
0530 8a6405 1468 ~o~ aHJcsl~s~
0533 88268907 1469 MOV tKEY D~T~ aH
OS37 E80000 1470 caLL IC DROP DÉYICE
053~ E80000 1471 caLL CONY_TO_DPOP
053D E80000 147~ caLL KEY OFER~TION

147S ;

0542 5B 1476 FORwaRD JUMP: POP BX
os43 03D8 1477 aDD BX,~X
oS4S 8~4403 1478 ~OV aLJts I ~33 1481 .
054a 2C80 1482 FoRwaRD_cMDT8L: SUB aL~soH

`~_ 264 1 338043 HE~LETT-pacKaRD: a 086 a~s~mbl er 50U~CE LI NE
054C 25FC00 1483 aND ~X,OFCH
OS4F E8FOFF1464 C~EL FORW~PD_JIJ~F
148S ~
05S. E97C0011~6 CCC I~D_J~PTBL: J~P SENG_FUNC_~OD ~ 80H ---05SS go 1487 NOP
0SS6 E99600 14~8J~P SEND RESPONSE ; ~4H ---055 go 14B9 NOP
05S~ E90000 1490J~P F~_CROUP_1 ; 6sH ---055D 9o 1491 NOP
ossE E90000 1492J~P pay-cRolJp-c 6CH ---OS61 9o 14g3 NOP
os82 E9~601 11g4J~P TX CCC_U RET ; 90H ---0S6S 9o 14qS NOP
oS66 E9~201 1496J~P TX_CCC_N RET ; 94H ---os6s go 1497 NOP
os6a E99E01 1498J~P TX CCC_N RET 98H ---056D 90 149q NOP
056E E99ao1 1S00J~P TX CCC N RET ; 9CH ---05?1 90 1501 hOp OS72 Esg601 lS02Jrp TX_CCC_N_RET ; ~OH --- tIno~

0576 E99201 1504J~tP TX CCC_N RET ; ~4H --- CIno~
0579 9ô lS 05 NOP
OS7~ E98E01 1506J~P TX_CCC_N RET , ~H --- C Ino~
OS7D 9o 1507 NOF
057E E98ao1 1508J~P TX_CCC_N_RET : aCH --- tIno~
OS81 9o 1Y09 NOP
0582 E98601 1.S10J~P TX_CCC_N_RET : BOH --- CIno~
0585 9o 1Sll NOF
0586 E98201 lS12J~P TX_CCC_N_RET : B4H --- tIno~

058a E97E01 1S14Jrtp TX CCC_N RET ~ BæH --- CIno~
os8D 90 1515 NOP
058E E97~01 1516J~P TX_CCC_N_PET BCH --- CIno~

0S92 E97601 1518J~P TX_CCC_N_RET r C0H --- CB~n~

oss6 E97201 1S20J~P TX_CCC_N_RET .: C4H --- tB~n~
pS99 ~0 1Sc1 ~oP
0S9~ E96E01 lS22J~P TX_CCC_N_RET : cæH --- CB~n~
059D 9o 1S23 NOP
059E E96ao1 1524J~P TX_CCC_N_RET : CCH --- tB~n~
05~1 9n lS2s NOP
05a2 E96601 1526J~P TX CCC N RET ~ DOH ---0sas 90 lS27 NOP
05a6 E96201 1 S28J~P TX_CCC_N_RET- : D4H ---05~9 90 1 S29 NOP
05aa E9SE01 1S30Jrp TX CCC N RET D8H ---05aD 90 1S31 NOP
os~E Es5ao1 1S32J~tP TX CCC_N RET ; DCH ---05B1 90 ~533 NOP
05B2 E9S60t 1534J~P TX CCC N_RET ; EOH ---05B6 E95201 1S36J~P TX CCC N_RET : E4H ---05B9 go 1S37 NOP
osBa E94E01 1538JrtP TX CCC N RET : E~H ---058D 9o 1S39 NOP

. .

. 1 338043 HEWLETT-P~CK~RG 3Q86 b~s~mbIer SQURCE LINE
058E E94a01 1540J~P TX_CCC_N_RET I ECH ---05C1 90 1541 r~OP
05C2 E95500 1542JMP ECHO B~CK_CMD ; FOH ---0SC6 E9E300 1544JMP FORCED_TUNE ; F4H ---05C~ E9S~00 1546JMP DISPL~Y_nEMOR~ ; F3H ---05CD 90 ~547 NOP
05CE E99300 1548JMP STORE_~EMORY FCH ---1549 ;
ISS0 ; ~***~**~ S~nd Function R~ponsc *~*~**~*~**-~*~**~***~**~*
1551 ;
OSD1 2403 IS52 SENC_FIJNC_~OG ~ND ~L,7~ ; SO - a~ Comm~nd05D3 7407 15S3JZ S_F_M_SET
05D5 3C01 1554CMP ~L,1 0SD7 74OD 15SSJZ S_F_M_CLR
OSD9 E92F01 1S56JMP TX_CCC_N_RET , a2 - 83 C~mm~r,d 1557 ;
OSDC 8~64Q4 1558 S_F_~_SET ~OV ~H,tSI~4~ 80 Comm~nd 05DF 88263008 1S59MOV tSEND_EH~8iLE~,~H
05E3 E92501 1560J~P TX_CCC_N_RET
1561 ;
OSE6 8400 1562 S_F_M CLR ~OV ~H,0 ; 31 Command 05E8 88263308 ~563~OY CSEND_INDEX~,~H
05EC E9tC01 lS64J~P TX_CCC_N_RET
lS65 :
05EF 8~263308 1566 SEND RE3P0NSE MOV ~H,tSEND_INDEX~ ; 34 - ~7 Comm3nd 05F3 80FC00 lS67CMP ~H,0 05F6 741F 1568JZ NO_SEND
0SF8 8~6403 lS69 YES SEND ~OV aH,tSI~3~
05F8 88263408 1570 M0Y tSEND_CMD_RESP~,~H
05FF 2403 1571 ~ND ~L,3 0601 ~21607 1572 ~O~ tREVERS_CH~NEL~,~L
0604 FE063308 ISZ3 INC BYTE PTR CSEND_INDEX~
0608 FE063308 IS74 INC BYTE PTR tSEND_INDEX~
060C 8E3109 1575 MOV SI,SEHD_~DDRESS
06OF ~10014 lS76 MOY ~X,tECU ~DDRESS~
0612 8904 1572 MOV CSI~,PX
0614 E9D600 15`78 0MP TX_CCC RUN
1 S~9 0617 E9F100 lS80 NO_SEND JMP TX_CCC_N RET
1581 ;
lS82 ~ *****~#* Echo ~ck Co~mand ***:~****:k****~ *:~*-.~ t ~ * r:~
1583 ;
061~ 2403 - 1S84 ECHO_B~CK_CMD ~ND ~L,~ ; Comm3nd ~= 0F0H
061C ~21607 158S MOV tREYERS_CH~NEL~,~L ; Rc~ersc Ch3nnrl Comm,nd 061F A10014 lS86 ECH0_8~CK_SURU hO ~X,tECU_~DDRESS~
0622 8904 1587 nov ~SI~,RX
0624 E9C600 1588 JMP TX_CCC_PUN
1589 ;
IS~0 ; ~ *~ C~i~pl~y ~mor~,J -~*~****~ **~**~*~ *~*~**~
1591 :
0627 885C05 lS92 DISPL~Y_~EMORY hOV 8X,tSI~S~ SSS Gis~lay ~morm ~`
062~ 8~4403 15q3 MOV PL,CSI +7 ~
062D ~20314 1594 MOV CTX COMM~ND~,~L
0630 8P4404 15~5 MOV ~L,CSI~4~ ; SI --- ECU ~ddrcss H
0633 BE0414 1596 MOV SI,TX_ttUFFER ll ECU ~ddrcss L

HElJLETT-PaCK~RC~ ~0~6 a~ bl~r SqUPBE LINE
0630 à20214 15~7MO~ tTX_LENGTH~,hL +2 Rx L-nQth 0639 81FB00B0 tS98CMP BX,8000H ~3 Conmand 063D 7310 1599 JNC DISP_MEM_5S17 063F 8a27 lo00 TX_TRNS2MOV r~H,CBX~ ; +4 T~ Len~th 0641 8824 1601 MOV tSII,~H+S T~ ~ddresc L
0613 46 1 02 INC SI ~6 Tx addre~ H

0645 FEC8 1604 DEC aL
0647 7SF6 lo0S JNZ TX_TRNS2 0649 BE0014 1606nov SI,ECU_~DDRESS
064C E99E00 1607JMP TX_CCC_RIJN
1~0~:
064F 81E3FF7F t609 DISP MEM_5517: aND 8X,7FFFH : Back Up M~m r;~ Dis~
06S3 269a27 1610 TX_TRNSB MO aH,ES:CBX~
06S6 88Z4 1611 MOV CSI~,~H

065a FEC8 1614 DEC aL
065C 7SF5 161S JNZ TX_TRNS3 065E BE00t4 1616 MOV SI,ECU_~DDRE5S
0661 E98900 1617 JMP TX_CCC_RBN
1613 ;
0664 8BSC05 1619 STORE_MEMORY MOV BX,CSI~5~ ; <C~ Store Memor~
0667 8a4403 ~620~OV aL,tSI~3~
066a a20314 1621MOV tTX_COMMaND],aL
066D 8a4404 1622 MOV aL,~SI+4~ ; SI --- ECU address H
1623 , ~1 ECU addr~s L
0670 a20214 1624MOV CTX LENGTH~,~L ; ~2 R~ Length 0673 81FBO080 ~62SCMP BX,3000H : ~3 Command 0677 73OE 1626 JNC STOR_MEM_S517 0679 8a6407 1627 ST_TRNS~ MOV aH~csIl7~ : 14 St Len~th 067C 8827 1628 MOV ~BX~,~H; ~S St ~ddres~ L
067E 46 1629 INC SI : ~6 St ~ddrecs H

0680 FEC8 1631 DEC aL

06q4 Eg9400 1633JMP TX_CCC_N RET
1634 ;
0687 31E3FF7F 1615 STOR_MEM_S51 ~ND BX,7FFFH : B~cl~ Up Mc~oru DiCpl3'J
068B 81FB0001 1636 CMP BX,100H

0691 E97700 1638 JMP TX_CCC_N_PET ; Sokow~ Interrupt T~tle 0694 3a6407 163g ST_TRNS3 MOV ~H~cBl~7~
0697 268a2, 1640 MOV ES CBX~,aH
069a 46 1641 INC SI

069C FEC8 1643 DEC aL

oOa0 E96800 '645 JMP TX_CCC_N_RET
1646 ;
'o47 ; ~ *~ CCC ~ Data Froce~sor ~ Drop Procec~or **~*
1o648 ;
06a3 33C602 1649 CCC DROP CMD aDD SI,2 06~6 EB0000 16S0 C~LL LOaD TO DROP
06~9 E9SF00 16S1 JMP TX CCC N RET
'6S2 ;
1653 ; ************ Forced Tunin~ --- Nth Con~rter *~**~*~***~*~**

.

HEWLETT-F~CK~RD: 8 086 ~s-cnbler SOURCE LINE
16Y4 :
06RC 8~4404 1655 FORCED_TUNE: rtov ~L~rsI+4~ , SI --- ECU H ~sdrcs506~F ~22807 16S6 t~toV tlC_BYTE~,~L ~ +1 L ~ddr~sc 06B2 E80000 1657 C~LL IC DROP t,EvICE : +~ Tx Data L~r,dth 06B5 E80000 16S8 C~LL CONV_TQ_DROP ; +3 Command EOH
06B8 8~sco5 1658 ~ov BL,~SI+s~ ; +4 Con~erter NQ.
06BB aoFB64 1660 Ct~P 8L,100 ; +S Tuninq Char,nel 1662 :
06C0 E80000 1663 FQRCEG_ON: C~LL BINDEC_LED
06C3 EB0000 16B4 C~LL LE D_VI EW_TBL
06C6 E80000 1665 C~LL SPU LED_D ISP
06C9 E80000 1666 C~LL RUN CONVERTER
06CC E80000 1667 : 5~LL ~KE~RI_DE_QN
06ÇF E~3900 166a JrtP TX CCC ~ RET
1609 ;
06D2 E80000 1670 FORCED_OFF: CPLL OP_SPU OFF
06DS E93300 1671 Jt~tP TX CCC N RET
1672 ;
1673 ; ******~*~**~ SPU to CCC S~nd **~**~*~*~*~ ***~*~*~
t674 ;
06D8 BE0214 ~675 ~PECI~L_SPU_l: t~tOV SI,TX LENGTH
o6De BB0207 1C?6 ~ov BX, INDE~,~ RX 1 06DE C60441 1677 nov BYTE PTR CSI~,65 06E 1 C6440100 1678 ~OV BYTE PTR t~I+1~,0 06E5 83C602 ~67~ ~DD SI,2 06E8 8040 1680 t~tOV ~L,64 06E~ E9S2FF 16B1 J~tP TX_TRNS2 1682 ;
1683 ; %#*~ #~# Send to CCC ~#~ %~#~t#E~ltlt~ lt#~#~#~
- 1 6a4 06ED t~O~807 1685 TX_5Cr RUN: ~OV ~L, tTX BUSt FL~G~
06F0 3C00 1686 C~P ~L,0 06F2 7517 16B7 JN2 TX_CCC_N_RET
1688 ;
06F4 9~4C02 1689 TX_RIJN_SUB: ~OV CL,CSI+2 n6F7 FECI 16~0 INC CL
06F~ FEC1 16~1 INC CL
06FB 80F903 1692 C~P CL,3 06FE 7302 16~3 JNC TX YOSHI
0700 B1 03 1694 ~OV CL,3 0,02 880E1807 16g5 Tx_YOSHI: ~Q CTX_BUSt_FL~G],CL i ttt SI --- Start ~ddr~ss ~
0706 E841FB 1696 C~LL HDLC TX ST~RT ; ttt CL --- Data L~n~t.~ ~]l 0?09 F8 1697 STC
0?0~ C3 16~8 RET
16~9 ;
1700 ;
1701 ;
070B F8 1702 TX_CCC_N_RET: CLC

1704 ;
1705 ;
1706 ;

. _ . . . , . . _ . . .

HEWLETT-P~CK~RD: 8086 ~sc~mbler SOURCE LlNE

I '1~
1'16 ;
1717 -______-- -_--__--_--- _________________ 1718 ;~*~**~**~*~ *****~*~*****~*******~*~*t~*.~*
1719 *~***~****** Su~routine ********-~******~*~**~-~*~**~**~ **~**~ t 17~0 ;*~ ******~**~ ** k**~ * ~** ~ t~ ~* ~ ~ ~** ~ ~
t721 - --- - _----_-___________________ ___.
1722 ;
1723 ; ****~****** ECU ~ddre~s Read Routine **************~*~*~ *
1.24 ;
070D BaO001 1725 ECU_~DRS_RE~t>: MOV DX,ECU_L_~DtlRESS
0710 EC 1726 Ih ~L,DX
0711 8~E0 t727 MOV ~H,~L
0,13 B~0201 1'28 MOV DX,ECU H ~DGRESS --0716 EC 1.29 lH ~L,DX ; ~H = L , ~L = H ~ddr~_.
0717 ~30014 1730 MOV tECU_~DDRESS~,~X
071~ C3 1731 - RET
1732 ;
1733 ~***~ Tiner Table Initiali e ******~**~ ******
~7~4 ;
071B BE0003 1735 INIT TIM_T8L: MOV SI,TIME_T~8LE
071E BB0000 1'36 MOV BX,0 0721 C600FF 1737 INIT TIM LP: MOV BYTE PTR tSl~CeX~,0FFH

07Z5 31FB8Q00 1739 CMP BX,12~
0729 7SF6 1740 J~Z I~IT TIM_LP

1742 t 1743 , ~ Event Tin~r table Initiali,e ****~**~*~******~*~*~
1~44 ;
072C BE0006 1745 INIT_EY TIMER: MOV SI,ES_EVENT_TIMER
072F BB0000 1746 MOV BX,0 0732 26C60000 1747 INIT_EV_1: MOV BYTE PTR ES:tSI~tBY~!0 0736 43 174a I~C B`,~
0737 a1FB0003 1749 - CMP BX,12a~6 073B 7SF5 17S0 JNZ INIT_EY_1 17S2 :
1753 ; ~****~****** JUMP_~DDP~ESS T 3b 1e Initiali2e ~***~*~ ****~ *~
1754 ;
073E E80300 17S5 INIT Jurp-TBL: C~LL INIT_W~_DOKO
0741 E90000 1,-56 JMP OP INITI~L
0744 58 1757 INIT_~_DOKO: PBP PX
074S ~31C07 1758 MOV CINIT POINT~,~X
0748 BE~003 17S9 MOV SI,JUMP ~DDRESS
0740 BeO000 1760 MOV BX,0 074E 8900 1761 INIT JUMP_LP: MOY CSIJCBX~,~X
07S0 83C302 1762 ~DD BX,2 07S3 81FB8000 1783 CMP BX, 12a 0757 75F5 1764 . JNZ INIT_.IUMP_LP
0759 E~0300 1765 C~LL B~SE W~ DOKO
07SC E90000 1766 J~P BPSE P.OUTINE
07~F S8 1767 B~SE_W~ DOKO: POP ~X

. .

~ 269 t 338043 HEWLETT-P~CK~RD~ 8086 ~ ~n~l~r SOURCE L I NE
0760 a31~07 1~68 ~O~ CB~SE FOI~IT~,~X

17,0 ;
1,71 , ~****~*~*** 6~51C_BUTHO T.~ Initi31i7 ~******~:~***:4*~*4*
1772 , 0,64 BE0001 1773 INIT_~UTHO_TBL: MOV Sl,PC FC Ll5T
0,67 BB0000 17,4 MOV 8X,0 076~ C6000q 177~ JUNKO: MOV B~TE PTR tSI~CE.X~.0 076D 43 17?6 INC BX
0,6E 81FB000! 1777 CMP EX,254 0,7 ?5F6 1,78 JNZ JUNKO
1, ,9 J
0774 BE8001 1~80 MOV SltBasII` ~UTHO
07?7 B8n100 1781 MOY BX,1 077~ C6003F 1782 JUN: MOV BYTE FTF. tSl~t6X~,3FH

077E 83FB5~ 1,84 CMP BX,90 0?83 C3 1786 RET
1~87 :
1788 ; *~***~ Vi~u Ch~nn~l Tibl~ Initi31ize *********#*~*#*****
1789 ) 07 e4 BE1000 1~90 lNlT_VlEW_TBL: MOV SI,VlEW_I:HaNNEL
0787 BB0000 1791 MOV BX,0 , 54.53,Sc.S1 50.C .C1.l:li 078~ 8~E3 1792 INIT_YIEW_LP: MOV aH,BL
078C FEC4 1793 I NC aH
078E 80CC30 1794 OR ~H,30H
0791 C60030 1?95 MOV B~TE PTR tSI~C6X~J3OH
0794 886008 1796 ~OV B~TE PTR tSl~tBX~8J,~H
07g7 ~3 1~7 INC BX
0798 83FB08 1798 CMP BX,8 0798 75ED 1?99 JNZ INIT VIEW LP

1801 ;
1802 ; ~*~*~*~ EVENT T~bl~ MODE Initi~1ize **~**~***##******

079E BB0006 1804 EYENT_t~TB_CL: MOY BX,ES_EVENT_TI~EP~
0,~1 26C70,FFOF 180~ CHlHaRU: MOV WORD PTR ES:tBX~,0FFFH
07~6 83C302 1806 ~OD 8X,2 0,~9 81FB0009 1807 C~P BX,ES_EVENT_TIMER~128*6 07~D 72F2 1808 JC CHIHaRU
1809 ~
0,QF BE0009 1810 MOV Sl,EYENT NO FREQ
0782 B120 1811 MOV CL,32 07B4 C744400100 1812 LP1: rov WORD PTR CSI~32~2~.1 07B9 83C602 1813 ~DD SI,2 07BE 80F93F 1815 CMP CL,63 1817 , 07C3 BE0009 1818 MOV SI,EVENT NO FREQ.
07C6 BB0002 1819 MOV BX~CH_NO_FREQ
07C9 B140 1820 MOY CL,64 07CB 8BI37 1821 LP2: ~OV ~X,tBX~
07CD 89848000 -1822 MOV tSI~64*2~.aX
07D1 83C602 1823 ~DD SI.2 07D4 83C302 1824 PDD BX,2 .. , . . . .... . . r~ ,. . . .

HE~LETT-P~C~RD: 80a6 Rssem~lcr 07D9 80F980 1826 CMP CL.. 128 07DC 75ED 18~7 JNZ LP2 18~8 ;

1830 ;
1g31 ~*~*~*~#**4 PC COGE ~ PR_CODE Init~ e ****~****~****~**~
1832 ;
07DF BE2000 1833 INIT_CODE: MOV SI,PC_CODE
07E2 B80000 1834 MOY BX,0 07ES C7000000 1835 INIT_COGE_LP: MOV ~ORD PTR tSI~8X~,0 07E9 83C302 1836 ~DD BX,2 07EC 83FB10 1837 CMP 8X,16 07EF 75F4 1838 JNZ ~NIT CODE_LP

1840 ;
1841 ; ~*~#~**~#~ Convcrter Fre~ ncy C~lc~l~éiqn ~*~#*~ #~
1842 ;
07F2 C7063P0703 1843 FREQ_C~LC: ~OY IJORG PTR GS:tMIJL_RDR~,~UL_NO
07F8 B90000 1844 MOV CX,0 ;P-CRBLE
07FB B84000 1845 MOV ~X,64 07FE 48 1846 C~L STDR: DEC RX
07FF E81500 1847 C~LL 'FREQ_CRL
0802 3D0000 ~848 CMP ax~ o 080S 75F7 1849 JNZ C~L_STD~
0807 89FF00 1850 nov cx, OFFH ;B-C~BLE
080~ B84000 18S1 ~OV PX,64 080D 48 1852 C~L_STDB- DEC ~X
--080E E80600 1853 C~LL FREQ_CRL
Q811 3D0000 18S4 CMP ~X,0 0~ 7SF7 18SS JN2 CRL_STDB
08-16 C3, 1856 RET
18S7 ~ -STD FREQ. C~LICULRTION SUBROUTINE========
0817 80E120 t858 FREO_CRL: ~ND CL~00100000e 081~ 50 1859 PUSH ' RX
0818 8BD0 1860 MOV DX,RX
081D 754E 1861 JNZ UP64 ;B-CRELE ====~UP64 081F 3D0000 1862 UP64_D: CMP R~0 0824 3D3F00 1864 C~P RX,63 0829 3D0600 1866 CMP RX,6 082C 7335 1867 JNC CH6_6~ :CHRNNELL ~PE F~13~ 6 TO 62 082E 3D0400 1868 CMP RX,4 0831 733S 1869 JNC CH4_5 ;I`H~NNELL RRE FROM 1 TO S
0833 BB4B01 1870 MOV B;',331 0836 F6263R07 1871 ~ULTI~ ~UL BYTE PTR DS:t~UL RDR~ :CH_NOY3 083R 03C3 1872 ~DD aXtBX :CH NO~3~aFFiE
083C 80F900 1873 ~DDER: C~P CL,0 1875 ;:;: RDD DX,64 ;64 OR 63 ~?????
0841 80E403 1876 RDDER 1: ~ND RH,00004011B

0845 DOC4 1878 ROL ~H

0849 DOC4 1880 ROL ~H

.. . . . . . . . . . .

~r 271 1 338043 F~ DsT~ DsT ~ El LETT-PqCXaVD~ 8086 a~ b LOC~ttOI~ o ~ICCT cooc Lll C 50URCE LIUC
4D DOC4 1882 ROL au O~f D0C4 1 a-3 QOL au ~--1 ~E~ lus~ OR au CL
0--53~0002 18a5 r OV 8X Cu_UO_FREO
F2 luq6 I-OV Sl.DX
0858 n3F2 18Rr aDD 51 DX
0--5R 8Y00 1888 I'OV IBXttSI~ ax STOVE tu o IlS
0-5C 5- 1aq9 ooP ~x 085D C3 1a~o IIET
1~q1 :
0--5E -0-" 1--2 2ERO rlov ax o c~o~ Iq~ J~p aDDER
1 8q4 1 ______ 08~3 8--Sr~ 1R~5 cu6 6Z hOV 8X 3~3 0866 E8CE 1aq. J~ hUl_T I
1~q' ~
O---- 8--~D01 18--8Cu~_5 Ov Bx 313 01~6 EBC9 18 J~ IlOLT
~0 1 0--6D 83e2~- 1 1Ol UP6~ aDD DX 6~ 64 63 l~hlch~7?
o~ro EBaD '' n~D UF6-_D
~90 IqO4 1 ~- : J~p-n Ch-nn~l U
~5 ;
08r2 E00-2 1qU~ CUO IIIEL_HqBEI nov Sl Cu_XO_FcEO
0--~ 8q51~0 ~?107 ~IOV CX 05~u J-p-n 08rq 89sC8EOO Iq-8 1 OV CS1~71 Zt CX
IqO' ;
S-7C 96640 Iq1~ nov CX,~066U ; J-p-n 3 0--7F 8m920- 1ql 110V ISI~ 3-21 CY
Il-- J ~8--40 Iql nov CX 40q--h ~ J-p~n 4 2` ~q C9~00 1--1~ ~OV 151~7--~Z~ CK
Iql~ ;
8~--E40 Iql~ 110V CX,408Eh ~ J~p n 6 0-8D 89-C8q-- Iql- ~OV 151~76 21iCX
191~ .
08~1 tl~340 Iql9 hOV Cx~o97h J--p--n q 0~94 ~96C~COO 1~0 nov ~SI~ e~z~ cx 08~8 8~q~-0 1--'' ItOV CX,4~09~ J~p-n 10 O~ C~OO l ~ OV ~51~60~2~ CX
1q^~ :
089F ~ ~ f~ 5 nov CX --08FU J~p~n 12 0 2 878C~40- 1;~-- nov ISI~q2~27 CX
Iq:~t - D ov P~o~o~ R~pon~ no ~hilclb~t~
f 08~7 ~008 1~ DROP_RESFO~SEI nov Sl FROrl 08F BF
08~ ooOO 1q-" caLL LO~D_FROn_DROP D op P~oc~o~ no OBF D~t~ 0 FROn OBF 8F n~ utu~u 08P0 1 S Iq_ tC DQOP RESF uoP
D--aF :o~ 1ql- nov Sl FROU OBF_BF
oa~2 aa-~O1 1~-5 ~10V aL ~51~ L ~ C~ n~
o~nr5 ~COI 1~!3~ cnP ~L I
'----' ~-- ''~~ JZ DRoi RESP o~
0--~ 3C0~ 8 cnP aL~

HEWLETT-Pi~CK~RD: 8086 as~enbler SOURCE LINE
08eB 740B 1939 JZ DROP_RESP_04 08BD 3C94 1940 CMP aL~84H
08Bf 7S03 1941 JNZ DRUP_RESP NOP
09CI E99F00 1942 J~P DROP_RESP_%4 1943 ;
08C4 F8 1944 DROP RESP_NOP: CLC ; K~;~ D3t~ Nonc ---~ C`~=O

1g46 :
08C6 EBFC 1949 DPqP RESP_01: JMP DROP_RESP NOP ; ~01~tPOW.DETECT~
1g49 ; ~ +~ -=S=-==~ SI~-=C 1~ 2~===t s~C+4~==t~5~==
08C8 9a4402 1950 DROP_RESP_04: MOV aL~tsIl2~
0%C8 ~22C07 1951 j MOV tlD_BYTE~,~L
OaCE E80000 1gS2 C~LL ID_DROP_DEtICE
1gS3 :
08D1 BE200% 1g54 - MOY SI,FRqM_QeF BF
08D4 8~4C03 1955 MOV CL,CSI13~ ; C04~ID_B;TE~tO2~00~CT~TUS3 08D7 80F900 19S6 CMP CL,O , 99 -~
08D~ 7466 1957 J~ PESP_VLF_ERR
08DC BF8000 19S8 MO DI,YLF ERRqR Map 08DF B700 19S9 MOY BH,O
081 8~1E2C07 15~0 . MOV BL,~ID_BYTE~
08E5 03DB 1961 aDD 8X,BX
08E7 8121FEFF 1962 aND WORD PTP CDI~CPX~,OFFFEH
1963 :
OgEB 8~6C04 1964 MOV CH,CSI~4~ : 02 90 08EE 80FD00 19~S CMP CH,O
08F1 7402 1966 JZ RESP ST~TUS
- O~F3 EBCF 1967 JMP DROP_RESP_NOP
1968 :
08F5 8~5405 1969 RESP_STbTUS: MOY DL,tS~+S~ ; C Status ~
08F8 80E204 1970 ~ND DL,4 : S ~ # # ~ P # #

08FD 8~S405 1g72 RECENT_ON: MOY DL,~SI+5~
OgOO E80000 1973 C~LL CON _SW BIT ~L ; SPU R~ccnt Power 1~N
OgO3 8OE280 1974 ~ND DL,8OH ; ^ I
0906 7411 1g75 JZ CONV_SW_O ; Conv~rter Seler~ SW
0909 8~262607 1976 CONY SW 1: MOV ~H,~DROP NO~
OgOC aOE401 1877 ~ND ~H,1 O90f 7S18 1978 JNZ CONV SW SET
0911 0804 1979 OR CSI~,~L
0913 E80000 1980 C~LL JUMP ~DRS INIZ
Og16 E91000 19a1 JMP CONV_SW_SET
0919 8~24 1932 CONY_SW_O: MOV ~H,tSI~
091B 343F 1983 XOR ~L,3FH
Og1D 2004 1g84 ~ND tSI3,~L
Og1F E80000 198S C~LL DROP BIT ~L , 10,~19 Henkou 1!!
0922 22C4 t986 ~ND ~L,~H
Og24 7403 1987 JZ CONY_SW_SET
0926 E80000 1g89 C~LL JUMP ~DRS INI~
Og2g E80000 1989 CON~_SW_SET: C~LL JUMP_~DRS INIT
092C F9 19gO CLC
092D C3 1g91 RET
1 g92 092E 8~540S 1993 KEY_DEPRESS: MOV DL,CSI+5~ ; I
0931 80E202 1994 ~ND DL,2 : K~J Curren~ De~recsed 0934 740~ 1995 JZ ELSE_ST~TUS
_ .

HEI~LETT-P~CK~RC: 4086 ~ mbl~r 1 3 3 8 0 4 3 - SOURCE LI~E
0936 B01C 19g6 MOV dL,KE~_PU~H_COtE
0938 ~28907 1997 ~OV CKE~_D~T~ L
Og3B E80000 1998 CdLL DROP_TO CON'.J

093f C3 2000 RET
Og40 F8 ~001 ELSE ST~tUS: CLC

20q3 ~ .
0942 E80000 200. RESP '.'LF ERR: CdLL DROP TO_CONY
0945 BEB000 _00S MOY Sl,VLF ERROR_MAP
0948 B~00 2ao6 MOV BH,0 094d 8~1E~C07 2007 ~OV BL.tlD BYTE~ ;
094E 03DB 2008 ~DD BX~8X
09S0 8800 ~009 ~O~J QXJtSl~tBX~ :
09~2 0S0200 c0t0 ~DD dX~2 09S5 3S0100 ~011 XOR dX~1 :
O9S8 8900 2012 rtoY tSI~tBX3Jd`:
O9S~t DOC8 ~013 ROR dL
095C ,303 2014 JNC VLf_ERR RET .:
O9SE E80000 c015 CdLL JurtP ~DR5 INIT
0961 F8 2016 'Y'LF_ERR_RET: CLC
d96. C3 ~0~7 RET
2018 ===~=s==~===55~5=~s~==5s===============~=====~================
0963 8Q4C03 201g DRdP_RESP_84: MdY CLJtSI13~ ; t84~tlD~'DROP~ C01~t1'E'1']
0966 80F900 2q~0 CMP CL,0 0969 ~42D 20~1 J2 RESP_84_NRET
- 2022 ;
096B B~6402 202 ~OV dHJtS~ H ~ = ID_B~TE
096E 88~62C07 2024 MOY tlD_8'r'TE~,dH
2g~5 ;
0972 E80000 2026 CdLL ID_DPI~P_t`EVlcE ; ---S CONV_Nd J DROP_N5 r C~E'~-ICE_Hd 097S E80000 2027 C~LL DRdP_TO_CONY

0978 B~6C04 2029 ~OY CHJtS1~4~
0g7B 882E8907 2030 ~OY tKE~_D~T~.CH
~031 :
09~F BEB000 2032 MO~ Sl~-'LF_E~R5R_MdP
0g82 B700 2033 ~OV BH,0 0984 8~1E2C0i L034 ~tOY BL,tID_BYTE~
0aB 03DB .035 ~OD BX.B:~
098~ 81~0FEFF n3B ~ND WORD PTR tSl~tBX~J0FFFEH
L03~ ;
098E 80FDFF .038 CMP CHJOFFH
0g~1 7402 ~03g J SENS_ST~TUS
0993 F9 ~040 STC : Pu~h l'~J B~r.t ---' C'~'=t 0~4 C3 .041 RET
~0~2 :
09~5 E80000 c043 ';ENS_STdTUS:. C~LL SPU_ST~TUS_RE~ : 0FfH ---S N.~ 'J St~ k~
O~ t Fr9 2044 BESF_:34 NRET: CLC
0,~9 C3 2045 RET
204~ :
2047 ;
2048 ;
04g GLOB~L SPECI~L_SPU_1 c050 ;
20S1 ;
20~2 ;
.

HEWLETT-P~CK~RD~ 3036 ~ss~m~l~r SOURCE LINE
2053 EXTRN PQ~ER DET_C~D
2QS4 EXTRN LO~D FRQ~ DRQP
2055 EXTRN LO~G TQ DRQP
2056 EXTRN SPU ST~TIJS_RE~

2059 EXTRN CQNV SW_31T_~L
-2060 EXTRN DROP BIT ~L
2061 EXTRN SPU REL~Y OFF
2062 EXTRN SPU CLE~R_DI';P

2064 EXTRN DROF ~P SET
206S EXTRN ~EY QPER~TION
2066 EXTRN CQN'~ TO DROP

2068 EXTRN BINDEC_LED

2072 EXTRN W~E~RI DE ON

2074 EXTRN OP_INITI~L
20?5 EXTRN 3~SE_ROUTINE
2076 EXTRN JU~P ~DRS INIT
2077 EXTRN JU~P_~DRS_IN12 2078 EXTRN DEVICE_~P_SET
207~ :
2980 EXTRN P~Y GRQUP 1 2081 EXTRN P~Y_CROUP_2 Error~- o CROSS REFERENCE TABLE
SYMBOLTYPE ~-~
u Cî'RL_I A 433,777,801,836 S5 CTRLAAI COUNT A 444,778,798,833 88 CTRLAA2 A 445,738,752 39 CTRL_2 COUNT A 454,683,686,757 DEvlcE-MArAAsE;A E 1225,1227,1229,1231 l7^~ 7ls,~n78 DEVICEAANO A
DEVICE NO BIT A
DEVAACLRA ll98,l200 DEv-lNrî Lr A l2l l DEV NEXTA ll85 DEV_RbSP_WT A 1169,1177,1181,1189 20l DEV_SWA0 A l l95 1196DEV_SW_I A
DlSPLAY_MEb~ORY A 1546 Dlsp-Mr~-ssl7 A l599 DROP ACCESS / A
DRor Brr AL E l985,2060 l43DRorAcMD-BF A
230DROP_CMDAPORT A 293 23lDROP DATA roRT A 68l,829 DROP ~nT Lr A l2l8 DROP_MAP_SET E l223l2054 DROP NO A ll96,l976 l05DRor-No-i3rî A
1931DRor-REsroNsE A l264 IY48DRor-REsp ol A l937 l950DROP_RbSPAA04 A l939 0l9DROrAARESPAU A l942 DROP RkSP NOP A l933,l94l,l948,l967 DROP_TO_CONV E l998,2004,2027,2067 2l3 DRr NE1 î A ll6l DSI A ~ 7~ 177~17~1^n~ 132~133~134~13s~136~137~13s DS16 A l43,l44,l45,l47 8l DS2 A 82,83,84,85,86,87,88,89,90,9l92,93,94,95,96,97,99,l00,l0l,l02,lo3,lo4,lo5,lo6,lo8,lo9,llo,ll3 97 ECHO_BACK ADRS A
IsuECHO_BACK_CMD A l542 9l ECHO_i3ACK_FLAG A 447,922,l0l6,lll0,l446, ECHO_BACK_SURU A
Ecu-ADDRess A 162,163,164,999,10û6,1576,1'^6,1'^6,1616,1730 ECU ADRS_NEW A l265 ECU_ADRS READ A 46l,l278 232ECU_H_ADDRESS A l728 233ECU_L_ADDRESS A l725 00l~SE_STATUS A l995 EOI A
ESAABACK ur A l356 l83Es-BAcR-urAAl A 480,498,l353,l357 ~ 0,l~6,l^.67,l36s, lU ES BAC}C_UPAA2 A 4M~4ss~l3sl~l36o~l374 ES EVr~^r_îîMER A l3l9,l745,l804,l807 62 EvElrrACHANN~ A l3l6, 1604EV~T_DATAAACL A 472 EVENTAAENABLE A
EVeNT_REY CODE A
EVEANT LbD OFF E l206,2063 l53EvrNT NO FREO A l8l0,l8l8 9l4 Exi^r A 883,895,899 SYMBOL TYPE
72 A200N A 73,74,75,76 239 ACNC A 343,346,354,362,370,373,377,381,539,569,571,574,5t2,604,610,614,642,855,859,860,901,915,969,1023,1029 1031,1047,1048,1052,1054,1056,1082,1085,1091,1095,1097,1 100 238 ACND A l~5,lll,6l9,q57 208 ASCn AU A
212 Ascn CL A
218 ASCII_CO A

207 ASCn ER A
210 ASCn FC A
217 ASCII_NO A

209 ASCn-SC A

4K BACK UP_CKI A 490 504 BACK UP_CK2 A 509 514 BACK ur EXIT A 482,493,510 483 BACK UP_KAI A 479 512 BACK UP_NONE A 495 BASE ROUTINE E 1766,2075 241 BCNC A lSn,l5X,3~6,'^1,588 52 BIAS A 55,56,57,58,59,60,61,62,64,65,66,276 BINDEC LED E 1345,1663,2068 1459 CCC CMD_20_7F A 1456 1486 CCC CMD_lMPlJ3L A
1649 CCC_DROP_CMD A 1457 1898 CH4_5 A 1869 1895 CN6_62 A 1867 1906 CNANNEL_NOSEI A 471 1805 CNIH~RU A 1808 73 CN NO_FREO A 1819,1885,1906 I99 CLEAR KEY_CODE A
1464 COLD_START A 1461 n CONV_NO A 431,1~ 8,171(),1'~17,1~14,1342 104 CONV NO_BIT A 1337 117 CONV_SELECT A 434,435,436,437 1982 CONV SW_0 A 1975 1976 CONV_SW_I A
CONV SW_131T AL E 1192,1973,2059 1989 CONV SW_SET A 1978,1981,1987 CONV TO_DROP E 1334,13W,1471,1658,2066 CRQSS REFERENCE T~B~E

108 ExTRN_STaT a 530,862,876 1466 FORCED_KEY a 1459 1670 FORCED_OFF a 1661 1663 FQRCED_ON
165S FORCED TUNE a 1544 1482 FORwaRD_cMDTBL a t 454 1446 FORI~RD_CMD CK Q 1 ~So 1451 FQRwaRD_cOME a 1443 1476 FoR~aRD_JU~P a 1484 18S8 FREQ CQL a 1847,1853 1843 FREQ_C~LC a 470 14S FROM OBF BF a 1 141,1144,11SQ, I 1S8, 1 167,11.-0, 1?31, 18-:4, 1~54 1141 H~JI~El ~ 1143,114?
1139 HaJ I rtERuro a ~5l 568 HDLC_TX_STaRT a 1686 170 HISTORY_BUFFER Q 459, 35,824 952 HON a 1 lSO HON8aNl a 1152,1156 127 HSEI_LED
782 IEIF_l ST a 828 IaF-2ND a 780 785 IBF_E~PTY
790 IBF_EXIST a 793 774 IBF_INTERRUPT Q
82S IBF_ME~O a 823 S8 I BF_OVER_FLOW a 8Q3 IEtF_P~CKET a 789 8~0 IBF_RET a 7~3,826,e34 830 IBF_SET Q
101 IC BYTE a 1~33, t 37.,1467,1656 :;PIC DROP DEVICE E 1388, 1470,1657,2058 103 ID_BYTE a t 164.1180,t951,1360,2007,2024,2034 ID_DROP_DEVICE E 1165,1335,1952,2026,2057 169 INDEX_HISTORY ~ 16Q, 24,736,803,a25 - 82 INDEX_RX_1 a 427,16,6 86 INDEX RX 2 a 441,74 ,753 83 INDEX_TX 1 a 423,.76,796,831 8? INDEx_TX_2 Q 44q 1773 INIT_aUTHQ_TBL Q 463 1833 INIT_CODE a 465 1835 INIT_CODE LP a 1~38 1?47 INIT_EY_1 Q 1.50 t74S INIT EV TI~ER Q 473 1761 INIT_JU~P_LP Q 1.64 17S5 INIT_JUMP_TBL Q 515 95 INIT_POINT Q l 758 1737 INIT_TI~_LP Q 1740 1735 INIT_TI~ TBL Q 514 1792 INIT_VIEU_LP Q 1799 1790 INIT_VIEU_TBL Q 464 1757 INIT-wa-DQ~:o Q 1 75 23S INTlOFST Q 288 236 INT30FST a 2B2 234 I NT_OFST Q 286 7S Jut1p-aDDREss Q 1759 - JUMP_QDRS_IN}T E 1989,201S, 2~76 JUMP_QDR5_ I N I Z E l B8 O, l B88, 2077 ~ ` -- 278 1 338043 CROSS REFERENCE T~BLE
L~NE# SY~BOL TYPE FEFEREt~CE5 1782 JUN a l ,85 177S .JUNKO ~ 1,78 1271 KEY ~PPLIC~T a 12S8 130 KEY_D~T~ ~ 138,,11æ9~19q-.2030 160 KEY DaTP ST~CK ~ 161 1~93 KEY_DEPRESS
KEY OPERRTION E 1771.11,7,-065 20S KEY_PUSH CODE ~ Ig96 LED_~IEW_TBL - E 1664.7069 LO~D FROM DROP E 1147.1151,1168,1937,c054 LOaD_TO_DRqP E 1650,70SS
873 LQY ~ 86~
876 LOZ ~ ~71.~75 1812 L~1 ~ 181~
1821 LP2 ~ 18c7 12S LSB_LED
12S6 M~IN_LOOP ~ 1775,1279 424 MalN-sT~RT

1371 MOV_1_1NIT . ~ 1364 1363 rO~_1 ST ~ t354 13S6 rov 2 ND

1871 MuLrl a 18~6,18~, t08 ~UL ~DR ~ 1843,1871 191 MUL_NO ~ 18-3 1016 MY ~DRS ~ 1000,1002 1014 MY ~LOH~ ~
76 NEXT_CO_~DRS a 121 NOW_EVENT ~ 1311 r 1331 1S80 NO SEND ~ 1568 116 08F_8F_8YTE q 114 OBF_BF CMD a 4S3,7S6 ltS 09F BF_ID
113 OBF BF N Q 114,11S,116,117~446,688~6~9,691),755 -6i~ OBF_INTERRUPT
736 OBF MEMO ~ 734 7SS OBF_NEI~ ~ 740 722 OBF_P~CKET
?S9 OBF_RET ~ 7OOJ71-~72O
700 OBF_RET_1 ~ 703 131 ONE SEC TIMEP ~ 457 196 ONOFF_KEY_CODE
OP INITI~L E 17S6,2074 OP SPU OFF E 1670,2073 17S P~E_MEM ~ 4S0,733,822 90 P~CE SW ~ 4S1,9S0,996,1020 P~Y CROUP 1 E 1490.20~0 P~Y_GROUP 2 E 1492,~081 61 PC_CODE ~ 1833 137 PC_FC_EXIST
6S PC_FC LIST ~ 1773 193 PLUS_KEY_COGE
12_3 POLLINC SE~ ~ 1216 222 POP_~LL
POUER DET CMD E 1140,1149,20S3 138 POIJER_FEED ~ 432 : CRQS FEFERE~CE T~BLE
SYMBOL TYPE P~EFE~E~CES
20Z POWER_OFF COCE
201 POWER_ON_COGE
128 PPV_LED
SS PRQCR~VERSION ~ 503, 221 PUSH_~LL
2 6 R~r_CLE~R
27S R~ CLE~R LP

204 RELE~E_COGE
~02 RESPONSE_2 ~ 6?4 71~ PESPONSE_CHK ~ 69 ,69?,~09, 16 45 RESPONSE_TRNS ~ ~50 711 RESPO~SE ~L ~ '7 2044 RESP_94_NRET ~ 2021 1969 RESP_ST~TUS ~ 19G6 2004 RESP_VLF_ERR ~ l~S
141S RETTI~2 ~ 1407 92 REVERS_CH~NEL ~ 44a,5,5,1S72,1585 252 RUN ~ 1464 RUN_CONVERTER E 134~,1666,20 1 1 03a RX_CRC_ERR ~ 993 56 RX_CRC_ERROR ~ 10-:3,1039 57 RX_CRC_OK_fO ~ 9?4,?95 g90 RX_INTERRUPT
992 RX_RC~ a 1042 RX_RECEIVE ~ 992 1022 RX_RET ~ loo4~lno9~lo4o 19e SC~N_KEY_CODE
59 SC~N MODE FL~G ~ 467 5 SEIS~KU_DD a s2n 6 SE~SaKU ~M ~ 519 a SEIS~KU_VV ~ 521 7 SEIS~KU_YY ~ 51S
148 SEND ~DDRESS d 149,150,151,1S7S -150 SEND_C~D PESP ~ 15 o lSl SEND_D~T~_BUFF
14~ SENCI_EN~BLE ~ 143,15g?
15S2 SENC)_FUNC_~OD ~ 1 4%6 14g SEND_INDEX R 1 5G3, t SG6, 1 57~,15 4 200 SEND KEf_CODE
224 SEND_~ax 1566 SEND RESPONSE ~ 14~%
2043 SENS_ST~TU;~ ~ 2~139 561 SETCOY ~ 34E--, 351,355,359,363, 36 . . 3 . ' .: ~ B . 3S2 ! 54 O
16,S SPECI~L_SPU_l ~ ~049 SPU_CLE~R_DISP E 1205 2062 144 SPU_C~D BF a SPU_LED_DISP E 1665,2 O~ O
SPU_REL~Y_OFF E 1204~2rl61 SPU ST~TUS_REQ E 1166,2043,2056 177 ST~CK_END
178 ST~CK_T0P a 161? STORE_~E~ORY ~ 1548 1635 STOR_~E~_551 ~ I G ~6 16~7 ST_TPNS2 ~ 1632 1 639 ST_TK~S3 ~ 16:7,1644 t 338043 CROSS REPeRENCE TABLE
SY~4BOL TYFE ~._~i 1562 S F_M_CLR A 1555 110 TEMr_R_CN A 429,576,605,1086 237 T~4ERI OFST A 304 1391 TIIE4ER_ACTIVE A
1403 Tl~4ER CNK A 1292 la T~4ER COUNIER A 500,730,819,1297,1301,1348 1292 111l4ER_OFERAT A 1257 192 Tl~,4ER OUT_CODE A 1386 1396 Tl~4ER SLEEr A 1382,1384 1376 Tl-.4ER_TOB A 1352,1358,1361,1369,13731301 Tl~4ER_TOB2 A
1348 Tl~4ER_TYPE 2 A 1303,1306,1312,1326,1329 1297 T~4ER_YO A 1293 74 T~4E_TABLE A 1379,1735 79 TO_CCC A 439 78 TO_DROF A 426 134 TUNER_CBL A
132 TUNER_DI A
133 TUNER_D2 A

93 TX_BUSY_FLAG A 430,921,1109,1685,1f95 1702 TX_CCC_N_RET A 1449,1462,1494,1496,149~,r~ I~A~l504~15~A6~1508~lsl0~l5l2~l5l4~l5l6~l5l8lC~ 77li~4lc~ lc~ n 1532,1534 1sl6,lCl8,lun l~h,l''A"I''I,I' ,I'~'~,tf'8,1f45,1651,1668,1671,1687 1685 TX CCC_RUN A 1578,1588,1607,1617 163 TX COMlv.tA'ND A 1594,1621 162 TX LENGTH A 1597,1624,1675 la9 TX RUN_SUB A
1600 TX TRNS2 A 1605,1681 8,6 TX_UNDRN A
1695 TX_YOSID A 1693 1901 ur64 A 1861 1862 ur64 D A 1902 135 UF_FLAG A

64 VkF_ERROR_MAF A 1958, ,2A-~
2016 ~IrLF ERR_RET A 2014 645 WAtT A 594,595,596,597,598,599,600,601,635 WAKfiARl_DE ON E 1667,2072 1569 YES_SEND A
1892 ZERO A 1863,1865 ~, 281 HEI~LETT-P~CK~RC: 8086 ~ nbl~r t 338043 SOURCE LINE
1 '80 3 *$*****#***#*******.~*******.~*******~******~*~***********~****~***.
4 ;
5 SEIS~KU_~D: EQU 02H
6 SEIS~KU_~: EQU 12H
7 SElS~KU_'~'t: EQU S~H
R SEIS~KU_'~': EQU 7 ~ r-ion Ho.
g ; ~ * * **
t0 :~**~ <;~ ~pplic3t~0n .~.~
Il :*~*#~ =====
1 Z ; '1~*~
13 ;*~*** ------ By ~.T~ K~ ------14 ;*~**~
lS ~**~** Function 16 :****~ -- SRU K~y l,.3nt,rol 17 :***** 6 Drop K 4 SRIJ ~ 2nd Subi.~r~b~r 18 :~***
19 ;***** ;2j --- R~m B-3ck Up 20 ;*~***
21 :***** (3) --- H.3rdw3r~ C~l:ck 22 ;****~

23 ;~**** Off Ev~nt Con~ ~ SIJ . D~s~ic~ ~o. ~:3 D~git~
~4 ;~ Off S~nd' R~vr~s~ D3t,3 S~n~
2S ;~ Ev~nt E.~nt LED On 26 ;~*~*~
2~ **
28 ;*#~*~
~9 ; **~*~
30 ;~
31 ;~*~
32 ;#~*~*
33 ;******~ *~*~********~*******~*****~***********~*~*****~***~**_ 34 ;SSSSS
35 ;SSSSS ~;' B,J,3 Li-t `,"
36 ;SSSSS
37 ;SSS*S ~1~ 2~ 2n~ Sub. d_ Conv~rt~r OnHOff 33 ok3,hii 3~ ;S~SsS
39 ;SSStS
40 ;SS~SS
41 :SSSSS
42 SS~SSSSSSS~S~ssSSs*~s~lSi~S*~*si*SsSs~ ss*s~ i 4S ;
46 BI~S: EqU 0000H
47 , 48.
49 PRûCRa~ERSION: EQU BI~S , DS 4 S0 RX_CRC ERROR: .EQU B1~514 , DS 4 51 RX_CRC OK YO: EQU B1~5+8 ; DS ~
52 IBF OVER FLO~: EqU BlaS+12 ; DS 2 53 SC~N_~OQE_FL~C: EQU BI~S+11 : DS 1 54 VIEU CH~NNEL: EQU BI~S+16 ~ DS 8*~
55 PC_CODE: EQU BI~S~32 ; QS 8*c 56 EVENT_CH~NNEL EQU BI~S+4 ~ QS S
57 ; , Eau B1~5+58 ~ `
HEI~LETT-P~CK~RD: 8Q86 ~ bl~r 1 338043 SOURCE LINE
58 VLf_ERP~qR_~P: EQU 81~5+1 3 ; rs 128 59 PC FC_LIST: EQU eI~5~2~6 ; D5 123 60 B~SIC_~IlTHO: EQU BI~5+2 6+128 ; GS 128 61 : BI~S+S12 6~ :
6~ ~20QH: EQU 20OH
67 CH_NO_FREQ EQU ~200H ; D5 256 FRE4UENC`; T~BLE ~T~PT FPO~ HEPE
68 TI~E T~BLEI EQU ~20OH+10OH ; 3~8#2 69 JUMP_~DDRESS: EQU ~200H+180H ; 3*8*2 70 NEXT_GO_~DRS: EQU ~200H+200H ; 64*~
71 --- 4aOH
72 TO_DROP: EQU 0S00H
73 TO_CCC: EQU 0600H
74 ;
7~ DS2: EaU 0700H
76 INDEX RX 1: EQU DS2+2*1 77 INDEX_TX_1: EQU DS212*2 78.CTRL 1: EQU DS2+2*3 7g CTRL_1_COUNT: EQU DS2+2#4 80 INDEX RX 2: EQU DS2+2*~
81 INDEX_TX_2: EQU DS2~2~6 82 CTRL_2: EQU DS2+2*f 83 CTRL 2 COUNT: EQU DS2+2~3 84 P~GE_SU: EQU DS2+2*9 85 ECHO_B~CK_FL~G: EOU DS2+2*10 86 REVERS CH~NEL: EQU DS212~11 87 TX_BUSY_FL~G: EQU DS2+2b12 88 B~8E POINT: EQU DS2+2~t;
89 INIT_POINT: EQU DS2+2*14 g0 BIN~RY LED: EQU DS2+2*1 91 ECHO_B~CK_~DRS: EQU DS2+2*16 g2 93 CONV NO: EQU DS212~18 94 DROP_NO: EQU DS2+2~19 95 IC BYTE: EQU DS2+2~20 96 DEvrcE_NO: EQU DS2~2*21 97 ID_BYTE: EQU DS2+2*22 98 CONV NO BIT: EQU DS2+2*23 99 DROP_NO_BIT: EQU DS2+2*24 100 DEYICE_Na_8IT: EQU DS2~2*25 102 ~UL_~DR EQU DS2+2*29 ; D5 2 STORE #3 103 EXTRN_~T~T EQU DS2+2*30 ; DS 2 104 TE~P R CH EQU DS2+2*31 : G5 2 t 0~
106 ~ 740H
107 OBF_BF_N: EQU D52 2~32 ; qQQ0 Q0rJ0 108 08F SF C~D: EQU OBF BF N11 109 OBF BF ID: EQU OBF eF N~2 110 OBF_BF BYTE: EQU 08F aF N+3 t11 CONY SELECT: EQU OBF BF N+16 ; t-5 8 ~12 113 ;
114 DS1: EQU 078QH

HEldLETT-PbCKdRD: 8086 ds~mbI~r ¦ 3 38 0 4 SOURCE LINE
lt5 NuL EUENT: E~U DS1 t16 BEFOR_E~.'ENT: EeU DS1~1 117 EYE~T_EN~8LE: EQU DS1+2 11~ LS8_LED: EQU DSl~4 120 n,8_LED: EQU DS1~5 121 HSB_LEQ: EQU DS1+6 122 PP'~_LED: EQU DSt+ f 1~3 1~4 KE't_Q~Td: EQU DSl+9 12S ONE SEC_TIMER: EQU DS1110 126 TU~ER_D1: EQU DS1l11 7 TIJ~ER_D2: EQU DS111c 128 TIJHER_CEL: EQU DS1+13 129 UP FLdl;: EQU DS1+14 130 QOI,)l~_FL~G: E~U DS1+15 131 FC_FC EXIST: EQIJ DS1+16 132 PO~ER FEEQ: EQU DS1117 133 ;

136 DS16: EQU 800H
137 DROP_CMD_8F: EqU DS16 ; D5 16 138 SPU_C~D_8F: EQU DS16~16~1 ~ DS 16 139 FROM_OBF_BF: EQU DS16+16~ ~ DS 16 141 SENG_ENb8LE: EQU DS16+16*3 ~ DS 1 14- SENQ dQDRESS: EQU SENQ ENbBLE+l ~ DS 2 1~3 SENG_INDEX: EQU SEND ~QDRES5~2 ~ DS 1 ~44 SEND_CMD_RESF: EQU SENQ_bQQPES5+3 ~ DS 1 11S iEND_DdTd_BUFF: EQU SENQ_dDQRESS+4 , QS 123 147 E'~ENT_~O_FREQ: EQU 900H : DS 2S6 150 HELP: EQU 0d00H
1S1;
1~2 : ____________ 1S3 :
154 KET_QdTd_ST~CK: EQU 1000H DS 16*64=10~4 155 ECU_~DQPESS: EaU KEY_QbTb_STbC~'+16*61 ; DS c 156 TX_LENCTH: EQU ECU_bDQRESS+c ~ DS 1 157 T'X_CI~MMdND: EQU ECU bDDPESS~3 . QS 1 158 TX_8UFFEP: EQU ECU_bQDRES5+4 .~ Q5 256 161 :
162 TIMER_COUNTER: EQU 2000H-4 163 INQEX HISTOR't: EQU 201~0H-c 164 HISTOR't_8UFFER: EQU 200aH
1~5 1~8 ~
169 FdGE_MEM: EQU 3000H

171 STbC~ END: EQU 39FFH

, ~E~dLETT-I ~crARD ao 6 asS =bI r 1 3380 43 /

172 STdCK_TOP: EQU 4000H
~73 ;
174 ; ~ BdCK_UP R~ Qre~ **~****~*~****-~*******~
17~ ;
176 ES_BdCK_UP: EQU 0 ; DS S12 177 Es-Bac~-up-l: EQU 200H ; DS 512 178 ES_BdCK_UP_2: EQU 400H ; DS S12 179 ;
180 ES_EVENT TI~ER: EQU 600H ; DS 123*6 1 182 ;
183 ; ~*~ di~te D~t~ ~*~*~*~**~*~**~~
184 ;
185 ~UL_NO EQU 3 - 186 TI~ER OUT_CODE: EQU 0 187 PLUS_KEY_SODE: EQU 10H
188 EVENT_KE';_CODE: EQU IIH
189 dUTHO KEY CODE: EQU 12H
Ig0 ONOFF_KEY CODE: EQU 13H
191 ~INUS_KEY_CODE: EQU 14H
lg2 SCdN_KEY_CODE: EQU 15H
193 CLEdR_KEY_SODE: EQU 16H
lg4 SEND KEY_CODE: EQU 17H
195 POWER_ON_CODE: EQU 18H
196 POWER_Off_CODE: EQU 19H
197 RECENT_ON CODE: EQU 1dH
198 RELEdSE_CODE: EQU 18H
199 KEY_PUSH_CODE: EOU lCH

201 ~SCII_ER: EQU 4572H
202 ~SCII ~U: EQU 41S5H
203 dSCII_SC: EQU S343H
204 ~SCII_FC: EQU 4643H
20S ~SSII_PC: EQU 5043H
206 dSCII_CL: EQU 434CH
207 ~SCII_SE: EQU 534SH
208 dSCII_~D: EQU 4164H
209 ~SCII_DE: EQU 6445H
210 d5CII_NU: EQU OD49CH
211 ~SCII_NO: EQU OD4DCH
212 dSCII_CO: EQU 43DSH
213 dSCII PR: EQU 5072H
214 ;
21S PU~H_dLL: EQU 60H
216 POP_dLL: EQU 61H
217 ;
218 SEND_~dX: EQU 64~2 21g ;
220 ; - - --------_--------------------________ ~21 ; ~O Por~ **~**~*****~*******~**~**~ *-~
222 ;-_----_---______-_-___________ 223 ;
224 DROP_C~D_PORT: EQU 082H
22S DROP_DdTd_PORT: EQU 090H
226 ECU_H_dDDRESS: EQU 0102H
227 ECU_L_dDDRESS: EQU 0100H
228 INT_OFST EQU 0~0H+~5*4 _ -- 28~ 1 338043 HEI~lLETT-p~;c~ RD: Bd96 f~ mbl-r sr7uRoE L ~IE
229 INT I QFST EQU ~ ' T ~) CI F s T E Q U
23 I T I MEP I QFST EQU ,. ,?
232 ~C HD EQU ~ d 2~3 ~CHC EQU d~
234 ECHD EQU d' - 5 BCHr EQU r,6 2'-' 39 QRG l OOOH

.40 241:
1 O SEaO03 242 OIlMP_~t!kS INIT: MQY Sl, JUMP_~tiPPES;
1003 B700 243 MQY BH. O
1005 S~lE2Cd7 244 MO'r BL.tlB_E'-TE1 lOa9 02DB 24S dDD BL,BL
I OOB 9BOE 1 C07 246 MOY C,', t I ~ I T_PQ I NT 1 I OOF 9908 247 NOY tS13 tBX ] C,;

~49:
~SO:
1012 BE8003 2SI ~UMP_~t!kS_lNlC: MOY Sl . .JIIMP_Ht!BPESS
I 01 S B700 - 52 MOY BH, d 1017 8~1E28q. 253 I~IOY 6L,tlC_t~l'TE]
10113 02DB -~S4 ~DD BL,BL
lOlD 880ElC07 25S MQY SX,tlNlT PQINT]
1021 8908 256 rloy t ~ 1] t E: ' ], O ,' 1023 C3 .57 FET
:~8:
~9:
1024 8E8003 .60 JIIMP_~DPS_IN12: MQY Sl . JIIMP_~tiDkESS.
1027 B700 '61 ~OV BH, d I 0 9 9al E2C07 262 MOV BL, t ID_B -'TE ]
102D 80F301 263 XQF! BL,1 1030 02DB 264 ~DD BL,BL
1032 3BOEIC:0,265 I~IOV CX,tINlT FQII~T~
1036 9908 266 MOY tS I ] tB,: 1. C:' 2~9; ~ **~* C~nv~rt~r --- ~ t!r~p r l h~nk 3n ~ *~
1039 S6 269 CON'~'_TQ_DPOP PUSH Sl 103~q E84E00 270 CP~LL CQNY `'.1 BIT ~L
103D 2204 271 ~Nt ~L . t:~ I 1 -103F 7413 272 - OZ Hll?OKQ
1041 3~262807 273 110~ H~tlC E;'TE~
104S 80E4FE 274 ~ND aH, qFEH
1049 E~8262C0727~5 MOV t ID B~-~TEl . ~H
104C 8~262407 276 MOY ~H, tQQNY Nlll 1050 80E406 277 ~ND P~H,06H
1053 8~26260,'279 I~IOY tt F'QP NQ], ~H
1057 5E 2-'9 POP 51 105a C3 280 PET
10~9 9~262807 231 HIRQKO: MOV ~H,tlC_B';TEl 105D 3862C07 232 MOV tlD B`~TEl ,;~H
I n61 8~2:2407 283 MO') ~H. tC:QN',' ~0~
106S :3926-607 234 MOV tDPQP NQl,~H
1069 5E 2:35 POP 51 - l 338043 HEwLETT-P~CKaRD 8088 a~ -~m~ I ~r ~ SOURCE LINE
1 06a C3 286 RET
2a7 288 ;
106B S6 2as DPOP_ T0 CON'Y: PUSH SI
106C Eslcoo 2go caLL CONY SW BIT_~L
106F Z204 2g1 ~ND ~L,tS
1o71 7402 292 J2 HIROYO
1073 B001 293 noY ~L,1 1 075 s~262co7 zg4 HIROYO: ~OV ~H,tI D_eYTE~
1079 oaEo 2gs OR aH~L
I C_B~TE~,~H
10,F a~262607 2~7 ~o~ ~H, tt)~ClP_~Q~
1083 0~E0 298 OR ~H,~L
108~ 88262407 299 ~ov tC~NY ~ H
1089 sE 300 pop Sl 108~ C3 301 PET
302 ;
303 :
sB BES807 304 CONV_SW_BIT_~L: MOV sI~cQNy-sELEcT
sE t~500 . 30~ ~ov CH,0 lO9O s~oE26o7 306 MOV CL, tDROP_NO3 1094 03F1 307 ~DD SI,CX
1096 E8s5os 308 caLL DEV I CE_e I T_aL

310 :
10sa so 311 CONY_SW_FL~G: PUSH ~X

109D E8EBFF 314 c~LL CONV_SW_8IT_~L
to~o 2204 315 ~ND ~L,tSI~
5E 3l6 pop SI
~0~3 59~ 3l7 pop c~x 10~4 58 318 pop ~x oas C3 31~ RET
320 ;
321 ~ *~*~*~ ID_8YTE ---~ DPOP_NO ~ DE.ICE_NCl :~*k~**:~:~*~:~:*:~
322 ~
10~6 50 323 ID_DPOP_DEYICE: PUSH ~x 1oa7 ~l 324 PUSH CX
10~8 sa262co, 32S MOY ~H,CID_eiTE~
10ac sac4 3Z6 ~ov ~L,~H
loaE soE4o7 327 RND ~H,.-1JR1 88262607 328 MOY CDROP_NO~,~H
Bs B103 329 ~oy CL,3 ; ~4 ~3 ~2 ~1 ~Q D2 Dl G0 1087 D2cs 330 ROR ~L~cL ; ~ 4 ~ 2 ~1 ~0 10B9 2407 331 ~ND ~L~7 ; 0 Q 0 ~4 ~3 ~2 ~1 ~0 10~B ~22~ 0? 332 MOV C DEY I CE_NO~,~L
333 ;
sE Eslaoo 334 JMP ~aKE C`~T~
335 :
336 : ~**~*~* I C s~TE ---~ CC~ NCl ! e~E~ cE NO *~~ ~**
33~ ;
1ocl 50 338 IC DROP_DEYICE PUSH ~X
10C2 ~1 33o PUSH CX
10C3 8~262907 340 MOV ~H,CIC_e-itE~
10C7 8~C~ 341 ~OV aL,aH
loc9 s0E407 342 ~ND ~H~7 ~, 287 HEI~LETT-PwC~RD: 8036 ~sc~mbl~r SOUPCE LINE
tOCC 8B262407 343 MOY ~C9NY_NO~,~H
tODO ~103 ~44 MQV CL,3 : ~4 ~7:. ~2 Pl ~o D2 Dl DO
lOD2 D2C8 34S RQP ~L,CL: - - - P4 P8 ~2 ~1 ~0 lOD4 2407 346 ~ND ~L,7 : ~I Q l7 ~ f~ l f~O
lOD6 ~22~07 ~47 MOY ~DEVICE ~O~.~L
~48 ;
lOD9 B001 348 M~KE D~T~: MOV ~L,I
lODB 8~OE2407 350 ~OV CL,tCONV_NQ~
lODF D2C0 351 ROL ~L,CL
1OEl R22E07 352 MOV ~CONV_NQ_BIT~,~L
353 ;
lOE4 BOOl 3S4 MOV ~L,l lOE6 8POE2607 355 MQY CL,tC~ROP NO]
lOE~ D2C0 356 RQL ~L,CL
lOEC ~23007 3S7 MOV ~DRQP NQ ~IT~.~L
358 ;
lOEF BOQ1 3S9 MOY ~L,l 1OF1 8aOE2~07 360 MOV CL,~DEVlr:E_NQ]
1OF5 D2C0 361 ROL ~L,CL
1OF7 ~23207 . 362 MOV ~DEVICE NQ e IT~,~L
363 ;
1OF~ S9 ~64 POP CX
1OF9 5B 36S POP ~X
lOFC C3 366 RET
367 :
~68 ; *~J*~*~ * TO_DROP ~uf~r ,p 1.-4 ~ *~*~*~*~ *~*~
36~ ;
1OFD ~00607 370 TQ_DPQP_SP~CE: MQY f~L, ~CTRL_1 1100 3C28 371 C~P ~L,40 374 ;
~7~ ~*~*~* ~L W~ Suuji ~:ai ~ ~~ *~~-~ ~
376 ;
1104 3C30 377 K~7UKO: CMP ~L,30H
1106 7203 37~ IC K~ZUKQ RET
1108 3C3~ 379 CMP ~L,3~H
110~ F5 380 C~C
ItO~ C3 331 K~-UKO_PET: REt ~82 , 3 ; ~ TO_DROP ~7U~ff~r r~ ir4r~ ~*:~*:~*:~-4~:1 k:~*:~ t~.t::~
3a4 ;
110C E8EEFF 3as LQwC'~_TO_DPOP: CwLL TO_DROP_SPw5E ; Kf~r4n3r3 wr~4nnf~
11OF 721F 3~6 JC IBF QYR
3a7;
I111 aBlE020f 3as MOV BX,~ r NDE:$_RX_l~
1115 aaoc ~89 ~OV CL,~SI~
1117 FEC1 3gO INC CL
111g 8~24 3~1 LDI: MOV RH,t~l~
1tl8 8827 3g2 MOY tBX~,~H
111~ FEC3 393 INC BL
111F 46 3g4 INC SI
1120 FEC9 3gs DEC CL
1122 75FS 396 JN7 LDl 1124 FE060607 3g7 INC B~TE PTR tCTPL_I]
1 1 28 ag lEo207 398 MOV tlNDEX_R,'. I~.BX
112C Ea4705 399 C~LL IBF UNM~SK

HEldLETT-P~C~FD: 813~6 a ~mbl~r 112F C3 400 RETPN. RET
1-130 FF0B0C00 401 I8F_OJR: INC WOP8 PTF tIEF_O~ER FLOW~

403 ;
404 , ~**~ TO_CCC Buff~r ~r~ tori~a u *~ *~ *~*~~
40S ~
113S ~OQE07 406 LO~t` FPOM_DROP: MOV ~L,tCTRL_23 1138 3C01 ~ 407 CMP ~L,I
113~ 72F3 408 JC RETRN
113C 3B1E0C0. 4Qg MOV BX,tINDEX TX 2 1140 8aQF 410 MOV CL,C8XI
1142 FECI 411 I1~C CL
1144 a~27 4î2 LD2: MOV ~H,tBX~
1146 8824 413 MOY tSI~.~H

114~ 4G 415 INC SI

114F FEOEOE07 418 DEC BYTE PTF tCTFL_2~ -11S3 891E0C07 419 MOY tI~DEX T-~ 2~,EX

423 : ***~** DROP M~P Sct ~~**~**~****~ ~***:*'.t:*:~ ::k:~*::~
424 ;
1159 BE000a 425 DROP M~P_SET- MOY SI,DPOP CMt~ BF
11SC C6040S - 426 MO; BYTE PTP tSI~,5 IISF C6440107 427 MOY BYTE PTR tSI~
1163 C6440210 428 YOY BYTE PTP tSII,~.10H
1167 C6440332 42g MOY BYTE.PTR tSI~3~32H
116B C6440454 430 MOY B`TE PTP tSI+4]/~4H
116F C6440SF0 431 MOY BYTE PTP tSIIS~lQF0H
1173 E896FF 432 C~LL LO~D TO DROP

4~4 ;
435 , ~~*~**~**~ Power Det~ct Command ~****~******~ *-~
436 ;
1177 BE000~ 432 POi~lER_DET_CMD: MOY SI,DFOP CMC~ tBF
117~ C60401 438 ~OY BYTE PTR tSI].1 117D C6440101 - 439 MOY BYTE PTR tSI~
1181 E88aFF 440 C~LL LO~D TO DPOP
11~4 C3 441 RET
442 ;
443 ; *~*~***~*** Subçcrib~r Power QFF Control *~:r**:*:~*::*:~*~*::
444 ;
1185 BE000a 445 CONY_P_0FF CMD: MOV SI,DPOP CMD BF
1188 C60402 446 MOV BYTE PTP tSI~,2 118B C6440105 447 MOV BYTE FTF! tSIl1~,5 118F ~02407 448 MOV ~L,tCONY NO~
1192 2407 449 ~ND ~L,7 1194 884402 450 MOY BYTE PTR tSI~ L
1197 E872FF 451 C~LL LO~D_TO_DPOP
119~ ~02E07 4S3 M9V ~L,tC9N~ NO BTT]
1190 343F 4S4 XOP ~L,3FH
119F 20068007 45S ~ND tNOW EYENT~,~L

~- 1 338043 HEl!lLETT-~Cr~ D ~I~86 ~e3~ bl~r SOUPCE LINE
457 ;
458 ; ~**~****~ Su~scriber Po~er ON Control :~*-~*:~:k~:~:k**:~'.:~:~*:~*:~
4~9 ;
1 1a4 BE0008 460 CON. P ON_CMD: MOV SI,GROP_CMD BF
11~7 C60402 461 MOV 8YTE PTR tSI~,2 C644010S 462 rtov BYTE PTR tSIIl~,S
llPE ~03D07 4~3 nov ~L,tTUNER_CBL3 1181 834402 464 nov BYTE PTR tSI~2~,~L
ltB4 E9SSFf 465 C~LL LO~D_TO_DROP
llB7 C3 466 RET
4~7 ~ -468 ***********~ Select Subccrlber C~lo *~*~*~*-~**~*~***~
46g :
1 1 e9 C3 470 C~BLE SEL CMt`: RET
lleg BE0008 471 MOY SI,DROP CrtD BF
llBC C60402 4F~2 PtOV BYTE PTR ~SI],~
llBF C6440106 473 MOV BYTE PTR tSI11~,6 llC3 ~09D07 4.4 MOV ~L,tTUNER_CEL]
11C6 247F 475 ~ND ~L,7FH
llC8 884402 4,6 MOV B`tTE PTR tSI t2~,~L
llCB E83EFF 477 C~LL LO~D_TO tROP
llCE C3 4r8 RET
4~g :
480 : ********~*~* Tuner Fr~quency Change Requ~st :~**:~*~#*~:~*:~*:~**'t*
4~1 11CF BE0008 482 TUNER FREQ_C11D: MOV SI,DROP_CMD_BF
11D2 C60404 483 nov BYTE PTR tSI~,4 11DS C6440103 484 MOV BYTE PTR tSI11~,3 IID9 ~t02407 435 MOV ~L,tCONV_NO~
llDC 884402 436 MOV BYTE PTR tSI12~,~L
ltDF ~08B07 487 ~tOV ~L,tTUNER_Dl~
ItE2 B84403 438 MOV B`tTE PTR tSI~3~,~L
11~5 ~08C07 48g MOV ~L,tTIJNER_D2~
IIE8 884404 4~0 MOV BYTE PTR tSI14l,~L
11t-B E81EFF 4gl C~LL LO~D_TO_DROP
tlEE C3 4~2 RET
4g3 ;
4g4 : -~ ****~*~ Convert~r ~c Uclck ISU Proclr~m **~*~***~**.-~
4g5 .
4g6 :
11EF 50 4~r RUN CON.ERTER: PUSH ~X
1lF0 53 4g8 PUSH BX
11F1 56 4~ PUSH SI
500 ;
llF2 ~02C07 50~ r~tov ~L!tID_EfTE~
11F5 50 502 PUSH ~X
503 :
ilF6 E8~F00 504 C~LL GO_CONYERTER-505 :
11F9 BE8003 506 r1OV SI,JUnP ~GGRESS
llFC B700 S07 ~tOV 8H,0 11FE 8~1E2607 508 nov BL,~DROP_NO~
1202 80C310 S0g ~DD BL,IOH
1205 9~F3 S10 nov DH,BL ; GH = Pir_t ID_BfTE
1207 02DB Sll ~DD BL,eL
120g 03DE 512 ~DD BX,SI ; B~ - First SPU JUr1F_~C!rPESS
120B B202 5~3 t10V DL,~ : DL ~ First SPU No.

' ` ~' 290 1 338043 HEI~LETT-FACKRRD: 8086 Rsc~m~l~r SOIJ~SE LINE
120D E88AFE 514 CRLL CONV S~_FLAG
t210 7520 515 JNZ CONV1_~'1E1d_l,K
5~6 1 1212 88362C07 518 CON'.'0 YIEW CK: ~OV CIQ B'tTE~,DH
1216 88162R07 S19 ~OV CDEVICE NO~!DL
121R E87DFE 520 CALL CON'~'_S~_FLAC
121D 7503 S21 JNZ CONY0_NEXT
522 ~
121F E84000 523 CALL CONV_SIJB

1222 83C310 525 CONY0_NEXT: RDD BX,tOH ; JU~P_AQDRESS
1725 80C608 526 RDD DH.8 : IC7_BS'TE
1228 FEC2 527 INC DL ; CONV_NO
122A 80FaO6 528 C~P DL.6 122D 7SE3 S29 JNZ caNv O_'.J IEI~_CK
122F Eg1D00 530 J~P CON'~_OF_ENC
531 ;
1232 88362C07 53c CON'v'1_VlEId_CK: ~O~ ClD_e')'TE~,DH
1236 88162R07 S33 ~OV CDE~ICE NO~,DL
12~A E85DFE 534 CRLL CONV_S~)_FLAG
173D 7403 535 J- CONY1_NEXT
536 ;
123F E82000 S37 C~LL CONY_S~JB
5~8 ;
1242 83C310 539.CONV1 NEXT: ADD BX.10H ; JU~P ADDRESS
1245 80C608 S40 RQD DH,8 ; ID_8~'TE
1248 FEC2 541 INC DL : CON'v'_NO
124R 80FR06 542 C~F DL,6 124D 75E3 S43 JNZ CON~1_VlEld_CK
544 , 124F 58, S45 CONV_OP_END: POP RX
1250 R22C07 546 ~OV ClD_BtTE~.AL

12S6 ao800, S48 ~O'~ 4L,CNOI_E'.'ENT
1759 243F S4g bND RL~3FH
125B A28107 550 ~0'~ tBEFOF: E'.'ENT~.bL

12SE 5E S52 POP Sl 1~61 C3 S55 RET
556 ;
1262 ~BOF 557 CON'.' SUg: ~OV C~,tBX~
1264 3BOE1C07 558 C~P CX,tlNlT_POlNT~
1268 743D 559 JZ RKE~I

562 ;
126C 8A26801)7 S63 ~O~ AH,CNOI.. I_E'~.JENT~
1270 F6C4C0 S64 TEST RH.0COH
1273 7S0E S6S JNZ bYb0 1275 32268107 566 XOR AH.CBEFOR E'v'ENTI
127~ 84262E0. S6, TEST RH.CCON'.' NO BIT~
127D 741D 568 J' MODE_SArE
127F 8A268007 569 ~OV AH,tNOl~_EVENT~
1283 F6C480 570 RYR0: TEST RH,80H

HE~LETT-P~CK~RD: ao86 ~sC~m~l~r SOUFCE LINE
1286 7411 571 JZ AY~3 1288 F6C440 5,2 TEST ~H.40H
128B 7406 5,3 JZ aYA2 12aD E8B801 ~,4 A`t~l: CPLL EYENT_LED_NR~
1290 E9qq00 S75 J~P ~ODE_5~l1E
~,6 1 12~3 E8Dg01 577 ~Y~-: CALL EVENT_LED_FLH
12q6 E90300 578 J~P ~ODE_S~ME
5~
1,99 EB8701 S80 ~Y~3: C~LL EVENT_LED_OFF

129C 3BOE1A07 5g2 ~ODE_S~E: I:~P CX,tB~SE_POINT~

12A2 E80602 584 CALL SPU_LED_DI;P
12A5 5A 585 AKIr~: POF DX

587 , 12A7 C3 S88 ~KEMI: RET
S8~ ; -12~8 8A3E8507 590 BO CONVEPTER: ~OV BH,C~S8 LED]
12AC 8~1E8407 S91 ~OV BL,tLS8_LED~
1.DO E8EB03 58 C~LL DECEIN_BX
593 : ~ # EVENT Pro~r~m T~iou *#~**#
12B3 8E0009 594 ~OV SI,EVENT_NO_FREQ
12B6 A08007 59S MOV ~L,CNO~ EVENT~
12~9 84062E07 Sq6 TEST AL,tCONV_NO_BIT~
12~D 7S03 597 JNZ CONY_EVE~IT
12BF BE0002 598 ~OV SI,CH_NO_FREQ
12C2 03F3 S89 CONV_EVENT: ~DD SIjBX
600 ;
12C4 8~00 601 ~OV ~L,tSI~C8~J
12C6 A28B07 602 MOV CTIJNER Dl].~L
12C9 8A6001 603 ~OV ~H,CSI~tBX~1~
12CC 88268C07 604 ~OV tTUNER_t~ H

12D2 8OE440 606 ~HD ~H,4OH
12DS 80CC80 607 OR AH~80H
12D8 OA~62407 608 OR ~H,tCONV NO~
12DC 88268DO, 609 MOV tTUNER CBL~,~H
12E0 E8C1FE 610 C~LL CONV P ON k~C
t2E3 E8D2FE 611 B~LL C~BLE_8EL_C~D
12E6 E8E6FE 612 C~LL TUNEP FREQ C~D

614 , 615 ;
616 ;
12EA BE8003 617 STP_CONVERTER: ~OV SI,JUMP_~DDRESS
12ED B700 618 ~OV BH,0 12EF 8~1E2607 619 ~OY BL,tDPOP NO~
17f3 80C310 620 ~DD BL,1OH
12F6 8AF3 621 ~OV DH,BL ; DH - First ID_E-~TE
12F8 02DB 622 ~DD BL,BL
12FA 03DE 623 ~DD BX,SI : BX = FIr,t SP~J JU~P ~CDFE5:-12FC B202 6 4 ~OV DL,~ : DL s Fir-~t SPU No.
12FE E899FD 6 5 CALL CONV SW FL~C
1301 7525 6~6 JNZ CONV1 STP_C~
6~ :

HEl,lLETT-P~CK~Rb: Btl:36 ~ ~mbI~r BOUPCE LINE
' ,628 ;
1303 88362C07 628 CONY0_STP_CK MOV CID B'-TE],C~H
1307 88162a07 630 MO'~' tDEYICE_~O~.DL
130B E8aCft' 631 C~LL CONY ,1.1 FL~B
130E 7508 632 JN' STPC0 NEXT
1310 8BOElC07 633 MOY CX,CINIT POINT~
1314 390F 634 CMP CEX~.CX
1316 7S34 635 JN2 CONY YIEld 'tET
1318 83C310 636 STPC0_NEYT: ~GD BX.1OH : JlJMp-~GGFEsr 131B 80C608 637 ~GG C'H,S : It` B','TE
131E FEC2 638 INC t`L ION~ NO
1320 80FR06 638 CMP C~L,6 1323 7SGE 640 IN2 CONY0 ETP C~.
1325 E82200 641 JMP CqNY YIE~I ETP
642 , 1328 88362C07 643 CONV1_ETF_CK: MOv CIG ~YTE~.C~H
132C 88162P07 644 MO~: tDEYIl:E_NO~.GL
1330 E867FD 64S C~LL CON'Y' SW FL~G --1335 8BOElC07 647 MOV CX'!tINIT_PqINT3 13~, 390F 648 C~P CBX~CX
133B 7S0F 64g JN2 CONV_VIEl~_YET
13:;D 83C310 650 STPC1_NE'm'T: ~GD BX,10H : JUMP_~GQ~ESS
1340 80C608 651 ~GD C~H.8 : I8_BYTE
1343 FEC2 652 INC GL : CONV_NO
134S 80F~06 653 CMP DL,6 1348 7SDE 6S4 JNZ CONYl_STP_CK
6SS ;
134~ F8 6S6 CONY_VIE~_STP: CLC

6S8 ;
134C F9~ 6S9 CON'Y'_',IEld_~ET: STC

66~ ;
662-: ~*~******~** Gev-co MGP ~t ~t'**~**~**~****************t.t***t~
663 ;
134E ~02407 664 GEV,CE_M~P_SET: ~OV ~L,tCONV NO~
13S1 8E0008 66S MOV SI.BFOP l:MB BF
13~4 C60407 666 MOV B'tTE FTR tSI~.7 13S7 C6440108 667 ~OV B'tTE FTR CSI+1~,8 13SB 884402 668 MOY 8'tTE PTR CSI+c~.~L ; Drop No. = }: ~L
135E C6440332 66~ MOY B'tTE FTR CSI~3~,32H
1362 C6440454 670 MOV B'tTE PTR tSI+4~,54H
1366 C6440SFF 671 ~OV B'tTE PTR tSI+5~,0FFH
136~ C64406FF 672 MOV B-tTE PTP C5I+6~.nFFH
136E C64407F0 673 MOV B-tTE PTR CSI+7~,0F0H
13~2 E897FD 674 C~LL LO~B_TO BROP

676 ;
677 , ************ Spl~ St~t~Js P~-J~t Commlr.~ Cn~t_ ~*~***~ 4*~ ~ 4*- 4 678 , 1376 BE1008 678 ~PU_ST~TIJS REQ: MOY 8I~EPlJ_l:MC'_F:F
1378 C60404 680 ~OV B'tTE FTR [5I~.4 : B-ngth 137C C6440104 681 MOY B'tTE FTF CS1~1~.4 : C~no~ CQmm~r.
1380 ~02C07 682 MOV GL,tIG E 'tTE~
1383 884402 683 MOY BYTE FTR tEI+~L . IG B;'TE
1386 C6440301 684 ~OV B'tTE FTF CSIl3~ E~Jt~ C~ nt~

HEldLETT-pacK~RG: ~086 ~s~em~l~r SOURCE LINE
13Ba ~02~07 635 MOV ~L,tDEYICE_NO]
t38D 884404 6a6 ttOV 8YTE PTR tSI~4],aL ; Statu~ Req. C~mmand 1390 E879FD 68~ C~LL LOaD_TO DROP

~89 ;
6g0 : ***-~****~*** Cle3r Device GispIay Command *~******
691 ;
1394 BE1008 6g2 SP~J_CLE~R_DISP MOV SI,SPU_CMD_RF
1397 C60404 6g3 nov BYTE PTR tSI~,4 : Lengeh 13g~ C6440104 6g4 t~tOV BYTE PTR CSI+t],4 : Prop Comm:nc1 139E r~o2co7 695 nov aL,CID BYTE]
13a1 884402 6~6 nov B`rTE PTR csI+2~aL : ID_B~TE
t3~4 C6440301 697 noY BYTE PTP tSI13],~ B~t.e Count13a9 ~ozao7 698 ~tOV aL,tDEVICE_NQI
13~B OC30 6g9 OR r~L,30H
13aD 884404 700 nov BYTE PTR CSI~4].r~L : Cl~ar Di~p. CQmm3r,d 13~0 E8SgFD 701 caLL LQaD_TQ_DROP

703 ;
704 *****~**~** Rel3y Control ON Commanct ~****~**~~*~
705 :
1384 RE1008 .06 SPU_REL~Y_QN: nov SI,SPU_CMD_BF
1387 C60405 07 nov 8YTE PTR CSI],5 : Length 13Ba C6440104 70~ rtoV BYTE PTR CSI~1],4 ; Drop Command 13BE ~02C07 709 MOV aL,tlD RYTE~
t3C1 884402 710 MOV BYTE PTR tSI'2~,aL ; ID B`fTE
13C4 C6440302 711 rtov BYTE PTR tSI13~,2 ; s~,~ee CQunt 13C8 ao2P07 7t MOY aL,CDE~ICE NO~
13CB OC28 7'3 OR ~L,2-~H
13CD 884404 Jl4 ~tOY BiTE PTR tSI~4~,~L : Rela~ CQnt. C~mm3nd 13n0 BOFF ?15 nov ~L, OFFH
13D2 884405 716 ~tOV BYTE PTR CSI~5~.aL , ON
13DS E834FD 717 C~LL LO~D_TO DROP
13D8 C3 .18 P~ET
719 :
720 ; **~**-~*~** ReI~y ContrQl QFF C~mmand *~*::r.~ *:~*-~*::~ ***:k:~:,21 :
13Dg BE100a 722 SPU REL~`~_OFF: MOV SI,SPU crtD BF
13DC C60405 ~3 nov BYTE PTR CSI~,5 : Len~t~
130F C6440104 .24 ~tOV B`tTE PTR CCI~1~,4 DrQp 5Qmm~r,d 13E3 ao2C07 72S MOV aL,CID_BYTE]
13E6 884402 ,26 rtov BYTE PTR tSI12~,aL : ID_B`~TE
13~9 C6440302 727 ~tOV BYTE PTR tSI13],2 , ~/te Court 13ED ao2ao .28 noY aL, tDEVICE_NOl 13F0 0C2~t 72g OR ~tL,28H
13F2 8a4404 730 nov BYTE PTR tSI~4],~L : Rel3~ CQnt. Comm~r,i t3~5 B000 .31 ~O~.aL,0 13F7 894405 732 ~O~ BYTE PTR tSI~5].aL : OFF
13F~ E9OFFD 733 CaLL LOaD TO DROP

735 :
736 : ~*******~** Event LED ON Cr.~mm3nd **:*:~:.**:~:t:**:~*~***~::r***
737 ;
13FE BE1008 738 EVE~T_LED_ON: noY SI,SPU C~D BF
1401 C60405 ~39 no~ BYTE PTR CSI],5 : Lenath 1404 C6440104 740 ~OV BYTE PTR CaIl1].4 : Drop CQmman~
1408 ao2co7 741 ~OV aL,tID_BYTE~

HEWLETT-PRCKRRB: 8086 Rs3~mbl~r SOURCE LINE
140B 884402 742 rto'~ BYTE FT~ t8I~2~.~L : IC~_8YTE
140E C6440302 743 rtov 8'rTE RTR tSI+3~ 8~!t~ C.3unt 14t2 ao2ao/ .44 . rtOV RL,tDEVlCE_NO~
1415 0C08 74S OR aL,8 1417 884404 ,46 rto~ 8rTE PTR CSI~1~.RL : E-/~rt LEC~ C~rt. 04n,m.. r-i 41R BOFF ,47 hOV aL.OFFH
141C 884405 748 hO~' 8YTE PTR CSI~SJtRL ; ON
141F E8EaFC 749 CRLL LoaD TO_C'ROP

7S1 , 7S2 : *#~****~#*** E~ent LED OFF Comm.3n~t ***-~****`~**~*******~***~***
753 ;
1423 8E1008 7S4 EVENT_LEQ_OFF: h0Y 51,8PU CrtC~ BF
1426 C6040S 5'3 rtov eYTE PTR CS}~5 : Len.~th 1429 C6440104 /56 rtov BYTE PTR CS1+1~4 : Crop Comm3n~t 142D ao2co7 757 rtov aL,tlQ_B'~'TE~
t430 884402 ,58 t~tOV 8YTE FTF CS1~2~.RL : ID_B'~'TE
1433 C6440302 75g rtov B'tTE PTR CSI~}~.~ : 8~te rount 1437 ao2~07 60 t~tOV RL,Ct`E'~'lCE_N0 143a 0C08 61 OR RL.8 143C 08S404 762 rtov 8YTE PTR tS1l4~,RL : E~ent LEC~ 0.~r.t. C4mm3r,.
143F tB000 .63 h0Y QL,0 1441 884405 ~64 hOV 8YTE PTR CSIIS~,RL ~ OFF
1444 E8CSFC 76S CRLL LORB_TO_DROP

67 ;
768 ; **~********* E ~nt LED Normal Comm3nd ***************~***~**~
~69 t 14~8 E883FF 70 EYENT_LEB_NRM: CaLL EVENT_LED_O~I
144B BE1008 771 MOV 51.8PU_ChQ_BF
144E C6040S 77~ ~0V B-tTE PTR tSl~,S : Len~th 1451 C6440104 773 hOV B'tTE PTR tSIIl~,4 : t~rop Cqmm3nd 1455 ~0~C07 774 hOV aLJtlD_8'tTE~ -14S8~884402 . 775 t~OY BYTE PTR t81~2~,RL ~ ID_BYTE
145B C6440302 776 h0V 8YTE RTR tSII3~,~ ; 8~te Count 14SF ao~ao7 777 t10V RL,tDE'.'lCE_NO~
1S62 0C10 778 OR aL,10H
1464 884404 779 ~O~ BYTE PTR t81~4~.~L : E./~nt LEt~ ~c~ C-~mm3n-i 1467 Cb440S00 780 t10V BYTE PTR tSI~5~,0 : Norm1l 146B E8gEFC 781 CaLL LORQ_TO_C'R0P

783 t 784 ; *~*~***~**** E ent LEB Fl.-h Command *********************~-***
785 :
146F E88CFF 786 EVENT_LE~_FLH: r~aLL EVENT_LEt~_0N
1472 BE1008 787 t10~ Sl.SPIJ Ct1t' 6F
1475 C6040S ~88 hOV 8YTE PTR ~.51~,5 : L~ngth 1478 C6440104 789 tOV B'tTE PTR tS1~1J.4 : ~r-3p Cqmm.3r-i 1S7C R02C07 7g0 ~OV aL,tlC~_B'I'TE~
147F 884402 7gl t0V BYTE PTR tSIIc~.RL : IC~_6'tTE
1482 C6440302 ,g2 hOV BYTE PTR [51+3~,c : B~te C~Unt 1486 ~02R07 ,93 t~0V aL,tC~EVlC:E_\JOJ
148~ 0C10 7g4 OR aL~lOH
148B 884404 ~95 ~O~' 8'tTE PTR ~SI~43.RL . E~nt LEC~ ~,3.~ O:.~mm.3n.i 148E C64405FF ,96 ~O~' 8YTE PTR tSl~S~,0FFH : Fl.z-,h 1492 E8,7FC ,g7 CRLL L0PC~_T0_t)ROP
14g5 C3 ,~8 RET

i 338043 HEldLETr-P~C~RD: a 036 ~c~.cmblcr SOIJk5l:E LINE
7g9 ;
800 ; **~*****~* SPU View Channcl Operation ~**~*******~ ***:~.t*
801 ;
1496 BE1000 302 SPU_VlEl~_PI'5P: MOV Sl,VIEW_CH~NHEL
1499 B700 303 MOV BH,0 149B 3~1E2407 304 MO't BL,CCQNV_NQ~
149F 8~20 805 MQV ~H,C513tB.'~
14~1 8~4008 306 MOY ~L,C'I]CRX~8 14Q4 88268S07 307 SPU LEC~ ~X: MQV C~5B LEC~ H
14h8 a2B407 803 MOV CL5B_LEG~,~L
909 ;
310 ; ~**~***~**** SPU LED.:h EVENT LED Oper~tion ::*:**:~*~*:~:*k:k*:k*:~
3~1 , 14~B 8E1008 812 5PU LED DICP: MOV SI,SPU_SMG BF
14~E C60406 313 rQV B~TE PTR C51~,6 ; Len~th 14B1 C6440104 314 MO't B`fTE PTR5~ CS1~1~,4 ; Drop Sc~mr~rd 14B5 ~02C07 315 MQV ~L,CID_BYTE~
14B8 884402 376 MOV BYTE PTR CS1~2~,~L ; C~c~ic~DrQp 14BB C6440303 817 ~oV BYTE PTR ~SI+3~,3 ; Bytc Count 14BF ~02~07 318 MOV ~L,CDE't}CE NO~
14C2 OC50 81g OR aL,S0H
t4C4 884404 320 MOV BYTE PTR CSI+4~,~L ; Di~pl3y Ch3r3rt~r C-~mm.3n 14C7 C6440500 ~21 ~OV 8YTE PTR CS}+5~,0 ; LsB
14C8 ~0B407 ~22 MOV ~L,CLSB_LED~
14CE 884406 823 MOV BYTE PTR tSI+6~,~L ; b3ta 14D1 E838FC 324 C~LL LOaD_TQ_DRQP
. 825 ;
14~4 BE100~ 526 MOV Sl,SPU CMD BF
14D7 C6440501 827 MOV BYTE PTR CS}IS~,1 ; MSe 14D8 ~oa507 328 MOV ~L,CM5B LEC/~
14DE 894406 829 MOV BYTE PTR CSl+6~,~L , G3ta 14~1 E823FC 330 C~LL LO~D_TQ DRQP

832 :
833 ; ****~****-- 5PU LEG æ EYENT_LED Oper5tion :k:**:*:***:~:*~:~ *::*-~:
a34 ;
14ES BE1008 835 5PII_LEG_GISFL: MQV 5I,8PU CMG_BF
14E8 C60406 836 MQV BYTE PTR CSI~,6 : L~noth 14EB C6440104 337 MQV BYTE PTR CSI+1~.4 : Drop Comm5r.d 14EF ~02C07 a38 MOV ~L,~ID BYTE~
14F2 ~84402 839 MOV BYTE PTR CSI+2~,~L : G~iceHDr-cp 14F5 C6440303 340 MOV BYTE PTR C'51l3~,3 : e~!t- Co~Jr.t 14F9 ~02ao7 841 MOV aL,~BE'~ICE_NO~
14FC 0C50 842 OR aL,50H
14FE 834404 343 MOV BYTE PTR CCIl4~,~L : rlispl3:! C~ 5c~-~5r C.-.n.m.5sn tS41 c64405ao 844 MOV B`~TE PTR5. C3I+5~,80H ; LSE Fl=s=h lS05 ~OB407 345 MOV ~L,CL3e LED~
150a ~84406 846 MO'~ BYTE PTR tSI16~,~L : r~3r,3 150B E3FEFB 847 C~LL LOaD_To_DRQP
848 ;
1SOE BE100B 349 MOV SI,SPU CMD BF
1511 C6440501 350 ~QV 8YTE PTR CSIIS~,1 ; MSLs 1515 ~0~S07 3S1 MOV ~L,~MSB LED~
151a a84406 352 MOV BYTE PTR C3I~6~,aL : r~3t~
151B EaEEFB 353 CaLL LO~D_TO_DROP
151E C3 ~S4 RET
~55 ;

`'- I 338043 HEwLETT-pacKaRD: 8086 ass~mbl~r SOURCE LINE
856 ; *~###***~*** SPU LED ~ E.E~T_LED Op~r3ti-~n *****************4*
85~ ;
1S1F 8E1008 858 SPU_LED_FL~SH: MOV Sl,SPU_C~rJ_8F
1522 C60406 8S9 ~OV BYTE PTR CSI~,6 : L~ngt~h 1525 C6440104 8S0 ~oV BYTE PTR t51~ : Drqp Cqmm3n.J
1S29 R02C07 8$1 hOV aL,tID_6YTE]
1S2C 884402 862 ~OV BYTE PTR tS1~2~,~L : D~vic~,Drop 152F C6440303 863 YOV 8YTE PTF tSI+33,3 Evt~ Count 1S33 a02R07 ~64 hOV aL,tDEVlCE NO~
1536 0CS0 86S OR aL,50H
1S38 884404 866 ~OV 8YTE RTR tSI14~,aL Displ 3y Char 3C~ er C-~mm 3n.
lS38 C6440580 867 ~O~ 8YTE PTR tSr~S~80H : LSB Fl3sh 153F R08407 868 hOV aL,tLSB LED~
1542 884406 869 ~OV 8YTE PTR tSI~6~,~L : D-3t3 lS4S E8C4FB 870 CaLL LORrJ TO_DROP
871 ;
1S48 8E1008 872 hOV Sl.. SPU C~D BF
1S4B C6i40581 873 hOV BYTE PTR tSI~$3.81H ~ SE Fli_h IS4F R08507 874 ~OV ~L,t~SB_LErJ~ ~
ISS2 884406 875 hOV BYTE PTR tS116~L ; CJ3t3 1SSS E884FB 876 C~LL LO~D TO DROP

~78 J
879 ; ~t~tttt~t*~ SPU LED & EVENT_LErJ N~w Op~ration ****~**********
880 :
1559 8E1008 881 SPU_LED_FLRST: ~OV SI,SPU C~D BF
155C C60406 882 ~OV BYTE PTR tSI~,6 - ; Length 155F C6440104 883 - hOV BYTE PTR tS1~13,4 ; Drop Command IS63 R02C07 884 hOV RL,tID_BYTE~
1566 884402 88S ~OV BYTE PTR tSll~.RL ; D~vic~,Drop 1568 C6440303 886 ~ûV BYTE PTR tS1~3~,3 ; Byte Count 1S6~ R02R07 887 ~OV RL,tDEVlCE_~O~
IS70 0C50 888 OR RL,50H
1S72 884404 a89 ~OV BYTE PTR CS1~4~,aL ; Displ3y Chir3ct.er C~mn,3r,~

8~1 ~
1575 C6440583 $92 ~OV BYTE PTR tS115~.83H : USB Flash 1579 C6440$30 8g3 hOV BYTE PTR tS1l5~,30H ; D3t-3 157D E8~CFB 894 CaLL LOaD TO DROP
895 _ _ 1S8q BE1008 896 hOV SI,SPU C~D BF
1S83 C6440S82 887 hOV BYTE PTR tSI~5~,82H ; HSB Pl3_h 15a7 a08607 89a hOV RL,tHSE_LEC~
lSrR 884406 899 h4V BYTE PTR tSI~S~,aL ; D3t.3 158Q E87CFB 900 cqLL LOaD_TO DFQP
901;
1590 BE1008 902 hOV SI,SPIJ_CMD BF
1593 C6440S80 903 ~OV BYTE PTR tS1~5~80H ; LSB Fla~h IS87 R08407 ~04 hOV aL,CLSB_LED~ . -158a 884406 80S ~OV BYTE PTR tS1~6~,aL ; D3t315~D E86CFB 806 CaLL LOaD_TO DFOP
907 ;
1SaO BE1008 908 hOV Sl,SPU C~D BF
15~3 C6440581 809 hO BYTE PTR tSI~S~81H ; ~SB Fl~3h lSà7 ~oa507 ~10 ~OV aL,t~SB_LEC~
15RR 884406 911 ~O~ 8YTE PTR tSI~6~,RL : D~t.3 15~D E85CF8 ~12 CaLL LOaD_TO_DROP

. _ . .

~ 1 338043 HEI~LETT-PPC ~:QPG: 8086 Q~çemt~ler SQIJF~CE LINE
1S8l3 C3 g13 RET
~14 ~ **~##******* Quthori ~S S~r~t~iruk~i ---, C~' **~*#*********~*
ISB1 E8SFon g1S QUTHO_K~I: CQLL CONV_BIT_QL : ~L = 2 ** C5N'.'_NC
15B4 8B1E1Es7 a16 ~ov Bx,wORD FTR tBIH~FY LED~
1588 BE9001 gl7 MOV SI!s~SIC_QUTHq 158B 22qo g18 aND ~L.CSl~EX~ ; ' = 0 --- No sBtl C3 919 RET
920 : ******~*~*** IF PC Cod~=0 Th~n '=1 ELSE ~=0 ***********
1S8E S3 g21 PC CCIDE_0_K~I: FUSH BX
1S8F 56 g22 PUSH St 15cn BE2noo 923 hOV SI,PC CODE
1SC3 8700 g24 ~Ov 8h,0 1SC5 8Q1E2407 92S ~Ov 8L,tCONY_Nû~
1SC9 nzDB 926 QDD 8LJBL
15CB 8B10 927 Ml.3V DX,tSI~tBX~
1SCO 83FA00 92~ . CMP DX,0 1SD0 SE 929 PoP S I

1SD2 C3 g31 RET
g32 ; *********~** IF SC Mod~ Tht~n Z81 ELSE ,=" *****.~:*r***
lsD3 Es3Doo 933 SC_YODE_KQI: CQLL CONY BIT ~L
1St~6 22060E00 934 QNO ~L,tSCQN_~ClOE_ FL~C~
sDQ C3 935 RET
936 , 15DB BE2000 937 PC_CCIGE_~DRS: ~Ov SI~PC_I`OGE
1SDE B700 938 MOY BH,0 15En 8Q1E24n7 939 MOV BL,tCON~_NO~
15E4 02D8 - 940 ~OD 8L~ BL
15E6 C3 g4 1 RET
942 ~ ************ PC.~FC L1st ~ Quthoriz~ CY= 1 --- None ~********
1SE7 50 943 PCFC_MQP_~RUK~: PUSH ~X
1SE8 E82800 g44 CQLL CONV_6IT_QL : ~L - 2 ** CI~NY_~Iq 15EB 8Eono1 g45 hOV SI,PC FC LIST
1sEE s1nn g46 ~qv CL,o 1sFo saEo 94, QKQNE: MOV ~H,QL - = o --- No 1SF2 2224 948 QND QH,tSI~ -1SF4 22P4snno g49 QND QH~tS I ~128 1sF8 7soe 9S0 JN~ AKQNE CH~N
15FQ 46 ssl INC SI
1SFB FEC1 gS2 INC CL
1SFD 80F964 953 CMP CL.1 ,3n 1600 7sEE ss4 JNZ hKQNE
.1602 58 9S5 POP QX

160S S8 g58 QK~NE CH~N: PoP QX
1606 F8 g59 CLC

96~ ~ **~****~**** Drop No. Bi~ Eosition ---> RL **********r~*~**
1608 S1 962 DROP BIT QL: PUSH Cx 1609 8QnE26n7 963 ~ ~ ~n~ CL,tt~OF ~O~
160D 80n1 g64 hOV QL~1 160F D2C0 96S ROL QL~C~
1611 59 g66 POP Cx .

968 : ***~******** Con~ertt~r Eit PO ition ---`~ ~L ****************
1613 S1 969 CON;_B IT ~L: PUSH Cx ~-- 298 ~ 338043 HE~LETT-P~CK~RD: 3086 ~ss~mbl~r SOURCE LIHE
1614 8~OEZ407 970 ~OV CL,CCOHV NO]
1618 B001 971 MOV ~L,l 16t~ D2C0 972 ROL ~L,CL
161C Sg 973 POP CX
161D C3 9.4 RET
97S ; :***~*'~*#**-~ Dcvice Bit Position ---? ~L ~*~:~**~:~:-~:***:t:
161E Sl 976 tlEVICE BIT_~L: PUSH CX
161F 8~0E2~07 977 MOV CL,CDEVICE_NO~
1O23 5001 978 MOV ~L,1 1625 D2C0 979 ROL ~L,CL
1627 Sg g80 POP CX
162B C3 ~a1 RET
982 ; **~#***~#~#~ EVENT Mode ---~ R~s~r Wod~ *~****~*******~**~
162q ~02E07 983 EVENT_TQ B~SIC: WOV ~L,CCONV NO BIT~
t62C 34~F 984 XOR ~L,3FH
1-62E 20068007 985 ~ND CNO~ EVENTI,~L

987 ; #****#*##~* Tin~r Set Op~ration ***-~***~*****~*~****-~*~
1633 B90200 988 TIMER_Q2_5EC: MOV CX,2 1636 E92B00 989 Jnp TIWER_SET CX
163g B90400 9g0 TIWER_04_5EC: WOV CX,4 163C E92500 ~91 JMP TIWER_SET_CX
163F B90500 9g2 TIMER_05_SEC: WOV CX,S
1642 E91F00 9g3 JWP TIMEP~_SET_CX
1645 g0 - ~94 TIWER UD SEC: NOP
1646 B90~00 995 T:IMER_l_SEC: MOV CX,10 1649 E91800 gg6 JMP TIWER_SET_CX
164C B91400 997 TIMER_2_5EC: ~OV CX,20 16~F E91200 998 JWP TI~ER_SET_CX
1652 B93200 9g~ TIMER_5 SEC: WOY CX,50 1655 E9OC00 1000 JWP TIWER_SET_CX
1658 B96400 1001 TIMER 10 SEC: MOV CX,100 16SB E90600 1002 JWP TI~ER_SET_CX
165E B92C01 1003 TIWER_30_5EC: WOV CX,300 .1661 E90000 1004 JWP TIWER SET CX
1664 53 1005 TIWER_SET_CX: PUSH BX

166O BE0003 1007 MOV SI,TIWE_T~eLE
166~ B700 1008 MOV BH,0 166B 8hlE2807 1009 WOV 8L,tIC_B`fTEJ
166F 02DB 1010 ~DD BL,RL
1671 8908 1011 MOV tSI3CBX~,CX

16~4 5B 1013 POP BX

1015 :
1016 ; *#*#~##~*# IBF Interrupt Unmask ****~**~*****~*~*-~*~
1017 :
1676 R81200 1018 IBF_UNW~SKI WOV ~X,12H
167q B~3~FF 1019 WOV DX,nFF~BH ; leF Int~rru~t Unm3--k 167C EF 1020 OUT DX,~X

1022 ;
1023 : ********#~*# Chann~liTa~l~ --- LEG *~ ***~*~*~*
1024 :
167E BE1000 1025 VIEW_TBL_LED: ~Q~ SI,VIEW_CH~NEL ; tIG BrTEI
1681 B700 1026 ~OV BH,O

``-- 299 - 1~ 33B~
HEldLETT-Pf~CK~RD: 8086 ~ssemb I er SOURCE L I NE
1683 8~q 1 E~40710 '7 MO~ 8L, t Cl3NY_N13]
t 687 8R20 1028 llO~ ~4H . CSI ~ C8X~
1689 8~q4008 102 I~IOV ~L; t S I ~ t BX ~ 8 168C 88~685l37i 030 r1l3~ CMSB_LED3,~H
16gO ~28407 1 n31 1~1OV tLSB LED~ L
t 6g3 8BQ8 1032 ro~r~ sx, 16gS C3 1033 RET
1034:
' 03~ : #*$~#~###*~ LED --- B.~ *#~*~*#****'*****'~****~:*~****~***
1 036:
1696 8~3E8S071037 LED BIN BX: I~IOY BH . tMSB LED3 : BX C--- LED
169a 8a1 E84q7 1038 I~IOY BL, tLSB LED~
1039, 1040; ~*~****~#~ Gecim~l t~ E~n3ry ##~##-~:*****t.**~ *~ *.~:.***

169E 80E30F 1042 DECBIN_E;~ ND BL,OFH ; BX f~SCII Decim-31 ~ 6:- Bin 16~11 80E70F 1043 f~ND BH, OFH
16~4 02FF 1044 ~DD BH, BH
16~6 02DF 104S qDD BL,BH , BL-BLlt2~BH
16~q8 02FF 1046 ~DD BH, BH : BH-~t 2*6H16~ 02FF 1017 BDD BH,BH : BH52#t2#t2#BH~
16aC 02DF 1048 ~DD BL, BH : BL~BL~t c#E3H ~c*~ c*( -- *BH!!
16~E t1700 1 049 llOY BH,0 : ~BL~ 10#BH
16B0 891E1E07 1050 MOV WORD FTR tBlN~RI LED~,BX
16e4 C3 1 OS1 RET

1053; #~tt~t~tt~LED ~ YIEW_T~BLE ~ #~###*****'*#********~
10~4 -168!5 BE1 noo 105S LED_~IEI~l TBL: t10~r Sl,YlEId CHf~NNEL
t688 B700 1 0S6 î10Y BH. O
168~ 81~1E2407 1057 110Y BL, tCONY NO~
16BE 8~268S07 1 OSB MOV ~H, tMSB LED~ , 16C2 8820 10S9 ~IOY tS13tBX~H ; L4st Ch4nn~ m~r~: Ni Ir-l~u 16C4 ~08407 1 060 I~IO~' aL, tL58 LEtr~
16C7 884008 1061 I~IOY tSI 3 tBX I 8~, ~L
16Ca C3 1062 RET

1064; *##**###**#~ IF KEtIN THEI~I COTO Bf~SE ROUTINE *'~ ~****#~:***
106~5 :
16C8 ~OB907 1066 IF KE~ C0 BasE: MOV ~L,tKE'~ DBT~
16CE 3C00 1067 CMP ~L,TIMER OUT CODE

16D2 5~ 1069 POP DX
16D3 E93D01 1070 JMP BPSE P~OUTINE
16D6 C3 1071 TIMER 0N: RET
107~ ~
1073 : #**#~ ### SC~N Mo~e Up Ch4nnel S~rch **~*****~*****~.t*t*~*
1074 :
16D7 E8~$FF 107S DW_SC~N_SE~RCH: C~LL VIEW TBL LED
16~ E8B9FF 1076 C~LL LED BIN BX
16DO E833FF 1077 C~LL CONV BIT ~L
16Ed BE8001 1078 MOV SI,B~SiC ~UTHO
16E3 FECB 1079 URI: DEC BL
16E5 8OFB00 1080 ~MP BL,0 16E~ BB6300 1082 hOV BX,99 16ED 8~E0 1083 UR11: ~OV ~H,~L

`~- 300 1 338043 : HEI.ILETT-P~CK~RD: soa6 ~s~embler SUUR8E LI~E
16EF 2220 1084 aNc aH~
16P1 74F0 1 08S J~ URI
16f3 E~6200 1086 JMP UD_CON~_DISF
~087 ;
1088 ; ~*~*****~*~ PCFC ~ode Up Ch3nnel S~rsh *************~****~*~
108~ ;
16F6 E88SFF 10B0 DW PCFC SE~RCH: caLL VIEW TBL LED
16Fs Es9~FF 1091 caLL LED_BIN_BX
16FC Es14FF 1 092 caLL CONV BIT-aL
16FF BE0001 1093 MOV Sl,PC FC LIST
17 02 FEcs 1094 UKI: DEC BL
1,04 soFBoo losS CMP BL,0 1707 ,S03 1096 JNZ UKt1 0a BB~300 1097 MOV 8X,99 1~0C saEo 1098 UKI1: MOV aH~aL
170E 2220 10~9 aND 4H,CSIJCBX3 1710 z2~08000 1100 ~ND ~H~tsI+1~8~cs 1,14 74EC 1101 JZ UKI
1716 E~3F00 1102 JMP UD CONV DISP
1103 ;
1104 ; ~#~ *~ PCFC Mo~e up Ch~nnel S~rsh ****~****~*~ *~**
1 1 O~S;
1719 E862FF 1106 UP_PCFC_SE~RCH: caLL VIEW_TBL_LED
171C E877FF 1107 C~LL LED_BIN_BX
171F E8FlFE 1108 caLL CONV 8IT aL
1722 BE0001 1109 ~Ov SI,PC_FC_LI~T
172S FEC3 1110 urI: INC BL
1727 80FB64 1111 CMP BL,100 ~72~ 7203 1112 JC U~l1 172C BB0100 1113 MOV BX,1 172F 8aE0 1114 unIl: MOV ~H,aL
1731 2220 111S PND ~H~ tSI~tBX~
1733 Z2R08000 11 16 ~ND ~H, csI~12s3tB

1739 E9lC00 1118 J~P UD CONV DISP
1119 ;
1120 ; *~*~ scaN Mode Up Ch.3nnel Se~r~h ~**~**********~**~*Y*
1121 ;
173C EB FFF 1122 UP_SC~N_SE~RCH: caLL vlEw-TeL-LED
1,3F E~S4FF 1123 caLL LED-eIN-Bx 17~2 EsCEFE 1124 caLL CONV BIT aL
1~45 BE8001 1 125 MOV SI, BaS I c-auTHo 1748 FEC3 1126 UKa: INC BL
1~4a 80FB64 1127 CMP BL~1nn 1.4D 7203 1 128 JC UKa1 174F 8BI~1OO 1129 MOV BX,1 17S2 8~E0 1130 UK~1: MO~ ~H,qL
17S4 2220 1131 ~NQ ~H,tSI~tBX~
17S6 74F0 1132 JZ uKa 1133 ;
17ss E8CEFE 1134 UD_CONV_DISP: C~LL EVENT TO BaSIC
1,SB E80a00 113S caLL BINQE~ LEQ
17sE E854FF 1136 caLL LED ~IEW TBL
1761 Es4~FD 113~ oaLL SPU_LEQ_QISF
1764 E841FB 1138 caLL l,O_CON`/EP~TER

1140 ;

~, 301 1 338043 - HEucrTr-ppcr~pD ~0~6 a~ -r S Ouvs E L I NE
1768 8roo ll-l 81HDEC LED HOV 8H,0 17~ F~0~1 I I 2 H l Tqr l- cl r r~. ~ o 176D 77--7 11--3 JC I~CIKO
17fF 8 EBoa 11-- SU8 BL, ~ O
17 2 FrC7 ~ 1--5 IIIC 8H
17~- E F4 I l -6 Jllr HITOIII
17'6 8 C83030 11--7 r8 60 OP 8X,3030H
17 a 81E8--07 I I-P IIOv ILS8_LED~ BL
17~E ~3E8507 1~- lOv Ins8 LED~,BH
17--2 C8 ~0 FET
,C, FC, vC ~a~ xo dX ~i 5--t Suru ~.~--17113 E--DrE 11 I ~CFrPC hODE dX! S~LL 5C llODE rPI
~7--~ 7--~4 ~ J S-lOFl_FCPi 17--3 8--~3'3 11~ hDt ax ~SC I I SC I 5Ci N 11Od~ J
17~ C3 1 I S FET
Il ~:
17~C EB2FFE 11 ~ s~opl - Fcrcl caLL ~C--CQDE--0--ra 17~1F 7504 Il--- JNZ sroPl - pc 7~ 3~ OV aX, ~SC I I F5 I FC N~
17~-- C3 I 1~ PET
11~ ':
17~5 8~-350 Il- s~orl rc r~ov dX,d~CII C I PC l~od~
17~-- C3 ~1--. RET
11~5 I I ~.--Il~
.--1 1~ -11~-1 Il~
.
I I ~ ~ __ __ _ ~, ;.
v OD--r t i ~r I I '1~
I I _ ~ _ _ _ _ _ _ _ _ _ _ _ _ _ 17g- 8dOI -907 I l-C rEY OPE~ TIDH I~OV CL, CKE~ DdT Il ~n ~7n "' ~ l~r V H,0 d~r2807 Il--- IWV BL,IIC 8YTEl I ~a- ~ I IB dDD BL 8L
03 11~ ~V Sl Juhr ~DDPESS
0 118~ I nv ~X, ~ 51 ~ ~x ~
l ~ qof lc~ ~ SHr ~x~ I IHIT porNT~ H~gil~ u~ ON, nFF K.. ,. ih~ tul ~ c l ~E ' I l-- JZ op INlTldL
17--0 ~ OF--13 I l ~ i c ~Ir CL,0NOFF t E Y_C0DE
1783 50~ 118-- JNZ or NOFh4L rEi I r5 ES7--01 11--1 JIIP 0p - sp~ - oFT 5PU Yo OFF Sur~Jn8-n--Il~' I
1 88 50 I l or NOF17~L_KEY PUSH dX ; 011:0FF I ~ Iq~ ~ oD~r~t ior l B' C3 I l~ VET
li,C J To5HIIIo^OS-Tn5H 11l0--0 -T05HII10-OS-TO5HI~ O--05-T05HIH0--0S-T l5Hll o-Ds-rosHlHo--05-TqSHlNO--0S-TqSH I
178d 58 I l I EXT _COIIT I HUE I rOr ~x ` ~ . 302 1 338043 - HEldLETT-P~CK~RD: 8086 ~ nbIcr ~OURCE L I NE
17BB 8700 11~8 NEXT Q5: ~o~ BH,0 17BD sAlE2so7 1l99 YQW BL, tIC_8YTE~
17C1 02DB I 2 O O ADD sL~eL
I 7C3 BE8003 1201 MqV 5 I, JuMp-~DDpEss 17C6 8~00 IZ02 MO~ CB~ tSI~.~Y
17C8 C3 1203 RETURN_OS: RET
1204 ~ - -- -_---_________ ______ 120~ ;
1206 SPU Initi 31 Of- Mo~c 1208 ;
17cs 8~0E8so7 1209 OP_INITI~L: MOV CL,tKEY_t!~TA~ , 17CD 80F913 1210 CMP CL,ONOFF KEi_C-OCE ; SPU OFF
17D0 S11 1211 JNZ MP_100_CK_001 ; t~
17D2 EsS4FE lZ12 CALL EVENT_TO_B~SIC : SPU ON
1 D5 EsBEFC 1213 C~LL SPU_~IE~ DISF

17D9 E8CDF~ 1215 CALL GO_CON~ERTER

1 DB E8D6FB 1217 WAKE~RI_DE_ON: C~LL SPU_RELR~_ON ; !

17DE allAo7 1219 MOV AX,CBASE POINT~

t221 :
1222 ~t * ,t ~ 1- 1- t t ~ t t ~ t ~ ~ t ~ ~ ~ ,~i ~ ~ J. ~ ~ ~ ~ ~ .~. .~ ~ .~ .1. .1~ .1. .~. * ,~- * ~
1~23 : :;
17E3 80F911 1224 MP_1 00_CK_001: crP CL,EVENT_KEY_CODE :;
17E6 7S24 122S JN2 MP_l 00_CK_002 17E8 B430 1226 MOV ~H,30H ::
17EA E8aDFs 1227 C~LL CONV_SW_FL~G
17ED 7402 1228 JZ CONV_S~ OK_YO
17EF B431 '229 coN~-sw-NG-yo: MOY ~H, lH :;
17F1 ~02A07 1230 CON~_S~_QK_YO: MOV AL,CDE~ICE NO3 17F4 0C30 1231 OR ~L,30H ::
17F6 a8268507 1232 MOV tMSg_LED~,AH ::
17FA Q2s4o7 1233 MO~ CLSB_LED~,~L ::
17FD ~02407 1234 MOV AL,CCONV_NO~ ::
aoo 0C30 1235 OR AL,30H ;;
1802 FECO 1236 INC AL :;
laO4 A28607 1237 MO~ CHSB_LED~,AL :;
1807 E84FFD 1238 CALL SPU_LECi_FL~ST ;;
soA EBBC 1239 JMP RETURN_QS ;;
180C 80Fgl7 1240 MP_l 00_CK_0r2: CMP CL,SEND_KEi_COQE ;;
aoF 7587 1241 JN2 RETURN_OS
1242 ::: :::;;; C~LL SPECIAL sPu-l ::
EBB5 1243 JMP RETURN_QS
1244 :
124~ :
1246 : t~a5c Routin~
1247 :
1248 : --- --- -------- -- -- ----al3 A08907 1249 tASE ROUTINE: MO'~ AL,tKEY_Cj~T~
1816 EsEBFy 12S0 CALL KA2UKQ
1819 7384 12Sl JNC RANDnn_~ccEss 1918 3C10 1252 CMP AL,PLUS_~E~_COQE
slD 7so3 12~3 JNZ BASEI
slF Es24ol 12S4 J~P UP_CHANNEL_QP

~ 1 338043 HEULETT-P~CK~RC: 80a6 asse~b SOU~CE L I NE
1822 3C11 1 55 B~SEt: C~P ~L EvENT_KE~t_CODE
1824 7S03 1256 JNZ BasE2 1826 E94703 18S7 JMP E~ENT_KEY oP
1829 3C12 1258 e~sE2 C~P aL~auTHO_KEY_coDE
1828 7S03 1259 . JNZ BaSE3 ls2D E9ga01 1260 JMP auTHo-KEy-op 1830 3C14 1261 B~sE3: CMP AL ~INlJS_KEY_COtE
~832 7~03 1262 J~lZ 8aSE4 1834 Esa7ol 1263 Jnp DOI~N_CH_OP
1837 3ClS 1:~64 8~SE4: CMP RL scaN-KEy-coDE
1839 7s03 126S JNZ BaSEs 1838 E 1S02 1266 JMP SCAN_KEY_OP
1s3E 3C16 1267 B~sEs C~P AL CLEaR_KEY_CODE
1840 7~03 1268 JNZ BasE6 1842 Eq9C02 1~69 J~P CLEaR_KE~t oP
s4s 3C17 1270 B~SES: CMP aL,SEND_KE't_CODE
~847 7S03 127~ JNZ BaSE7 1849 E9a802 1272 J~P SEND_KEY OP
184C E98400 1~73 BASE7: JMP NEXT_END : Zooooooooooooooooooooooooooooooooo~o~-oo~:
127 4 ; ------ -- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 127~ ;
1276 ~ndom Ac~ Rout in~
1277 ;
~27 8 ; -- ------ ---- ---- ---- -- -- -- -- -- -- -- -- -- -- -- -- --184F B700 1279 R~NDOM_aCCESS: ~OV BH.0 18S1 sAlE2so7 1280 nov BL CIC_B'tTE3 18S~ sBF3 1281 nov Sl BX
18S7 E86406 - 1-2a2 C~LL KE~t_BUFF_ACRS
~s~a 8800 12~3 ~Ov tBX~tSl~.aL
1284 ;
185C A28S07 1285 MO~ tMsB-LED]~aL
ls5F Boss 1286 nov aL 88H ; LSB =
1861 ~28407 1287 MO~ tLsB-LED3~aL
1864 E87EFC 1288 CALL SPU_LED_DI~FL
18~7 E8E8FD 1289 caLL T I MER S_SEC
12~0 ;
186a E84DFF 1291 CALL NE.XT_l`ONTINUE ; ttt k~y Input W3it ]]3 1292 ;
1s~D aosgo7 1293 ~o~ aL~tKEy D~T~
1870 Es9lFs 1294 caLL KazuKo 1873 264 12ss JC R~NDOM OUT
1B7S B700 1296 ~O~ BH o 1~77 ~a1E2a07 1297 ~O~ BL tIC_BYTE~ ;
187B 8BF3 1298 ~O~ S I, BX
18 D Es3Eo6 1299 caLL KE~t_BUFF_aDRS ; ~H = t 13t, KEY 3 ~-30 ~3a20 1300 ~o~ aH~sI~B~ L ~ E~ D~T~
1301 ;
1~32 a2s407 1302 nov tLss-LED] ~L ; LED Dl5pl;-;
1995 ss26sso 1303 no~ t~S8_LED3 ~H
1889 Es32o6 1304 caLL KE~t BuFF-aDRs Isac 894004 130S ~ov cs I~ tBx~43 ~X
1a8F E81gFC. 1306 CALL SPU_LED_DISP

1892 EsolFE 1308 caLL LED BIN BX
1895 Es1sFD 1309 CALL ~UTHO_KAI
1898 47D 1310 J- WT_NO_WT_END
- 131~;

~E~LETT-P~CKbPD 8086 b~bl~r SOUPCE LINE
IB~a E836FD 1312 caLL SC-~oDE-Kb lB9D 7528 1313 JNZ TUNE SURU
IB-F E81CFD 131~ CbLL PC_CQDE_0_K~S
t8a2 7~26 1315 Jz TUNE SuRU
1316 ;
18a~ E8EFFD 1317 caLL LED B2N_BX, : Pe nod~ D~q~ PC-~o Ni b~uk~
~7 E869FD 1318 caLL CQ~v BIT bL
lBaa 8E0001 1319 ~ov SI,PC FC LIST
1saD 2200 1320 aND RL,tSI~tBX~
IBaF 7519 132t JNZ TUNE SURU
~322 :
1881 E8730S 1323 CPLL ~NCQ INPUT
18e4 E82E06 1324 C~LL aNco QIN DX
18B7 EB21FD 1325 caLL PC_CnDE bPRS
18sa 3810 ~3Z6 cnP DX,~SI~tBX~ ;
188C 7524 1327 JNZ ~SCERR UT END ; IF PC CQDE <> Input Co~ Ther, PC_Control ssE E8FDCS 1328 caLL KEY BUFF ~DRS : -~C~ 88400~ ~3Z~ nov aX,tSl~tB~4~ :
18C~ a38~07 1330 nov tLstt-LED~ax Isc7 EBEIFs 1331 caLL SPU LED DISP
'332 8ca EB5CFD 1333 TUNE_SURU: C~LL EVENT TQ 8bSlC
~33~ ; _ _ 18CD E8ESFD 133S caLL LED v2E~ TBL
'336 18D0 E81CF9 1337 CaLL RuN_ço~vERTEr ~338 :
18D3 a11ao7 1339 NEXT EHD: nov ax~BbsE PQIHT~
8D8 E9E2FE 1340 Jnp NExT os ~34~ ; _ 18D9 3C16 1342 RaNDOr_OUT: C~P aL~cLE~R KEy-coDE
IBD8 7S~5 1343 JNZ nSCERR VT END
IBDD E8B6FB 1 344 CaLL 5PU V I Ew DISP
18E0 EBFl 134S J~P NEXT_END
:
~8E2 8872~5 ~347 nSCEQR_wT_END: ~OV ax~ascll EP
aEs E8BCFB 1348 rSC_UT_END: caLL SPU LED bX
E8 E85sFD 1349 ~IT_ENr caLL TlnER I SEC
So ; ~ ~
~8E~ E~CCFE 135~ IF_TlnEQUT_END: CaLL NExT CONTINUE
~S2 :
~aEE ao~o7 ~3S3 nov aL~t~Ey t~Ta~
18F1 3C00 135- CHP aL,TI~ER OUT _CQDE
18F3 7403 13SS JZ RaNDOn IIODOR I
FS E918FF 1356 JnP BaSE ROUT I NE
~357 18f8 ~08007 1358 RaNDOn_nODOPI: ~Ov aL~thov EvEHT~ ;
F8 84062E07 ~359 TEST aL~tcoNv NO BIT~ :
18FF 505 1360 JNZ EVENT n0DQRI
1901 Es92Fs 1361 caLL SPU UIEU DISP
190- EBCD 1362 J~P NEXT END
1906 8E3000 1363 EVENT nQDORI: ~Ov SI,E ENT CXbNNEL
0336240 136~ aDD SI,tCO~v NOJ
~9Ot~ 881C 136S ~Ov 8X,tSIJ
190F Ess6FE 1366 caLL 81NDEC_LED
1912 E8~6Fs l3O7 caLL SPU LED DISP
l91S E8sC 1368 JHP NExT_END

HE~LETT-FacK~RD: S0~6 ~s~blcr S~UFCE LINE
1 36q 13 0 ;
1917 E82CFD 1 371 WT_NO_~T_END CaLL TlhER_ I _SEC
1372 ;
E89DFE 1373 caLL NExT_CONT I NUE
~37~ ;
~9~D ao8907 ~37S ~ov aL~cKE~-DaTa~
192Q 3C00 1376 c~P aL~TJhER-ouT-coDE
1 2Z 7-03 13~7 JZ nsc-No-uT-E~D
1924 E9ECFE 13 8 JYP 8aSE_ROUTlNE
1927 88DCD4 1379 hSC_NO_UT_E~D: hOV ax,~scll_No : I S.c. ~No~
~2a EB8s 1380 J~P hSG_UT_EWD
8~
~382 138~ ;
1385 ; ------- _______________ 1386 :
1387 ; SPU OFF K~y Op~r~tion ~388 ;
3a9 ;-- _____________ 192C E8~aF~ 1390 OP_SPU_OFF: CRLL spu-RELay-oFF
1~2F E~6ZFa ~3 1 caLL spu-cLEaR-D~sp 1932 E8EEFa 1392 caLL EVENT_LED_QFF
~393 ~
193S a1lco~ 1394 xOV ax~tlNlT P01NT~ -1938 E880FE '395 caLL NEXT 0S : Kor~w- T~nn~ru Junbid~ri ~d~ OS niw~moaor~ne 1938 E8aCF9 1396 CaLL STP_C0NVERTER
193E ?203 1397 JC XaKI
~3~8 :
19-0 E8~2F8 1399 caLL CONV_P_OFF_C~D
~ ~400 1943 E982FE 1401 naKl: J~P RETUFN OS : hodoru Junbiw~ Shit~runod~ R~turn ~o2 ~40~
1~05 6 : -------_- ___________________ ___ ~407 :
1408 : UP Ch~nn~l Ch~n~
1~09:
14t0 ;--- -- -------------------1946 E8CaFC 1411 up-cHaNNEL-op caLL coNv-8lT-aL
194 22Q60E00 1412 ~ND aL~;c~-hoDE-FL~
194D 7~33 1413 JZ UP PCFC
1--14:
19~F E8E~FD 1415 uP-5caN C~LL UP_SC~N_SE~RCN
1952 E8E~FC 1-16 C~LL TI~ER_05_SEC
~7:
t95S E862FE 1418 caLL NEXT_CQNTINUE
~4~9 1958 ao8907 1420 nov aL~KE~ D~T~
195B 3CQQ 1421 C~P aL,TlhEP QUT_CODE
SD 755Q 1422 JNZ UP DOV~ EXIT UxD Suau H-n-eh t-~
1423 :
Ig5F ESI 4F~ 1424 TU~O: CRLL SPU_ST~TU5_PEO
1962 E8EQFC 1425 CaLL TlhEP_UD_SEC

HEI~LEtT-P~CK~RD: 80.6 ~cs~nbl~r ~OURCE LINE
142~ :
t96S E852FE 1427 C~LL NEXT_CQNTINUE
1428 ;
lg69 ao8so7 1429 MOV ~L,tKE'f D~T~
t96B 3CIC 1430 CMP ~L,KEY PUSH CODE
lq,6D 7S48 1431 JNE UP DOWN EXIT : K~-) Rcl~aco or ~no~hor ~c-"
Iq,6f E8C~FD 1432 C~LL UP SC~N SE~RCH
1972 E8BEFC 1433 C~LL TIMER_02_5EC
1434 :
197S E842FE 1435 C~LL NEXT_CONTINUE
1436 ;
1978 ~08907 1437 MO~ ~L,tKE'r' D~T~
197B 3C00 1438 CnP ~L,TIMER_OUT_COGE
197D 74E0 1439 J7. YUKO
197F E93500 1440 JMP UP_DOWN_EXIT ~noth~r K~"
144.1 1442 ; ~***~*~*** PC-FC Mod~ ~*'~******~**~*~'~*****~**~ .k*:~
1982 E862FC 1443 UP_PCFC: C~LL PCFC_M~P_~RU~ -1985 7240 1444 JC UP_NO_M~P
144~ ;
1987 E88FFD 1446 C~LL UP PCFC SE~RCH
l9P,~ E8B2FC 1447 C~LL TIMR_OS_SEC
1448 ;
198D E82~FE t449 C~LL NEXT_CONTINUE
t4SO ;
1990 ~08907 14S1 ~OV ~L,tKEY_D~T~
1993 3C00 14S2 C~P ~L,TIMER OUT CODE
199S 7520 1453 JNZ UP_DOW~_EXIT
1454 ;
1997 E8DCF9 1455 Y~SUKO: C~LL SPU ST~TUS REQ
t99~ E8~8FC 1456 C~LL TIMER_UG_SEC
~ 1457 ;
l99D E81~FE 1458 C~LL NEXT_CO~ITINUE
1459 :
1~0 ~08907 1460 ~OV ~L,tKEY D~T~
1,q~3 3ClC 1461 CMP PL,KEY_PUSH CODE
l9a5 7510 1462 JNZ UP DQWN EXIT
19~7 E86FFD 1463 C~LL UP PCFC SE~RCH.
l,q~ E886FC 1464 CPLL TIMER_02_5EC
1465 ;
lg~D E80~FE 1466 C~LL NEXT_CONTINUE
1467 ;
1960 ~08907 1468 MOV ~L,tKEY D~T~
l9B3 3C00 1469 CMP ~L,TIMER OUT CODE
lgBS 74E0 1470 JZ Y~SUKO
1471 ;
1472 ;
1987 ~03qO7 1473 UP_DO~N_EXIT: MOV ~L,tKEY D~T~
196~ 3C00 1474 CMP ~L,TIMEP OUT CODE
l9BC 7S06 1475 JN2 MIK~
19eE E9D5F~ 1476 C~LL SPU VIEW DISP
l9Cl E828F8 1477 C~LL RUN_CONVERTER
19C4 E94CFE 1478 MIK~: JMP B~SE ROUTINE
14~
l9C7 E9SDFF 1480 UP_NO M~P: JMP MSG_NO_~T_END

14~2 ;
.

HEWLETT-P~5K~RG: 8086 Q~s~bl~r 1 3 3 8 0 4 3 1483 :
'484 : ~dding Channel~ t-~ th~ FC,PC Li3t 1485 ;
14q~ - ----_______________________________________ 19~ E8BIFC 1497 ~UTHO_KEY_OP: C~LL VIEW_T8L_LED
IgCD E8C6FC 1488 C~LL LED BIN BX
19D0 BE0001 14a9 ~OV SI,PC FC LIST
19D3 E83DFC 1490 C~LL CONW BIT ~L
19D6 0800 1491 OR tS13tBX~,~L
19D8 B86441 1492 ~OV ~X,~SCII_~D
19D8 E9Q7FF 1493 J~P ~SG_~T_END
14~4 ; - --------__-__________________________ ____ 1495 ;
1496 Do~n ChanneL Ch~n~e 1497 :
1498 :
19DE E832FC 1499 DOWN_CH_OP: C~LL CONV_BIT_~L
1 ff 1 22060E00 1500 ~ND ~L,tSC~N_~OGE_FL~G3 19ES 7432 1S01 JZ D~ PCFC
1502 ~
19E7 E8EDFC 1503 DW_SC~N: C~LL DU_SC~N_SE~RCW
1g~ E852FC 1504 C~LL TI~ER_05_SEC
1505 :
19ED E8C~FD (506 C~LL NEXT_CONTINUE
1S07 :
19E0 ~08907 1508 ~OV aL,tKEY D~T~3 l9F3 3C00 1509 CMP ~L,TI~ER_OUT_CODE
19F5 7S20 1510 JNZ DOWN_EXIT
1511 :
19F7 E87CF9 1512 EIKO: C~LL SPU ST~TUS_REQ
19r~ E848FC 1513 C~LL TIMER UG SEC
1514 _ _ lgFD.EaB~FD 151S C~LL NEXT_CONTINUE
1516 :
1~00 ~08907 1517 ~OV ~L,tKEY D~T~
1~03 3CIC 1S18 C~P ~L,KEY PUSH CODE
1~0S 7510 1519 JNZ DOWN_EXIT
1~07 E8CDFC 1520 C~LL DW_SC~N SE~PCH
1~0~ E82~FC 1S21 C~LL TI~ER 0. SEC
1S22 :
1~0D E8~FD 1523 C~LL NEXT_CONTINUE
1524 :
1~10 ~0890, 1S25 MOV ~L,tKEY b~T~
1~13 3C00 1S26 CMP ~L,TI~ER qUT 50GE
1~1S 74E0 1527 JZ EIKO
1~1 EB9E 1528 DOWN_EXIT: JMP UP_DOWN_EXIT
1529 ) ~ PC-FC ~o~ **~**~*~****~~*~~~*~-1~i9 E3C8FB 1S30 DW_PCFC: C~LL PCFC ~F ~RUK~
1~1C 7232 1S31 JC GW_NO_~P
1532 :
1P1E E8DSFC 1533 CALL DW_PCFC_SE~RCH
1~21 E818FC 1534 C~LL TI~ER_05_5EC
153S :
1~24 E893FD 1536 C~LL NEXT_CONTINUE
153~ ;
1~27 hO8907 1S38 MOv ~L,tKEY D~T~
1~2~ 3COO lS39 CMP ~L,TIMER_aUT_CODE

~ .

HEuLETT-PaCKRRD: 8086 ass~nbt~r - SOURCE LSNE
lR2C 7.SE9 1S~0 JNZ DOHH_EXS T
lS~1 J
lR2E E8~sFs 15~2 KEIK0- CaLL SPU_STATUS_REQ
lR31 E811FC 1S~3 CRCL TI~ER_UD_SEC
J
lR3~ E883FD 1S~S CRLL NEXT_CONTSNUE
IS~6 a37 Ro8so7 1S~7 HOV RL,CKEY DaTA~
1a3R 3ClC lS~8 cnP RL,KEY_PUSH_CODE
R3C 7SDs lS~9 Jh2 DOWN_EXIT
1~3E E88SFC 1SS0 C~LL Du_PCFC_SEARCH
R~l E8EFF8 ISSl cqLL TShER_02_5EC
1S~2 ;
1R4~ E873FD ISS3 caLL NEXT_CONTSNUE
1~S4:
lR~7 R08907 1SSS ~0~ RL,~KEY_DATA~ .
lR~R 3C00 lSS6 crP RL~TI~ER-ouT-coQE
R~C 74E0 lSS7 JZ KEIKO
lR~E E8C7 1SS8 JnF DOUN_EXIT
1 ~9 1RS0 E9D~FE 1S60 W _NO ~AP: Jrp HSG_NO_UT_END
1S6~

s63 ~564 S~

1S67 : ---------1S68 ;
1S69 ; SCAH K~y Op~r-tion 1S70 ;
, 1S71 -_________________________ 1RS3 E82DFD 1S72 SCAN_KEY_OP: CRLL SCFCPC_h0DE RX
1RS6 E84BFR 1S73 CRLL SPU_LED_AX
asg E8F6FB 1S7~ CALL TI~ER_S_SEC
1S75 ~
1RSC E85BFD 1S76 ~ALL ~EXT_CONT~UE
1S-7 :
1~5F Ro8so7 1S78 ~0- ~L,tKEY_DATR~
lR62 3C00 1579 C~P RL,TI~ER_0UT_COt`E
lA~ 7S03 lS80 JNZ SC~H_AFTE7 lQ66 E9sFFE lS81 JhP RANDO~_~ODOR
lS82 :
lR69 3C1S -lS83 SCaN_AFTER: ChF ~L,SCAN_KEY_CODE
1a68 .s3s 1S84 JNZ SCAH_~NOTHER
1S8S : ~ ~
1a6D E84EFB lS86 scAN-scaN CRLL PC_C0DE_0_K~I
1A70 7~10 1S87 JZ SC_FC_PC_XrHC
~S88 :
1Q72 E88203 1S89 CRLL RNGo_INPUT
1a7s E86D0~ 1S9o CRLL aNGo-Bl~-Dx 1R78 E860FB IS9l C~LL Pc-cgDE-ADRs lR?B 3B10 1S92 ChP rx~sI~Bx~
1~7D ~03 1S93 JZ SC_FC_PC_xcHG , IF PC_CODE ~ Input Co~ Th~n PC E~~~r 1 ~59~ ;
1a7F E960FE 1S9S J~P HSGERR_uT_EHD
1~96 ;

, . . .
- HE~LETT-PPCK~D 80B6 R~en~ler SQURCE LINE
IR82 E88EFB 1~97 SC_FC PC_xC~G CRLL CONV Bl T RL
1~8~ 30060E00 1598 xOR cscaN nODE FLaC~,aL
lRos 22060E00 t599 ahD ~L,tSCRN_~ODE_FLaG~
IR8D 7406 1600 JZ E~l_TO_FCPC
IRsF Bs~3S3 I:Ol Enl-To-scaN ~ov RX,RSCII_SC
1~92 E950FE 1602 Jnp ~SG_WT_END
dss E8Z6FB 1603 E~l TO_FCPC: CRLL PC_CODE_0_KR
tR98 7506 1604 JNZ Enl_To_Pc 1R~R Be43~6 160S E~l TQ FC: nov Rx~ascIl-Fc asD Es45FE ~606 Jnp nSC_WT ENG
laRo 8e~3so 1607 E~I_TO_Pc ~ov RX,RSCII_PC
lRa3 Es3FFE 1608 Jnp ~SG_~T_ENG
~09 ~610 1611 ;
lRR6 3C12 1612 SC~l_dNOTHER cnP RL,R8THO KEy COGE
aR8 7403 1613 J2 PC CODE XCHG
IRaa Es66FD 161~ Jnp BRSE_P~OUTINE

1616 IF PC_CODE - 0 THEN ~NEW~ ELSE dNSHO-KEY-lN
1617 ~
t~RD E80EFB 1618 PC CODE_XCHG CRLL pc-coDE-o-KaI
lRBO 7~0D 1619 J. NEU_PC_CODE
t620 ;
laB2 E87203 1~21 CdLL aNCO_INPUT
1~85 E82D04 1622 caLL aNGO_BIN_DX
tRes E82OF8 1623 CRLL PC_CODE_qDRS
IRB8 3B10 162~ cnP Dx,CSI~tBX~
~eD 751F 1625 JNZ PC_CODE_ERR ; IF PC_CODE <> Input CO~- Then PC_ErrD

-t~BF EBCE02 1627 NE~ PC CODE C~LL ~NGO TOUROKU
RC2 E87~FB 1628 CRLL TI~EP_05_5EC
~629 1RC5 E8F2FC 1630 CRLL NEXT_CONTINUE
~631 ~
l~C8 E853 04 1632 C~LL RNGo-DlspLay RCB 7303 1633 JNC NEU_PC_SET
~CD E912FE 163~ J~P ~SGERR UT_END
163~
laDO Esl204 1636 NE~_PC_SET C~LL RNGO_BIN_DX
laD3 EsosFB 1637 C~LL PC CODE aDRS
- laD6 e~lo 1638 ~ov CSI~CBX~,DX

ao8 ~85~1 1640 - nov Rx~asclI au IRDB E907FE t641 J~P ~SG_WT_END
1642 ) 16~3 ;
~rE E901FE IO4~ PC_CODE_ERR J~P nSGEPP_WT_END
164~ ---------_____________________________ 16~6 16~7 Dclcting C~rnel~ ~ron thc FC,~pC List 16 9 ~
~El E99RF8 16S0 cLEaR-~Ey QF: CaLL VlEW_TBL_LEr laE~ EeaFFB 1651 caLL LED_81N_BX
taE7 BEo001 1652 nov Sl,PC FC_LIST
lRER E826F8 16S3 caLL CONY Bl T_~L

~ ~ 310 l 33~043 HEWLETT-P~CK~RD: 8086 ~s3~bl-r SOUPCE LINE
I~ED 34FF 16~4 XOR ~L,OFFH
I~EF 2000 16~S~ND csl3tex3 ~ ~L
16~6 -1~Fl B84S64 165?~OV ~X,~SCII_bE
1~F4 E9EEFD 1658JMP MSG WT END
16S~ , -----1660 ;
1661 ; S~nd K~Y Fu~t,i~n 1662 :
1663 , ---------l~F7 B84553 1664 SEND_KEY_OF: MOY ~X/PSCII_SE
l~F~ E8P7F9 166SC~LL SPU LEb_~X
1666 :
1~FD E813FB 166?C~LL CONY BIT RL
1B00 22063008 1668~ND aL~tSEND_EN~6LE3 1B04 7503 1669JNZ SEMD_KtOK~
lB06 E9OEFE 1670JMF WT_NO WT_END
1671 , IB09 E846FB 1672 SENG_K`~OK~: C~LL TIMEP_S_SEC
16~3 :
lBOC E8a8FC 1674C~LL NEXT_CONTIN~JE
1675 ;
1BOF ~08907 1676MOY RL,tKEt D~Ta3 1B1~ E8EFF5 167? C~LL K~7UKO

1817 E9BFFD 1679JMP R~NbOM OUT
1B1~ ~28407 1680 SETUKO:MOV tL~B LED3,~L
181D 8~1E3308 1681MOV BL,tSENt!_INbEX3 1B21 80FB80 1682CMF 8L,SEND M~X
lB24 7203 1683 .JC T~MIKO
lB26 E9EEFD 1684 T~MI:JMP WT_NO_4T_END
lB29 B420 1685 T~IKO:MO~ ~H.~0H
lB2B 88268507 1686MOY tMSB_LEb3.~H
lB2F E88C03 1687C~LL KEY BUFF ~bRS
IB32 ~08907 1688MO~ ~L,tKEY b~T~
lB35 8800 1689MOY tS13tBX3.~L
1B3. E8~BF9 1690C~LL SPU LEG DISFL
1B3~ E815FB 1691C~LL TIMER 5 SEC
1 6g2 1B3b E87~FC 1693C~LL NEXT_CONTINUE
1~4 ;
1B40 ~0890, 16qSMOV ~L,tKEt_b~Ta3 1B43 3C16 1696C~P ~L,CLE~R_KEY_CObE
1B45 74B0 1697 JZ SEND_KEY OP
1B47 3C12 1698CMP ~L,~UTHO_KEY_CODE
1B4g 75DB ~69q JNZ T~l 1 ~00 ;
lB4B E87003 1701C~LL KEY 6UFF ~bRS
1B4E 8~00 1702MOY ~L,tSI3tBX3 1BSO BE3S08 1703MOY SI,SENb b~T~ 6UFF
1853 B700 1704 MOY BH,0 1BSS 8~1E3308 170SMOV BL,tSENb INbEX3 1B59 8~262807 1706 MOY ~H,tlC 8YTE3 lBSb 886001 1707 MCY tSI3t8X~13,~H
1860 884002 1~08 MOY tSI3t8X~23~L
le63 80C302 l,0~ ~DD eL,2 le66 881E3308 1710 ~OY tSE~D INtlE:~3,BL

~- 311 1 3380~3 - HE~LETT-P~CKaRD: 8096 as~e~bl~r SOURCE LINE
1711 ;
r~6~ B8S541 1712 ~OV ax~ascll-au lB6D E~75FD 1713 JMP MSG_WT_END

t7 1 5 : _________________ 17t6 :
1717 : Ev~nt Key Operation 17~8 : .
17tg ----______________________________ t870 ES4BF~ 1720 EYENT_KEY_OP: C~LL PC_CODE_0_K~S
1873 7410 1721 JZ EY_PC_OK YO
1722 :
lB75 E8~F02 t723 C~LL ~NGO_INPUT : PC C~d~ Inc~u~.
tB7a E86~03 t724 C~LL ~NGO_BIN_DX
lB78 E85DF~ 1725 caLL PC_CODE_aDRS
lB7E 3B10 1726 CMP DX,CSI~CBX~
880 7403 1727 JZ EY_PC_O~_YO
lB82 EgsDFD t728 EVENT ERR: JMP YSGERR_WT_ENb t729 :
B6s 1730 EV PC_OK_YO: : Event En~bl~
lB~s B872S0 1731 MOY ~x~ascII PR
1888 E8 1 gFg 1732 C~LL SPU_LED_~X
asY E83sFa 1733 C~LL TIMER_l_sEc ~734 ~
lBsE E82sFc 173S caLL NEXT_CONT I NUE
1736 :
lB~l Ee66ol 1737 caLL yoy~Ku-sE~RcH
1894 7203 . 1738 JC Y H~JIME
1~96 E9C600 173g JMP FORCED_EvENT
1.40 :
1~99 8872S0 1741 Y H~JIME: MOV ~X,~SCII_PR
189C E8~SF~ 1742 C~LL SPU_LED_~X
BsF E8B6Fa 1743 C~LL TIMER_I O_SEC
t~44 :
lBf~2 E81sFC 1745 C~LL NEXT_CONTINUE
t746 :
18a5 ao8907 1747 ~oY aL~Ey-Df~T~
Ba8 E91100 1748 JMP EYENT_lST_KEY
174g :
lB~B E8aaF~ 1750 EvENT_KEY ~aIT: C~LL TIMER_10_5EC
17Sl :
lB~E E8osFc 1752 C~LL NEXT_CONTINUE
17S3 :
lBBI ao8so7 1754 MOV ~L,~KEY_D~T~]
lB84 3C12 1755 CMP aL,~UTHO_KEY_CODE
lBB6 742D 1756 JZ EVENT ~UTHO
lBB8 3C16 ~ 17S7 CMP ~L,CLE~R_KEY_CODE
lB6~ 7432 1 7S8 JZ EYENT CLE~P
tBBC 3C10 17S9 EYENT_IST_KEY: CMP ~L,PLUS_KEY_CODE
lBBE 7441 1760 JZ EVENT PLUS
lBro 3C14 1761 C~P aL~rtl~ws-KE~f-coDE
tBC2 7443 1762 JZ EVENT_MINIlS
tBC4 3C00 1763 C~P aL~ T I rtER_OUT_CODE
lBC6 740B 1764 JZ EvENT_T OUT
lBC8 3C1 1 176S crtP aL,EVENT_KEY_CODE
lBCa 740a 1766 JZ EvENT_EvENT
lBCC E83sF5 1767 caLL KaZUKO

~.

, ~ 312 1 338043 HEwLETT-PaCKaRb: 8086 aSS~n~Irr . SOURCE LINE
1BCF 733E 1768 JNC RaNDOM ~o~laKu 1 8D1 EBaF 1769 JMP EVENT_ERR
1770 ;
1B~3 Eg22FD 1771 EVENT_T_OUT: JMP R~NDO~ noDOR
177Z ;
1BC6 EssoFq '773 EYENT_EYENT: CRLL EYENT To-BasIc BD9 E8a2Fa 177S CaLL YlEw_T8L_LED
IBDC E810F6 177S CaLL RUN_CONYERTER
18Df E8csF8 1776 caLL SPU_LED_DISP
1BE2 E9EEFC 1777 Jrp NEXT_END
1778 ;
1BES E8B600 177,q EvENT_alJTHO: CRLL KEIYaKU : P3y Ch3nnel Shin~:i K~iy3ku lBE8 B85541 1780 MOV dx.ascll au 18EB Eso8oo 1781 JMP EYENT_MSG
1782 !
18EE E8C800 1783 EVENT_CLE~R: CaLL Kal~aKu BFl 7319 1784 JNC EVENT_NO
1BF3 B8$s64 1785 MOV ax,~sc I l_DE
1BF6 E8aBF8 1786 EVENT_MSG: CaLL SPU_LED_~X
BF9 E84RF~ 1787 CaLL TIMER_1_5ES
1788 ;
1BFC E8BBFB 1789 CRLL NEXT_CONTINUE
17g0 ;
18FF E884 1791 JMP EV_PC OK_YO
'792 ;
1C01 E80R01 1793 EYENT_FLUS: caLL UP_tOY~KU
1C04 E90300 1794 JMP EVENT_Ub 1C07 E84E01 179S EYENT_~INUS: CRLL D44N_-IOY~KU
1C0~ 7353 1796 EVENT_IJD: JNC FORCED_EvENT
lCOC E918FD 1797 EYENT NO JMP MSG_NO_UT_END
- 17~8 .:
1COF B7~0 1799 R~NDOM_tOYaKU: MOV BH.. 0 IC11 8R1E2807 1800 MOV BL.. CIC_BYTE~
1ClS 8BF3 1801 MOV SI,BX
1C17 E8a4o2 1-802 CRLL KEy-BuFF-aDRs 1C1a 8800 1803 MOV CBX~CsI~taL
1804 ;
1C1C a28so7 180S MOV CMSB LED]~aL
lClF B088 1806 MOV aL~88H I LSB = ~_ 1C~1 a~8407 1807 MOV CLSB_LED~,aL
1C24 E8F8F8 1808 caLL SPU_LED_FLasH
1C~7 E828Fa 180g CaLL TI~ER_~_SEC
1810 ;
Ic2a E88DFB 1811 CRLL NEXT CONTINUE ; tCt K~y Input l~iit ~]
1812 ;
IC7C~ R08907 1813 MOV ~L,CKE~ DaTR~

IC33 7249 - 181S JC IRG_~OYRKU
1C3S B700 1816 MOV BH, 0 1C37 8RlE2807 18t7 MOV BL,CIC_8tTE3 1C38 8BF3 1818 MOV S I ~ BX
C3D E87E02 181g CaLL KEY BUFF ~bRS : ~H = t 1 5t, KEr ]
IC40 8~20 18~0 MOV ~H,tSI~tBX] : aL = t KE~_DaTR
18~1 ;
1C42 a28407 18~2 MOY tLSB_LEG~,~L LEb bi 1C45 88268507 1823 MOY CMSB_LED~
1C4q, E87202 1824 CRLL KEY_tUFF_~DRS

~ 313 l 338043 HEl~LETT-P~CK~RD: 3086 a~se~bl cr SOURCE L I NE
1C4C 894004 18c5 MOv tSI~C8X14~,Rx 1-C4F E8CQF8 1826 C~LL SPU_LED_FL~SH
1C52 E841FR 1827 I:RLL LED_81N_8 1~8 , 1C55 88362807 1829 ~OY SI,tlC_BtTE~
1C59 81C6000~ 1830 RDt SI,HELP
1C5D 881C 1~31 ~ov CSI~,BL
. 1~32 ;
1C5F E83000 1833 FOPCED EvENT: CRLL EV_FREQ_RDRS
1C6. 833COo 1834 CMP JORD PTR CSI~ r 1C65 741? 183S J~ IRC YOYRKU : Hou~u S3~t~im3~n 1C67 833C01 1836 CMP WORD FTR tSl~
1C6A 740C 1837 J2 EvENT_RTl 1~3~ , 1C6C E86D00 , 1839 C~LL PRY_CH ~IRU , CCc P.3~,~ Ch.3nr~1 Tunin.~ ~]~
1C6F EB39F8 1840 C~LL SPU_LEC_DISP : tCC F3 1C72 E8OE01 1841 CRLL EVENT_8IN_TBL
1C75 E933FF 1842 JMP EVENT_KEY_luRIT
1~43 ;
1C78 E8P4F8 . 1844 EYENT PT 1: C~LL SPU LED FLRSH
1C78 E92DFF 1845 JMP EVENT_KEt_l~RlT
1~46 , 1C7E E996FC 1847 IR~ YOtRKU: JMP UT NO WT END
1848 ;
184g ; ~**~***~**~ BI = ES_EYENT_TIMER + tCONV_NO~ * 128 ~ Ch3nn~1 1850 r 1C81 88362407 18SI ES_P~t_STRTUS: MOV SI,tCONY_NO3 IC8S B107 18S2 MOV CL,7 1C87 D3C6 1853 ROL SI,CL
1C89 81C60006 1854 RDD SI,ES EYENT TIMER ; Tim~r ~.~.Jre3 1C8D 03361E07 185S Rtlt SI,tBINRRY_LED~ ; Ch3nn~1 1C91 C3, 1856 RET
1857 ;
1Cg2 BE0009 18S8 EY_FREQ_RDRS: MûV Sl,EVENT_NO_FREQ
1C95 03361E07 - 1858 RDD SI,CBINRRY LED~
1C99 93361E07 1860 ~DD Sl,tBlNRRY_LEC~

1~62 ;
1C~E 8836~801 1~63 KEI RKU: ~ov Sl,CIC_EYTE~
1CR2 81C6000~ 1864 ~DD Sl,HELP
1CR6 8R1C 1865 ~aY BL, tSI~
1CR8 8700 1866 MOV BH,0 ICR~ 891EIE07 1867 MOV t81NRRY LED~,BX
1CRE E8DOFF 1868 I:RLL ES PRY STRTUS
1C81 268024F8 1869 RND 8YTE PTR ES:tSI~,0F~H
1C8S R02R07 1870 MOV RL,tQEYICE_NO~ -1C88 260804 1871 OR ES:tSI~,~L

IC8C 88362807 1873 KaIt~Ku: MOV SI.tlC BYTE3 ICC0 81C6000R 1874 RDD SI,HELP
1CC4 8R1C 1875 ~ov BL,tSI~
1CC6 8700 1876 ~OV 8H,0 1CC8 891E1E07 1877 MOV t81NRRY_LEDl,8X
1CCC E882FF 1878 CRLL ES_PRt_ST~TlJS
1CCF 26803CF8 1879 CMP BrTE PTR ES:tSI~.0F.8H

1CD5 268024F8 1881 R~D BYTE PTR ES:tSl~,oFæH
. .

-~ 314 1 338043 HEULETT-PACKARD: 8036 A~mt.ler SOURCE LINE
1CD9 Fs 1882 STC
1CD~ C3 1883 RET
1CDB C3 1884 KA}YAKU ERRI RET
1885 ;
1CDC EsA2fF 1886 p~y CH MIRUI C~LL ES_PAY_STATIJS
1CDF 8480 1887 MOV AH,80H
CE1 26so3cFs 1888 CMP BYTE PTR Es:tsr~oF~H
ICE5 7Z02 1889 JC H~TU
1CE7 s~co 1890 MOV ~H, OCOH

1cEs 0~262E07 1892 HaTu: OR aH~tcoNv-No-sIT~
lCED so26soo73F 1893 aND BYTE PTR tNOW EVENT3,3FH
1CF2 08 68007 1894 OR tNOW_EVENT~,AH
cr6 EsF6F4 1 sss C~LL RUN_CONVERTER
Fs C3 1896 RET
1897 ~
lCF~ BE000A 1898 YOYAKU_SEARCH: MOV sr~HELF
lCFD 0336 807 1899 ~DD sr~crc-ByTE~
1D01 8700 1900 MOV sH~o 1D03 s~1c 1901 MOV BL~tsr~
Dos s3FBoo 1902 CMP sx,o 1Dos 740F 1903 JZ UP_U~KE~RI
1D0~ 4B 19 04 DEC sx Dos EsoBoo 1905 JMP UP_W~KE~Rr 1906 ;
1DOE 8E000~ 1907 up-yoyaKu: MOV ~I,HELP
1D11 03362807 1908 ~DD sr~trc-ByTE~
1DlS B700 1909 MOV BH,0 1D17 s~1c 1910 MOV BL,tSI~
1Dl9 sB36 407 1911 UP_W~KE~Rr: MOV Sr,tCONV_NO~
1D1D 8107 1912 MOV CL,7 lDlF D3e6 1813 ROL sr~cL
1D21 BlC60006 1914 ADD SI,ES_EVENT_TIMER
1D2s B164 1915 MOV CL,100 1Di7 43 1916 UYL: rNc BX
1D2s s3FB64 1917 CMP BX,100 1D2D B80100 1919 ~ov 8X,1 1D30 26F60007 1920 UYJ: TEST BYTE PTR ES t~r~tBx]r7 1D34 7506 1921 JNZ UD_Y_RET
1D36 FEcs 1922 DEC cL
1D3s 7sED 1823 JNZ UYL
Q3a F9 19~4 STC
1D3B C3 1s2s RET
~926 ;
1D3C 891E1E07 19~7 UD_Y RET: MOV t8IN~RY_LE8~.EX
1D40 Es2sFa 1928 C~LL BlNDEC_LEt 1D43 8E3000 1930 MOV sr~EvENT-cHBNNEL
1D46 03362407 1931 ADD Sl,tCON~ NO~
1r4~ sslc 1932 MOV tSI~, BL
1D4C sB362so7 1 934 MOV S r r t I C_BYTE~
lDso s1c6000q 1935 ADD SI,HELF
1Ds4 ss1c 1936 MOV tsr3~BL
1Ds6 Fs 1937 cLc 1Ds7 C3 1938 RET

- 315 1 338~43 HEWLETT-P~CK~RC) 8036 ~s~cm~lcr - SOIJFCE LINE

t~40 lD~8 BEoooa 1941 DQI~!N YOY~KUI: ~QV SI,HELP
lDSB 03362807 1942 ~DD SI,tIC_BYTE~
DsF 8alc 1943 ~ov BL,tSI~
lD61 B700 ~44 ~O BH,o lD63 sB3624o7 1q45 ~ov S I,tCQNV_NO~
ID67 B1 07 1946 ~O CL,7 lDs9 D3C6 1947 ROL SI,CL
lD68 81C60006 1948 ~DD S I, ES_EVEN T_T I ~ER
lD6F 8164 1949 ~ov CL,100 lD71 48 1g50 DYL DEC BX

1D74 8B6300 l9S2 ~OY BX,g9 1C77 26F60007 1g53 DYJ TEST BYTE PTR ES tS I~tBX~. 7 lD78 7S8F 1954 JN2 UD Y RET
lD7D FEcs 195~ DEC cL
lD7F 75F0 1 9S6 JNZ DYL
lD8 1 F9 lss7 STC
lD82 C3 1958 RET
19~9 ;
1D83 ~OIE07 1960 E ENT_8IN_TBL ~Ov ~L,tBIN~RY_LED~
lD86 8E3000 1961 ~Ov SI,EYENT cHaNNEL
lD89 03362407 ~g62 ~DD Sl, tCONV_NO~
lD8D 8804 1963 MOV tSI~,~L
lD8F C3 1964 RET
1965 ;
1966 ;
1~67 ; ---------_--_--_____________ _ 1~68 ;
1969 ; another Subroutincs 1970 ;
1971 ;- -- ----___ __ 1972 ;

1D90 58 1974 ~NGO_TOUROKU PQP ax ID91 BE0004 1975 ~ov SI,NEXT GO ~DRS
1Ds4 8700 1976 ~ov BH,0 lD96 s~1E2so7 1977 ~ov BL,CIC_BYTE
ID9a 02D8 197a aDD BL,8L
lDsc 8900 1979 ~Ov tSI~CBX~,~X
1980 ;
ID~E 88~CD4 1981 aNGo-1-~o ~O~ ~X,aSCII NU
Da1 EaooF7 lg82 C~LL SPU_LED_~X
Da4 E881F8 19R3 C~LL TI~ER 10 SEC
1984 ; _ _ 1Da7 E81OFa 1985 C~LL NEXT CONTINUE
1986 ;
Daa E8FC00 1967 C~LL aNGo SUB
ID~D 7307 1988 JNC ~NGO_1_20 ID~F 3C16 1989 C~P aL,CLE~R rEi_CODE
1DB1 7S71 1990 JNZ ~NGO ERR
1DB3 E942FB 1991 J~P R~NDO~ ~ODORI
IDs6 8800 1g92 aNGO I .Q: ~OV tSI~tBX~,~L
IDB8 8aoo 1993 aN~n-l-21 ~ov aL~ tS}~CE;.~
1DB~ ~28407 1994 ~ov tLS8_LEtl],~L
1DGD 8420 1995 ~OV ~H,2QH

-~ , HEuLETT-F~CKaP~G: 8086 a~bler SOURCE L I NE
IDBF EsoEo1 19a6 caLL aNGo-sug1 1~7 ;
DC2 E8FsFs 1~98 C~LL NEXT_CONT I NIJE
1 qg9 , IDCs EsEloo 2000 caLL aNGo-suB
IDC8 7306 2001 JNC QNGO_l 30 lQCa 3C16 2002 C~P aL~l:LE~R-KE~ oBE
1DCC 75S6 2003 JNZ aNGo-ERR
1DCE EscE 2 no4 J~P aNGo-1 lo IDDO 884001 .ooS aNGo-1-3o~ MO~ tsI~csxl1~ ~L
1DD3 sa4001 ~006 aNGo-1-31: ~OY aL~tsl~cB
1DD6 Q2s4o7 20q 7 M0~ [ LSB_LEQ3.~L
1DD~ sa20 20q8 M0'~ aH,CSl~tBX~
1QDB E8F200 2qO9 CaLL aNGO_SU61 1DDE E8D9Fq ~ q1 1 CaLL NEXT_CONTIl`lIJE
2012 ;
DEl E8CS00 2013 C~LL aNGo-suB
1DE4 7306 2 014 JNC ~NGO_1_4 d -1QE6 3C16 2015 CMF aL,CLEaR_KE~_COGE
1QE8 7sEs 2016 JN2 aNGo-1-31 DEa EBCC 2017 JMP aNGo-1-c1 1DEC 884002 ~018 aNGo-l-4o: ~ov tsl~tsxl2J~aL
1DEF 8a4002 2019 ~NGO_1_41: rov aL~csIJtB
1DF2 a28407 020 MOV tLsB-LEB~raL
lDFs 8a6oo1 2021 ~ov aH~tsI~[Bx~13 lDFB E8DS00 2022 CaLL aNGo-sus1 2023 ;
lDFB E88CF9 20~4 caLL NEXT_CONTINUE
202S ;
t~FE E8a800 7026 C8LL aNGo-slJB
lEOl 7306 2027 JNC aNG0 1_RET
IE03 3C16 20~8 CMP QL~cLEaF-KEt-coGE
lE05 7SlD ~029 - JN~ ~NGO_ERF.
E07 EBCa 2030 JMP aNG0 1 31 Eos 884003 .031 aNco-1-RET: MO~ CSI~tBx~3~ ~L
1E QC a.8407 2032 MOY ~LSB LED~ RL
1EOF 8a6002 2033 MOV ~H [SI~[BX
1E12 E8BB00 203s C~LL aNGo-sus1 2035 ;
1ElS BE0004 2 036 MOV S I r NEXT_GO_~GRS
lE1~ B700 2037 MOV BH 0 1E1a 8a1E~8o7 2038 MOY BL~ -e~lTE~
1E1E 02QB 2039 ~DD BL BL
1E20 8B00 2040 MOY ~x~esl3t 1E22 5 0 c 041 PUSH ax lE23 c3 2042 RET
2043 ;
2044 ~
20~S ;
1E24 EgeBFa 2016 ~NGO_ERR: JMP MSGERR_I~t_ENG
204~ ;
2048 ;
C q49 lE27 S8 ~050 aNGO_lNPUT: POP ax 1E2s BE0004 20S1 MO~ SI~NEXT_I;O ~BRS
lE2e B700 2052 ~OY BH~ 0 _ . . - . .

317 ~ 1 338043 HEl.dLETT-P~CK~BD: ~036 ~-.om~I~r SQUPCE LIHE
lE2D 8~1E2807 2053 ~OV BL,tIC_BrTE7 IE31 02DB 20S4 ~DD BL,BL
1E33 8900 205S MOV tSI]tBX7,~X
,0S6 :- ~
IE3S B8B6B6 2QS7 ~NGO 2_10: MOV aX,0B B6H
IE38 E369Fo 2 05a C~LL SPU_LED_~X
lE3B E81~f8 2059 C~LL TIMER_IQ_SEC
2060 :
1E3E E879F9 2061 C~LL NEXT_CONTINUE
2062 ;
1E41 E86500 2063 ~NGO_2_11: C~LL ~NGQ_SU6 IE44 7307 2064 JNC ~NGO_2_20 IE46 3C16 206S CMP ~L,SLE~P_KEr_CODE
1E48 75D~ 2066 JNZ ~NGO_ERR
lE4~ E9~8F~ 2067 JMP R~NDOM_MODORI
1E4D 8800 2068 aNGO_2_20: MOV tSI~t ex ~, ~L
1E4F B8Bo86 2069 ~NGQ_2_21: MOV RX,36B6H
lE52 E88900 2070 C~LL ~NGO_SUe2 2071 :
lES5 E962F9 2072 C~LL NEXT_CONTINUE
2073 :
tE58 E94E00 2074 C~LL ~NGO_SUB
lE5B 7306 2075 JNC ~NGO_2_30 lE5D 3C76 2076 CMP ~L,CLE~_KE`t CODE
1E5F 75C3 2077 JN2 ~NGCI_ERR
1E61 EBD2 2073 JMP ~NGO_2_10 1E63 884001 2079 aNGO_2_30: MOV tSI~tBX~ L
1E66 B88620 2080 aNGO_ _3t: YOV ~X,20BoH
1E69 E87200 2081- C~LL ~NGO_SUB2 2082 ;
1E6C E84BF9 2083 C~LL NEXT_CQNTIN'JE
~ 084 ;
lE6F E83700 208S C~LL ~NGO_SUe IE-2 7306 2086 JNC ~NGC_2_40 lE74 3C16 2087 CMP ~L,CLE~R_KEV_CODE
IE.6 7S~C 2088 JNZ aNGO_ER~
78 EBD5 2089 . JMP ~NGO_2_21 IE7~ a84002 2090 ~NGO_2_40: MOV tSI~tBX+2~,~L
lE.D B88620 2091 ~NGO_ _4t: MOV ~X,2086H
lE80 E35B00 2092 C~LL ~NGO_SIJB2 2093 ;
IE83 E334F9 2094 C~LL NEXT_50NTINUE
20~5 :
IE36 E82000 2096 C~LL ~NGO_SUt~
lE8q 7306 2097 JNC aNGO_2_PET
IE3B 3Clo 2098 CMP aL,CLE~R_KE`t_C0t3E
lE8t) 7595 2099 JNZ ~NGO EPP
lE3F EBt~S 2100 ~ JMP ~NGO 2 31 lE91 884Q03 2101 ~NGO_2_RET: MOV tSI]tBX+:7.~L
lE94 B820Z0 2102 MOV ~X,2020H
IEq7 E~4400 2103 C~LL ~NGQ_SU82 lE9~ BE0004 2105 ~OV SI,ME``.T_GO_~DR~
IE9t~ B700 2106 ~OV BH,0 lE~F 8a lE2~0.7 ~1 0~ ~OV eL,tIC BITE7 .lE~3 02De 21Q3 ~Dt3 BL,~L
lE~5 aBoo 2109 ~OV ~X,tSI7t8X7 ~- 318 1 338043 HE4LETT-Fi~CY~PD: 8036 ~ mb l --~OU~CE L I ~IE
IE~7 So 2110 PUSH ~x lE~B C3 2111 PET
~112 :
;~113 21~4 :
1Ef~s f~08~07 2115 ~N50 sl!e nov f~L,CrEY Df~T~
lEf~C E85sF2 I t 6 Ci~LL Kf~7UKO
lE~F r30D 21 1. JNC KEY_BUFF f~nRs 1EB1 3C n o lla CMP f4L, T I MEP_OUT_SCIr!E
lEB3 7504 ~ 9 JH2 Kf~ORU
lE8S 58 120 POP f~X
lEB6 Eg3FFf~ 2121 JMP Rf~ WM MOC~OPi 1EB~ E~Q200 122 ~t~QPU: C~-L KE,_BI!FF_~tPS
1EBC F~ 2123 8TC
lEBD C3 2124 PET
~12S :
.lEBE 8E0010 2126 KEY 8UFF_~DRS: MOV Sl,KEY_D~T~_ST~CK
IECl B700 127 MOV BH,0 1EC3 8f~1E2~07 2~23 MOV BL,t I c-eyTE~
lEC7 03DB 212~ f~QD RX,BX
IECs 03DB 2130 f~DD BX~BX
IECB 03DB 2131 f~DD 8X,BX
IECD 03DB 2132 f~DD BX,BX
lECF C3 ~133 RET
~13~ ~
IEDO 8s268so7 2135 ~NtiO_SU81: MOV tMS8_LED~,f~H
1ED4 E3BDF4 2136 C~LL SPU_CLE~R_DISF ..
tED7 E8Dlf5 2137 Cf4LL SPU LED bISP
-lED~ E87BF7 2138 Cf~LL TIMER_lQ SEC
1EDD C3 ~13~ PET
"; ~140 : `
lEDE E8C3F5 2141 ~Nrio-suB2: Cf~LL SPU_LEP f~X
1EEl E~74F7 .142 Cf~LL TIMER_10_5EC
lEE4 C3 2143 RET
2144 , EES E8P6FF 2145 f~Nrio eIN-Dx: Cf~LL KEY BIJFF f~b~5 IEE3 BSOO 2~46 MOV CH,O
lEE~ 3r~Fs ~147 MOV DH,CH
IEEC 3al0 214a rov DL,t5I~tRX~ ; GX = #1 lEEE 30E2QF 214g a~D DL,OFH
tEF1 E31F00 21S0 Cf~LL MULTI_10 bX ; DX = #1~1C
IEF4 3a4aol 2151 MOV CL,tSI+1~CBX~
1EF7 30E10F 21S2 hND CL,OFH
IEFf~ Q3bl 21S3 ~DD DX,CX ; DX - #1*lr!+#2 lEFC Ea14oo 2154 Cf~LL MULTI_lQ DX : BX -~ #l*lr!+#2)~1Q
IEFF 3a4~02 2155 MOV CL,tSI+23tBX3 IF02 8OEIOF 21S6 a~D CL,0FH
lfos 03D1 21S7 ~Db DX,CX DX = ~#1~0+#2:~ln+#3 lF07 E8osoo 215a Cf~LL MULTI Ir! bX : GX =~ #l~lfJ+#2:i~10+#3 ~*ICI
1F0~ 3~4ao3 215g MOV CL,tSI~:~tBX~
1FOD 30E10F 2160 ~ND CL,OFH
IF10 03t!l 2161 abb bX,CX : tix =~ ~. #~ ~I f!+#2 i*l 0+#~ 1 f.1+#4 ~1~3 :
IF13 03D2 2~64 MULTI_l 0_bX: abD bX,DX , *2 lFlS aBc 21BS MOV t~X,DX
1F17 q3Co 2166 aDD f~x,ax : ~2*2 = *4 .. , . . . _ ... . . . .. .. _ . . _ .

3~ 9 1 338043 HE~ILETT-FH!:~HFb S036 H3s~b 1 ~r : SOIJPCE LINE
Fl 9 03C 0 2 t ~i7 ~tiD HX, HX : ~2~ ~2 --*3 1FlB 03D0 2t68 ~Dt! bX,HX ; *2 + *3 = *l 0 lFlD c~ 216B RET
o:
Cl71: #d.~ *~#~## I~:e~J In Shit3 ,qn~u WQ bl~pI3J sur~J ~*~*~ **~**
~172 :
lFlE 59 2173 HNso-t)lspLHy: pop HX
lFlF BE0004 2174 MOV SI,NEXT CO ~b~S
lF22 B700 21.S MOV BH,O
IF24 salE23o7 2l.~6 MOY BL,t I C BYTE~
lF2S 02DB 21, 7 ~DD BL,BL
IF2~ 3g00 Cl7a MOY tSI~t8X~ ,HX
cl . ~:
lF2C Es3FFF ~ 2130 c~LL ~EY BIJFF HO!PS
lF2F C6400700 2131 MOY BYTE PTP C3I ] CB`'+7~, 0 ~l32 :
lF33 Bsss4l 218 3 ~NGf~ J_I~T_LP MOY ~ SC-I l_~U
IF~6 E~6BFS 2134 C~LL spu LEG ~X
lF3~ E8oaF7 2l35 c~LL TIMER I 3EC
c136 ~
lF3C Es7BFs -l3f c~LL NEXT C0NT I NUE
2138 :
-IF3F ~08go7 2l~9 nov ~L, tKE~f D~TH~
lF42 3C12 21~0 CMP ~L,~UTHO_~E~f_CObE
lF44 7476 21~1 J~ ~tJGO ~INTEI
lF46 3C16 21~2 c~p ~L,CLE~R KEY COCE
F4s 7462 2193 J- ~NCO NO ~UTHO
F4a Ea7 1 FF ~1~4 CHLL KE~f BUFF HbRS
IF~D FE4007 21~5 INC BYTE PTR C S I ] C BX~ 7 ]
lFso B020 2196 MOV HL~2oH
1F52 a28so7 2197 MqV tMSB LED~,~L
F~s 8~0 2198 MO'~ aL~ B~
FS7 ~2a407 21~ MOV tLSB LED],~L
lFSa EB4EF5 2200 CHLL spu LEb DISP
t FsD EaE6F6 2201 HN~O_b I SP_LP CHLL T I nER_l_SEC
2202 :
lF60 Eas7Fs 2203 caLL NEXT CONTItlUE
2204 ;
lF63 ~0~907 2205 ~ov f~L,t~:EY t)HTH~
lF66 3C12 2206 cnP HL,HUTHO_FE~f_CQC3E
F6a 7452 2207 JZ ~NGO NINTEI
F~H 3C16 2208 c~p HL,CLE~ ~E~ bE
lFBC 743E 220g J2 HNCO NO HUTHO
lF6E Ea4DFF 2210 CHL~ KEY_BI!FF_Ht!RS
lF71 3P6007 2211 MOV ~H,CSI~tBX
lF74 30E403 2212 ~ND HH,3 lF77 0~DC 221 3 0P BL,HH
lF7~ 3H4OFF 2214 MO~ ~L,t~SI~tB~
lFfC H23S07 221S MCV tMSe LEb~,HL
lF7F 8~00 2216 MOY ~L,CSI~CB:'~
IF81 ~23407 2217 MOY tLSB_LEb3,~L
IF84 E80DF4 2218 C~LL SPU CLE~F DISP
IF87 E821F5 2219 C~LL SPU~LED_DISP
~220 ~
lF8a E831FF 2221 C~LL KEY BUFF_~GRS
IF8D FE4007 2222 INC BYTE PTR tSI~tBY
lF90 8~6007 2223 MOV aH~csI3tBx~7~

~.

`

HE~LETT-P~CKQ~t): 8086 ~ss~m~I~r BOU~CE L ~ ~E
Fs3 soFc96 -2 4 C~P aH~1so Fs6 7314 -~S JNc aNGo NO auTHo Fss soE403 ~6 ~ QND QH,3 1FgB 75C0 223- JNZ QNGO t`lSP LP
tF9D E8a6F6 22~8 auGo AU_RETRY: CQLL TIMER f_SEC
~c29:
Fao Est7Fs ~ 30 caLL NEXT_CONTINUE

1Fa3 Qosso7 2-,~ NO~ RL,tKEt_QQTQ~
Fa6 3C12 -~33 C~P ~L,QUTHo_KEY_I,Ot!E
1Fas 741 2 34 J- QNCO_NINTEI
Faa EB8, - 235 Jrp aNGO Qu I~T LP
236 ;
lFaC EE0004 -237 ~NGO NO QUTHO: ~o~ SI,NEXT_I;o_PDRS
1F~F B700 ~238 ~ov BH.o 1FB1 safE2q~)7 33g ~a~ BL,t I C_t-;~TE~
Fss 02DB 2.40 QDD BL, 8L
IFB, sBoo ~41 ~oY QX,tSI~tBX~ -1FBs SO 2242 PUSH QX
1FBa F9 -243 STC

~4S .~
lFBC BE0004 ~r46 aNGo NINTEI: ~0~ Sl.NEXT ~;0 QDRS
IFBF B700 -2~4. ~a~ BH,o 1FC1 8a1E-8o7 - 48 ~a~ EL.. tlC_EYTE~
Fcs 02DB ~49 ~DD EL.BL
FC7 8BOO -so ~a~ Qx~tsl~te lFC9 SO 2 S1 PUSH QX
1 FC~ F8 2 52 CLI
1FCB C3 2r 53 RET
,. 2^54 , ~2~6 ;
1FCC 3C88 -~57 PQY_GROUP_l: C~P aL,58H
1FCE 7406 2^58 J~ PaY PRol; ST~RT
lFQO 3c8a 2 59 C~P QL~s~H
1FD2 7478 260 J2 P~Y_PRaC_',TaP

~63 ;
1FD6 8a4405 2264 PaY_PROG_~TaRT: hO~ ~L,~SI+5~ ; Ch~nn~l -1FDs B400 26S ~o~ aH~o 1FDB 8B5406 ^266 ~0~ DX,tSI+6~ DX = Fr~q. Q.3t~
1FDE BB0009 226, ~0~ BX,E~ENT NO FRE
1FE1 o3Ds 2268 hDD ex~Qx 1FE3 03D8 22b9 QDQ BX,QX EX = Fr~q. T.~ Q~ r~_~
1FE5 8917 2 70 ~0~ tBx~,DX ; Fr~qu~n~ S~t, -271 :
1FE7 BaOOOO 27~ ~o~ QX,O
fFEa Beooo6 32,-3 ~o~ BX, ES E.JENT TI~EP
f FED 03D8 2274 ~QQ BX,Q::
2275 ;
1FEF 83FQ06 2276 EY F ST C~: C~fP QX 6 1~F2 7356 2 77 JNC P_i_sTQRT_RET
2278 ;
1FF4 26F6070- 2 79 TEST BYTE FTR ES:tBX~,7 1FF8 7449 2~80 JZ NEXT_E~_ST

321 t 338043 HEl~LETT-P~5K~RD: .?086 ~Cc~m~I r SOUFCE LINE
281 ;
1FFa SO2282 PUSH a~ : Ch-~nn~ 1 1FFB 53-283 PUSH EX : N t,h C~nv~rt,~l~ E-~Gnt Tim~r ~ r-~5 1FFC S22c84 PUSH DX : Dr-~p N~

1FFD R31E0l 2-æ6 ~O~.J tBlN~P~ LED~
2000 88162407 ~87 MOY C CON'.'_NO ~ . DL
2004 268ao7 -288 ~0~ aL~E; ~ B.~;
2007 240728a aND a~,7 2dO~ 7S0222~0 JNZ DEV OK
200~ 800222q1 no~ a~
20~Q a22ao7 2293 DEY_Ok: MOY CDEV{CE_Nl31,~L
2010 02C0 2294 aDD QL,aL
2012 02C0 229S ~DD aL.aL
2014 02C0 22C6 ~QD aL,~L ; aL
2016 02D0 2297 ~DD DL,~L
2018 88162807 ~2a8 MOV CIC_EYTE~DL
201C E81~F0 72g9 C~LL CONV_TO_DROR
201F E884F0 2300 C~LL ID_DROP_DE~ICE
2022 E88FF3 2301 - CaLL SPU_REL~t_ON
2025 8B1E1EO, 2302 Ml3V BX~CElN8Fï_LED]
2029 E83CF7 2303 CRLL 61NDEC_LEG
23 04 ~
202C BE8003 2305 MO~ JUMP_~Dt,F.ESS
202F 03362807 2306 ~DD SI,CIC_EYTEl 2033 0336280, ~307 ~DD SI.t IC E~TE~
2037 8B161~0- -308 MOU CX,CB~:;E FOINT~
2038 8914 230~ MO~J CS13.DX
~310 :
203D E81FFC 231 1 CaLL FORIED E~.JENT
, 2312 ) 2040 5~ 2313 POP DX

2042 S8 2315 POP ~;:
2043 42 2316 NEXT_EV_ST: INC DX
2Q44 81C38000 2317 ~DD 6x,l2-?
2048 EBbS 2318 JMF EV F ST C~

204~ F8 ~320 P_P_~T~RT_RET: CLC

2322 ;
204C 90 2323 PaY_PFOG_STOP: NOP
204D F8 2324 Pa~i l,ROUP 2: CLC

23~6 ;
2327 ;
c328 ;
232,? ~LOB~L PO~ER DET CMD
2330 CLOBRL LO~C_FROM_DRqP
2331 cLosaL LoaD-To-DRop 2332 CLOB~L -`PU_ST~TUS RE~
2333 OL08aL ID_DROP_DE~JICE
2334 GLOB~L I C_t`ROP DE~' I CE
2335 CLOEaL CllN~ _BlT aL
2336 GLOEaL DROP B I T ~L
2337 CLOB~L SPU REL~ OFF

HE~LETT-P~CK~RD: 8086 ~ m~l_r SOURCE LINE
2338 GLOB~L SFU_CLE~R DI5P
2339 GLOB~L E~E~T_LED_OFF
2340 GLOB~L DPOP_M~P SET
2-41 GLOBhL KEY_nPER~TIQ~
2342 GLOB~L CON~. TO DROP
2343 GLOB~L DPOP_TO CQN~
2344 GLOB~L BINDEC_LED
234S GLOB~L LED_VIEI~_TBL
2346 GLOB~L SPU_LED_D15P
2347 GLOB~L PUN_CQNVERTER
2348 GLOB~L I~E~RI DE_ON
2349 GLOB~L OP :PU qFF
2350 GLOB~L OP_INITI~L
2351 GLOB~L B~5E_ROUTINE
- 2352 .GLOB~L ~'UMP ~DRS INIT
235~ CLQB~L ll!MP_~t~PS_INI~
2354 GLOB~L DE~ICE M~P SET
235~ GLOB~L P~Y_GROUP_I
2356 GLOB~L P~Y_GROUP_2 23~ :
23~8 ;
23~9 :
2360 EXTRN SPECI~L_SPU_1 2~63 2~65 Error,~,- 0

Claims (16)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN
EXCLUSIVE PROPERTY OR PRIVILEGE IS CLAIMED ARE
DEFINED AS FOLLOWS:

1. A cable television system for providing selected television signals to a plurality of remotely located subscriber premises, having a head end for producing a television signal and a cable network for conducting the television signal from the head end to a plurality of remote locations, each of which is adjacent but external to a respective subset of the subscriber premises, comprising:

external control unit means at each of the remote locations for receiving the television signal from the cable network;

a plurality of drop cables connected to each external control unit means, each drop cable conducting a selected portion of the television signal from the external control unit means to a respective one of the subscriber premises associated with that external control unit means;

subscriber device means connected to each drop cable at the subscriber premises for applying to the drop cable a first control signal indicative of data to be transmitted to the external control unit means, at least one of said subscriber device means being a subscriber processing unit means for allowing the subscriber to apply to the drop cable a first control signal including channel data indicative of the portion of the television signal which that subscriber wishes to select;

processing means associated with each external control unit means for processing the first control signals applied to all the drop cable associated with that external control unit means, for determining independently of the head end whether or not the portion of the television signal indicated by the channel data is authorized for viewing, and for causing that external control unit means to apply to each associated drop cable the portion of the television signal indicated by the first control signal channel data received via the drop cable if that portion is authorized, the processing means including common signal processing circuitry which at least partially processes the information represented by the first control signals applied to all of the drop cables associated with that external control unit means, and further including a microprocessor, alterable memory means for storing data representing which of the subscribers associated with the external control unit means is authorizedto receive each particular portion of the television signal, and communication means for allowing the head end to modify the authorization data stored by the memory means;

means associated with each external control unit means for applying to each drop cable a second control signal including data to be transmitted to the associated subscriber premises, at least a portion of which differs from the data included in the first control signal; and means associated with each subscriber device means to receive and store the data included in the second control signal.

2. The apparatus defined in claim 1, wherein:

said subscriber processing unit means includes a character display means;

the second control signal applied to each drop cable includes character display data; and said subscriber processing unit means includes means responsive to the received and stored second control signal for controlling the character display means in accordance with the character display data included in the second control signal.

3. The apparatus defined in claim 2, wherein the character display data included in the second control signal applied to each drop cable are indicative of the selected portion of the television signal applied to that drop cable by the external control unit means.

4. The apparatus defined in claim 17 further comprising:

means associated with the head end for applying to the cable network a downstream control signal indicative of data to be transmitted to at least oneexternal control unit means; and means associated with each external control unit means for processing the downstream control signal to receive and store the data indicated by the downstream control signal.

5. The apparatus defined in claim 1, further comprising:

means associated with each external control unit means for applying to the cable network an upstream control signal indicative of data to be transmitted to the head end; and means associated with the head end for processing the upstream control signal to receive and store the data indicated by the upstream control signal.

6. The apparatus defined in claim 4, further comprising:

means associated with each external control unit means for applying to the cable network an upstream control signal indicative of data to be transmitted to the head end; and means associated with the head end for processing the upstream control signal to receive and store the data indicated by the upstream control signal.

7. The apparatus defined in claim 4, wherein:

said downstream control signal processing means associated with each external control unit means includes means for producing address signal information which uniquely identifies the associated external control unit means;

the down stream control signal includes address signal data indicative of at least one external control unit means to which the downstream control signal is to be transmitted; and said downstream control signal processing means associated with each external control unit means includes means for comparing the received address signal data to the associated address signal information, and enabling the associated downstream control signal processing means to store the data indicated by the down stream control signal if the received address signal data bear a predetermined relationship to the associated address signal information.

8. The apparatus defined in claim 1, wherein said means associated with each external control unit means for comparing received address signal data enables said downstream control signal processing means to store the data indicated by the downstream control signal if the received address signal data correspond to the associated address signal information.

9. The apparatus defined in claim 4, wherein:

the downstream control signal includes broadcast address signal data indicative of all external control unit means; and said downstream control signal processing means associated with each external control unit means includes means for recognizing the broadcast address signal data, and enabling the associated downstream control signal processing means to store the data indicated by the downstream control signal if the received broadcast address signal data is recognized.

10. The apparatus defined in claim 4, wherein:

the downstream control signal includes channel authorization data indicative of the portions of the television signal which at least one subscriber associated with that external control unit means is authorized to select; and said downstream control signal processing means associated with each external control unit means includes means for causing said external control unit means to apply to each associated drop cable the portion of the television signal indicated by the first control signal channel data received via the drop cable only if the stored channel authorization data indicates that the subscriber associated with the drop cable is authorized to receive that portion of the television signal.

11. The apparatus defined in claim 7, wherein:

said downstream control signal processing means associated with each external control unit means includes data storage means for storing data at one or more storage addresses;

the downstream control signal includes storage address data indicative of a storage address in said external control unit means; and said downstream control signal processing means associated with each external control unit means includes means for causing said associated data storage means to store the data indicated by the downstream control signal commencing at a storage address which bears a predetermined relationship to the storage address data indicated by the downstream control signal.

12. The apparatus defined in claim 5, wherein:

the first control signal includes data indicative of information to be transmitted from a subscriber device means to the head end;

said processing means associated with each external control unit means includes subscriber data storage means to receive and store the information indicated by the first control signal;

the downstream control signal includes read data indicative of a request to transmit to the head end the information stored in said subscriber data storage means; and said means associated with said external control unit means for applying the upstream control signal includes means responsive to the downstream control signal for enabling said means for applying the upstream control signal to apply to the cable network the upstream control signal including data indicative of the stored information.

13. The apparatus defined in claim 5, wherein:

the first control signal includes data indicative of information to be transmitted to the head end;

said processing means associated with each external control unit means includes accumulation and storage means to accumulate and store the information indicated by the first control signals applied to all of the drop cables associated with that external control unit means;

the downstream control signal includes send function data indicative of a request to transmit to the head end the accumulated information stored in said accumulation and storage means; and said means associated with said external control unit means for applying the upstream control signal includes means responsive to the send function data of the downstream control signal for enabling said means for applying the upstream control signal to apply to the cable network the upstream control signal including data indicative of the accumulated and stored information.

14. The apparatus of claim 4, wherein:

the first control signal includes data indicative of a request to view a pay-per-view program event;

the downstream control signal includes pay-per-view program event data indicative of the transmission of a pay-per-view program event and the portion of the television signal corresponding to the pay-per-view program event; and the downstream control signal processing means associated with each external control unit means includes means responsive to the pay-per-view program event data of the downstream control signal for applying the each associated drop cable the portion of the television signal indicated by the downstream control signal if the pay-per-view program event indicated by the downstream control signal corresponds to the pay-per-view program event request of the first control signal.

15. A cable television system for providing selected television signals to a plurality of remotely located subscriber premises, having a head end for producing a television signal and a cable network for conducting the television signal from the head end to a plurality of remote locations, each of which is adjacent but external to a respective subset of the subscriber premises, comprising:

external control unit means at each of the remote locations for receiving the television signal from the cable network;

a plurality of drop cables connected to each external control unit means, each drop cable conducting a selected portion of the television signal from the external control unit means to a respective one of the subscriber premises associated with that external control unit means;

subscriber device means connected to each drop cable at the subscriber premises for applying to the drop cable a control signal indicative of data to be transmitted to the external control unit means, at least one of said subscriber device means being a subscriber processing unit means for allowing the subscriber to apply to the drop cable a control signal including channel data indicative of the portion of the television signal which that subscriber wishes to select;

means associated with each external control unit means for processing the control signals applied to all the drop cables associated with that externalcontrol unit means, and for causing that external control unit means to apply to each associated drop cable the portion of the television signal indicated by the first control signal channel data received via the drop cable;

means associated with the head end for applying to the cable network a downstream control signal including channelization data indicative of a desired correlation between each portion of the television signal which can be selected by the subscriber and the channel data indicated by the first control signal used to select each portion of the television signal; and means associated with each external control unit means for receiving and storing the channelization data and for causing the external control unit means to apply to each associated drop cable the portion of the television signal which is correlated to the control signal channel data received via the drop cable, and for allowing the head end to modify, using the downstream control signal, the stored channelization data.

16. A cable television system for providing a television signal from a head end to subscribers, comprising:

means for generating a channel selection control signal indicative of the portion of the television signal which that subscriber wishes to select;

means associated with the head end for applying to the cable network a channelization control signal including data indicative of a desired correlation between each portion of the television signal which can be selected by the subscriber and the data indicated by the subscriber control signal used to select each portion of the television signal; and means associated with at least one subscriber and responsive to the channelization data for transmitting to the subscriber the portion of the television signal which is correlated to the channel selection data indicated bythe channel selection control signal, said means responsive to the channelization data including alterable memory means for storing the channelization data, and means for allowing the head end to modify, using the channelization control signal, the channelization data stored by the memory means.