CA1338044C - 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

~ \ -~ I 1 338044 CABLE TELEVISION SYSTEM
This is a divisional application of Canadian Patent Application No. 481,221, filed on May 10, 1985.
Background of the Invention 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-

-2- 1 3380~4 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 conve-r-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-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 .

` - 1 338044

-4-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 5k-5s are collectively a schematic diagram of the gate array shown in Figure 5c.
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 1 33~044 .

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 messagés 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 SUB1, 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 channel.

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 HDRC 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 1 338n44 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 MHzj which is independent from all other frequency 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 minimizes 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.

-8- ~ 338044 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 SU1, 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 functi-on 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" ECU1 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.

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 DROPl, 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 -lO- 1 338044 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-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:

1 3380~4 TABLE A
Type of Signal Approximate Frequency l. 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 two 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 1 3380~4 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.

-14- l 338044 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 cont~in'ng 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 SU1 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 338044 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 ter~in~l. 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 1 ~38044 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 subscriber's 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 processeslthat 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 indi-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 SUl 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-pu~ 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 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 (lj 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~in;ng elements in the SU are (1) a power 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 1 33~8044 -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 .5 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 SUB1, 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 ` -20- l 338044 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 mi xi ng 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 -22- l 338044 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 "1" 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 whi~ch 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 1 3~BQ44 52 (Figure l) 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 freguency 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 338044 carrier signal is applied to thè 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 terminal 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 1 3380~4 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 420.
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 ~ 338044 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

9 IN8 11 INll 13 ___ In addition, leads with EX labels in Figures 5k-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 ('IRTS'' or "DTRA") lead by which it interrogates communication 1 33804~

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, A1, A2, PCS0, TlOUT, and T00UT 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 DRQl 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 Al 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 tra~nsmitted. 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, 1 33~0 1 1 .

RESET, CLOCK OUT ("CLKOUT"), READ ("RD"), and WRITE
("WR") leads. The TOOUT 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, CLKOUT, 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 PCSl 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 ar~ay 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 supply 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 T1 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 - ` -34- 1 338044 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~nd 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 `~ 1 33804~

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 (''LCSI') 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 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-wave 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~ 1 338044 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 convention-al 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~erate the ECU associated with that subscriber, each SU includes power detection circuitry, earlier described, to turn the SU off in the event that AC

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 connected 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' 1 338û44 television appara~s 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 RAM memory. An object and source code ~ ~ ~33~44 computer program listing which will be readily under-stood by those sKllled 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 B1 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 mlcro-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- 1 33804~
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 transmit-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.

~43~ 1 338044 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.

VII~. 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 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 ~ _45_ 1 33~4 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 1 33~1~44 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_ 1 338044 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 (i.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 is 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 service.
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~ 1 338044 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 devices 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.

" _50_ 1 338044 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.

" ` ~ -51- 1 338044 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-ECU
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.

1 33~44 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-` ` -53- 1 338044 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 ~ 338044 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 _55_ 1 338044 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 tabIe sets forth the function codes used to control SPU or device operation in one embodiment of the invention:

~ - 6- 1 33804~
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 Enabie 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.

` - 1 3~Bû4~

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, 1 33804~

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-S 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 -59- ~ 338044 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.

1 338a44 . -60-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 ~he 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 -61- 1 338~4 903, 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 i5 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 ad~ances to step 910 where the Drop Processor determines what type of command (earlier described) was included in the message sent by the Data Pro-ces,sor. 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- l 338044 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 ~rop 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 (1) 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.

~ 33~44 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 Drop 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 devlce map pointer to the beginning of the device map, and loops to step 951 to listen for the presence of a Service Request on another drop. On the other hand, if at step 960 the program determines that the drop pointer is at the end ~f 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 whéther 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~i ni ~g 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.

- 133804~

Assuming now that 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
(earlier 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") ~ -66- l 3~804~
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 Command 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 lOa. As shown in Figure lOa, each message is of a predetermined format, comprising: a FLAG byte, two ADDRESS bytes specifying 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- ~ 33~04~
The FLAG bytes identify the beginning and end of a message. Each FLAG byte has a unique bit pattern ("01111110"). 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 containing 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 1 33804~

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 two 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 ` -69- 1 338044 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 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 ` - -71- l 338044 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 Iess 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 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 program 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 equal 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.

1 338~44 Still another message sent from the CCC to an ECU is an ECHO BACK message, illustrated in Figure 14. An ECHO ~ACK 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 FO, 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 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 1 338~44 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 count 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--ver~er/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 "O" 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 O, 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 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.
During 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

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.

` ` ~ 1 338044 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 .

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.

_, 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 ` 1 338044 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 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 t 338044 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 1044 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 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 the`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 ` -88- l 338044 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 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 error 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 so--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 1079 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 -- ~ 33804~

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 mi ni ~i 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 338044 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, ` ~ 1 338044 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 messa-ge.
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 Reguest ("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 ` -95- 1 33~44 (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. ~ach GPR byte consists of one byte-time of carrier from the ECU, or "llllllll. 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 ~ 33ao44 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 GLRT 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:
~.

TABLE E 1 3S804~
P I RWC CTL BYTE

Bl 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 idéntity 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 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 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 + l 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 338044 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 - 1 3380~4 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 threshold 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 BSPHI 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-t 338044 ~- -104-mission of lengthy formatted messages, thus mi ni mi zing 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.

CP~r. TLCS-4~ ~SSEr~LER V2.2 P~GE

LOC OBJ LlNE SOURCE STPTE~ENT
l; . . ;
2 ~ 7.1983. ;.
3 ~ m~in.~m V1.0 4 ~ ~T~P~740P) ;
6 ~ m~in routin- ;
7 ~ ;
e;
9;

~nolist .
. .
~ t ROh P~GE NO.l~
03E0 307 org h~ 3sO
308 ~ `
309 ~ -310 ; initi~li2-311 ~
03E0 3680 312 m-inl diclr il,O
313 ;
314 ~ r-r cl-~r 31~ ;
03E2 CO 316 ld h, ~h' O
03E3 EO 317 ld l,~h'O
03E4 io 318 mov h, a 319 ;
03E~ 1~ 320 m~iO~ t ,~hl~
03E6 P~ 321 b m~iO
. 322 1 03E7 38C1 323 dd h,fh'l 03E9 ~ ' 324 b m~iO
3Z5 ~
326 ; in / out port initi~liz-327 ~ ~
03E~ 3~89 328 out a,%opl9 ~ d-vid-r~r-~-t 03EC 3~8C 329 - out ~,~oolc ; count-rl r-~-t 03EE 3~8D 330 Oue ,, %opld ~ countcr2 r-s-t 331 ;
03F0 4F 332 ~ ld ~h~f 03F1 3~1 333 out ,%opOl ; l-d displ~y.
03F3 3~2 334 out a,%opO2 ; led disDl~y 03F~ 3~R4 33S out ~,%opO4 ~ rrlay,k-y~can out 03F7 3~ 0 336 out ~,%op0~ ; k-y-c~n out 03F9 3P~6 337 out ~,%opO6 ; l-d drivCr,vlfout 03FD 3~R7 338 out ~,%opO7 ~ kcyscan in 03FD 3~8 339 'out ~,%opO8 ~ interruots APPEND IX A

1 3380q~

CP~ TLCS-47 ~SSE~BLER v2 2 paGE 2 LOC OeJ LINE SOURCE STRTE~ENT
03FF 3RR9 340 out ~,~oDO9 ~ no u~
341 ~
342 ~ t~ck point~r word initi-liz-ROh PR OE NO 16 *
0401 4C 344 ld ~,~h'c 0402 3FFF 34S t ,-p~

0404 4R 347 ld ~,th'~
040 3FCR 348 ~t ~rwrpch ; ~ h'~OO-3SO I l d d~t- ~-t 3S1 ~
0407 4F 3S2 ld ~,Sh'-0408 3F3S 3S3 ~t ,ld-tnl 040R 3F39 3S4 ~t ,ld-vml 3~S I
040C 43 3S6 ld ~,Sh'b 040D 3F36 3S7 ~t ,ld-tn2 040F 3F3R 35e vt ~,ld~mZ
3~9 ~
0411 4F 360 ld ,Sh'-041Z 3F37 361 ~t ,ld-tll 0414 3F3B 36Z t ~,ld--11 0416 4D 364 ld ,Sh'b 0417 3F38 36S ~t ,ld-t12 0419 3F3C 366 ~t ~,ld--lZ

041D 4F 36e ld ~,~h'~
041C 3F8D 369 ~t ~,l-cotl 041E 3F8E 370 ~t ,l cotm 0420 3F8F 371 t ,l coth 373 ~ k-y d-t~ ~ t 0422 4F 37S ld ~,~h'~
0423 3F2B 376 t ~k-yod 04ZS 3F42 377 ~t ~,k~tOl 0427 3F43 378 ~t ~,k-~t0h 380 ~ int~rruDt~ rcgi~t-r inti~liz-3el, 0429 47 38Z ld ~,th~7 383 ;
042R 3R89 384 out a,XoD19 ; d~v~dvr ~t~rt 38S ~
042C 3FlC 3e6 ~t ~,-irb 042E 13 387 ~ch ~,-ir ; i~io inhibit 3ee ;
3e9 ;
390 ; framing rror bit on 391 ;
~ .

"--~ 338044 CP/~ TLCS-47 ~SSE~LER V2 2 P~GE 3 LOC OBJ LINE 50URCE ~1~l~ _~T
042F 393S 392 ~ t ~puvum,3 ; fr~ming rror 394 ; tim r on 11 bit ti~
39~ ~
0431 3844 396 clr SopO4~0 ; tim r clock ~t~rt 397 ;
0433 4F 398 ld ~,~h'f 0434 3FF6 399 ~t ~,timrhn 0436 47 400 ld ,~h~7 0437 3FFS 401 ~t ~,timrmn 0439 4C 402 ld ~,~h'c 043~ 3FF4 403 ~t ~,timrln - 404 ;
043C 44 40~ ld ~,~h'4 043D 3PeC 406 out ~,Soplc ; ~t~rt 407 ;
408 ~
409 ~ n~hl- int-rrupt-410 ;
043F 3640 411 iclr il,0 413 ~
414 ; r-c-nt pow-r on 41~ ; ~ conv-rt-r -l-ction 416 ;
RO~ P~GE NO 17 ~
0441 3922 417 ~ t ~pu-1,2 ; upu ~t~tu- hi 41e ;
0443 391F 419 ~.e rvrc, 1 ~ ~crvic- rcauu~t 4ZO ~
044~ 33P4 421 t~t %opO4,2 0447 e3 422 b m~iOO
423 ;
044e 3933 424 ~ t ~pu~h,3 ; hi ch-nncl co~ cr 044~ eD 42~ b m~il 426 ;
044a 3973 427 m~iOO~ clr ~pu-h,3 ~ lo ch~nn-l co~ ~r 42e ;
429 ;
430 ~ 10 c bit 'on' ?

432 ~
044D 39E4 433 m~il~ t~-to ~Duvdm,2 044F eD 434 b m~il ; 10 ~ c bit on 43S ;
436 ;
437 ; c~ -nd x cut- bit 'on' 438 ;
439 ~
04 W 39F4 440 m~i20~ t-~tD ~puvdm,3 04~2 ~9 441 b m~i2 ; x-cut- 'comm~nd' 442 ~
443 ;

CP/~ TLCS-47 ASSE~9LER VZ 2 PaGE 4 LOC OBJ LlNE SOURCE ~l~lt~_~T
444 S k-y ean ?

446 ~
04S3 39ES 447 mai4 t- tD puvs1,2 045~ 6SDD 44e b mai3 ; k-ysean r~Cy 449 ~
4~0 s 4S1 ~ cry n~bl- ?

453 ~
04S7 39F1 4S4 m~iS t-stp spuvum,3 04S9 AO 4SS b m~161 4S6 ~ -04SA 3984 4S7 t--t Duvdm,O
04SC 8D 4Se b m il ~ cry nabl-4~9 ~
-04SD 2EOF 460 cmDr s~rvre,~h'O
04SF A3 461 b m~i62 0460 3D36 463 m~i61~ s-t %opO6,3 0462 8D 464 b m~il 46S s 0463 3876 466 m~i62 clr %opO6,3 467 ~
046S 3984 468 tast spuvdm,O
0467 AO 469 b m~i61 470 ~
0468 8D 471 b ~ail 473 ;
474 ;
47S ~ command x eut-477 ~
0469 3ClS 478 m~i2s ld a,eomm~h 0462 D2 479 cmpr a,~h'2 046C 6SD9 4eO b cor- ; not implicd comma nd 4el ~
046E 3C14 4e2 ld ,comm-1 4e3 ~
0470 SF 4e4 tc~t a,3 0471 64FS 4eS b co-xO
4e6 ~
487 ; ~ ~d '0e' - 'Of' 4e8 ;
0473 D9 489 cmor a,flOOlb 0474 OE 490 t~-tp zf 047S 649E 491 0 coa900 ; rcad d-vicr data 492 ;
0477 DA 493 cm~r a,tlOlOb 0478 OE 494 t-stp zf 0479 64A4 49S b co-aOO ; di~Dl~y charactcr at sp eificd 496 ; oosition 047D D~ 497 cm~r a,flOllb 047C 0E 498 t~tp zf . 109 CP/h TLCS-47 ~SSE~8LER V2 2 P~6E S

LOC 08J LI~E SOURCE ~r~,~ _ , 047D 64ED 499 b co-~OO ~ condition~l pol1 ~00 ~
047F De SO1 cmor ,tlOOOb RO~ P~GE ~O lB
04B0 65D9 W2 b cor- ; not imoli-d comm~
nd 503 ~

505 ~ in-or~ ch~r~ct r on d-vic- di~ol~y S07 ~
04e2 3C37 50e ld ~,ld~tll 04e4 3F35 SO9 t ~,ld~t~1 0486 3c3e 510 ld ,ld-tl2 04Be 3F36 511 ~t ,ld~t~2 5lZ ~
04e~ 3Cel S13 ld ~,d~t-Oh 048C 30 S14 xch ~,h 04eD 3C80 51S ld ~,d-t~Ol 04eF 31 516 xch ~,l 517 ~
0490 2310 518 c-ll l dd 519 ~
0492 30 520 xch ,h 0493 3F3e 521 t ~,ld~tlZ
522 ;
049S 31 523 xch ,l 0496 3F37 524 ~t ~,ld~tll 525 ~
049e 2350 526 c-ll ~l~ h 527 ~
049~ 6SD9 52e - b coro 049C 6SD9 S29 ~ cor-S32 ~ rr d dovic- d~t~

~ 534 ~
049E 2050 53S co-900l c-ll rkc-536 ~
04~0 65D9 537 b co _ 04~2 65D9 538 b cor-~39 ;
540 ~
541 ; di~ol~y ch~r~ct r ~t P cifi d po~ition ~42 ;
543 ;
04~4 3ca3 S44 Co-~OOI ld ~,d~t~lh 04~6 30 S45 xch ~,h 04~7 3C82 546 ld ~,d-t~l 04a9 31 547 xch ~,l s4e ~
04~ 2310 549 c~ll l dd ~ 550 ~

CP/~ TLCS-47 ~SSE~BLER V2 2 P~GE 6 LOC OBJ LINE souRoe ~ ~
04~C 3C80 5S1 ld a,dat-Ol 04~E 3833 5S2 nd a,SOOllb 553 ~
04aO 5C 5~4 e--t a~O
0481 64CC 555 b co-alO ; l~d changc ~56 ~
04a3 30 557 xch a,h 0484 3F36 S58 ~t ,ldat~2 5~9 l 04a6 31 560 xch a,l 04B7 3F3S 561 st a,ldatml 562 ~
04~9 3C81 S63 ld ~,dataOh 048S 3B38 564 and ~,SlOOOb 04~D OE 56-~ t- tp ~r 048E 64DF 566 b co--oe 56a ~ ~5d ~l~-hing RO~ P~GE NO-19 04C0 3C33 570 ld a,disolw 04C2 3821 S71 or a,SOOOlb 04C4 3F33 572 ~t ~,di~plw 04C6 23 0 574 co--OI call ~la h 57~ 1 04Ce 6SD9 576 b cor~
04CA 65D9 577 b cor 579 ~
04CC 30 5eo co-alO~ xch ~,h 04CD 3F3e 581 ~t ~,ldatl2 582 ~
04CF 31 583 xch a,l 04D0 3F37 5B4 st a,ld-tll ; l-d chango 04D2 3C81 SB6 ld a,dataOh 04D4 3B3B se7 nd ~,SlOOOb 04D6 OE SBB t-~t D 2 f 04D7 ~6 5B9 b cocaO3 590 ~
S91 ~ l~d la-hing 592 ~
04DB 3C33 S93 ld ~,di-plw 04D~ 3B2 594 or ~,SOOlOb 04DC 3F33 59~ st ~,di~Dlw ~96 ;
04DE B6 S97 b co -O1 S9B ~
04DF 3C33 599 co--02~ ld ~ di-olw 04E1 383E 600 ~nd ~,SlllOb 04E3 3F33 601 st ~,disolw ; msd st-ady 602 ~

CP/~ TLCS-47 ASSE~SLER V2 2 LOC 08J Ll~E SOURCE ~IAI~ _ 04ES e6 603 b co--Ol 604 ~
04E6 3C33 60S co--O3 ld a,di~plw 04E8 383D 606 and a,tll01b 04EA 3F33 607 st a,divplw ~ l-d st~dy 04EC 86 609 b co--Ol 610 ~

612 I condltlon-l poll 6~3 1 6~4 1 04ED 39SF , 61S co-bOO clr s~rvrc,l 04EF 20S0 617 c~ll rkc~

04F1 6 D9 619 b cor~
04F3 6SD9 620 b core 62Z ~
- 6Z3 I c- ~d '00~ - '07' 62S ~
04F~ Dl 6Z6 CO - X05 cmDr a,tOOOlb 04F6 OE 6Z7 t-~tp zf 04F7 6S13 6Z8 b co-100 1 indlc-tor pow-r c ontrol 6Z9 ~
04F9 D2 630 cmpr ~,tOOlOb 04FA OE 631 t-~tp 2 f 04F8 6534 63Z b co-200 ; indic~tor mod- sc l ct 633 ;
04FD D3 634 cmpr a,t0011b 04FE OE 63~ t--tp zf 04FF 6S4E 636 b co-300 ; d-vic- input cont rol RO~ PAGE ~0 20 ~
OSOl D4 638 cmpr a,tO100b OS02 OE 639 tc~tp zf 0S03 6S63 640 b cor400 ; d vic- output con trol 0SOS DS 642 cmpr a,tOlOlb OS06 OE 643 t-~tp zf 0S07 6S92 644 b co-SOO ; pow-r relay contr ol 64~ ;
0S09,D6 C46 cmpr a,tOllOb OSOA OE 647 e fftp z-OSOB 6SA2 64e b co~600 ; cl-~r d-vic- disp l~y 050D D7 6SO cmpr a,tOlllb OS0E 0E 6Sl te-t D Z f 050F 6SC4 6S2 b co-700 ; divice display co ntrol CP/~ TLCS-47 ~ssE~sLER vz Z
PaGE 8 LOC OBJ LSNE SOURCE S~ NT
5~ ~ r--d dcvic- t-tu-6~6 ~
6~7 ~
O~ll 39~2 6~8 t--t ~pu- 1,2 0~13 6~Ds 6ss D corc 660 ;
661 ~
0~15 3962 ~ rd OOO~ clr vpu-1,2 663 ~
0~17 3ssF 664 clr rvre,l 66~ ~
O~l9 6~2 666 b co-600 -e 669 ~
c7o ~ ind~c-tor pow r control 672 l 0~18 3ceo 673 co-lOO~ ld ,d~t~Ol O~lD OE 674 t-~tp zf 0~1E ~8 675 0 co-llO
676 ;
677 ~ indic~tor 'on' 678 ~
O~lF 3C34 679 ld ~.di-piw 0~21 3e æ 6eo or ~,SOOlOb 0~23 3F34 6el .t ~,di~piw 6ez ~
O~Z~ 3903 6e3 ~ t pu-h,O ; indic~tor currcnt ly on 6e4 l o~z7 23~0 6e~ co-l20s c~ h 6e6 T
0~29 6sDs 6e7 b eor 6ee ~
689 ~ indic-tor 'o~' 690 ~
0~28 3C34 691 eo llO~ ld ,di-piw 0~2D 3e3D 692 ~nd ~,S1101b 0~2F 3F34 693 ~t ~,di-piw 694 ~
0531 3943 695 clr pu-h,O ~ indic-tor curr~nt ly o-~
696 ~
0~33 ~7 697 D co-l~O
6se ;
699 ;
700 ; indic-tor mod- q-l-ct 702 ~
0~34 3ceo 703 co-200 ld ~,d-t~Ol 0~36 OE 704 t--tp 2 ~
0~37 6~4~ 7o~ D co-210 706 ~
0~39 3C34 7o7 ld ~,di~oiw 0~38 3e21 70e or ~,S0001b 0~3D 3F34 7o9 ~t ~,di~oiw ~ 338044 CP/~ TLCS-47 ~SSE~BLER v2 2 P~GE 9 LOC~ OBJ LINE SOURCE ST~TE~ENT
710 ~
0~3F 3913 711 -t ~pu h,l 7 indic~tor curr~nt ly fl~ hlng ROh PPGE NO 21 ~
OS41 2350 713 co-2201 c-ll fl~-h OS43 65D9 71S b cor-OS45 3C34 717 co~210t ld ~,dl~plw OS47 383E 718 ' ~nd ~,SlllOb 0549 3F34 719 ~t ~,dl~oiw 720 ~
OS4B 3953 7Zl clr ~pu~h,l 7 indic~tor currntl y non-~l-~hing 7æ ~
054D 81 723 b co-228 7Z5 ~
7Z6 7 dovic- input control 728 ~
OS4E 3C81 7Z9 co-3001 ld ~,d-t-Oh OS50 5F 730 t--t ~,3 0551 94 731 b co 310 0552 65D9 733 b corn 0554 36eo 73S co-310~ diclr il,h'OO
0556 40 736 ld ~,Sh'O
05S7 3ReC 737 out ~,%oplc 738 ~
05S9 3935 739 ~ t ~puv~1,3 740 ;
055B 3B46 741 clr %opO6,0 742 ;
05SD 3B36 743 ~ot %opO6,3 ; port ~-t 744 ;
055F 3640 745 ~lclr il,h'OO
746 ;
0561 65D9 747 D cor-748 ;
749 ;
7SO ; d-vic- output control 7Sl ;
7S2 ;
0563 3C81 7~3 co-400 ld ~,d-t~Oh OS6S 5F 7S4 t~t ~,3 0566 6S8S 755 b co~411 ; vlf oueDu t di~-bl-7S6 ;
OS68 39SS 7S7 clr ~puvvl,l ; k~y bo~rd n~bl-~ 7se ;
056~ 3C80 7S9 CoQ410 ld ~,d~t~01 OS6C ~C 760 tQ~t ~,0 056D 38 761 D co~420 ~ 338044 cp/~ TLCS-47 ~ssE~sLER VZ.2 P~6E lO

Loc osJ LlNE SOUROE STATE~ENT
762 l OS6E 36Aa 763 diclr il,lOlOlOb 0570 47 764 ld a,~Olllb 0571 3FlC 76~ st ~,-irb 0573 13 766 ~ch ~,-ir 0574 366A 767 iclr il,lOlOlOb s r~mot- eo ntrol n~bl-76e ;
OS76 6sDs 769 b cor-770 ~
0578 36AA 771 co-420~ diclr il,lOlOlOb 057A 46 772 ld ~,~OllOb os7a 3FlC 773 t ,-irb 057D 13 774 ~ch ~-ir 057E 40 775 ld ~,SOOOOb os7F 3AsD 776 out a,%opld ; tim-r Z s top RO~ PAGE NO zz *
0581 366A 777 iclr il,lOlOlOb ; r-mot- co ntrol dis~bl-778 ~
ose3 6sDs 779 b cor-780 ~
0585 36AA 781 co-411~ diclr il,lOlOlOb 0587 3915 782 ~ot spuvsl,1 ; k-y bo~rd di~bl-0589 41 763 ld ~,fh'1 ossA 3F23 784 st a~pu-k 05sc 3FZ4 785 st a,spucp 786 ~
O sE Z050 787 c-ll rkc-788 ~
0590 6s7s 789 b co~4ZO
790;
791 ;
792 ; pow r r-l~y control 793 ;
794 s~
ossz 3cso 795 co-S40J ld ,d~t~Ol 0594 OE 796 t--tp z-0595 9c 797 b co- W l 798 r 0596 3854 799 clr ~oD04,1 ; powcr r-lay on 800 l 0598 3s3z 801 srt SDU - 1, 8 ; powcr r-lay curre ntly on 802 ;
05sQ 65Ds eo3 b cor 804 s 059C 3D14 Bos co-SOls s-t ~ovO4,1 ; pow-r relay off eo6 ~
OSsE 3s7z eo7 clr spu~l,3 ; powor relay curre ntly of~
eos ;
05A0 65Ds 809 b cor-10 ;
ell ;
elz ; cl-~r d-~ice display el3 ;

CP~ TLCS-47 ASSE~8CER V2 2 LOC OBJ LINE SOURCE ~1~l t. ._N I

05A2 4F 81S co-600~ ld .Sh'f 05~3 3F3S 816 st ,ld-tml o~a5 3F37 el7 ~t ,ld-tll 05A7 3F39 81B t ,ld--01 05a9 3F3B 819 st ~,lda~ll 820 ;
05a8 3C36 821 ld a,ld-tmZ
05AD 3827 eæ or ~,tOlllb 05aF 3F36 e23 ~t ,ld-tm2 824 ~
05B1 3C38 825 ld a,ld-tl2 05B3 3827 e26 or a,SOlllb OSB5 3F38 827 t ,ld-t12 05B7 3c3a 829 ld ,ld-~m2 05B9 3827 830 or a,tOlIlb 05BB 3F3A e31 st a,ld- m2 832 ;
OSBD 3C3C 833 ld ,lda~12 05BF 3827 834 or a, ro 1 1 lb RO~ PAGE NO 23 OSC1 3F3C e35 st a,ld--12 836 ~
05C3 99 837 b cor-83e ~
839 ;
e40 ; d-vic- displ-y control 841 ~
e42 ;
OSC4 3C80 e43 co-7001 ld a,d-taOl 05C6 OE 844 t-~tp z-OSC7 92 845 b co~701 ; display st-ady 846 ~
05C8 3C33 847 ld ,di-plw OSCA 3823 84e or a,SOOllb 05CC 3F33 849 ~t a,displw ; display flashing 05CE 2350 851 co-7031 c-ll flash e~2 ;
05D0 99 853 b cor-05D1 99 854 b corc es5 ;
05D2 3C33 856 co-701 ld a~diSDlw 05D4 383C 857 nd ~,tll00b 05D6 3F33 8S8 st a,displw ; display st-ady esg ;
05D8 8E 860 b co-703 861 ;

863 ~ r-turn 864 ;
86~ ;

._ CP/~ TLCS-47 ~SSE~BLER V2. 2 PqGE 1 2 LOC OBJ LINE SOURCE STPiTElllENT
OSD9 3974 866 cor-~ clr ~puvdm;3 ; clc~r 'comm~nd c~
cut- ' e67, OSD8 6453 868 b m i4 e69 ;
e70 ;
871 ;
872 ~ k~y~c~n OSDD 399S 87S m i3 e - .t .
OSDF ~4 876 b m i30 OSEO 396S 878 clr puv-1,2 OSEZ 6457 8eo b m~i~

OSE4 Z100 88Z m~i30 c-ll k y-8e3 ~
OSE6 396S 884 clr ~puv~l,2 8e~ ;
OSE8 6457 886 b m~i~
887 ;
8e8 nd ~SSE1l18LY COI~IPLETE, O PROGR~I ERROR(S) t 1 338044 cpx~ TLCS-47 ~ssE~aLER vz 2 P~GE 1 3 sy~soL T~BLE
COElOo 0513 COEI10 OS2~ COE120 0527 COE200 0~34 COE210 0545 COE z 0 0541 COE300 054E COE310 05S4 COE400 0563 * COE410 os6A COE411 osss COE4Z0 0578 COE500 0592 coEsol 059C COE600 05~2 COE700 osc4 COE701 osD2 COE703 oscE wEsoo o4sE COE~OO 04A4 coEaol 04C6 COE~02 04DF COE~03 04E6 COEA10 04CC
COEBOO 04ED COEXo 04F5 * CO~fflD 0013 com~RH 0015 CO~tL 0014 CORE osDs D~TROH 0081 D~T~OL 0080 DqTP, 1 H 0083 D~T~lL ooez * D~TP2H 0085 * DPT~2L ooe4 * D~T~3H 0087 * D~T~3L 0086 * DPTP4H 0089 * DPTP4L ooes * D~T~CT 0200 * DCH OOFE * DCL OOFC * DSSPP, 0032 * DISPH 003~ DISPIW 0034 * DISPL 0030 DISPLW 0033 EIRB OOlC FLP;SH 0350 * INCOTH oosc ~ INCOTL ooe~
I NCOT~ oosa * KEST ooæ KESTOH 0043 KESTOL 004Z t * KESTlH 004S ~ KESTlL 0044 * KESTZH 0047 * KEST2L 0046 * KEST3H 0049 ~ KEST3L 004e * KEST4H 004D ~ KEST4L 004~
* KEsTsH 004D * KEsTsL 004C * KESTaH OOZl * KESTaL 0020 * KEYND 0029 * KEYNN 002~ KEYOD 002B * KEYON 002C
KEYS 0100 * KEysa 02SO * KEYSC OOoE * KEYT 0300 * KEYT3 OOCB * LCICOT OOOD LD~ al 003a LDFtSL2 003C
LDftS~l 0039 LD~s~2 003ft LDFtTLl 0037 LD~TLZ 003e LDFtT~l 003S LD~T~2 0036 * LDISP oaoo LECOTH ooeF
LECOTL ooeD LECOT~ ooeE LEDD 0310 * L I OVF 1 0600 * LIOVF2 0000 * LRE~O OEOO * LVLFEX ocoo ~PI0 03ES
~4I00 044B ~I 1 044D fflIZ 0469 ~ ~FtIZO 04SO
~I3 osDD ~I30 0 E4 ~RI4 0453 rRIs 0457 ~I61 0460 fflI6Z 0463 * fflIN 03EO * OVER2~ 0072 * OVERZH 0071 * OvERa oo7o * OVER~l 0012 * OVERHl OOlL
* OVERLl OOlO * P~RITT oooc * PftRITY OOOB ~ RDSOOO 0515 * RE~DC 002e* RE~DN 0027 * RE~DO 0060 * RE~Dl 006l * RE~DZ 0062* RE~D3 0063 * RE~D4 0064 * RE~DS 0065 * RE~D6 0066* RE~D7 0067 * RE~OFt 006~ * RE~OH 0069 * RE~IOL 0068 RKCE 0050 * RNH 0063 * RNL 006D
RN~ 006CRWRPCH 0oc~ * RWRPCL ooce * RWRPC~ ooc9 SERVRC OOOF spucp 0024 SPUSH 0003 SPUSK 0023 spusL 0002* SPUTT 0018 SPUVD~ 0004 * SPUVSH o0oo spuvsL ooo~ spuvu~ OOOl spw OOFF ~ SPWB 0oc7 * T~BLE oooo * TI~R2H o0Fa * TI~R2L ooFe * TI~R2~ ooFs TI~RHN OOF6 * TI~RHO oola TI~RLN OOF4 ~ TI~RLO OOl9 TI~R~N ooFs * TI~R~O OOl~ * VLFC ooo~ * VLFEC 0016 * VLFRB oo09 * VL~I~ o00e * VLFTH ooo7 * VLFTL 0006 * VLFXft 0052 * VLFXH 005l * VLFXL 0050 * WPRPCL 00C4 * W~RPC~ oocs { WRlTEH 0026 * WRITEN 0025 DEFINED 171 USER SY~BOL(S) _ CP/~ TLCS-47 ~SSE~BLER VZ.2 PRGE

LOC OBJ L}NE SOUR OE ~~ T
1 1 ;
2 ~ 7.19B3. ;
3 ~ Liov-l.a-n V1.0 ~ ~ (T~P4740P) 6 ~ vlf communic-tion routine 7 ~ ;
~ ~ ;
9 ~ ;

noli~t ~ t RO~ PP6E Na. O
0010 297 or~ h'O10 ~ routin- tabl~

299 ~
0010 6682 300 b rO ~ ~tart bit d-tect 301 ~
0012 66FC 302 b rri ~ ~i bit d-t ct 303 ~
0014 6719 304 b rc-; 3d~ d-tcct 30~ ~
0016 673E 306 b rcf; c~ ~d d-t-ct 30~ ~
0018 67D4 308 b rcp ; p-rity in 001~ 67EE 310 b tra ; 'ack' or ~nack~
311 ~
OOlC 67FR 312 b rc~tn ; ~top bit in 313 ;
OOlE 6834 314 b r~td ; damy to rc~tab 31~ ;
ooeo 6838 316 b rc~t-b ; ~top bit in 317 ~
ooæ 6841 318 b rdd ~; d-ta in 319 ~
0024 6871 320 b rdp ; parity in 3Zl ;
0026 687F 322 b td-ck ; 'ack' or 'nack' 323 ;
0028 6a8~ 324 b rd-~t 32~ ;
326 ;7;1 327 ~
002P 6BC2 328 b tO ; tr-n~mit 329 ~

~- ~ 338044 CP~h TLCS-47 ~- FR V2. 2 pCGE 2 LOC OBJ LINE SOUROE ~ t~
002C 6eEs 330 b tdl ; d-t~ out 331 ~
002E 6eFl 33Z b trnl ~ d-t ct 'mi' 333 ~
0030 5909 334 b rd~my ~ d~my to rc-0032 5912 336 b tdo ; d-ta out 337 ;
0034 6930 338 b tp - ; p rity out 339 ~
0036 6s3E 340 b tlci ; 'lci' bit out 341 ~
003e 6944 342 b rt~ck ~ r c-iv- 'ack' 343 l ~
003~ 6se3 344 b t-t ; out 'stoo' 34~ ~
003C 6ses 346 b r t ; r c-iv- 'stoP' 347 ~
34e ~ ;t~;;;~;;;;;;~;;~;;;~;;
349 ;
RO~ Pa OE NO.Z~
0600 350 org h~ 600 35l l 352 ~ ;
353 ~ r~gist r push 354 ;
0600 3806 3ss ~-t %opO6,0 0602 3F12 356 iovfl t ~e ~. ov~r~1 ;
0604 2910 357 xch hl,ov rll ` 358 ;
359 ; tim-rl start 360 ;
0606 3cls 361 ld a~timrho 060e 3FF6 362 t a,timrhn 060a 3ClA 363 ld a, e imrmo 060C 3FFs 364 ~t a,timrmn 060E 3cls 36 ld ~,timrlo 0610 3FF4 366 ~t a,timrln 367 ;
36e ; ch ck mod-369 ; ( norm~l or not ) 370 ;
0612 3seo 371 t~t ~puv-h,O
0614 Bs 372 o vlfOO1 ;routin- for abnorm 373 ; ; mo~
.

374 ;
375 ; ch~ck mod-376 ; ( transmit or not ) 377 ;
0615 3sDo 37B t-stp ouvsh,1 0617 ~3 379 b vlfO10;routin- for transm it eo ; - mo~
18 3BC0 381 t-~tD ~ipOO,O

CP/~ TLCS-47 ~SSE~8LER V2 Z
P~6E 3 LOC OSJ L~NE SOURCE ~1~l~ _~T
061~ 9E 382 b vlflOO ;d-t- ~'1' 383 ~
0613 3979 384 clr vlfrb,3 061D ~D 38~ b v1-2W Tto warp 386 ~
061E 2F13 387 vl~100~ ~dd p-rity,th'l ;p~rity count-r inc 0620 3939 388 ~et vl-rb,3 06Z2 ~D 389 b vlf200 ;to warp 390 ~
391 ;
392 I d-t- out ~ vlfO10 ) 393 ;
OSZ3 3988 394 vl~OlOt t--t vlftb,O
06ZS aB 39~ b vlfOll 062S ZFlC 397 ~dd p-ritt,th'l ; parity count 39~ ~
oeze 3376 399 clr SooO6,3 ; vlf outDut d~ta ' 1' 062~ AD 400 b vlf200 ~ to w-rp 401 ~
06Z~ 3a36 402 vlfOll~ t ~o~06,3 ; vlf output d~t~ ' O~
403 ~
;
4a~ ; w rp routin- ( vlf200 ) ~06 ~ ;
062D 3CFF 407 V1~2001 ld -.~pw 062F 3FC7 W8 t ~,spwb 409 ~
0631 40 410 ld ,~h'O
0632 3FFF 411 st .-pw ; pw ch~nging 0634 Z~ 413 r t ; w-rp 414 ~
416 ; routin- or ~bnorm~l mod- ;
417 ~ ~ vlrO W ) 41e ;
063~ 39D4 419 vlf001s t-~tp ~puvdm~l ; 1200 bit time cou nting ?
0637 6647 420 b vlfO02 ; br~nch on ' y-s' 421 ;
0639 39E4 4Z2 t-~tp puvdm,Z 3 lOs-c couting ?
0633 66S4 423 b vlfO03 ; br~nch on 'y-s' 4Z4 ;
063D 39F1 4ZS t-~tp Duvum,3 ; framing error ?
063F PE 4Z6 b vlfO04 ; br~nch on 'yes' 4Z7 ;
RO~ P~GE NO 2S

0640 3904 428 vl~OO~I -t ~puvdm,O ; cry n-bl- on 064Z 40 429 ld ~,rh'O
0643 3~8C 430 out ~,~oolc ; timer stoD
064~ 66~D 431 b vlf300 ; to return routine 432 ~
433 ; lZOO bit count d 121 t 338~44 CP/IlI TLCS--47 ~5~Ftlal FR VZ. 2 P~GE 4 LOC 08J LINE SOUROE STATEI'IENT
434 ~
0647 3954 43~5 v1~0021 clr Duvdm,1 ~ cl----r ' 1200 bit c ounting' 0649 3941 436 clr puvum,O ~ cle~r 'previou~
437 ~ ;c~ ,r.d n----d~ d ~t~' 064E3 3951 438 clr ~puvum~l ~ cl----r 'pr-viouv 439 1 ~ comm--nd rvquir~
d~t~
064D 3921 ~0 t Duvum,2 ; 'comm~nd inhibit' on 064F 3900 441 ~t ~puv h,O ~ r t norm~l mod--06~1 3950 442 clr puv h,1 ~ ~--t r c--iv-- mod-- 443 ~
0653 eo 444 b vl-OO~ ~ br~nch on 44~ t cry n~ble 446 ~
447 ~ l O-- c coune d ~48 ~
0654 3931 449 v1~003t --t DUVum~ 3 ~ ot fr~ming crror 0656 3964 450 clr vpuvdm, 2 ; cl----r '10~c co m ting' 4~
06~:8 3C23 4~52 ld ~, ~pu~k 065A 3F24 453 ~t , pucp 454 ~
065C 20S0 45:i c--l l rkc--065E 4F 457 ld , th'~
065F 3FF6 458 ~t , tlmrhn 0661 47 459 ld , th'7 066Z 3FF5 KO t ~, timrnn 0664 4C 461 ld ~, fh~ c 0665 3FF4 462 ~t ~, ti~rln 463 ~
0667 44 464 ld ~, rh' 4 0668 3A8C 465 out ~,Xoplc ; llbit tim r ~etti ng -. 466;
066A 397~i 467 clr ~puv~l, 3 ; 1' rt intr en~bl--468 ~
066C 66AD 469 b v1~300 ; to r--turn routine 470 ~
471 ~ fr-ming rror bit on 066E 3C1~ 47Z vlfO041 ld ~ rputt 0670 DO 473 cmpr ~,Sh'O
0671 66A3 474 b v 10040 475 ~
0673 3C~3 476 ld ~, ro 0675 DF 477 cmDr ~, fh' ~
0676 6689 47e b v 10060 479;
0678 3880 480 t--vt XiDOO~O
067~ 6698 481 b v 10050 482 ~
067C 40 4e3 ld ~, fh' O
067D 3F~53 484 ~t ~, fr~--485;
067F 4F 4E36 ld ~,rh'f ROIII PAGE NO. 26 CP/~ TLCS-47 ASSE~8LER V2 Z
pa~E 5 LOC C8~ LlNE SOURCE ~l~lc~-~l 06eo 3FF6 4e7 ~t ~,timrhn 06e2 47 4es ld ~,rh~7 06e3 3FFs 489 ~t ,ti~rmn 06es 4C 490 ld ,rh'c 0686 3FF4 491 ~t .timrln ~92 ~
06se AD 493 b vlr300 494 ~
0689 3seo 495 v10060~ t-~t ~ipOO,O
06es se 496 b v10050 497 ~
06sc 3971 4se clr ~puvum,3 ; el-~r 'fram~ng r ror~
06sE 3921 499 ~ t ~puvum,Z ~ ~-t 'comm~nd inh i bit' 0690 3951 wo clr ~puvum,l ~ cl--r 'prcviou~ c o _ nd - w 1 ~ ~ rq uir-~ an ~n~w r' S02 l clr ~puvum,O ; el--r 'pr vious c omm~nd 503 ~ ; n-~d~ ~t~' 0692 3950 S04 clr ~puv~h,l ~ ~-t r cmivr modc 0694 3900 S05 ~ t puv-h,O - ~ ~ot norm~l modc 506 ;
0696 6640 507 b vltoos ~ to '~-t cry en~bl ~50~ ~
06se 4F so9 v100501 ld ~,~h~f 0699 3FF6 S10 ~t ~,timrhn 0698 3Ffs Sll ~t a,ti~rnn S12 ~
o6sD 3Fs3 S13 ~t a,fr~n ~14 ~
06sF 4~ S15 ld ~,~h~-06A0 3FF4 S16 ~t a,timrln ~17 ~
06a2 AD S18 b v1~300 ~19 ~
06A3 40 520 v10040~ 1 d ,~h'O
06a4 3Fls S21 ~t ~,~puet 522 ;
06A6 3sco S23 t-~tp %ipOO,O
o6Ae AD SZ4 b v 1-300 525 ~
o6As 4F S26 ld ,~h~
o6Aa 3Fs3 S27 ~t ~,fr~mo 52~ ;
06AC se S29 b v 10050 530 ;
53~ ; ;
S32 ; r-turn routin- ~ v 1-300 ~ ;
S33 ~ ;
06AD 3C12 S34 vl~300l ld ,ov-r-l 06AF 2910 S35 ~Ch hl,ov rll ; pop rcgi~tcr 536 ;
06~ 1 2~ S37 r e s3s ;
;
S40 ; RO routin--cp/~ TLCS-47 ~ssE~sLER V2 Z
P~GE 5 LOC asJ LlNE SOURCE 61~1~
_ 541 ; ( in ~t-rt bit ~ ;
s4z ~ ~
S43 ~ .t-rt 3it T
54~ ~
0682 3sco 545 rOt t-~tp ~ipOO,O
oes4 66C2 S46 b rOOOOO ; it w-r not '-t~rt 547 ;
06a6 3935 s4e ~ t rDuv~l~ 3 ~ xt rn~l intr ; inhibit 550 ~
oe8e 3961 S51 clr puvum,Z ~ cl--r 'comm~nd in hlbit' 5~2 ~ ~
oeB~ 3944 553 clr puvdm,O ; cl--r 'cry n~bl-06sc 3836 554 ~-t ~opO6,3 ; port ~t 5~5;
S56 ; n xt intr ~57 ~
oe8E Cl S58 ld h,rh'l o6sF EZ 559 ld 1,2h'2 ~ to Rmi r~utino ~60 ~
RO~ P~GE NO.Z7 06C0 41 S61 ld ~,~h'l ; n~xt intr 1 bit tim~
s6z ~
S63 ~ p ~64 ~
oecl z~ 565 rOOOOlt r t ~66 ~
567 ~ ~t~rt bit not found s6e ~
06C2 3984 559 rOOOOO~ t-~t ~puvdm,O
06C4 B9 570 b rO1000 ; cry n~bl- ?
571 l 06cs 40 S72 ld ~,~h'O
oec6 3Pec S73 out ~oplc ; tim rl ~tcp 574 ~
06cs 81 575 b rOOOOl ~ to r- W--D
576 ~
06cs 3940 S77 rO10001 clr ~puv~h,O ; to ~bnorm~l mod-578 ;
06cs 3994 S79 t--t puvdm,l 580 ;
06CD ~ 581 b rOlllO ; mu~t d-tcct 'cry n~l-' 582 ~
se3 ~
sB4 ~ lZOO bit counting ses ~
06CE 3csc se6 rOllOOt ld ~,incoth 06D0 3FF6 se7 ~t ~,ti~rhn oe DZ 3cas see ld ~,incotm 06D4 3FFs ses .t ~,timrmn 06D6 3cs~ 590 ld ~,incotl o6De 3FF4 591 ~t ~,timrln ~92 :

~ 338044 CP/~ TLCS-47 ~ssE~sLER V2.2 P~GE 7 LOC OBJ LINE SOUROE ~~
o6Da 48 ~93 ld ~,~h' e 06DB 3~C ~94 out a,~oplc ~9~ ~
06DD 3B36 ~96 ot XapO6, 3 ;
e ; r turn ~99;
06DF 3CC7 600 rOllll ld ~,-o~b 06E1 3FFF 601 t a,-pw 602 ~
06E3 3C12 603 ld ~ov-r~l 06E~ 2910 604 ~eh hl,ov-rll 60~ l 06E7 3846 606 elr #opO6~0 607 ;
o6Es 2~ 608 r.e 609 ~
06E~ 3cec 610 rOlllO ld ~,ineoth 06EC 3FF6 611 t ~,timrhn 06EE 3ceD 612 ld ~ ~,incotm 06F0 3FF~ 613 st- ~,tl~rnn 06F2 3cs~ 614 ld a,incotl 06F4 3FF4 61~ st - , e i rln 616 ~
06F6 44 617 ld ~,~h'4 06F7 3~ec 61a out ~,#ople 619 ~
o6Fs 3B36 620 t XooO6,3 621 ~
06FB sF 622 b rOllll . 623 ~
62~ ;;;;;;;;;;;;;;~;;;;;;;
626 ;
627 ;
6ze ; Rmi routinc 629 ; ( in mi bit ~ ;
630 ;
631 ;
632 ~
06FC 3sFs 633 rmi t--tp vlfr~,3 06FE 670F 634 b rmiOOO ; ~dat~ from ECU
63~ ;
636 ; ~ ~ comm-nd' from ECU
637 ;
RO~ P~GE NO 2e 0700 Cl 63a ld h,th'l 0701 E4 639 ld 1,~h'4 ; to Rca routlne 640 ;
0702 40 641 ld ~,Zh'O
0703 3F16 642 st ~,vlf c ; vlf rror counter cl--r 643 ;
o7o~ 3941 644 clr spuvum,O ; 'prrvious comm~n~

CP/~ TLCS-47 ~SSE~8LER V2 2 PaGE 8 LOC 08J LINE SOURCE ~~
64~ ~ n d~ dat~' 0707 39~1 646 clr vpuvum,1 1 'prrviou~ - ld 647 ~ r-quirr~ ~n ~n~
w r' 648 t-p riey ~ VLF countor 649 ;cl-ar 6 0 ~
0709 2D08 651 rmiOO1~ ~t Sh10,p rity 0708 2D0~ 6~2 ~t Sh'O,vl-c ; parity count-r 653 ; ~ VLF count-r cl ar 654 ;
6 ~ ~ n-xt intr 6 6 ~ - `
070D 41 657 ld a,Sh ~ ~ n-xt intr lbit t i~

6~9 660 ~
070E 2~ 661 rmiO02s r t 7 ~ ~p 662 ;
663 ; 'd-t- ' from ECU

070F 3981 66~ rmiOOO e-.t ~puvum,O
0711 9~ 666 b rmiO03 ; not n d data 667 ~
0712 C2 668 ld h,S~h~2 0713 E2 669 ld l~Sh~2 ; to Rdd routin-670 ~
0714 89 671 b rmiOO1 ; to o~rity elcar 672 ~
673 ~ not n- d 'd~t~' 674 ~
071~ C1 67~ rmiO03~ ld h,Sh'1 0716 OE 676 ld l,Sh'- ~ to R~t~ routinc 677 ~
0717 43 678 ld ~,~h~3 ; ncxt intr 9bit t im~
679 ~
0718 8E 6BO b rmiO02 ; to r _w~rp 681 ~
682 ~;;;;;;;;;;~;;l;;;;;;;;;;;;l;;~;;;J5;;;
6e3 ~;~;;;;5~J;JJ;;;;;J;;;;;;;JJ;;;;J;;;;;;;;
6e4 ;
6e~ ; ;
686 J Rc~ routin- ;
687 ; ( in ~ ~d rrc-iv- ) 6e8 ;
689 $
0719 ZF1~ 690 rc-s ~dd vlfc,Sh'1 ; vlf count-r 691 ; i~ t 0718 2E3~ 692 cm~r vlf~,Sh'3 071D 84 693 b rc-OOO ; vlf~ () 3 694 ~
69~ ~h ck 696 ;
07~E 3C09 697 ld ~,vlfrb 0720 07 698 rorc 0721 3e37 699 ~nd ~,Sh'7 CP/~ TLCS-47 RSSE~LER vZ 2 LOC 03J LINE 50URCE ~~ r 07Z3 3F13 700 ~t a,co~ad ~ add _ in 701 ;
0725 3AZ0 70Z in Sip~0,- -07Z7 07 703 rorc 07Z8 07 704 rorc 0729 3833 705 nd ~,Sh'3 0723 3802 706 add ,Sh'2 ~ SDU - - h _~
707 ;
072D 3E13 708 cmpr ,com~ad 072F 8a 709 b ro-001 ; addr-s- ch-ck ~6 710 ;
711 ~ n xt intr 712 ~ m-teh d ~ -713 ~
0730 C1 714 ld h~Sh'l 0731 E6 715 ld l,Sh'6 ~ to Rgf routin-716 ~
073Z 41 717 rc-002~ ld ~,Sh'1 ~ next intr lbit t ime 71~ 1 7Z0 ~
0733 2R 7Z1 rc-003~ r t ; r _ ~arp 7æ, 7Z3 ~ hi~t 724 ~
0734 3C39 7Z~ rcaO00l ld ,vlfrb 0736 07 726 rorc a ~ shi~t 0737 3F09 7Z7 st a,vl~rb 0739 a2 7Z9 b roaO02 ; n xt intr lbit t im~
730 ~
731 ; next intr 732 ~ mi~ m-tch d 733 ~
073a C1 734 rc-001~ ld h,Sh'1 073B EE 735 ld l,Sh'- ; to Rstd 736 ~
073C 42 737 ld ~,Sh'Z ; n-xt intr 738 ~ 6 bit ti~e 73g ~
073D 33 740 b rc~003 ; ~ ~ D
741 ~
742 ;;~;;~;;l;;;;;;;;~;;;;;;;;;~;;;;;;;;;;;S;
744 ;
745 ;
746 ; R~ routin-747 ; ( in c~ -nd r-c~ive ~ ;
74~ ; ;
749 ~
750 t d-t~ ~ct 7~1 ;
073E ZFlR 752 r~f add vlf~,Sh'1 ; VLF count-r 753 ; i~_ __ t 1 33804~

CP/h TLCS-47 RSSE~9UER VZ 2 bOC 08J LlNE~ SOURCE
RO~ P~GE NO 29 0740 cE~R 754 cmpr vlfc,~h'7 0742 OE 755 t-vtp 2f 0743 eF 7X b rcfOOO ~ br-nch on 757 $ comm~rd hi 0744 ZE8~ 75B cmpr vlfc,~h' e 0746 OE 759 t-~tp 2f 0747 94 760 b rcfOO1 ; br~neh on 761 ~ re~d function 074e 3C09 763 ld ~,vlfrb 074R 07 764 rorc ~
0748 3F09 765 ~t ~,vlfrb S d~t~ ~ct 766 ~
767 ~ n-xt intr 76e ~
074D 41 769 rcfO02s ld ~,~h'1 ~ n xt intr lbit t i a 770 ~
771 ~ ~- ` P
772 ~
074E 2R 773 rcfO06 rot ; r_ ~rp 774 ~
775 ~ r -d c~ ~d lo 776 ~
074F 3C09 ~ rcfOOO~ ld ~ vlfrb 0751 3F14 778 t ~,comm~l - 779 ~
0753 BD 780 b rcfO02 ~ to next intr 7el, 782 ~ r--d comm nd hi 7e3 ~
0754 3C09 7e4 rcf001 ld ~,vlfrb 0756 07 78S rorc 0757 07 786 rorc 0759 07 787 rorc 0759 3e31 7ee ~nd ~,~OOOlb 0758 38 æ 789 or ~,SOOlOb 075D 3F15 790 ~t ~,comm-h 791 ~
79Z ; r-~d , writ- ?
793 ~
075F 3~fv 794 vt ,dcm 0761 3C14 795 ld ~,comm-l 0763 3FFC 796 ~t ~,dcl 076~ 4F 797 ld ~,~h'~
0766 3FFE 79B ~t ~ ~cn 799 ;
0768 33 800 ldl ~dc 0769 3F25 801 ~t ~,writ-n 0768 32 802 ldh ~,Odc~
076C 3F27 eo3 vt ~,r-~dn eo4 ~
076E DO 80~ cmpr ,~h'O
076F OE 806 t-utp f 1 3381~44 CP/~ TLCS-47 PSSE~8UER v2 2 P~GE 11 .

LOC OBJ UINE SOUROE ST~TE~ENT
0770 BC B07 b re-100 ; no d not r~ading 808 ~
809 ~ r-~d eomm~nd elo ~
0771 3901 811 ot puvum,O ; set pr viou~ comm and n-od d-t~
el2 ;
0773 40 e13 Id ,~h'O
0774 3F28 el4 t a~r~-dc ; ro~ding counter 5 t els ~
816 ; out 'm rk' b el7 3 n-xt ele ~
0776 3B76 819 re~O05~ elr ~opO6,3 ~ out 'm~rk' ezo 1 0778 C1 821 ld h,~h'1 0779 Ee e æ ld l,rh'e 3 to Rep routino B23 ~
077~ 40 824 ld a,~h'O ~ next intr 1/2 825 I bit tim-e26 ~
077B 8E e27 b refO06 ; to re-w~rD routin .

82e ;
829 ~ wrlt- eomm~nd ?
B30 ~
077C 3C25 831 re~100~ ld a,writ n 077E DO 832 cmpr a,~h'O
077F OE 833 tevtp zf RO~ P~GE NO 30 07eo 6776 834 b refOOS ; to Rep routin~
e35 ~
e36 ; writ~ comm~nd 837 ;
07e2 DF e3e cmpr a,~h'-0783 OE 839 te~tp ~f 0784 B5 840 b refllO ; condition~l poll e4l ~
0785 3914 e42 t puvdm,1 ; s~t or-viou~ comm and r-qulr-e43 ~ answ-r 0787 2DlD e44 t th'l,lcicot B45 ;
0789 Dl e46 cmpr a,~OOOlb 078P ge e47 b re~120 ; 'rQad dQvic~ data e48 ; command e4s ~
e50 ~ road spu statu- eomm-nd es 07eB 41 8S2 ld a,~
078C 3F24 8~3 st a,spuep eS4 ;
07eE~ 3C02 e55 ld ~,Ypu~l 0790` 3~06 es6 ~t ~,vl~tl 079Z 3C03 es7 ld ,~pu-~
0794 3F07 8se st a,vl~th CP/~ TLCS-47 ~SSE~BLER V2.2 PqGE 1 2 LOC oe~ LINE SOUROE
sss t 0796 6776 e60 b rcfO~S

e6z ~
e63 ~ rw~d d-vic- d-t~ c_ J
e e6s ~
o~se 3C4Z e66 rcflZO~ ld ~,h-~tOl o79~ 3~06 e67 ~t ~,vl~tl 07sc 3C43 e6s ld ~,k-~tOh o7sE 3F07 869 ~t ~,vl-th ~ 870 ~
o7~o 3C23 871 ld ~,~pu~k 07~Z OE s7z t- tp zf 07~3 ~E e73 b rc-l21 87~ ~
07~4 3F24 s7s ~t ~,~pucp 07P6 40 B76 ld ,~h'O
o7~7 3F17 877 ~t ~,~puf~
878 ~
o7~9 44 879 rcflZ2~ ld ~,Sh' 4 07~ 3FZ6 eeo ~t ~,writ-h esl ~
07PC 6776 es2 b rcfOOS
es3 ;
07~E 08 884 rcf lZl~ inc 07~F 3F24 sss t ~, ~pUCD
07~1 4f se6 ld ,Sh'f 078Z 3F17 es7 .t ~,~puff ; no k-y ~tro~r ess, 0734 q9 ess b rcfl æ
eso ;
89l ~ condition-l poll es2 ~
o7~s 3C42 es3 rcfllO~ ld ~,k~tOl o7a7 3F06 es4 .t ~,vlftl o7~9 3C43 ess ld ~,k-~tOh 07~8 3F07 es6 .t ~,vlfth ; d~t~ in es7 ~
073D 41 ess ld ~,Sh'L
07~E 3FOD ess .t ~,lcicot RQh P~GE NQ.31 o7co 3E24 9oo ~t , ~DUCp 901;
O7C2 3s76 902 clr ~opO6,3 903 ;
07C4 3914 904 ~-t ~ou~d~,l 90S ~
07C6 3CZ3 906 ld ~,~pu~k 07cs OE 9o7 t--tp zf o7c9 sf soe b rcflll 909 ~
07C~ 40 9lo ld ~,Zh'O

t 1 338044 CP/~ TLCS-47 ~SSE~8LER V2 2 P~GE 13 LOC 03J LINE SOURCE ST~I~ _~
07CD 3F17 911 t ,-ouf~
07CD 6776 912 ~-- b re~O
913 l 07CF 4F 914 re-111 t ld ~, Dh' ~
07W 3F17 91S t ~,-DU~- ~ no k ystrok-07D2 6776 916 b re~OOS

sle 920 I Rcp routin- ~ d r-~d ) 921 1 ` I
sæ, 07D4 39C3 924 rcDI t-~tp D~rity,O
07D6 ~9 92~ b rcpOOO ; p~rity iror 07D7 ~r~ 927 ld ~,writ-n 07D9 DF 928 CmPr ~, ~h' ~
07D~ al 929 b rcD100 ; not condition~l D
oll 07D8 2EOF 931 cmDr ~-rvre, ~h' O
07DD ~1 932 b replOO ~ d~t~ in 933 ~
07DE 39S4 934 clr sDuvdm,1 ; cl--r pr viou~ co mm~nd 93S ; ne d ~nsw-r bit 07E0 ~9 936 b repOOO

07E1 394a 938 rcplOO~ elr vlftb,O ; s-nd ~ck~
939 ;
9 W ; mod- ch~nge 941 ;
07E3 3910 942 rcDoo3~ s-t DUv~h~l ; chtng- mode 943 ; to 'tr~n~mit' 944 ; n-xt intr 945 ;
07E5 C1 946 repO041 ld h, ~h' 1 07E6 E~ 947 ld l, ~h' ~ 3 to Tra routine 948 ~
07E7 W 949 ld ~,~h'O ; n-xt intr 1/2 bi t 950 ~ tim-951 I r _w-rp 952 ;
07E~ 2~ 9S3 r t 954 ;
- 95S ; p~rity rror 9S6 ;
07E9 3921 957 rcpOOO~ s-t spuvum,2 ; sot 'commtnd inhi Dit~
958 ~
07E3 3908 959 ~-t vlftb,O ; ~nd 'n~ck' 07ED ~3 961 b repO03 962 ;
963 ;
96S ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

1 338~44 cp/~ TLCS-47 ~SSE~BLER VZ 2 paGE 14 LOC osJ LINE SOURCF ~I~l~.T
966 ~
967 l s6e ; Tr~
969 ~ T
9~0 971 ~
972 ; mod- ch~ng- 1 973 ;
0~E 3950 974 tr~ clr puv-h,l ~ mode ch~ng-975 1 to r ceiv- moc-07F0 3sEl 976 t- tD DUVUm~2 07F2 87 977 b tr~OOO ; br~nch on s7e ~ ~ comm~nd inhibit .
979 ~ n-~t intr 980 ~
07F3 Cl 981 ld h,t'h~l 07F4 EC se2 ld l,th'c ; to Rc~tn routine se3 ~
07F~ 45 se4 tr~OOll ld ~,~h~S ; n-xt intr ges ; bit ti~e 986 ;
ge7 ~ ~ r- ~ o - sse ~
07F6 2~ geg r t 990 ~
991 ~ - n-~t intr 992 ~ in p~rity ror 993 ~
07F7 cz 994 tr~OOO ld h,Zh'Z
07Fe EO 995 ld l,~h'O ; to Rc~t~b routinc 996 ~
07Fs B5 997 b tr-OOl sse 1001 ~
1002 ;
1003 ; Rc-tn routin-1004 ~ ;
1006 ~
07F~ 3989 1007 rc-tn t--t vl-rb,3 07FC 6e20 looe b rc-tnO ; fr~ming rror 1009 ~
1010 ~ r-~d ?

07FE 3CZ7 1012 ld ~,r-~dn RO~ P~GE NO 32 oeoo DO 1013 cmpr ~,tOOOOb 0801 OE 1014 t--tp ~f oeo2 97 1015 b rc tnl ; branch on 1016 ; ro~d comman d 1017 ;re~d or writ- comm~nd .

CP/~ TLCS-47 aSSE~8LER V2 2 PAGE lS

LOC 08~ LINE SOURCE 51~l G ._N I

oao3 3948 1019 rc~tn6l clr ~Duv~h,O ~ to ~bnorm~l mod-loeo ~
1021 ~ 1200 bit tim r on loæ ~
oeos 3914 1823 rc tnZ~ ~ t ~puvdm,l ; ~1200 bit tim~r ' on 1824 ~
0807 42 102S ld ~,'h~2 oeoe 3FF6 `1026 ~t a,timrhn oeoa 4C 1027 ld ,~h'c oeo8 3FFS 102e ~t a,timrmn 080D 4F 1 oeg ld a,Zh'-080E 3FF4 1030 ~t ~,timrln 1031 ~
0810 4e 1032 ld ~,th~8 0811 3a8e 1033 out ~,Xoplc 1034 ;
103S ~ uxt rn~l intr n~ol- ;
1036 ~
0813 397S 1837 rc-tn3 -clr Duv~1,3 1038 ~
1039 ; r turn - 1040 ~
081S 66DF 1841 b rOllll 1042 ~
Oel7 3C2S 1843 rcvtnl~ ld ~,writ-n 0819 DO 1044 cmor a,~OOOOb Oe1a 81 104S b rc tn7 ; bran~h on 1046 ~ writ- comm~nd 1047 ~
1048 ; comm-nd rnd d 1049 ;
0818 3940 10~0 clr ~puv-h,0 ; to ~bnorm-l mod-lO~
081D 3934 lOS2 ~ot ~puvdm,3 ; 'comm~nd ~x-cut~' 18S3 ;
081F 93 lOS4 b rc~tn3 ; to rcturn lOSS ;
lOS6 ; - fr~ming rror 18S7 ~
0820 3940 lOS8 rc~tnOI clr ~puv~h,O ; to ~bnorm~l moae 0822 3931 1060 ~-t ~puvum,3 ; framing rrror 1061 ;
0e24 4F 1062 ld ~,~h'f oe2s 3FS3 1063 ~t ~,fr~n-0827 3FF6 1064 ~t ~,timrnn 0829 3FF~ 106S ~t ~,timr~n 0828 4a 1067 ld ~,~h~
oe2e 3FF4 1068 ~t a,timrln 1069 ;
082E 3836 1070 ~ t XooO6,3 1071 ;
0830 93 1072 b rc~tn3 ~ to rrturn CP~ TLCS-47 aSSE~2LER v2 2 Pa~iE 16 LOC 03J LINE SOURCE 51~l~ _~1 1073 l 0~31 3910 1074 rc~tn7s t ~ouv h,1 ; to tr~n~mit mod-oa33 83 107~ b rc~tn6 1076 ~

1079 ;
loeo;
1081 I R-td ( d~my routin~ ) 1084 ;
108~ ; - n-xt intr ~086 1 0834 C2 1087 r tds ld h, rh ~ 2 083~ EO 1088 ld l,Sh'O I to Rc~t~b 0836 4~ 1090 ld ~,~h~5 ; n~xt intr 1091 1 11 bit ti~v 1O9Z I rv-w~rp 0837 2a 1094 r t 1 09~ ;
1096 1;;;;;;;;;;;;;;;;;;;;l;;;~;;;;;;;;l;;5;;;
1097 ;;;I;;;;;;;;I;i;;;;;;;;;;i;l;;i;;;;;;;;;~

1099 ~
1100 ; Rc~t~O
1 101 ; ~ ;

1103 ;
1104 1 ch-ck toD bit 0838 3939 1106 rcst~Os t~t vlfrb,3 Oa3R ao 1107 b rc~tnO ; r~ming rror llOe ;
083B 3940 1109 rc~t~ls ~lr puv-h,O ; to ~bnorm~l modQ

083D 397~ 1111 ~lr spuv~l,3 ; xtcrn~l intr en ~0~--1112 ;
OB3F 66DF 1113 b rO1111 ; rcturn 1116 ;
1117 ; Rdd ~ d-t~ r-ceiv- ) 1118 ;
1119;
1120 ;
RO~ PaGE NO 33 ~
0841 2E3a 1121 rdds cmDr vl~ h'3 0843 OE 1122 t--tp z-0a44 98 1123 b rddOOO ; d3t3 l SQt 1124 ;
~.

CP/h TLCS-47 ~SSE~LER V2 Z
P~GE 17 LOC OBJ LlNE SOUR OE ST~TE~E~T
Oe4S 2E7P, llZ5 cmpr ~lfc,th'7 Oe47 ~8 1126 b rddOO1 -1127 ;
112e ~ d-ta h s t 1129 ;
Oe4e 3c2e 1130 ld a,ro~de Oe4a OS 1131 rolc Oe4B 3eZ1 1132 or a,t~OOlb 084D 31 1133 xcn a,l Oe4E C8 1134 ld h,th'e 084F 3C09 1135 ld a,vlfrb 0851 OF 1136 vt ~,Ohl ; d~t~ in 08S2 3D76 1138 clr ~opO6,3 ; out 'mark' 1139 ;
1140 S to Rdp routin-1141 ~
0854 C2 1142 ld h,th'2 oes5 E4 1143 ld l,th'4 I to RCp 1144 ~
08S6 40 1145 ld ~,th'O ~ n-xe intr 1146 ~ 1/2 bit ti~

114e ~ r_ ~ ~

oes7 2a 1150 rddO02 r-~
1151 ;
l~S2 ; d-t- in 1153 ~
0858 2F1~ 1154 rddOOO dd vlfc,th'1 llSS 7 oeSa 3 oe e 1156 ld ,r--dc oe5c 05 llS7 role 08SD 383E 115e and a,tlllOb 08SF 31 llS9 xch ~,l oe60 ce 1160 ld h,~h~e 0861 3C09 1161 ld ~,vlfrb Oe63 OF 1162 ~t a,Ohl ~t~ in 0864 41 1164 ld a,Sh'1 086S C2 116 ld h~th'2 oe66 e 1166 ld l,th'2 1167 ~
0867 97 116e b rddO02 ; to r-turn 1169 ~
1170 ~ ~hift 1171 ;
086e 2F1~ 1172 rddOO1 add vlfc,Zh'l ; vlf counter 1173 ; incr~sr 086~ 3C09 1174 ld a,vlfr~
086C 07 1175 rorc 086D 3F09 1176 ~t a.vlfrb ; ~hift Oe6F 41 117B ld ,th'1 1179 ~

~!

- I 33~044 CP~h TLCS-47 aSSE~8LER V2 2 PaGE 18 LOC 03J LINE SOURCE ~(~1~ _~l 0870 97 1180 b rddO02 ~ to r turn 1181 ;

1184 ;
- 118~ ; I
1186 I Rdp I p rity bit ) 1~87 1 lles I
0871 39C8 1190 rdps t--tp p~rity,O
0873 8C 1191 b rdoOOO I p~rity vrr~r 1~92 1 OB74 3948 1193 clr vlftb,O ; ~et '~ck' 119~ 1 oe76 3910 1195 rdpOOll -t puv-h,l ; ~et to tr~n-mit m ode 1~96 ;
1197 ; to Td~ch routin-087e C2 1199 ld h,Zh'2 0879 E6 1200 ld l,~h'6 ~ to Td~ck 0e7a 40 1202 ld ~,fh'O ~ n-xt intr 1/2 bit 1203 I ti~
.

1204~ ; P
120~ ~
oe78 2a 1206 r e 1207 ~
120e 1 .-e 'n-ck' 1209 ~
oe7c 390e 1210 rdpOOO~ ~ e vlftb,O ; ~-t 'n~ck' Oe7E ~6 1212 b rdDOO1 ; to r-turn 1216 ~
1217 ;
1218 ; Td~ck out ( '-ck' or 'n~ck' ) 1219 ~ ;

1221 ~
087F 39~0 1 Z2 td~cks clr ~puv~h,l ; to r-c-ivu modo 1223 ;
læ 4 ; to Rd~-t routine læ~;
RO~ PaGE NO 34 ~
0881 C2 1226 ld h,Sh'2 0882 E8 1227 ld l,~h'e ; to Rd~t 122e ;
0883 4~ 1229 ld ~,~h~ ; next intr 1230 ~ 11 bit ti~e 1231 ; r- w~ p -- 1 338~4~

CP~ TLCS-47 ~SSE~8LER VZ 2 LOC OBJ LINE SOUROE
1232 ~
Oae4 2a 1233 r t lZ37 ~ Rda-t ~ ~top bit ) lz3e 1 1239 ;
1240 ~
o~es 3989 1241 rd~-t t-~t vl~rh~3 oee7 6820 1242 b rc-tnO ~ stop bit rror 1243 ~
oeeg 39ce 1244 t- tp vlftb O
oeea AE 124S b rd~-t~
1246 ~
oeec 3C2B 1247 rd~ t6 ld a,r odc OeeE oe 124e inc OeeF 3F26 1249 st ~,ro~de Oe91 3E27 lZSO cmpr ~,rmadn oeg3 OE lZSl t--tp ~-Oe94 ~4 12S2 b rd~-t3 ; th- nd 12S3 ~
12S4 ~ g-in 12SS ; 1200 bit tim r start 12S6 ~
oegS 4Z 12S7 ld ~, ~h~ 2 oeg6 3FF6 12Se st ~,timrhn oege 4C lZS9 ld ,Sh'c 0399 3FF5 1260 st ~,t~i~rnn 089B 4F 1261 ld ~,Sh'-oegc 3FF4 1262 st ~,timrln 1263 ;
089E 4e 1264 ld ~,Sh'8 089F 3AeC 126 out ~oplc ; tim~r tart 1266 ~
08A1 3914 1267 -t spuvdm,1 ~ 1200bit timrr bit 126a ; on oea3 a8 1269 b rd-~tl 1270 ;
- 1271 ; s~t 'cc -nd ~ cut- bit ' 1272 ~
08~4 3934 1273 rd-~t3t sot cuvdm 3 1274 ;
0e~6 3941 127S clr spuvum,O ; clc~r orevious co mmand n- d 1276 ; d~ta bit 1277 ; to r-turn 127e ;
08Ae 3940 1279 rda-tl clr spuvsh,O ; to abnormal mode 1280 ;
08Aa 397S 1281 clr spuv-1,3 ; l'st intr enable 12e2 ;
08AC 66DF 12~3 b rO1111 ; rrturn l2e4, 08~E 3C16 126S rdast4 ld a,vlfrc 0e80 08 12~6 ine CP/~ TLCS-47 aSSE~BLER V2 2 PaOE 20 LOC OSJ LINE SOUROE STRTE~ENT
oeB 1 3F16 12B7 ~t a,vl~ c 0883 D~ 12e9 cmpr a,Sh'~
08~4 D8 1290 b rda-t~
1291 ;
Oe8~ 3924 1292 .-e ~puvd~ 2 ; 10 c bit on 08E7 3B36 1293 ~-t XopO6,3 OBB9 6936 1294 b r~tO04 129~ ~
0883 3C28 1296 rda~t~ ld a,r~ de 08BD 09 1297 d-e a 08BE 3F2B 1298 st ~ readc RO~ PRGE NO 3~
oeco 6e8e 1300 b rda-t6 1304 ; TO routine 130~ ~
1306 ;
130~ ;
1308 ; start bit ?
1309 ~
08 e 3BC0 1310 tOI t-stp XipOO,O
08C4 94 1311 b tOOOOO ; not start bit 1312 ;
oec~ 393~ 1313 ~et puv~1,3 ; xt-rnal intr 1314 ; dis~bl-oec7 40 131~ ld ,Sh~O
08C8 3FOC 1316 ~t a,p-ritt ; tran~mit parity 1317 ; re~ct oec~ 3C06 1318 ld a,vl-tl oecc 3F08 1319 ~t a,vl~tb ; tr~n~mit dat~ in 1320 ;
OeCE 3876 1321 clr XopO6,3 ; out 'm-rk' 13æ ;
1323 ~
1324 ; next intr 132~ ;
08DO e 1326 ld h,Sh'2 08Dl EC 1327 ld l,Sh'c ; to Tdl routine 1328 ~
08D2 40 1329 ld a,Zh'O ; 1/2 bit time 1330 ;
133~ ~ o 1332 ;
08D3 2a 1333 r-t 1334 ;
133~ ~
1336 ; tart bit rror 1337 ;
08D4 3914 1338 t00000 set ~ouvdm,l ; '1200 bit countin 9' .

-CP~ TLCS-47 ~SSE~LER V2.2 P~OE 21 LOC 03J LINE SOURCE ST~TE~ENT
1339 ~
08D6 3940 1340 clr puv~h,O ~ ~bnorm-l modu 1341 ~
1342 ~ out '~o~c-' 1343 ~
08D8 3B36 1344 t ~ooO6,3 ; out '-o~cc' 1346 ~ 1200 bit tim r eontinur~
134~ ~
OeDa 3C8C 134e ld ~,lncoth 08DC 3FF6 1349 ~t ~,timrhn OeDE 3C88 13SO ld ~,lncotm OeEO 3FF~ 13~1 t ~,tlornn OeE2 3cea 13~2 ld ~,ineotl OeE4 ~Fr4 13S3 ~t ~,timrln 13~4 ~
08E6 48 13~5 ld ~,Sh' e 08E7 3~ec 13~6 out ~,~oplc ~ 1200 bit timur co ntinu-~ -13S7 ;
l3se, 13~9 ; r-turn 1360 ~
08E9 66DF 1361 b rOllll 1363 ~
1364 ~ ;
136~ ~ Tdl routinm 1367 ~
e ~ I
1369 ~ mod- ch~ng-OeE~ 39 W 1371 tdl~ clr ~ouv-h,l ~ rnc-ivo mod-1372 ~
1373 ~ n xt intr.
1374 ~
OeED C2 137~ ld h,~h'2 08EE EE 1376 ld l,~h'n ; to Trri 1377 ;
08EF 40 137e ld ~,~h'O ~ n~xt intr.l/2 bit 1379 ; timu 1380 ;
13el ; ~- . p l3e2 1 0eF0 2~ 1383 r t ,, 13e4 J
13e~ ;3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
l3e6 ;;;,;~;;;;;;;;;;;;;;;;;,;;;;;;;;;;;;;;;;;

1389 ~ Trml routin-1390 ;
1391 ;
1392 ~
1393 ; c- -~d ?

~ 338~44 CP~ TLCS-47 ~SSE~8LER V2.2 P~GE 22 08F1 3989 139S trmi~ t~t vl~rb,3 ~ comm-nd ?
08F3 6903 1396 b trmiOO ~ d 13g7 139~ ~ n xt d-t~
1399 ;
OBFS 3910 1400 ~ t puv-h,1 t to tr~n-mit modu 1401 ~
08F7 3C08 1402 ld ~,vl~tb 08F9 07 1403 rorc 08F~ 3F08 1404 .e 4 vl~tO ~ d~t- 5 t 140~ ~
08FC 41 1406 ld ~,~h'1 08FD 3FOP 1407 t ~,vlrc ~ count-r s-t l40e ~
1409 ~ n xt intr.
1410 ~
08FF C3 1411 ld h,~h'3 ROh PQGE NO.36 0900 E2 1412 ld l,~h'2 ~ to Tdo 1~13 ~
- 0901 41 1414 ld ~,S1 ~ n-xt intr. 1 bit 141~ ~ time 1416 ~ p 1417 ~
0902 2~ 1418 trmiO1~ r t 1419 ~
1420 ~ -1421 ~ ce .d r c-iv d l4æ
0903 3836 1423 trmiOO~ ~ t XopO6,3 ; out ~P~C~
O90S C3 1424 ld h,2h'3 0906 EO 142S ld ~,th'O 7 to Rd~mymi - 1426 ;
0907 40 1427 ld ~,~h'O ~ n-xt intr.1/2 bit 1425 ~ tim-1429 7 ro-w~rp 1430 ~
0908 82 1431 b trmiO1 ; to r~ D

1436 ;
1437 ; Rd~mymi routin-1438 ;
1439 ;
1440 ;
1441 ; p~rity,count-r cl-~r 1442 ;
0909 40 1443 rd~myl ld ~,~h'O
O90Q 3F0~ 1444 ~t ~,p-rity O90C 3F0~ 144~ ~t ~,vl~c ; countur cle~r CP/~ TLCS-47 ~SSE~LER V2.2 P~GE 23 LOC OBJ LlNE SOURCE Sl~l~_.
1 ~ '1~;
1447 ~ n xt intr.
l44e, O90E C1 1449 ld h,Sh'1 O90F E4 14SO ld l,Sh'4 ~ to Rc~
14~
0910 40 14S2 ld a.Sh'O ; n-xt intr. 1/2 bi t 1453 ~ ti~
14~4 ~ p 14~ ~
0911 2~ 14~6 r t 14~7 1460 ~
1461 ~ ;
1~62 ~ Tdo routin-146~ ~
1466 ~ count r ?
1467 ;
0912 2E3~ 146e tdo~ CmPr vl~c,Sh'3 0914 OE 1469 t - e D 2-0915 ~3 1470 b tdoOOO ~ n-xt data s-t 1471 ~
0916 2E7PJ 1472 cm~r vl~c,Sh'7 O91a OE 1473 t-~tp zS
0919 ~e 1474 b tdoOO1 ; p~rity s~t 1476 ~ d-t- t 1477 ~
091~ 3coe 1478 ld a,vl~tb O91C 07 1479 rorc O91D 3FOe 14eO ~t ,vl-tb ; data ~t l4el ~
14e2 ~ count-r in._._~~u l4e3, 091F 2F1~ 14e4 tdoO021 ~dd vl~c,Sh'1 l4e, 14e6 ~ n-xt intr. no chang~ address l4e7, 0921 41 14ee~ ld a,Sh'1 ; n-xt intr. 1 bit tim~
14e9 ;
1490 ;
1491 ; .... ~ p 1492 ;
0922 2~ 1493 r~t 1494 ~
1495 ~ count r Cu-l 3 - 1496 ;
0923 3C07 1497 tdoOOOI ld a,vl~th 0925 3Foe 1498 ~t a,vl-tb ; tran~mit data re~
1 ~c--1499 ;
o9Zt`9F 1500 b tdoO02 ; to r _warp CP/~ TLCS-47 ~SSE~BLER V2.2 paGE Z4 LOC 08J LlNE SOURCE ST~TE~ENT
- lSOl ;
1502 ~ count r q~l 7 1~03 ;
09Z8 3COC 1504 ~doOOl~ ld ~,p~ritt 092P 3Foe 150S t ~,vlftb ~ p~rity d~t~ in 1506 ;
lS07 ; n-xt intr.
lsoe I
092C C3 1509 ld h,~h'3 092D E4 1510 ld 1,fh'4 T to Tp lSll I
092E 41 1512 ld ~,~h'l ; n-xt intr. 1 bit lS13 ~ tim-1514 ~ ~ . p 092F 2~ 1516 r t lS17 ~

lS21 ;
15 æ I Tp routin-12 3 ;
1~24 1 læs I
0930 3COD lS26 tp~ ld ,lcicot 0932 3EZ4 lSZ7 cmpr ~,xpucp 0934 B8 læ 8 b tpOOOO
lS29 1530 ~ lci count r qu~l~ ~- DUCP~
lS31 ~
093~ 3908 1532 ~-t vlftb,O ; n-xt d~t~ '1' 1533 ~
lS34 ; to Tlci routinc 1~3S ;
0937 C3 1536 tpOOOl~ ld h,Sh'3 093e E6 lS37 ld l,~h'6 ; to Tlci lS38 ~
0939 40 lS39 ld ~,~h'O ; n~xt intr. 1/2 b it lS40 ~ tim-lS41 ; ~- ~ P
lS42 ~
093~ 2~ lS43 r t lS44 lS4S ;
lS46 ; lci countcr not qu~l ~DUCp~
lS47 ;
0938 394B 1548 tpOOOO~ clr vlfth~0 ; ncxt d~ta ~ 0 lS49 ;
093D B7 lSSO b tpOOOl ; to r-turn lSSl ;
l~SZ ;;;;;;~;;;;1;;;;;;;;;;;;;;;;;;;;;;;;;;;;; -lSS4 ;

CP/~ TLCS-47 ASSE~BLER V2.2 LOC OBJ LlNE SOURCE ~~
1556 S Tlci routin- ;
15~7 l s~e 15~9 ;
093E 3950 1560 tlcls clr spuv h,l ; to r-c-iv- mode 1~61 ;
1562 ;
1563 ; next intr.

ROh PAGE NO.37 0940 C3 1565 ld h,~h'3 0941 E8 1566 ld l,Sh'2 ~ to Rt~ck 1567 ;
0942 40 1568 ld ~,~h'O ~ ne~t intr. 1/2 Oi t 1569 ~ ti~
1570 ~
1571 ~ .~~p 1572 ;
0943 2A 1573 ret 1~74 1578 ~
1579 ~ ;
1580 ~ Rt~ck routine 1581 ;

lse3 ~
0944 3910 lS84 rt~ckl et puv h,l ; to tr~nsmit modo 1585 ~
0946 39F9 lS86 testp vl-rO,3 094e AB 15e7 b rt~ckO ; t n~ck' from E~U
1588 ;
1589 ; '~ck' rom ECU
1590 ;
0949 3BF6 1591 t-~tp ~ipO6,3 094a 94 1592 b rt~ckl ; lci countcr lS93 ~ ~qu~l 'spucp' 094C 3948 1594 clr vl~th,O ; tr~n~mit d~t~
1595 ~ qu~l '0' 094E 3951 1596 clr spuvum,l ; cl-ar 'pr~vious 1597 ; comm~nd reouires ~n ~n-w-r' 1598 ;
1599 ; n xt intr.
1600 ;
0950 C3 160~ rt~ck21 ld h,~h'3 0951 EA 1602 ld l,Sh'~ ; to T~t 1603 ~
0952 40 1604 ld ~,~h'O ~ n xt intr. l/2 bi t 1605 ~ time 1606 ;
1607 ; re-~rp 1 3`38044 CP~ TLCS-47 ASSE~BLER V2 2 nr 08J LINE SOURoe ~l~lt,_~T
160B ~
0953 2A 1609 r t 1610 ~
0954 390B 1611 rt-ekl~ ~t vlftb,O ~ transmit d-ta 1612 ~ quLl '1' 0956 3914 1613 ~ t spuvdm,l 7 1200 bit timor on 1614 ~
1615 ~ tran~mlt buff-r r-pl~e-1616 ~
095B 3C26 1617 ld a;writ-h 095A 30 161e xeh a~h O9S9 3COD 1619 ld ~,lcicot 16ZO ~
095D 3B01 16Zl ~dd a,rh'l l6æ, 095F 05 16Z3 role ~
0960 3a3E 16Z4 nd a,~h'-0962 31 16Z5 xch ,1 16Z6 ~
0963 OC 16Z7 ld a,~hl O9S4 3F06 16ZB st ~,vlftl 0966 lB 16Z9 lnc 0967 OC 1630 ld ~,Ohl 0968 3F07 1631 st ,vlfth ; k-y d~ta in ~63Z ~
096A 90 1633 b rtackZ
1634 ~
1635 ~ 'n~ck' from W
~636 ~ `
0968 3C16 1637 rtackO~ ld a,vlf c O9SD 08 1638 Lnc a 096E 3F16 1639 st a,vlf~c ~ vl- rror counter 1640 ; i~
0970 D5 1641 cmpr a,~h'~
0971 B9 164Z b rt~ek3 ; rror not qual 1643 ~ S'th tim-s 0972 3948 1644 elr vlftb,O ; tran-mit data '0' 164~ ~
0974 3954 1646 clr spuvdm,l ; ~1200 bit tim-r) bit el--r 1647 ~
0976 39Z4 164B s-t spuvdm,Z ; 10s~c timer bit o n 1649 ~
097e 90 1650 b rtaek2 ; to r~-w~ro 16~1 ;
165Z ; rror not qual ~'th tim-s 16 3 ;
0979 390B 1654 rt~ck3 s-t vl-tb,O ; n-xt data '1' 1655 ;
0979 3914 16-~6 s-t puvdm,l ; s-t '1200 bit tim r bit ' ~657 ~
097D 2FFD 165B add lcicot,fh'f 16~9 ~
097F 6950 1660 b rtaekZ
~ 1661 ;

CP/h rLcs-47 ~55Eh~LER VZ 2 P~GE 27 LOC OEJ LINE SOUROE ~l~lt _~T
RO~ P~6E NO 38 ~
ose~ 6950 1662 b rt~c~2 ~ eo r_ w~rp l663 ~
1664 ;

1667 ;
166e ;
1669 ; T~t rouitn- ;
1670 ;

ose3 3sso 1673 t~tt clr ~puv-h~ 1 ; r-c-iv- mod-~674 ~
0985 C3 167~ ld h, Sh~ 3 oge6 EC 1676 ld 1, ~h' C ; to R~t 1677 ~
ose7 45 167e ld ~,~h~ 5 ~ n-xt intr 11 bit 1679 ~ tim-eo ~
el ~ r_ ~rp 16ez ;
ogee 2~ 16e3 r t e4 ;
es ~
16e6 ; ~ ;
16e7 ~ R~t routin-ee ;
16es ;
1690 ~
oses 3sBs 1691 r~t~ tcut vl-rb,3 ose3 ~ 1692 b r~tOOO ; ~top bit c~nn't f ind 1693 ~
ossc 3EF6 -1694 t-~tp ~ipo6,3 3 098E ~E 169~ b r tOO1 ; out 'O' 1696 ~
oseF 3COD 1697 ld ~,lcicoe oe 16se inc 0992 3FOD 1699 t ~,lcicot ; lci countur decre ----0994 3910 1701 ~-t ~puv~h, 1 ; to tr-n~mit mo~c 1702 ;
0996 3914 1703 ~ot ~ouvdm~1 ; ' 1200 bit timr ' 1704 ~
ogge 42 1705 ld ~,~h'2 0999 3FF6 1706 ~t ~,timrhn o99~ 4C 1707 ld ,~h'c o99c 3FF~ 170e st ~,timrmn 099E 4F 1709 ld ~,th~f ossF 3FF4 1710 ~t ~,timrln 1711 ;
O9~l 4e 171Z ld ~, rh~e 09~2 3~ec 1713 out ~,%o~lc ~ 1714 ;

CP~h TLCS-47 ~SSE~LER V2 2 P~GE ze LOC CaJ LlNE SOURC ~r~t~_~T
09~4 3940 171~ r tO02~ elr puv - h~ O ~ ~bnorm~l mode 09~6 3975 1717 elr puv-1,3 3 xtvrn-l intr en~
blo l7le, 09~8 66DF 1719 b rO1111 ~720 ~
09~ 39~1 1721 r tOOOI elr puvum,l 17Z ~
09PC 6820 1723 b re tnO ~ fr~ming crror - 1724 ~
172~ J
09~E 39E4 1726 r~t001 tr~tD ~puvdm~2 ~ '10 ~ e bit' on ?
0980 36 1727 b r~tO04 e ~
1729 ~ 'cc- rd x-eute bit' on 1730 ~
0981 3934 1731 ~ot ~puvdm,3 1732 ~
O9B3 39~1 1733 elr ~puvum~1 ; previou~ commana n~ d d~t~
1734 ~ bit el-~r 098~ ~4 173~ b r~tO02 1736 ~
0986 39 W 1737 r tO04~ elr puv~h,O ~ ~bnorm~l mode 1738 ~
1739 ~ 10 ~oe tim-r t-re 17 W ~
0988 46 1741 ld ~,Sh'6 0989 3fF6 1742 ~t ,timrhn 0988 47 1743 ld ~,Sh'7 098C 3FF~ 1744 ~t ~,timrrn O9BE 47 174~ ld ~,Sh'7 098F 3FF4 1746 ~t ,timrln RO~ P~GE NO 39 ~
09C1 W 174e ld ,Sh'O
O9C2 3~8C 1749 out ~,%ople 1 7~0 09C4 49 17~1 ld ~,Sh'9 O9C~ 3P8C 17~2 out ~,~op~e ; ~t~rt 17~3 ~
O9C7 39~4 17~4 elr puvdm,1 ; 1200 bit timer ~i t 17~ ~ elu~r O9C9 66DF 17~6 b rO1111 ; return 1 7~7 17~8 17~9 ~

1763 ;
1764 ; r--w~rp routin- ;
176~ ; ;
1766 ~

CP/~ TLCS-47 aSSE~BLER VZ 2 OC 08J LINE SOURCE ~1~ ~ I

RO~ PaGE NO 40 oaoo 1767 org h'-OO
1768 ~
1769 ; ~ p 1770 ~
oaoo DO 1771 cmpr ~,Sh'O
OaOl OE 1~ t-~tp ~
oao2 98 1773 b _ rpO ~ n-xt intr 1/Z bit 1774 ~ timr oao3 Dl 1775 ~mpr ~,Sh~l oao4 OE 1776 t--tp z~
oaQ5 a4 1777 b rw-rpl ~ n-xt intr 1-bit 1778 ; tim-oao6 D2 1779 cmpr ~,Sh'2 oao7 OE 1780 t-~tp ~
oao8 aD 17el b ~ rp2 ; n-xt intr 6 bit 1782 ~ tim-0~09 D3 - 1783 ~mpr ~,Sh'3 oao~ OE 1784 t-~tp ~-oao8 B7 1785 b rw~rp3 ; n-xt intr 9 ~it 1786 ~ timr 1787 ~ timr 1788 ~ 11 bit tim r 1789 ~
oaoc 4F 1790 ld ~.Sh'-OaOD 3F18 1791 ~t ~,timrho OaQF 47 1792 ld ~,Sh'7 OalO 3Fla 1793 t ~,ti~r~o Oal2 4C 1794 ld ~,Sh'c Oal3 3F19 1795 t ~,timrlo-1796 ~
1797 ; n-xt w~rp 1798 ;
Oal5 29C4 1799 rw-rp4s xch hl,w~rpcl Oal7 28C4 1800 ld hl,w~rpcl 1801 ~ `
oal9 66DF 1802 b rOllll ; r~turn leo 1804 ~
1805 ~ 1/2 bit tim r 1806 ~
OalD 4F 1807 rw~rpOs ld ~,Sh'S
OalC 3F13 1808 st ~,timrho OalE 3Fla 1809 ~t ~,timrmo oazo 4~ lB10 ld ~,Sh'~
OaZl 3F19 1811 ~t ~,timrlo lelz;
oaz3 95 1813 b rw-rp4 1814 ~
1815 ~ 1 bit tim-r - 1816 ~
OaZ4 4F lel7 rw rpls ld ~,Sh~-oa25 3F18 1818 ~t ~,timrho CP/~ TLCS-47 RSSE~8LER V2 2 P~OE 30 LOC OBJ LINE SOUROE STaTE~ENT
oa2~ 3Fla _18~9 ~t ~,ti~r~o Oa29 44 18ZO ld ~,Sh'4 oa2a 3F19 1821 ~t ~,ti rlo 1 A:~ I
0a2C 9~ le23 b r~rp4 1824 ;
182~ 1 18Z6 ~ 6 bit tim r lez7, Oa2D 4F 18Z8 rw-rp2~ ld ~,Sh'f OaZE 3Fl8 18Z9 ~t ~,ti~rho oa30 4B 1830 ld ~,Sh~b Oa31 3F1~ 1831 .e " ti~rno oa33 48 1832 ld ~,Sh'8 oa34 3F19 1833 ~t ~,tinrlo 1834 ~
oa36 9~ 183~ b rw~rp4 le36 ~
1837 ; 9 bit ti~rr 1838 ;
Oa37 4F 1839 rw~rp3l ld ~,Sh'f Oa38 3FlB 1840 ~t ~,ti~rho Oa3a 49 le41 ld ~,Sh'9 oa3a 3F1~ 1842 ~t ~,ti~rno Oa3D 44 1843 ld ~,Sh'4 oa3E 3F19 1844 ~t ~ timrlo le4~ ;
RO~ P~GE Na 4i Oa40 6al~ le46 b ~ rp4 1847 ;
~nd ~SSE~8LY CO~PLETE, O PROGR~ ERROR~S~

cp~ TLCS-47 RS~U. FR V2. 2 sy~soL TQ8LE
-CO~RD 0013 CO~PH 0015 co~aL 0014 * DQaTOH ooel *.DaTQoL 0080 * DRTRlH ooe3 * DaTRlL 00ez * DRTPJZH 0085 * DaTa a ooe4 * DPTR3H ooe7 * DQTQ3L ooe6 * DQTQ4H o0es * DRTa4L 00ea * DRTRCT 0200 DCH 00FE DCL 00FC
DC~ OOFD * DISPR 0032 * DISPH 0031 * DISPIW 0034 * DISPL 0030 * DrSPLw 0033 FRQ~E 0053 INCOTH 00BC
INCOTL ooeR INCOT~ 0oeB * IOVFl 060Z ~ KsT ooæ
KEST0H 0043 KEST0L 0042 * KESTlH 004S * KESTlL 0044 * KEST2H 0047 * KESTZL 0046 * KEST3H 0049 ~ KEST3L 004e * KEST4H 004a * KEST4L 004a * KESTSH 004D * KESTSL 004C
* KEST8H OOZl * KEsTsL 0020 * KEYND 00z9 * KEYNN 00ZQ
* KEYOD 0029 * KEYON 002C * KEYS 0100 * KEyss oeso * KEYSC OOOE * KEYT 0300 * KEYT8 oocs LC I COT 000D
* LDRTLl 0037 * LDRTLZ 0038 * LDQT~l 003S * LDRT~2 0036 * LDISP 0800 * LECOTH o0eF * LECOTL o0eD * LECOT~ ooeE
LIOVF2 ODOO * L~RIN 03EO * LRE~O OE00 * LTQsLE oo0o * LVLFEX 0coo * OVER2~ 0072 * OVERZH 0071 * OVERZL 0070 OVERQl 0012 * OVERHl 0011 OVER~I OOlO PQRITT 0ooc P~RITY 0008 RO 0692 ROOOOO 06C2 ROOOOl 06Cl RO1000 06C9 * ROl100 06 OE ROll10 06ER ROllll 06DF
RCP 0719 Rcaooo 0734 RCROOl 073~ RCR002 0732 RCFl10 07BS RCFlll 07CF RCFl 20 07se RCFl 2 1 07RE
RcFlæ 07P~s RCP 07D4 RCP000 07Es RCP003 07E3 * RCP004 07E~ RCP100 07El * RCSTRl oe3s RCSTRB os3e RCSTN 07FP, RCSTNO oezo RCSTN 1 oel7 * RCSTN2 oe0s RCSTN3 0el3 RCSTN6 oeo3 RCSTN7 0831 RDR~Y 0909 RDQST oee~ RDRSTl 0eRe RDRST3 08~4 RDQST4 0sQE
RDRSTS 0eBs RDRST6 oeec RDD oe41 RD w 00 oese RDDOOl oe6e RDD002 oes7 RDP oe71 RDP000 oe7c RDP001 oe76 RERDC 002e RE~DN 0027 * RE~DO 0060 RE~D 1 006 1 * RE~DZ 006Z ~ RE~D3 0063 ~ RE~D4 0064 * RE~DS 006~ * RE~D6 0066 * RE~D7 0067 ~ RE~OR 006R
RE~OH 0069 * RE~OL 006e RKCE 00so R~ I 06FC
R~ I 000 070F R~ I 001 0709 R~ I 002 070E R~ I 003 0715 * RNH 0069 * RNL 006D * RN~ 006C RST o9~9 RSTOOO 0sQR RSTOOl os~E RSTOOZ osP4 RST004 0986 RSTD oe34 RTRCK 0944 RTRCKO 0968 RTRCK 1 oss4 RTRCKZ 09so RTQCK3 0979 RWaRPO 0Rls RWQRPl OQZ4 RWQRP2 ORZD RWRRP3 OQ37 RWRRP4 0RlS * RWRPCH 00CQ
* RWRPCL 00ce * RWRPC~ 0oc9 SERVRC 000F spucp 0024 SPUFF 0017 SPUSH 0003 SPUSK 0023 spusL 0002 SPUTT OOlB SPUVD~ 0004 SPUVSH o0oo spuvsL o00s spuvu~ OOOl spw OOfF sPws 00C7 T0 0BC2 T00000 oeD4 TDl 0eEs TDRCK 0e7F TDO 0912 TDOOOO 0923 TD0001 0s2e TD0002 091F ~ TI~QZH 00FR
TI~R2L 00Fs ~ TI~R2~ o0Fs TI~RHN 00F6 TI~RHO 0018 TI~RLN 00F4 TI~RLO OOl9 TI~R~N 00f5 TI~R~0 001~
TLCI os3E TP 0930 TP0000 0933 TP0001 0937 TRR 07EE TRROOO 07f7 TRR001 07Fs TR~I 0eFl TR~IOO 0903 TR~IOl 0902 TST ose3 VLO040 06R3 vL0oso 06se VL0060 06Bs VLF00 1 063S VLF002 0647 CP/~ TLCS-47 ~SSE~8LER V2.2 P~GE 32 SY~DOL T~8LE
VLFOll 0623 VLF100 061E VLF200 062D VLF300 06~D
VLFC oo0a VLFEC 0016 VLFRB 0009 VLFT3 0002 VLFTH 0007 VLFTL 0006 ~ VLFX~ 00~2 VLFX~ 00~1 VLFXL 00~0 W~RPCL OOC4 ~ W~RPC~ OOC~ WRITEH 0026 WRSTEN 002~
DEFSN 0 ~ USER SY~BOL(S) .

P/~ TLC5-47 ~SSE~8LER VZ 2 paGE

LOC O~J LI~ESOUROE sr~, L~ _~T
1 ~, ;
2 ~ 7.1983. ;
3 ;lvl~ Vl O
4 ~ (TYP4740P) 6 ~ vl~ communic~tionroutin~
7 ~ ;
8 ~ ;
9 ;

noli~t li~t 303 ~
304 ~
30~ ~
ROh P~GE Na 4a ocoo 306 org h'cOO
307 ~
30e ~ disablc ?
309 ~
OCOO 3sF~ 310 vlf-x~ t-~tp spuv~1,3 OC02 6C42 311 b vl~xOO ; l'~t intr di~l .

313 ~ pu h r-gi~t r OC04 3FS2 31~ ~t ~,vlfx~
OC06 29~0 316 xch hl,vlrxl ; pu~h rcgist-r 3~7 ;
31e ; cl-- r axt-rn~l count-r 319 ~
ocoe 40 320 ld a,~h'O
OC09 3~ec 321 out ~,%oclc OC02 3B04 322 .- t %opO4,0 OCOD 3844 3~3 clr SopO4,0 ; .v-nt e imcr start ~ 324 ~
32~ ~ tim-r st-rt 326 ~
OCOF 3CF6 327 ld a~timrhn 0C11 3Fec 3ze st ,incoeh OC13 3CF~ 329 ld a,timrmn 0C1~ 3Fsa 330 ~t ~,incotm OC17 3CF4 331 ld ,timrln OCl9 3Fe~ 332 st ~,incotl 333 ~
OC13 4F 334 ld ~,~h'~
OClC 3FF6 33~ st ,timrhn OClE 3FF~ 336 ~t a,timr~n CP/~ TLCS-47 RSSE~BLER V2.Z

LOC OBJ LlNE SOURCE ~IQI~._~
OC20 4R 337 ld ~h~
OCZ1 3FF4 33e. t ~,timrln OC23 44 339 ld ,~h'4 O oe 4 3ReC 340 out ~,~oplc ~ timer ~t~rt 341 ~ 2 bit timo ) 342 t fr~ming rror ?
343 ~
or~6 39F1 344 t-~tp ~puvum,3 OCZ~ 6C43 34~ ~ vlfxOl I fr~ming orror 346 t 347 ~ mode ch~ng- from ~bnorm~l to norm~l 34e t OC2R 3900 349 ct puv~h,O ; to norm~l mode 3~0 ~
351 t tr~n~mit ?
. 3 æ ~
OC2C 39D0 353 t-~tp puv~h,1 OC2E 6C57 354 b vlfx oe ; tr~n~mit mode 3~ t 3X ; n xt routin-3~7 ~
OC30 40 3 e ld ~,th'O
OC31 3FC4 359 t ~,w~rpcl OC33 41 360 ld ,fh'1 OC34 3FC5 361 t ~w~rpcm ; ~ddrr~ h'O10 36Z ~
363 ~ n xt tim-r ~ctting 364 ~
OC36 4F 36~ ld ~,~h~f OC37 3FlD 366 ~t ,timrho OC39 3FlR 367 ~t ,timrmo OC3B 44 368 ld ~,~h'4 OC3C 3F19 369 ~t ~,timrlo 370 ~
371 ~ pop r-gi~t r 372 ;
OC3E 3C52 373 vlfx031 ld ~,vlfx~
RO~ PRGE NO.49 OC40 2950 374 xch hl,vlfxl 37~ ~
376 ~ return 377 ~
OC42 29 378 vlfxOO~ r-ti 379 ~
3eo ;
3el ; fr ming rror 3e2 ;
OC43 00 383 vlfxO1~ noD
OC44 4F 384 ld ~,~h'-OC4~ 3F18 38~ ~t ,~putt 3e6 t 3e7 ; ld ~,th'f 388 ; ~t ~,timrhn 3 3 ~ 4 CP/~ TLCS-47 ~SSE~8LER VZ 2 PaGE 3 LOC O~J LINE SOURCE SI~T~_~
3ag ~ ld ,~h'7 390 ~ ~t , e inr~n 391 ~ ld a,~h~e 392 ; st a,timrln 393 ~
394 ; ld a~Sh'4 395 ; out ~%oPle ; timor st~rt 11 ~i t 396 ; tim-OC47 3C8C 397 ld ,ineoth 0C49 3F1~ 39e ~t ~,ti~rho OC4a 3C8B 399 Id a,incot~
OC4D 3F1~ 400 ~t ,timrmo OC4F 3c8a W 1 ld a,~ncoel OC51 3Fl9 402 ~t ~tlmrlo W3 ~
~r~ 3336 404 ~t %opO6,3 W~ ~
OC55 6C3E 406 b vl~x03 W7;
408 ~
409 S tran mlt mod-410 ;
OC57 3376 411 vlfx02~ clr ~op06,3 ; out 'mark' 412 ~
OC59 3C06 413 ld a,vl~tl OC5~ 3F08 414 st a,vlftb ; tran~mit buf~-r 415 ; cl-~r OC5D 4F 416 ld ,~h'f OC5E 3FlS 417 st ~, e i~rho OC60 3Fla 41e ~t a,timrmo OC62 4a 419 ld a,~h'a OC63 3F19 420 ~t a,timrlo ; tim~r s-t 421 ;
OC65 42 42Z ld a,~h'2 OC66 3FC5 423 st a,warpem OC68 4a 424 ld a,~h'~
OC69 3FC4 42~ st ,~rpcl ; n-xt routin 426 ;
OC6~ 6C3E 427 b vlfx03 ; to rrturn 42~ ;
429 ~
430 nd PSSE~9LY CO~PLETE, O PROGR~ ERROR~S) - l 338~4q cp~ TLC5-47 assE~BLER vz~z paGE 4 sy~soL TaBLE
~ co~aD 0013 ~ co~aH 0015 * coy~aL 8014 ~ D~TaoH ooel * DaTa0L ooeo * DaTal H ooe3 * DaTalL ooe2 ~ DaT~2H 0085 * DATazL ooe4 * DaTa3H 0087 ~ DaTa3L ooe6 * DaTa4H 0089 * DaTa4L ooee * DaTacT 0200 * DCH OOFE * DCL OOFC
* DC~ OOFD * DIspa 003Z * DISPH 0031 * DISPIW 0034 DISPL 0030 * DISPLW W33 * FL~SH 0350 INCOTH w ec INCOTL ooea INCOT~ ooeB ~ KEST oo æ ~ KESTOH 0043 * KESTOL W42 * KESTlH 0045 * KESTlL w 44 ~ KESTZH w 47 KEST2L 0046 ~ KEST3H W49 ~ KEST3L 004e ~ KEST4H w 4B
* KEST4L w 4a * KEsTsH 004D * KEST~L w 4C * KESTBH WZl * KESTDL W20 * KEYND ooz9 * KEYNN 002a * KEYOD 002B
KEYON oozc * KEYS OlOO ~ KEYSB ozso * KEYSC OOOE
KEYT 0300 * KEYTB OOCB * LCICOT OOOD * LDasLl 003B
LDasL2 003C * LDas~l 0039 * LDas~z w3a * LDaTLl 0037 LDaTLz 003e ~ LDaT~l 003~ ~ LDaT~2 8036 * LDISP OBOO
* IFrOTH ooeF ~ LECOTL oosD * LECOT~ ooeE * LEDD 0310 * LIOVFl 0600 ~ LIOVFZ ODOO * L~aIN 03EO * LRE~O OEOO
* LTaBLE~ w oo * LVLFEX ocoo * ovER2a oo7z ~ OVER2H W71 OVERZL W70 ~ ovERal OOlZ * OVERHl OOll ~ OVERLl W10 aRITT oooc * paRITy OOOB * REaDc ooze ~ REaDN OOZ7 ~ RE~DO 0060 ~ RE~Dl W61 ~ RE~D2 W6Z ~ RE~D3 W63 * RE~D4 0064 * RE~Ds 006~ * RE~D6 0066 ~ RE~D7 0067 RE~oa 006a * RE~OH 0069 * RE~OL 006e * RKCE wso RNH 006B * RNL W6D * RN~ W6C ~ RWRPCH wc~
R~RPCL OOC8 * RWRPC~ ooc9 * SERVRC OOOF * spucp W24 * SPUSH 0003 * SPUSK OOZ3 ~ spusL 0002 SPUTT w 18 * SP WD~ 0004 SPUVSH oooo spuvsL ooos spuw ~ OOOl OOFF * SPWB ooc7 ~ TI~RZH ooFa ~ TI~RZL wFe * TI~RZ~ ooFsTI~RHN OOF6 TI~RHO OOlB TI~RLN OOF4 TI~RLO OOl9TI~R~N ooFsTI~R~O oola * VLFC oooa VLFEc 0016* VLFEx ocoo~ VLFRB ooo9 VLFTB W08 VLFTH ooo7VLFTL W06VLFXOO OC42 VLFXOl OC43 VLFX02 ocs7VLFX03 OC3EvLFxa oosz ~ VLfXH W51 VLFXL oosowaRpcL OOC4waRpc~ oocs ~ WRITEH w 26 WRITEN oozs DEFINED 137 USER SY~BOL~S) 154 ~ 338044 CP~ TLCS-47 ~SSEh~LER V2 2 PRGE

LOC 08J LINE SOURCE STRTE~ENT
1; ;
Z t ~ 19e3 3 J lr mo ~-~ Vl O
4 I tTlllP4740P) 6 1 r-moe- routln-7 ~ ;
e ~ ;
9;

~noli~t ~ t 2~8 ;
ROh PaGE NO ~6 OEOO 2~9 org h'-OO
260 ~
261 ;
262 ~ r c~P-263 ~
OEOO 3F6R 264 ~t ~,r mo-OEO2 44 26~ ld ~,~lOlOOb OEO3 13 266 xch ~,-ir OEO4 366F 267 iclr il,lOllllb OE06 2968 268 ~ch hl,r mol 269 ~
270 ;~;~ to top tim-r2 271 ~
OEO8 40 272 ld ,~O
OEO9 3R8D 273 out ~,%oDld 274 ~;~; ch-ch Nl 27~ ;
00B 3c6a 276 ld ~,rnh OEOD D3 Z77 cmDr ~,~h'3 OE0E OE 278 t-~tp 2f OEOF 6E~C 279 b intlOO
280 ~
0Ell D2 2el cmDr ~,~2 OE12 OE 282 tr-tD ~f OE13 ~4 2B3 b intZOO
2e4 ;
2e~ 1 or O
OE14 41 2B6 ld ~,tl OEl~ 3F62 2e7 ~e ~, rnh 2e6 ;
2eg ;; ~tting tim-r2 on 4 5m-290 ~
OE17 4F 291 ld ~,th'f CP/~ TLCS-47 ~SSE~8LER v2 2 PaGE 2 LOC QBJ LINE SQUROE ~~ JI
OE18 3FFa 292 ~t ~timr2h OE1~ 4E 293 ld ~,Sh'o OEl3 3FF9 294 ~t ~,timr2m 0ElD 3FF8 29~ ~t ~,timr21 OElF 4~ 297 ld ~f8 OE20 3a8D 29e out ~ ~oD1d OE22 6Ec~ 299 b r-t2 300 ;
301 Itl N1-2 302 ~
OE24 3CF3 303 int200~ ld ~,timr2l ; timcr ch-ck OE26 3802 304 ~dd ~,~'2 ~'~8 OS 38~ role OE29 04 306 t-~tp c- ;
OE2A BE 307 h int210 IJumo on c~rry '1' 30~ 1 309 ;~ ~-tting tim-r2 310 ~
OF~ 3~06 311 inZ0001 ~ct %ooO6,0 312 ;
OE2D 4E 313 ld ~,~h~- -OE2E 3FF~ 314 ~t ~,ti~r2h OE30 47 31~ ld ~,fh'7 OE3L 3FF9 316 ~t ~,timr2m OE33 4C 317 ld ~,~h~c OE34 3FF8 318 ~t ~,timr21 OE36 48 320 ld ,f8 OE37 3P8D 321 out ~,%oD1d ~t~r~

OE39 40 3Z3 ld ~,fO
OE3P 3F6B 324 ~t ~,rnh ;N1-0 32~ 1 03C 6cc/ 326 b r t2 328 l; ~t~rt d~t~ r c-iv-OE3E 3CF9 330 int210~ ld ~,timr2m RO~ P~GE NO S7 OE40 DF 331 cmor ~,~h'f OE41 6EZB 332 b in2000 333 ;
OE43 43 334 ld ~,f3 OE44 3F6a 33~ ~t ~rnh ;N1-3 336 ;
337 ; r m cl--r 338 ;
OE46 C6 339 ld h,~6 OE47 EO 340 ld l,~a OE48 ll 342 mov 1,~

156 l 338044 CP/h TLCS-47 ASSE~8LER VZ 2 LOC OBJ LINE SOURCE STATE~ENT
OE49 OF 344 int21t~ ~t ~,Qhl OE4A 18 34~ Lnc OE48 3898 346 cmpr 1,S8 OE4D OE 347 t-~tp z~
OE4E 90 34~ b int212 OE4F 89 349 b intZll 3~0 ~
3Sl ; ~-tting e i~ r2 3~2 ~
OE~O 3FF8 3S3 int212~ t ,timr21 OE52 4F 3S4 ld ~, Sh' f OES3 3FF9 3SS t ~,timr2m OE~ 3FFq 3S6 5t ,timr2h 3~7 ~
OE~7 48 3~8 ld ,f8 OES8 3a8D 3~9 out ~,~opld OESA 6EE7 361 b r t2 362 J `
~ 363 ~;d~t~ r c-iv-364 ~Nl-3 OESC 3C6C 36~ intlOO~ ld ~,rnm OE~E 31 366 ~ch ~,1 ~1( 2 367 ~
OE~F C6 36a ld h~S6 369 ;
OE60 3CF3 370 ld ,timr21 37t J
OE62 3809 372 ~dd ~,f9 373 ~
OE64 6EB7 374 b int230 ;c-rry 'O' 37~ ~
OE66 3C6D 376 intllO ld ~,rnl ~<O00 N3 OE68 DO 377 cmpr ~,SO ;N3-O ?
OE69 OE 37B tC~tD 2f OE6A 88 379 b intlZl 3eo ~
0E68 Dl 381 cmcr ~,S2 ;N3-1 ?
OE6C OE 3e2 t-5ep zf OE6D 3E 383 b intl22 384 ~
OE6E D2 38S cmpr ,~2 ;N3-2 ?
OE6F OE 3a6 t--tp ~f 0E70 6Ee3 387 ~ int123 38a ~
3e9 ; N3-3 I J"lZ
0E72 OC 390 ld ~,~hl 0E73 3821 391 or ~,fl 0E7~ 0F 392 st ~,~hl OE76 6EB7 393 b ~nt130 394 ~
OE78 OC 39S int121~ ld ~, ~h 1 OE79 3828 396 or ~,S~
OE7~ OF 397 ~t ~, ~hl OE7C 6EB7 398 h Lntl30 -CP/~ TLCS-47 ~SSE~BLER V2 2 P~GE 4 LOC 08J LINE SOUROE ~~ NT
399 f OE7E OC 400 intl æ s ld ~,Ohl OE7F 3824 Wl or ,~4 Ra~ PaGE NO ~8 ~
OEe~ OF 402 ~t ,Qhl OE82 87 403 b intl3C

OEe3 OC 40~ intl231 ld ~,~hl OEe4 3822 406 or ~,~2 OE86 OF 407 t ~,~hl OEB7 3C6D 409 intl30l ld ~,rnl OEB9 380l 410 dd ~,~1 OE88 3F6D 41l ut ~,rnl 4l2 ~
OE8D D4 4l3 cmpr ~ ~4 OEeE 98 4l4 b intl40 ;Jump on N3(4 41~ ;
OEBF 40 416 ld ~,~0 OE90 3F6D 417 ~t ~,rnl ; N3< - O
418 ~
OE92 3C6C 419 ld ~,rnn OE94 3B01 4ZO ~dd ,~1 ~( NZ+l OE96 3F6C 421 ~t ~.rnm 4æ ;
OE9e D8 423 cmpr ~, ~e OE99 OE 424 t-~tp z~
OE9~ R8 42~ b intl~O ;Jump N2-e 4Z6 ~
4Z7 ; ~ tting ti~rr2 42e ;
OE9B 4F 429 intl40~ ld ~,~h'f OE9C 3FF~ 430 ~t ~,tirr2h OE9E 3FF9 431 ~t ~,timrZm OE~O 40 432 ld ~,~0 OE~l 3FF8 433 ~t ~,timrZl -434 ~
OE~3 48 435 ld ,ze OE~4 3~8D 436 out ~,~opld OE~6 6EE7 437 b r tZ
438 ;
439 ;;; d~t~ ch-ck S conv rt 440 ;; ch ck cod- w~- comol-t- or not 44l $
OE~8 EO 442 intl~O ld 1,~0 0E~9 0C 443 ld ~,Qhl 444 ;
OEP~ Dl 44S cmpr ~,tl OE~8 6EE0 446 b intl60 447 ~
OE~D E3 448 ld l,~3 449 ;
OE~E OC 4~0 ld ~,ehl ~ 338044 CP/~ TLCS-47 ~SSE~8LER V2 Z
PaOE 5 LOC 08J LINE SOURCE SI~T~ _~
451 l OEPF DD 452 c~pr ~.rh'd OB O 6EEO 453 b intl60 ~r~c-iv d d~t~ w~- rror ~S4 ~
455 l ch k d-t- w~s comDl-t- or not OB 2 4F 457 ld ,~h'~
4~8 ~
OFR~ E7 459 ld 1,~7 460 ~
OB 4 lF 461 xor ,~hl 462 ~
OB~ E5 463 ld ~,~5 464 ~
OB 6 16 465 cmpr ,Qhl OE87 6 OE O 466 b intl60 ~d~t- w~s not complcee 467 ~
46e ; d-t~ conv rt 469 ~
0~9 OC 470 ld ~,Qhl 471 ~
OE~ DO 472 cmpr ,CO
OE88 0E 473 tc-tp 2 ~
OB C 6EC2 474 b intl71 47~ ~
OE8E 4C 476 ld ~h'c OE8F 3FFD 477 ~t ~,dcm ~d-t~ count~r s~tting RO~ P~GE NO 59 ~
OEC1 BS 478 b int172 479 ~
0EC2 4D 4eo int171l ld ~,~h~d OEC3 3FFD 4el ~t ~,dcm ;d-t~ count-rs-ttins 4e2, OECS 19 4e3 inel72~ d c l ;l< - ~4 4~4 ;
0EC6 OC 4e~ ld ~,Qhl 4e6 ~
OC7 3FFC 487 st ~,dcl ;d~t~ count-r ~-tting 4~6 ;
OEC9 4F 489 ld ,~h'~
OEC~ 3FFE 490 st ~,dch ; d~t~ count-r s~tting 491 ~
492 ;;
0ECC 33 493 ldl ~,Qdc OECD 31 494 xch ~,l 49~ ;
0ECE 32 496 ldh ~,Qdc 0ECF 30 497 xch ~,h 49~ ;
OEDO æ 50 499 c~ll kcysO
500 ;
0ED2 3930 5al ct sDuvsh,3 ; rvmotr fl~g on 502 ~

~ 33804~

CP~ TLCS-47 ~SSE~BLER V2.2 PcGE 6 LOC 08J LINESOURCE STaTE~ENT
503 l~tting ti~nr2 OED4 4F 504 ld ,~h'~
00 5 3FFR 505 t .h~--OED7 43 506 ld .2h'3 OEDe 3FF9 507 ~t ~ h~ 9 OED~ 40 508 ld ,2h'0 OED8 3FFe S09 ~t ~. h' ~e 510 ;
OEDD 48 511 ld ~. ~8 OEDE 3aBD 51Z out .~opld l 513 ~
514 1~ N~-O
515 ;
OEEO 40 516 int160~ ld . tO
OEE1 3F68 517 ~t ~.rnh OEE3 3F6C 51~ ~t ~rnn OEE5 3F6D 519 t ~rnl ~20 l 5Z1 lll rrturn routinr sæ 1 OE~ 2968 5Z3 r t2: xch hl,r~mol OEE9 47 5Z4 ld , rOl 1 lb oEEa 36AF 525 diclr il, lOllllb OEEO 13 526 xch .-ir OEED 3c6a 5Z7 ld ~. rnmo-52e ll OEEF 3846 529 clr %opO6.0 530 ~
OEF1 Z8 531 r-ti 532 ;~
533 l 534 ;
535 l 536 nd ~SSE~8LY CO~PLETE. O P~OO,i~ ERROR~S~

CP/~ TLCS-47 ~SSc FR V2.2 P~6E

SY~80L T~8LE
* CO~aD 0013 * W ~fC 0015 ~ C0~6R 0014 * DATACT 0200 DCH OOfE DCL OOFC DC~ OOfD * DISP~ 0032 * DISPH 0031 * DISPIW 0034 * DISPL 0030 ~ DISPLW 0033 IN2000 OE28 * INCOTH 0038 * INCOTL 0039 * INCOT~ 003A
INT100 OE5C * INTllO OE66 INT121 OE78 INTlZ2 OE7E

INT160 OEEO r NT171 OECZ INT172 OEC5 INT200 OE24 INT210 OE3E INTZll OE49 INT212 OE W * KEST 0043 * KESTOH OOZ3 * KESTOL 002Z * KESTlH 0025 * KESTlL 0024 KEST2H 0027 * KEST2L OOZ6 * KEST3H 0029 ~ KEST3L OOZB
~ KEST4H 0029 * KEST4L 002P ~ KEST8H 0041 ~ KEST8L 0040 * KEYND 002C * KEYNN 002D ~ KEYOD 002E * KEYON 002F
KEYS 0100 KEYS8 02~0 ~ KEYSC OOOE ~ KEYT8 00C8 * LCICOT OOOD * LDATLl 0037 * LDATL2 0038 ~ LDaT~l 0035 LDAT~2 0036 * LDISP 0800 * LECOTH 003E * LECOTL 003C
* LEW T~ 003D * LIOVFl 0600 * LIOVF2 O W O * L~IN 03EO
LTP~8LE 0000 * LVLFEX OCOO ~ OVERal 0012 * OVERHl 0011 * OVERLl 0010 * PARITT OOOC * PaRITY 0008 * RE~DO 0060 ~ REYDl 0061 * RE~D2 OQ62 * RE~D3 0063 *-RE~D4 0064 * RE~D5 0065 * RE~D6 0066 ~ RE~D7 0067 RE~Oa 006A
RE~OH 0069 RE~OL 0068 RETZ OEE7 * RKCE 0050 RNH 0068 RNL 006D RN~ 006C * RWRPCH OOCA
* RWRPCL OOC8 - 4 RWRPC~ OOC9 ~ SERVRC OOOF * SPUCP 0021 * SPUSH 0003 * SPUSK 0020 ~ SPUSL 0002 * SPUVD~ 0004 SPUVSH 0000 * SPUVSL 000~ ~ SPUVU~ 0001 ~ SPW OOFF
* SPW8 00C7 TI~R2H 00Fa TI~R2L OOF8 TI~R2~ 00F9 { TI~RHN OOF6 * TI~RHO 0018 * TI~RLN 00F4 * TI~RLO 0019 * TI~R~N 00F5 * TI~R~O 001~ ~ VDaTaH 0018 * VDaT~L 0017 * VLFC OOOA * VLFEC 0016 ~ VLFR8 0009 * VLFT8 OOOB
* VLFTH 0007 * VLFTL 0006 ~ VLFXa 0052 * VLFXH 00~1 * VLFXL 0050 * WaRPCL OOC4 ~ WARPC~ OOC5 DEFINED 123 USER SY~80L~S~

161 l 338044 CP/~ TLCS-47 ASSE~BLER VZ 2 PaGE
.
LOC OBJ LlNE SOUROE STblt~JiT
l; . : ;
2 ; 7 19e3 3 ; ubrouein- V1 0 4 T (T~P4740P) ~; ;

8 ;

~noli~t ~ t 2e9 T
RO~ PaGE NO
0050 290 org h~O50 0050 3C17 292 rkc-~ ld a ~pu~r 0052 DF Z93 cmpr a,rh'~
0053 98 Z94 b rkc-5 295 ~
0054 40 Z96 ld a,~h'O
0055 3F17 Z97 .e ~,.Dur-0~57 ~B 29e b rkce4 ; to r-turn Z99 ~
0058 3C23 300 rkc-~ ld a,~pu~k 005~ 3E24 301 cmpr a, ~DUCp 005C ~C 30Z b rkc-O ; br~nch on - 303 T ~Du-h(~ ~OUCD
005D 394F 304 clr -rvrc,O ; cl-ar ~ervicc re~
u~t 005F 3942 306 clr Du-l,O ; now cnar~ctcr ava ilabl-307 ;
0061 4F 30e ld ,~h'-0062 3F42 309 ~t a,k-~tOl 0064 3F43 310 ~t ~,k-~tOh ; no k-ystro~e 3~1 ;
31Z ; ~pu-k, ~pUCD clc~r 313 ;
0066 40 314 ld a,~h'O
0067 3F23 315 ~t a ~DU~k 0069 3FZ4 316 ~t ~,~pucc 317 ;
312 T return 006B Z~ 3ZO rkce4 r-t 321 ;
3ZZ ;
323 ; bu~--r CP/~ TLCS-47 OSSEh~LER VZ 2 LOC OBJ LlNE SOURCE ST~TE~ENT
324 ~
006C 3CZ4 32~ rkesOI ld~ ~pucp 006E 08 326 ine 006F 3FOE 327 st ~,keyse 32e ~
0071 3COE 329 rke-1l ld~,k-y e 0073 05 330 role 0074 383E 331 ~nd ~,~lllOb 332 ~
0076 31 333 xch ~.1 0077 C4 334 ld h,~h'4 33~ 1 0078 OC 336 rke-2 ld ~,Ohl 0079 388E 33e ~dd l,Sh'- ; 1< 1-2 339 ~
007~ OF 340 st ~, Oh 1 341 ~
007C 3883 342 ~dd 1, 2h~ 3 7 1~ 3 343 ;
007E OC 344 ld ~,Ohl 34~ ~
007F 38BE 346 rke-3 ~dd1, ~h~ 5 1 < 1-2 3~7 J
ROh PoGE NO 2 ~
0081 OF 34e t ~, Oh 1 349 ~
0082 3883 3~0 ~dd 1,~h'3 3S1 ~
0084 389C 3~2 cmPr l,th'e ; buff-r Dottom ?
0086 6078 3~3 b rkc-2 3~4 ~
0088 2FFE 35~ ~dd k-y~e,~h~f ; k-yse(- keysc-1 3~6 5 008~ 2ElE 357 empr k yse,~h~1 008C 6071 3~a o rke-l 3~9 ;
360 ; 5pu-k<~ ( 5Dusk-spuep ) 008E 04 362 t - stp C- ; cf < -363 ;
OOaF C2 364 ld h,~h'2 0090 E3 36~ ld 1,~h'3 ; sou~k - m( hl ) 366 ;
0091 3C24 367 ld ~,5puep 368 ;
0093 14 369 ~uorc ~,Ohl ; spusk-spuep 370 ~
0094 OF 371 5t ~,Ohl 372 ~
009~ 40 373 ld ~,fh'O
0096 3F24 374 ~t ~ ~puCp ; souCp ~ O
37~ ;

CP/~ TLCS-47 ~S5E~8LER V2 2 p2GE 3 LOC oaJ LINE SOURCE Sl~lt~_~T
ooge 606a 376 b rkc-4 ~ e~ r~turn 377 ~
378 ;

ROh P~GE NO
0100 3eo org h'100 3el ;
0100 4F 382 k~ys~ ld ~,th'-0101 3FOE 383 t ,k y c 0103 3F29 3a4 ~t ~,ksynd 3e~ 1 0105 EO 3e6 ld l,Sh'O
0106 4E 3e7 ld ~,rh'-3ee T
0107 3aa5 389 k-y001l out ~,~opO5 390 ;
0109 Z300 391 c~ll k-yt ; tim r OlOB 30 3g3 ~ch ,h 394 ;
olOC 3a27 395 in ~ioO7,~ ;
396 ; - `
OlOE DF 397 cmor ~,~h'~ ;
OlOF OE 39e t-~tp 2 0110 98 399 b k yO02 ~,00 ~
0111 le 401 inc 0112 3F29 -402 ~t ~,k-ynd 0114 3COE 403 ld 4 k-y c 5 0l16 3F2a 404 ~t ~,k-ynn 405 ;
Olle 2FlE 406 k-yO02~ ~dd k-ysc,~l ;
011~ 2E3E 407 cmpr k-y~c,~h~3 OllC 82 408 b k-yO03 409 ;
OllD 2CFS 410 out ~h'-,~ooO5 OllF 3a74 411 clr XooO4,3 412 ~
0121 2300 413 c~ll k-yt 414 ;
0123 3~27 415 in XipO7~ ;
0125 3a34 416 ~t XopO4,3 417 ;
0127 DF 418 cmor ~,~h'-012~ OE 4L9 tCSto Zf 0129 ~6 420 b k-yO04 421 ;
012P 13 422 inc 012D 3F29 423 ~t ~kcynd 012D 3COE 424 ld ~k y-c 012F 3F2R 425 ~t ~,k-ynn 0131 ~6 426 b k-yO04 427 ~

-CP/~ TLCS-47 ~ssE~sLER V2 z P~GE 4 L~C osJ LINE SOUROE ~1~l~ _~
0132 30 42e kcyO03~ ~ch ~h 0133 05 429 r3lc 0134 e7 430 b k yOOl 0135 e7 431 b k yOOl 432 ~
0136 30 433 k-yO04 xch ~ h 0137 3C29 434 ld ~,k ynd 435 ;
0139 DF 436 cmpr ~. ~h~-013P OE 437 t--tD Z~
0139 617D 438 b k yOOS I k~y r-l-~c~
439 ~
013D 3egl 440 cmpr l,~h~l 013F OE 441 t.. eD zr RO~ P~GE NO S
0140 82 44Z ~ k y oe O
0141 83 443 b kcyO06 7 444 ~
0~42 3C29 445 k-yO20 ld ~,k-ynd 446 ~
0144 DE 447 c~pr ~h~n ~ 0145 OE 44e t-~tp 2-0146 91 449 b k y021 4~0 ~
0147 DD 451 cmpr ~.~h~d 014e OE 4S2 tc~tp 2-0149 91 4~3 b k yOZl 454 ~
014~ D8 4S5 cmpr ~. ~h~ b 0148 OE 4S6 t-~tp z~
014C 91 4S7 b k-yO21 45e ;
014D D7 4S9 cmpr ~, ~h~7 014E OE 460 tc~tp z~
014F 91 461 b knyOZl 0150 83 462 b k yO06 463 ~
0151 3CZ9 464 k~yO21~ ld ~,kcyod OlS3 3E2s 465 cmpr ~, k-ynd olss ~e 466 b k yO07 467 ;
OlS6 3c2C 46e ld ~,kcyon 0158 3E2A 469 c~pr ~ k-ynn 015~ ~e 470 b k y007 471 ;
olss 3sEo 472 tC~tD puv~h,Z
olsD Be 473 b k-yO22 474 ~
47S ~
015E 3985 476 k-yO30~ t~t ~Duv~l~o 0160 sz 477 b k-yO10 47e ~
479 ;

1 33804~

CP/h TLCS-47 ~SSE~8LER væ 2 LOC OBJ LINE SOURCE 5r~l~ _NT
0161 2200 480 c-ll d~t ct 0163 22~0 482 c~ll k y-b ~e3 484 ~
0165 3945 4e~ clr puv~l,O
0167 ~A 4e6 b k-yO08 487 ~
016e 3905 4e8 koyO07~ t ~puv-l O
489 ~
016A 3C29 490 koyOOe ld ~,k-ynd 016C 3f2B 491 t ~jkcyod 016E 3C2A 492 ld ~,koynn 0170 3f2C 493 .e ., k~yon 494 ~
49~ 1 0172 2A 496 k-yO10~ r t ~r-turn 497 ~
0173 3945 498 k yOO61 clr puv~l,O
017~ 3920 499 -t ouv~h 2 0177 ~A SOO b k yO08 SOl ~
0178 390S S02 k yO22~ ~t ~Duvvl~o 017~ 3960 503 clr ~puv~h,2 017C ~A S04 b k yO08 S06 ~
~07 ;
017D 3C23 508 k-yO05 ld ~,k-yod 509 ;
017f DF 510 cmpr ~,~h'- ;
RO~ P~GE NO 6 0180 616a 511 b k-yO07 ~12 ~
OlB2 3985 513 t-~t ~Duv-l,O
0184 616A 514 b k-yO08 ~15 ~
0186 3945 516 clr ~puv-l,O

sle 0188 39S2 S19 clr Du~
S20 ;
018~ 6173 521 b k-yO06 sæ, 523 ;
RO~ P~GE NO
0200 524 org h'200 52S ~
oeoo 3C2P 526 d~t~ct~ ld ~,k-ynn OZ02 30 527 xch ~,h 528 ~

CP~ TLCS-47 ~SSEM8LER V2 2 - LOC OBJ LINE SOURCE ST~I~ _~
0203 10 529 mov h,~
OZ04 DF 530 empr ~,Sh'S J
0205 OE 531 t-~tp s~ ;
0206 ~ 532 b d-t-O4 3 ~ I
0207 3C29 534 Id ~k ynd 0209 5C ~35 e.. t ,0 OZO~ 9E 536 b d~t~Ol 537 ~
0208 5D 538 te~t 020C ~2 539 b d~t-O2 540 ~
020D 5E 541 tc t ~,2 020E ~6 542 b d~t~O3 543 ~
020F 30 544 xch ~,h 545 ;
0210 30 546 d-t~O5~ xeh ~,h oe 11 4F 547 ld ~,Sh'~
021Z 3FFD 548 ~t ~,de~
0214 3FFE 549 d~t~O6~ ~t ~,deh 0216 10 5~0 mov h,~
OZ17 3FFC 551 ~t ~,dcl 55Z ~
oel9 33 553 ldl ~,Ode 021~ 31 554 xeh ~55 ~
oelD 32 556 ldh ~,~de 021C 30 557 xeh ~,h - 3 sse ~
oelD 2~ 5~9 d~t~10~ r-t 560 ;
021E 30 561 d~t~Ol~ xeh ~,h OZlF 3824 562 or ~,Sh'4 OZl 90 563 b d~t~O5 564 ;
oez2 30 565 d~taO2r xeh ~,h 0223 3BZ8 566 or ~,Sh'8 oe25 90 567 b d~t~O5 568 ~
OZ26 30 569 d~t~O32 xeh ~,h OZ27 38ZC _570 or ~,Sh'e O Z9 90 571 b d-t~O5 57Z ~
OZZP 3C29 573 d~t~O4~ ld ~,k-ynd OZ2C 30 574 xch ~,h OZ2D 4E m ld ~,Sh'- ;
OZZE 3FFD 576 ~t ~,dem OZ30 4F 577 ld ~,Sh'- ;
0231 94 578 b d~t~O6 CP~I''I TLCS--47 p,5,~, FP~ VZ.Z
PaGE 7 LOC OEJ LINE SOUROE ~l~lt~h RO~ PP6E NO 9 oe~o 5e3 org h'2~0 5e4 ~
0250 2920 585 k-y-b~ xch hl,k--tbl 5e6 ~
oe52 3C23 5e7 ld ,-pu-k see 1 0254 391Z 589 SJt ou-l,1 ; k y curr~ntly dac r ~-ion 590 ~
02 X W 591 cmpr ,~h~5 0257 OE 592 t~ntp zf oe5e ~C 593 b kuy~b4 59~ ~
OZ59 3902 595 s t pu-l,O ; n~ ch~racter ava il~bl-596 ~
025~ 390F 597 s~t s rvrc,O ; ~rvice ruauest 59e ~
025D oe 599 inc 600 ;
OZ5E 3F23 601 t ,-pu-k 602 ~
0260 05 603 rolc 604 ;
0261 383E 605 and ,~h~-0263 31 607 ~ch a,l 60e ~ -0264 C4 609 ld h,~h'4 610 ~
0265 3C20 611 - ld a,k-~tbl 0267 OF 612 t ~,Qhl 613 ~

026e le 614 inc 615 ~
OZ69 3CZ1 616 ld ~,kQstbh 026~ OF 617 ~t ~,Qhl 61e ;
026C 2a 619 h-y-b4 r t RO~ PaGE NO 12 0300 6Z1 orq h'300 62Z ;
623 ; k-yt routin-624 ;
0300 3FC~ 625 k yt~ ~t ~,k-ytb 626 ~
0302 40 627 ld a,~h'O
629 ~
0303 oe 629 k-ytO~ inc a 0304 00 630 nop 0305 00 631 noD
0306 00 632 nop CP~ TLC5-47 ~SSE~8OE R ~2.Z
PaGE B

LOC Q8J LINE SQUROE 9l~lt~_~T
0307 OE 633 e-~tp ~-030e 8a 634 b k~yel 63~ ~
0309 83 636 b k-ytO
637 ;
030a 3C~8 63e k-ytls ld ~,k-ytb 639 ~
030C Z~ 640 r t RO~ PaGE NO.lZ
031~ 648 org h'31 649 ~
6~0 ~ l dd 6~1 031~ 10 6æ l-dd: mov h,~
6~3 ~
0316 SF 654 t--t ,3 0317 99 65~ b l-ddol 031e Q8 656 b l ddOO
6S7 ~
6~e ; ~-cii cod-6~9 ;
0319 3aO4 660 lcCdOl~ ~dd ~,rh'4 0318 3FFD 661 ~ ~,dcn 031D 4F 662 ld ~,rh' r 031E 3FFE 663 ~t ,dch 0320 31 664 xch ~,1 0321 3FFC 66~ t ~,dcl 666 ~
0323 33 667 ldl ~,Qdc 0324 31 668 xch ~,1 032~ 32 670 ldh ~,Qdc~
0326 30 671 xch ~,h 672 ;
0327 Z~ 673 r t 674 ;
67~ ;
676 ; for ~ch ~-gu-mrnt 0328 ~920 678 l~ddOO~ xch hl~k-~tb 679 ~
032a EO 680 ld 1,~0 0328 C2 681 ld h, æ
682 ~
032C 4F 6a3 ld ~,rh'f 03ZD lF 684 xor ~,Qhl 1 338~44 CP/~ TLCS-47 aSSE~SLER V2 Z

LOC 03J LINE SOURCE 5~1~ _~1 - 68~ s 03ZE OF 686 ~t ~, ~h l 687 ;
03ZF 18 6ee lnc 0330 ~F 6B9 ld a. ~h' f 0331 lF 691 xor ,~hl 033Z OF 692 5t a, ~hl 0333 2920 694 xch hl, kw~tbl 69~ t 033~ 2a 696 r t 69e 1 699 ~
700 lll 701 ~Is 70Z T~l ROh PRGE NO 13 03~0 703 org h' 3~0 70~ T la~h routin~

- 03~0 3C3~ 707 ~l~h~ ld ~,ld-tml 03~2 3F39 708 t ,lda-n1 03~4 3C36 709 ld ~,ld-tm2 03~6 3F3R 710 ~t ~,ld~-~2 03~8 3C37 711 ld ~,ld-tll 03~R 3F33 712 ~t ~,lda-ll 03~C 3C3e 713 ld ~,ld~tl2 03~E 3F3C 714 ~t a,lda-12 71~ 1 0360 3C33 716 ld a,di~Dlw 0362 ~C 717 t--t ~,0 0363 ~9 718 b l - h0 ; ~d not fla~hinQ

720 ; m~d ~l~-hing 721 s 0364 4F 722 ld a,~h'~
036~ 3F39 7Z3 ~t a,ld~-~1 0367 3F3R 724 ~t ~,ld--m2 7Z~ ~
0369 3C33 7Zs la-hOs ld a,displw 0368 ~D 7Z7 t-~t a,l 036C DZ 728 b ~ hl ; lsd not flashin~
729 ;
730 ; l~d fla~hing 036D 4F 732 ld 4 ~h'~
036E 3F3B 733 5t ~,lda511 0370 3F3C 734 st a,ld~-12 73~ ;
0372 3C34 736 la-hls ld a,di-Diw CP~ TLC5-47 ASSE~LER VZ 2 P~GE 10 LOC 08J LINE SOURCE ~I~Tt~
0374 5D 737 t--t ~.1 037~ 63ac 738 b fla~30 ~ indic-tor 'of-' 0377 ~C 740 t-~t ~.0 0378 6393 741 3 ~la~20 ~ indic~tor 'on' 74Z ~
743 ;
744 ; indic~tor la-hing 74~ ;
037A 3C36 746 ld ~,ld-tmZ
037C 3837 747 and a,~Olllb 037E 3F36 748 ~t ,ld-tm2 749 ~ -RO~ PaGE NO 14 0380 3C38 7~0 ld a,ld-tl2 0382 3837 7~1 ~nd a,tOlllb 0384 3F38 7~2 t ,ld~tl2 ~ indicator 'on' De riod 7~3 ~
0386 3C3A 7~4 ld ~,ld-~m2 0388 38za 7~ or a,~lOOOb 038P 3F3A 7~6 ~t a,lda m2 7~7 ~
038C 3C3C 7~8 ld a,ld~l2 038E 3e2a 7~9 or a,~lOOOb 0390 3F3C 760 t ~,lda~12 ; indicator 'off' o erlod 761 ~
039Z Z~ 76Z r t ?64 76~ ~
766 ~ indic~tor 'on' 767 ~
0393 3C36 768 fla~28t ld a,ld~tm2 039~ 3837 769 and ~,~Olllb 0397 3F36 770 t a,ldatm2 771 ~
0399 3C38 77Z ld ~,ldatlZ
039~ 3837 773 and a,~Olllb 039D 3F38 774 t ~,ld~tlZ
77~ S
039F 3C3A 776 ld a,lda~mZ
03al 3837 777 ~nd ~,fOlllb 03A3 3F3A 778 ~t a,lda~mZ
779 ;
03A~ 3C3C 7BO ld ~,lda-lZ
03A7 3837 781 ~nd ~,fOlllb 03A9 3F3C 78Z ~t ,ld~-12 03A~ ZP 784 r t 7e~ S
7e6 S indic-tor 'off' 7e7 s 03AC 3C36 788 fl~30t ld ~,ld~tmZ
.

.

CP/~ TLCS-47 RSSE~8LER v2 2 PaGE 1 1 LOC osJ LINE SOURCE ST~ I ~._~ I
o3aE 3s2e 7es or ~,~1080b 03~0 3F36 790 .t ~.ld~t æ
791 ~
03B2 ~r~ 792 ld ,ld-tl2 0384 382e 793 or ., ~lOO~b 0386 3F3e 794 ~t ~, ld-tl2 79~ ;
0388 3c3a 796 ld ~,ld- mZ
03sa 3828 797 or ~laoob 03~C 3F3a 798 t ~,ld-~m2 799 ~
o3aE 3C3C 800 ld ~,ld-~12 RO~ paGE NO. 1~
03C0 3828 801 or , ~lOOOb 03C2 3F3C eoz t ~, ld.. l2 eo3 ;
03C4 2a eo4 r t eo~ ;
806 nd RS~ Y CO~PLETE, O PROGfi~. . ERROR(S) 1 3381~44 cp/~ TLCS-47 aSSE~BLER vz 2 PaGE 12 sY~soL TaBLE
Cor~aD0013 * co~aH 0015 * co~L 0014 DaTaOl 021E
DaTao20222 DaTao3 0226 DaTRo4 022a DaTa0~ 0210 DaTao60214 { DaTa0H 0081 * DaTa0L ooeo ~ DaTalo 021D
* DaTalHOOB3 * DaTalL ooe2 * DaTazH 0085 * DaTazL 0084 * DaTa3H0087 * DaTa3L 0086 * DaTa4H 0089 * DaTa4L OOeB
DaTaCT 0200 DCH OOFE DCL OOfC DC~ OOFD
* DIspa0032 ~ DISPH 0031 DISPIW 0034 * DrspL 0030 D}SPLW0033 FLaszo 0393 FLas30 03ac ~ FLaSH 03~0 FLasHo0369 FLasHl 037Z * INCOTH 00sc * INCOTL oosa * INCOT~0osB * KEST oo æ KESTOH 0043 KESTOL 0042 * KESTlH0045 * KESTlL 0044 * KESTZH 0047 * KESTZL 0046 * KEST3H0049 ~ KEST3L 0048 * KEST4H 0048 * KEST4L 004 * KEsTsH004D * KEsTsL 004C KEsTsH 0021 KEsTsE 0020 KEyoos017D KEY006 0173 KEY007 016B KEyoos 016a KEYO100172 KEY020 0142 KEY021 0151 KEYO æ 017e * KEY0300lsE KEYND 0029 KEYNN 002a KEYOD 002~
KEYON002C * KEYS OlOO Kfyss 02~0 KEYSB4 026C
KEYSCOOOE KEYT0300 KfYTO 0303 KEYTl 030a KEyTsoocs * LCICOT OOOD LDasLl 203B LDasL2 003C
LDas~l0039 LDas~2 003a LDaTLl 0037 LDaTL2 0038 LDaT~I0035 LDRT~2 0036 * LDISP 0800 * LECOTH 0oaF
LECOTLOOBD * LECOT~ 0osE * LEDD 031S LEDDOO 0328 LEDDOl0319 * LIOVFl 0600 * LIOVFZ ODOO * L~aIN 03EO
* LRE~O OEOO * LTaBLE 0ooo ~ LVLFEX ocoo * ovER2a 0072 ~-OVER2H0071 * OVERZL 0o7o * OVERal OOlZ * OVERHl 0011 * OVERLl0010 * paRITT o0oc * paRITy 0008 * READC 0028 * REaDN0oz7 * REYDO 0060 ~ RE~Dl 0061 * RE~D2 0062 * RE~D30063 * RE~D4 0064 * RE~Ds 0065 * RE~D6 0066 * RE~D70067 ~ RE~oa 006a * RE~OH 0069 * RE~OL 006B
* RKCE 0050 RKCEO 006C RKCEl 0071 RKCE2 0078 * RKCE3007F RKCE4 0068 RKCE~ 0osB * RNH 006~
* RNL 006D * RN~ 006C * RWRPCH OOCR * RWRPCL 00ca * RWRPC~0oc9 SERVRC OOOF spucp 0024 SPUFF 0017 * SPUSH0003 SPUSK 0023 spusL 0002 * SPUVD~ 0004 SPUVSH oooo spuvsL 0005 * spuvu~ OOOl ~ spw OOFF
* SPWB ooc7 * TI~R2H OOFR * TI~R2L 0ofs * TI~R2~ 0oFs * TI~RHN OOF6 * TI~R~O 0018 * TI~RLN OOF4 * TI~RLO OOl9 * TI~R~N OOF~ * TI~R~O oola * VLFC oooa * VLFEC 0016 * vLFRs ooo9 * VLFT~ OOOB * VLFTH ooo7 * VLFTL 0006 * vLFxa 00~2 ~ VLFXH 0051 ~ VLFXL oo~0 * waRpcE OOC4 * waRpc~ ooc~ * WRITEH 0026 * WRITEN 0025 DEFINED 167 USER sy~soL(s~

CP~ TLCS-47 PSSE~DLER V2 2 P~GE

LOC O~J LINE SOURCE ~1 ~T~ ._,~T

3 ; d~t~ t~bl-~ I
6 ~
7 ; c_ ~d coding table RO~ P~GE NO 60 OF20 9 org h~fZO
OF20 O1 11 data h'O1 ~ '00' r-ad tatu~
OF21 lO 12 data h'lO ~ 'O1' indic~tor powcr cont rol OF æ lO 13 data h'lO ; '02' indicator mod-OF23 lO 14 data h'lO ; '03' d-vlcs input control OF24 lO 15 d~ta h'lO ; 'O4' d-vic- outout contro OF2~ lO 16 dat~ h~ O ~ 'O~' power r-lay control OF26 OO 17 data h'OO ; '06' cl--r diqpl~y OF27 lO le data h'lO I '07' d-vice disolay contr ol 19 ~
0F2e lO 20 data h'lO ; '08' ins rt ch~racter OF29 02 21 data h'02 ; 'O9' road d-vic- data OF2P 20 æ data h'20 ~ 'Oa' di-ol~y character at p cifi d po-ition OF23 OF 23 data h'Of ; 'Ob' conditional poll OF2C OO 24 data h'OO ; blank OF2D OO 2~ data h~00 ; blank OF2E OO Z6 data h'OO ; blank OF2F OO 27 data h'OO ~ blank 2~ ~
OF30 OO 29 data h'OO ; blank OF31 00 30 dat~ h'00 ; blank 0F32 OO 31 data h'00 ; blank OF33 OO 32 dat~ h'OO ; blank 0F34 OO 33 data h~ OO ; blank OF3~ OO 34 d~t- h'OO ; blank OF36 OO 3~ data h'00 ; blank 0F37 OO 36 data h'OO ; blank 37 ~
oF3e OO 3e data h'OO ; blank OF39 OO 39 data h'00 ; blank 0F3R OO 40 data h~ 00 ; bl~nk OF3~ 00 41 data htOO ; blank 0F3C 00 42 data h' OO ; blank OF3D OO 43 data h'OO ; blank OF3E OO 44 data h' 00 ; blank OF3F 20 4~ data h' 20 ; command expan~ion 46 ~
47 ;
4e ; a~cii coding 49 ~ _ RC~P~GE NO 61 1 33~04~

CP/~ TLCS-47 ~ssE~sLER VZ Z
paOE

LOC osJ LINE SOURCE ~~

OF40 50 org h~ {4 ~1 ~
52 ~ f40--4f 53 ~
54 ~
5~ ~ f40 --6~ -~ h'~ 'bl~n~' ~6 ;
OF40 FF 57 d~t~ h'ff OF41 FF 5e d~t~ h'--OF42 FF s9 d-t~ h'-f OF43 FF 60 d~t- h'ff OF44 FF 61 d-t~ h' ff 0F4s FF 62 d~t~ h'ff OF46 FF 63 d~t~ h~f-OF47 FF 64 d~t~ h'ff 6S ;
oF4e FF 66 d-t~ h' f-0F4s FF 67 d-t- h' ff 0F4a FF 6e d~t~ h'ff OF48 FF 69 d~t- h' ff OF4C FF 7o d~t- h' f-OF4D FF 71 d~t~ h' ff OF4E FF 72 d-t- h'f~
OF4F FF 73 d~t- h' ff 76 ~
0F50 FF 77 d~t- h' ff OF51 FF 7e d~t- h'ff 0F52 FF 79 d-t~ h'--0Fs3 FF eo d-t- h~--0FS4 FF 61 d~t- h' ff OF55 FF e2 d~t~ h' ~f OFS6 FF e3 d~t~ h' ff OF57 FF e4 d~t~ h' ff 85 ~
oFse FF e6 d-t~ h'ff 0F59 FF 87 d-t- h' ff 0Fsa FF ee d~t~ h~ff OF58 FF eg d~t~ h' ff OF~C FF 90 d-t~ h'ff OFSD FF 9l d~t~ h'ff 0F~E FF 92 d~t- h' ff OFSF FF 93 d~t~ h~ff 94 ;
95 ~ f60--6f 96 ;
OF60 FF 97 d~t~ h~ff OF61 FF ge d~t~ h' ff OF62 FF 99 d~t~ h' ff OF63 FF lOO d~t~ h' ~f OF64 FF 101 d-t~ h~ff OF65 FF 102 d~t~ h' ff OF66 FF 103 d-t~ h' f /r~l TLCS--47 aSSE1118LER V2. 2 paBE 3 LOC c~ LINE SOURCE 51~ l t, .~IT
OF57 FF 104 d~t~ h' ff oF6e FF 106 d~t~ h' ff OF6q FF 107 d~t~ hl f~
OF6R FF loe d.t-- h' OF6s FF lO9 data h' ~f OF6C FF llO d--t. h' ff OF6D FF 111 d~t~ h' ~f OF6E FF llZ d--t, h' OF6F FF 113 d~t~ h' 114 ~
1 lS ~ 7~f7-116 ~ -OF70 co 117 d,t a h ' cO ~ O
OF71 F9 lle d.t~ h' f9 ~ 1 OF7Z a4 1 19 d~t a h ' ~4 ~ 2 OF73 80 120 d--t. h' bO ~ 3 OF74 99 lZl d~t~ h' 99 ; 4 OF7S gZ lZ d--t, h' 92 ~ 5 OF76 e2 lZ3 d--t-- h' 82 ~ 6 OF77 De 124 dat~ h' ds ~ 7 12S ~
OF7e 80 lZ6 d~t-- h' eo ~ 8 OF~9 90 lZ7 d--t-- h' 90 ~ 9 OF7R FF 12e d~t~ h' ff ~ bl~nh lZ9 d--t-- h' c9 ~ 11 OF7C FF 130 d~ta h' ~f 7 bl--nk OF7D ~7 131 d--t~ h~ b7 ; ~
OF7E FF 132 dat-- h' f~ ; bl~nk ~oF7rF FF 133 d~t~ h' ff ; bl~nk 134 ~
13S ~ ~eo-fef ROI~I PRGE NO 62 OFeo FF 137 d--t~ h~ fr ; bl~nk oFel ee 13e d~t- h~se ~ ~
oFs2 83 13g d.t-- h' 83 ~ b oFe3 C6 140 d--t~ h~ c6 ; C
oFe4 ~l 141 d~t~ h' ~1 ~ d OFeS ec 14Z d~t-- h' 86 ; E
OFe5 sE 143 dat~ h' 8. ~ F
OFs7 sz 144 d--t~ h' 82 ; B
14S ~
OFse es 146 d--ta h' 89 ; H
OFss CF 147 data h' cf OFsR El l48 d~t~ h' ~
oFss FF 149 d~t- h' ff ; bl~nk OFsC C7 lSO d--t~ h' c7 ; L
OFeD FF lsl d--t-- h' ~f ; bl~nk OFsE FF 15Z d--ta h' f- ; blank OFsF co lS3 d~t~ h' cO ; O
lS4;
lss ~ ~90--fs~

, CP~ TLCS-47 ~SSE~BLER V2.2 PoGE 4`

LOC OSJ LINE SOUROE ST~TE~ENT
156 ~
OF90 8C lS7 d-t~ h'8c ~ P
OF91 FF 158 d-ta h'ff ; blank OF92 OF 1~9 d~ta h'~f ~ r OF93 92 160 d-ta h~ 92 I S
OF94 FF 161 data h~ ff ; bl-nk OF95 C1 16Z dat- h'cl 3 U
OF96 FF 163 dat- h~ ff I bl-nk OF97 FF 164 d-t- h'-- ~ blank 16~ ~
OF9e FF 166 dat- h~f I bl~nk OF99 FF 167 d~t~ h'-- ~ blank OF9a FF 168 data h~ff I bl~nk OF9D FF 169 d~ta h'~f ~ blank OF9C FF 170 data h'ff I bl~nk OF9D FF 171 i-t~ h'ff ; blank OF9E FF 172 dat- h'ff I bl~nk OF9F 3F 173 d-t~ h~bf I bl~nk 1 7~ ; ~0 176 ~
0F~0 FF 177 data h'f- I bl~nk OF~1 88 178 data h'88 ;
oF~2 83 179 d~t~ h'83 I b OF~3 C6 180 data h~ c6 ; C
OFa4 ~1 181 dat- h~-1 ; d OF~ 86 18Z dat- h'86 ; E
OF06 8E 183 dat~ h'8- ; F
OF07 82 184 d-t~ h~8Z ; G
185 ;
OF~8 89 186 d-ta h'89 I H
. OFO9 CF 187 d~t~ h~f ; I
OF~P E1 188 d-t- h'-1 ; J
OFRa FF 189 d-t~ h'ff ; blank OF~C C7 190 dat~ h'~7 ; L
OF~D FF 191 d-t- h~ff ; blank OF~E FF 192 d-t~ h'ff ; bl~nk OF~F CO 193 d-ta h'cO ; O

195 ; fbO-fbf 196 ;
OF~O 8C 197 dat~ h'8c ; P
OF31 FF 198 d~ta h'ff ; bl~nk OF~2 ~F 199 d-t~ h~f ; r OF~3 92 200 d~t~ h'92 ; S
OF~4 FF ZOl dat~ h'ff ; bl~nk OF85 C1 202 d-e~ h'~l ; blank OF~6 FF 203 d-t~ h'ff ; bl~nk OF~7 FF 204 d-t~ h'f- ; bl~nk OFB8 FF 206 dat~ h~ff ; bl~nk OF89 FF 207 d~t~ h'-f ; blank OF3~ FF 208 data h'ff ; bl~nk OF3B FF 209 dat~ h'-- ; blank OF3C FF 210 data h'f- ; bl~nk .

CP/~ TLCS-47 ~SSE~DLER V2.Z
PqGE 5 LOC ODJ LlNE SOURCE Srb~
OFDD FF 211 d~t~ h'ff ~ bl-nk OF3E FF 212 d~t~ h'ff l bl~nk OFBF FF 213 d~t~ h'ff ~ bl-nk 214 ;
21~ ;
216 ;~rrmot- control d~t~

ROh PaGE Na.63 OFCO 218 org h'fcO
219 ~
OFCO FF 220 d~t~ h~ff OFC1 FF æl d~t~ h'f~
OFC2 FF 222 d~t~ h'ff OFC3 FF 223 d~t~ h~f~
OFC4 13 2Z4 d~t~ h'13 ~ on / off OFC~ 11 22~ d~t~ h " l ~ ~-nt OFC6 FF 226 d~t~ h'ff OFC7 16 227 d~t~ h'16 ; cl-~r OFC8 FF 22B d~t~ h'ff OFC9 FF 229 d~t~ h~ff OFC~ FF 230 d~t~ h'ff OFCB FF 231 d~t~ h'ff OFCC FF 232 d~t~ h'ff OFCD 12 233 d~t~ h'12 ; ~uth OF OE FF 234 a~t~ h~f~
OFCF 17 23S d~t~ h~l7 ; ~ond 236 ~
OFDO FF 237 d~t~ h'ff OFDl 38 238 d~t~ h'38 ~ e OF02 34 239 d~t~ h'34 3 4 OFD3 10 240 d-t~ h'10 ~ ~
OFD4 32 241 d~t~ h'32 ; 2 2FDS 14 242 d~t~ h'14 ; -OFD6 36 243 d~t~ h'36 ; 6 OFD7 FF 244 a~t~ h~ff OFDe 31 24~ d~t~ h'31 ; 1 OFD9 39 246 d~t~ h'39 ; 9 OFD~ 3S Z47 d~t~ h'3~ ; S
OFDD FF 248 a~t~ h'ff OFDC 33 249 d~t~ h'33 ; 3 OFDD 30 250 d~t~ h'30 ; O
OFDE 37 2S1 d~t~ h'37 ; 7 OFDF lS 2S2 d~t~ h'lS ; ~c~n 2S3 ;
2S4 ;
Ra~ P~GE NO.63 OFE7 2S~ org h~f-7 Z~6 ;
257 ;~ k-y~c~n d~t~
2S8 ;
OFE7 37 2S9 d~t~ h'37 ; '7' 178 ~ 338044 CP~h TLCS-47 ASSE~LER VZ.2 LOC OB~ LINE SOURCE ~h It.. _~
OFEB OO 260d~t ~ h 00 OFE9 OO Z61d~t~ h 00 OFEA OO 262~ d~e ~ h 00 ~ no us~
OFE8 32 263d~t~ h 32 ~ '2' OFEC OO 264d~t ~ h 00 ~ no u - -OFED 34 26~d - e~ h 34 3 '4 OrtF 13 266d - t - h 13 l ' on~of~
OFEF OO 267d~e~ h 00 ~ no usn 0FFO 14 z6ed~t~ h 14 1 '-' OFFl 1~ Z69d~t~ h 15 ~ pc/f~ n OFF2 16 270d - e~ h 16 ; ~' OFF3 36 271d~t~ h 36 ; '6' OFF4 17 272d~t ~ h 17 ~ ~ s~nd OFF5 OO 273d - t ~ h 00 ~ no usn 0FF6 OO Z74d~t~ h 00 ; no u-n OFF7 12 Z75d - t~ h 12 ; ~uth OFF8 lO Z76 . d - t~ h 10 OFF9 11 Z77d - t~ h 11 ; sJ- v~nt OFFA 35 278d - t - h 35 ; '5' OFF8 33 279d~t~ h 33 ; '3 OFFC 30 Z80d~t ~ h 30 ; 0 OFFD 39 281d~t~ h 39 ~ '9' OFFE 3e Z8Zd~e~ h 38 ; 'e' OFFF 31 283d ~e ~ h 31 ; '1' 284 ;
28~ ;
Z86nd ASSE~8LY CO~PLETE, O PROGAA.; ERRaR~S~

- ~338044 CP~ TLCS-47 ~SSE~8LER v2.2 P~E 7 SY~80L T~8LE

DEF~N 0 0 USER SY~80L~S~

1 338~44 CP/~ TLCS-47 ~SSE~LER VZ.2 PRGE

LOC 08J LINE SOURCE STaTE~ENT
l; ;
2 ; 7.1983. ;
3 ; ldi~p.~-m V1.0 4 ~ ~T~P4740P) ~; ;
6 ; di~pl~y routin- ;
7 ~ ;
8 ~ ;
9 ~ ;

~noli~t ~ t ROh P~GE ~0.44 OBOO 304 org h'bOO
30~ 3 306 ; int-rrupt~ n-bl-30~-~
0800 3F3Z 308 ~t ~,di-p-0B02 44 309 ld ~,~OlOOb 0303 13 310 xch ~,-ir 0804 366F 311 iclr il,lOllllb 312 ~
313 ;
314 ;
31~ ; pu~h rogi~t-r 3~7 ;
0B06 2930 318 xch hl,di~pl 319 ;
320 3 count up l-d count~r 321 ~
0808 3C8D 322 ld ~,l cotl o~oa 08 323 inc 0~03 3F8D 3Z4 ~t ~,l-cotl 32~ ~
090D DO 326 cmpr ~,th'O
O~OE a3 327 b di~plO
328 ;
080F 3C8E 329 - ld ~,l-cotm 0D11 08 330 inc 0812 3F8E ~ 331 ~t ~ cotm 332 ;
OD14 DO 333 cmpr ~,rh'O
081~ 33 334 b di~plO
33~ ;

CP/~ TLCS-47 ~SSE~8LER V2 2 P~6E Z

LOC OBJ LlNE SOUROE ~I~T~ _~l 0816 3C8F 336 ld a,l coth 0818 08 337 inc 0819 3F8F 338 ~t ~,l coth 339 ~
0818 DO 340 cmpr a,~h'O
081C 83 341 b di~plO

344 ~ countnr ov r flow 346 ~ _ 081D 4F 347 ld a,~h'~
081E 3F8F 348 t a,l coth 08Z0 43 349 ld a,~h'3 0821 3F8E 3SO ~t a,l-cotm 0823 40 3~1 ld ~,~h'O
0824 3FBD 3~Z t a,l-cotl 3S3 ~
0826 3C33 3S4 ld a,di-plw ; invcrt flag 0828 3~
082e SE 3S6 t-~t a,2 0829 PF 3~7 b di~pl2 082~ 3838 3S9 nd ~,~lOllb 360 ~
082C 3F33 361 ~t ~,di-plw ; '1'-~'0' 082E 83 362 b displO
363 ;
082F 3e24 364 di~pl2 or a,~OlOOb OB31 3F33 36~ ~t ~,di-plw J '0'-)'1' 366 ;
367 ;
368 ~ l d on 36g ;
370 ;
0833 3C33 371 di~D10 ld a~di-plw 083S SE 372 t fft ~,2 0836 6863 373 b displl ; im-ginaly Dart 374 ;
37S ;
376 ; r-al part 377 ;
37e ~

380 ; lsd 'on' 0838 SF 382 t--t a,3 0839 684F 383 b di~pl3 ; lsd 'on' 3e4 ;
385 ; msd 'on' 0838 3837 387 ~nd ~,~0111b 083D 3F33 388 ~t ~,di-plw 083F 3C3S 389 ld a,ldatml -1~338044 CP~ TLCS-47 ~SSE~8LER V2 2 P~6E 3 LOC 08J LINE SOURCE sr~,. ,._N, RO~ P~GE NO 45 ~
0841 3~1390 out ~,%op01 0843 3C36 391 ld ~,ldat~2 OB45 3~P2 392 out ,%opO2 0847 3856 393 clr XoD06~1 -0849 38Z6 394 ~ t %opO6,2 39~ ~
0848 3925 396 s-t puv-1,2 ; 'k yccan ready' o 084D 6B89 398 b dl~p~O
399 ~
400 1 lcd 'on' 401 ~
084F 382e 40Z di-pl3~ or a,~lOOOb 08~1 3F33 403 t a,dl~pl~
404 ~
0853 3C37 -405 ld a,ldatll 085~ 3~1406 out ~,%opO1 OB57 3C38 407 ld a,ldael2 OB59 3~2408 out ~,%op0Z
OB58 3B16 409 ~-t %opO6,1 OB5D 3B66 410 clr XopO6,2 411 ~
OB5F 6a89 412 b dl-piO

415 ~ im gln~ly p~re 417 ~
418 ~ k-y c-n r-ady 419 ;
0861 3925 420 ~-t puv-1,2 421 ;
0863 SF 4ZZ di~pll~ t-~t ~,3 0864 89 423 b displ4 424 ~
425 ~ m d 'on' 426 ;
OB65 3837 4Z7 and ,~0111b 0867 3F33 428 ~t a,di~pl~
4Z9 ;
0869 3C39 430 ld ~,ld~-ml 0~6~ 3~1431 out ~,%opO~
086D 3C3~ 432 ld a,ld~m2 OB6F 3~Z433 out ~,~op02 434 ;
OB71 3826 435 ~-t XopO6,2 0873 3856 436 clr ~op06,1 437 ;
OB75 392S 438 s-t ~puv-1~2 ; kuy scan ready 439 ~
0877 68~9 440 b di-piO
441 ;
442 ; lcd 'on' CP/~ TLCS-47 RSSE~8LER VZ.2 paGE 4 LOC 08J LlNE SOUROE STR~ NT
443 ~
0879 3B28 444 di~pl4~ or ~,~lOOOb 087~ 3F33 44~ ~t ~,di-pl~

087D 3C3B 447 ld ~,ld~l~
087F 3P~1 448 out ~,%opO1 RO~ P~GE NO.46 ~
0881 3C3C 449 ld ~,ld--12 08e3 3Ra2 4~0 out ~,XopO2 4~1 ~
088~ 3816 ~Z ~-t %opO6,1 0887 3B66 4~3 elr %opO6,2 4~4 4~ ~
4~6 I r-eurn 4~7 4~8 ~
0889 Z930 4~9 di-piO~ ~ch hl,di-pl 460 ;
0888 47 K 1 ld ~,~h'7 46Z ;
088C 36~F K3 diclr il,lOllllb 464 ~
OB8E 3ClC K~ ld ,-irb 0890 13 466 xch ~,-ir 0891 3C32 K 7 ld ~,di~p~
Ka ;
0893 28 K 9 r ti 471 nd RSSE~LY CO~PLETE, O PR6~.~R.. ERROR(S) ~ 338044 cp/~ TLCS-47 ~ssE~sLER VZ.2 paGE 5 sy~oL T~sLE
* CO~D 0013 * co~r~H 00l5 ~ co~L 0014 ~ D~T~OH 0081 * DPT~OL 0080 ~ DPT~lH 0083 * D~T~lL 0082 ~ D~T~ZH ooas ~ DpTp~a ooe4 * D~T~3H ooe7 * D~T~3L ooa6 ~ D~TP4H ooes * D~TP4L 0088 * D~T~CT ozoo ~ DCH OOFE ~ DCL OOFC
DC~ OOFD DISP~ 0032 ~ DISPH 003l DISPIO 0889 DISPIW 0034 DIspL 0030 DISPLO 0833 DISPLl 0863 DISPLZ os2F DISPL3 os4F DISPL4 0879 DISPLW W33 EIRs OOlC FLaSH 0350 ~ INCOTH ooec ~ INCOTL oosP
* INCOT~ oosB * KEST 0022 * KESTOH W43 ~ KESTOL 0042 ~ KESTlH 0045 ~ KESTlL 0044 ~ KESTZH 0047 * KEST a 0046 * KEST3H 0049 ~ KEST3L 004e ~ KEST4H 0048 * KEST4L W4 * KESTSH 004D ~ KEST~L 004C ~ KEsTsH 0021 ~ KEsTsL 0020 * KEYND 0029 * KEYNN 002~ * KEYOD 002B ~ KEYON 002C
~ KEYS OlOO * KEysa ozso * KEYSC OOOE * KEYT 0300 * KEYTB OOCB * LCICOT OOOD LDP,SLI 003B LDPSLZ 003C
LDRS~l 0039 LD~S~Z 003~ LD~TLl 0037 LD~TLZ 0038 LD~T~l 0035 LDPT~Z 0036 LECOTH oosF LECOTL oosD
LECOT~ oosE ~ LEDD 0310 * LIOVFl 0600 ~ LIOVF2 ODOO
* L~IN 03E0 LRE~O OEOO * LVLFEX woo * OVER2~ W72 * OVER2H 0071 * ovERa 0070 ~ OVER~l 0012 * OVERHI OOll ~ OVERLl OOlO * paRITT oooc ~ paRITy W08 * RE~DC oozs * REaDN OOZ7 * RE~DO 0060 ~ RE~D 1 0061 ~ RE~DZ 0062 * RE~D3 W63 * RE~D4 W64 * RE~D~ W6~ ~ RE~D6 0066 * RE~D7 0067 * RE~O~ 006~ * RE~OH 0069 ~ RE~OL 0068 * RK OE oo~o ~ RNH 0068 * RNL ~ ^ W6D ~ RN~ W6C
* RWRPCH 00CR * RWRPCL oocs ~ RWRPC~ oocs ~ SERVRC 000F
* spucp 0024~ * SPUSH 0003 ~ SPUSK 0023 * spusL 0002 ~ SPUVD~ 0004 SPUVSH oooo SPUVSL
* spw OOFF * sPws ooc7 * T~sLE woo * TI ~RZH OOF~
* TI~Ra ooFa ~ TI~RZ~ ooFs * TI~RHN OOF6 * TI~RHO 0018 * TI~RW OOF4 ~ TI~RLO 0019 * TI~R~N OOF~ * TI~R~O WlP
VLFC ooop ~ VLFEC 0016 ~ vLfRs 0009 * vLFTs W08 * VLFTH wo7 ~ VLFTL W06 ~ VLfX~ W~2 ~ VLfXH OO~l * VLFXL w~o * WaRPCL OOC4 * WARPC~ OOC5 ~ WRITEH 0026 * WRITEN W2 DEFIN0 137 USER sy~soL

- 1 3~80~

CP/~ TLCS-47 ~SSE~8LER VZ.2 P~GE

LOC 08~ LINE SOUROE ~I~l~._NT
~ ~ ;
2 ~ 7.1983. ;
3 ~ lt~blo.~ V~.O
4 ~ ~T~P4740P) ;
6 ~ t-bl~ routin- ;
7;
e;
g ~ ;

~noli~t ~ t 27 ; .
RO~ P~ OE NO. O
0000 28 org h'OOO
0000 63E0 Z9 b l~in 0002 6C00 31 b l v l f -32 ;
0004 Z8 33 r~ti 0005 00 34 nop 35 ;
0006 6600 36 b llovfl 37 ;
0008 6D00 38 b liovfZ
39 ;
000~ 6800- 40 b ldi~p 41 ~
000C 6E00 42 b l~-mo 43 ~
44 nd ~SSE~8LY CO~PLTE, O PROOR~.; ERROR~S) CP/~ TLCS-47 ~SSE~8LER v2.2 P~GE 2 SY~DaL T~8LE
LDISP 0800 L~OVFl 0600 LIOVF2 ODOO L~qIN 03EO
LRE~O OEOO LVLFEX OCOO
DEFI~ED 6 USER SY~80L(S) ~ 338044 CP/~ TLCS-47 ~SSE~8LER VZ 2 PAGE

LOC 08J LINE SOURCE STATE~ENT
1 ~ ;
2 5 7 1 se3. ;
3 T liov-2 ~smVl O
4-~ (T~P4740P~ ;
;
6 S r-m~e- con routin-7 ~ ;
8 ;
9;

~nolist ~ t RCh PAGE NO ~Z
ODOO 269 orq h'd00 270 ;

2~2 ~
273 ~ pu-h r-gist-r 27~ ~
ODOO 3F72 Z76 ~t ~,ov-r2-ODOZ 44 277 ld ~,~0100b OD03 13 Z78 xch ~,-ir OD04 366F 279 iclr il,lOllllb OD06 2970 2eo xch hl,ov-r21 281 J~
282 ~; tim-r2 ~top - 283 ~;
OD08 40 264 ld ~,~0 ODO9 3AeD 28~ out ~,%o~ld 2~6 ;;;;;;;3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
287 ;;;;;;;;;;;;;;;;;;;;;~;;;;;;;;;;;;;;;;;;;;;;;;;;
288 ;
2e9 ;; ch-ck Nl routin- -290 ~
OD08 3C68 291 ld ~,rnh ODOD Dl 292 cmpr ODOE 6D43 293 b r~mlOO ; Nl w~s not '1' 294 ;;
29~ ;; Nl-l 296 ;;
OD10 38D0 297 t-stp X00,1 ; ch-ck port for remotc OD12 AF 298 b r m200 ; oort w~s '1' ,it w~s nat ~t~rt bit 299 ;
300 ;; it w~s st~rt bit 301 ;

-CP/~ TLCS-47 ~SSE~8LER V2 2 P~GE 2 LOC 08J LINE SOUROE STaTE~fNT
OD13 42 30Z ld ~.~2 OD14 3F68 303 ~t ~,rnh I N2-2 304 ;
305 ~ ~-tting tim r2 OD16 3206 306 ~t ~oD06, 0 ODlB 4f 307 ld ~,Sh'f ODl9 3FFA 308 t ~,timr2h OD18 4D 309 ld ~,~h'd ODlC 3FF9 310 ~t ~,timr2r ODlE 47 311 ld ,f7 ODlF 3FF8 312 ~t ~,timr21 313 ;~
OD21 48 314 ld , se OD æ 3aeD 315 out ~Xopld ; timor2 ~t~rt 316 ~J
317 ~l r turn routLn~
3le ~, OD24 2970 319 rrm300~ xch bl,ov-r21 OD26 47 3ZO ld ~,~Olllb ODZ7 36aF 321 di~lr il,lOllllb ~ OD29 13 32Z xch ~,-ir OD2a 3C72 3Z3 ld ~,ovvr2 324 ;~
OD2C 3846 32S ~lr XopO6~0 OD2E Z8 326 rotl 328 ;~
OD2F 39F0 329 r m200~ t-~tp cuv-h,3 OD31 33 330 b r m210 331 ;
OD32 a4 332 o rwm300 ~ Jump to r-turn routin-333 ~
334 ;
OD33 3806 33S r m210~ ~t %opO6,0 OD35 4f 336 ld ~,Sh'f OD36 3FFR 337 ~t ~,timr2h OD3e 4S 338 ld ~,SS
OD39 3FF9 339 ~t ~,timrZn OD38 4E 340 ld ~,Sh'-OD3C 3FFe 341 t ~,timr21 342 ;;
0D3E 48 343 ld , ta OD3F 3a8D 344 out ~,Xopld 34S ;;
ROh P~GE NO S3 *

0D41 6D24 346 b rwm300 347 ;;;;;;;;;;;;;;;;;~;;;;;;
348 ;;;;;;;;;;;;;;;;~;;;;;;;
349 ;;;;;;;;;;;;;;;;~;;;;;;;
3SO ;
3Sl ~
3S2 ; Nl w~- not '1' 3~3 ;

`- - I 3 j7 8 0 4~4~

CP/~ TLCS-47 ~S~tr FQ V2 2 paGE 3 LOC 08J LINE SOURCE S-~l tn_N I
OD43 3C68 354 remlOO ld ~,rnh OD45 DO 355 cmpr ~,~0 OD46 OE 356 t- tp ~f OD47 92 357 b r-mllO
OD48 88 358 rrlOOOI b rolOOO
359 ;;
36a ~
OD49 40 361 r~ml20s ld ~,SO
OD4A 3F68 362 t ~rnh OD4C 3F6C 363 st ~,rnn OD4E 3F6D 364 st ~,rnl 36~ ~
OD50 6D24 366 b rrm300 367 ~s 368 ~;
369 ;s;
OD52 3980 370 mllOs t-~t puv-h,3 OD54 89 371 b r ml20 ~ Fl w~- not 'l' 372 ;
373 s d~t~ cr-~t routin- -3~4 ~
OD55 3970 375 elr spuv~h,3 376 ~
OD~7 3952 377 clr spu~l,l ; ~kry currrntly d-prr-ssed ) off 378 ~
OD59 6D24 379 b r m300 t r turn 380 ~
381 nd PISSE~8LY CO~PL_TE, O PRaaRA ERROR~S) CP/~ TLCS-47 ~SSE~LER V2.2 SY~OL TAqLE
~ CO~AD 0013 * CO~FC OOlS * C0~6R Oal4 * D~T~CT 0200 * DCH OOFE * DCL OOFC * DC~ OOFO * D}SP~ 0032 * DISPH 0031* DISPIW 0034 * O}SPL 0030 * DISPLW 0033 * INCOTH 003B* INCOTL 0039 * INCOT~ 003A * KEST 0043 * KESTOH 0023* KESTOL ooæ * KESTlH 002S ~ KESTlL 0024 KEST2H 0027* KEST2L 0026 * KEST3H 0029 * KEST3L 0028 * KEST4H 0023~ KEST4L 002A * KESTaH 0041 KESTaL 0040 * KEYND 002C* KEYNN -002D * KEYOD 002E * KEYON 002F
KEYS 0100 * KEYSq 02~0 * KEYSC OOOE * KEYT8 OOC8 * LCICOT OOOD* LDATLl 0037 ~ LOATL2 003e * LDAT~l 003~
.~ LDAT~2 0036* LDISP OBOO * LECOTH 003E ~ LECOTL 003C
* LECOT~ 003D* LIOVFl 0600 * L~AIN 03EO ~ LRE~5 OEOO
* LVLFEX OCOO OVER2A 0072 * OVER2H 0071 OVER2L 0070 * OVERAl 0012* OVERHl 0011 * OVERLl 0010 * PAR}TT OOOC
PAR}TY 0008 RE1000 OD48 RE~100 OD43 RE~llO ODSZ
RE~lZO OD49 RE~200 OD2F RE~Z10 OD33 RE~300 OD24 ~ RE~DO 0060* RE~Dl 0061 * RE~D2 0062 ~ RE~D3 0063 * RE~D4 0064* RE~D~ 006~ * RE~D6 0066 ~ RE~D7 0067 * RE~OA 006A* RE~OH 0059 * RE~OL 006e ~ RKCE OOSO
- RNH 0068 RNL 006D RN~ 006C * RWRPCH OOC~
* RWRPCL ooce* RWRPC~ 00C9 * OE RVRC OOOF * SPUCP 0821 * SPUSH 0003* SPUSK 0020 SPUSL 0002 ~ SPUVD~ 0004 SPUVSH 0000* SPUVSL OOOS ~ SPUVU~ 0001 SPW 00FF
SPW8 00C7 * TA8LE 0000 TI~R2H 00F~ T}~R2L OOF3 T}~R2~ OOF9* T}~RHN OOF6 * TI~RHO 0018 * TI~RLN OOF4 * TI~RLO 0019* TI~R~N OOFS * TI~R~O 001~ * VD~T~H OOle * VDRT~L 0017* VLFC OOOP * VLFEC 0016 * VLFR3 0009 * VLFT~ oooe* VLFTH 0007 * VLfTL 0006 ~ VLFXA OOS2 * VLFXH OOSl * VLfXL OOSO * WARPCL OOC4 ~ WARPC~ OOCS

DEfINED 116 USER SY~80LtS~

7 l (-G7 ~_ 191 ~FIL.: DROF7_R~T: UEH~R~i HEidLETT-P~iCE~RD: ~041 ~ 3Dnbl~r 1 3 3 8 0 4 4 LOCRTIOIY 08JECT CODE LIHE :30~ CE LI~IE
el Q 4 1 ~ * .4, . :~. f :k 6 ~ ' * ~ ' * ~' .,; ~ *
4 :-~ eQ4~ Drcp Prc.cc~3~r rlain R?ueine S i*
~ ;k~.~.*~*-t ~ ~**.~*** ~** ~*~*~*~ ~ r* ~ ~ * ~ ~* ~ ~ k-t-~*t~t-~*~***~*k~****~*t**t ? ; ~ c~ .c IJ ç i n~ Rc~is-,~r `~
~ Ban~ n ~ ;Rn ------ Genet-ai Re~ister --Con~cr~,-r 1Q ;~1 ~~~~~~ G~ncral Re~i~fer --Qecd in drQp pQII map

11 ;R2 ------ Gcncra1 Regi_tcr --C.~n~ertcr 1 :R3 ------ Cenel31 Pegist~r --Conu~rfcr , S~.ft cQunfer 13 ;R4 ------ G~neral Register , RF c3~1 s~if,ch ~ StQrc c3t~le num. ?
I 4 ; P~i ~~~~~~ Cc!une Icr f or cQ~Jnt Q 4 CIID
15 ,RB ------16 :R? ------ Ir,terrupt rQufir,e 3~ar~ address l7 : ---- ----_______ ---____.______ C;: . P Q r ~ ? ;~: ~ ?
1~ ;P1 5:? ~4~ ~3> '~2.,? ~ fQ.~ iubecrit~-cr `~l~ct 20 ;PI ~?? T~st 5~itch ~. R~et QUt ~1 lS J5. In .J-21 ;P4 ~3` ~'2` ~1;? ~Q~ 5c~n~:Drf-er CQntrQl 22 ;P5 '3:r '2~ 'l`r DrQF Scan S~itch 52,51,50 23 :P5 :1: 'r'LF QIJT
24 :P~ '2` '.1~ 'Q" PCIl.s~er ~'t'Ct I
2~ ;P~ ~'13 'Q> II
2B ;P. "~3 12~ ECU ~ddre~s 2? :
2~ :
2~ ;CODE ~ddress Gc~ment pin ~"Jt ilq? `;tl Gt~T 1 EQ~ OqqO1q~1e ; Tuning 9~ -3 1 Q 1 0001 3 1 rt~T Q EQU onn~qoqo1B ; TunincJ d~.a ' Q Q 1 COOOB~ 32 CLKr~T EQU OOQ01 OOQB .: Clocl: d3ls '1' Q n 'Oql~: 33 LOD~T EQU QOqQllqtqg : Load pu13c 1at3 1- r, :
on q4:` '4 Pl~!RGTn EQ~ n~ Qtq oe ; PQ~!Cr .~
C~oqC` 35 Pl~!RtiTI EQU OqqO11 9Qt~ pQ~d-cr Qn Q 4 ~Oqq3~ 3B C~BL_~ EQU OO~IqQqllB : Çat.1c 'e1ect. ~ ,.. .
<OOOB~ 32 Ç~BL_B EaU OOOOtO11e ; C3t1e ~elect e - Q :
~QQnD3 3Ç DETDi;T EQU OQQQl l Ole : P~ er check Q 5 'qoqc - 3~ r:i~BL--r EQIJ oqqnql 1 np : Cat~1c ~ole~ C Q B
s'OQQE 4Q S~12L G EQU nOOOl I I QB : C3blc ~;elc--~ ~ u 41;
4 2 ; ~~ ~ ~ ~ ~ ~ ~ ~~ '~tal i 3i~ I C c~n~t.ant --------------------------' iq q Q, ~ 43 CqU~IT_PS EQU 3 il4: ~4 Pri~.rit~ lct~el 44 ; ~~.~~~~~~~~ Bub. Cc~mmand _c.r, ~3ne ---------------------------45 ;GE'!CNT EQIJ OqH : [~euicC cc~i`.t-rQi 4~ ;r!ePClJT EQU QIH, Gcri~ di .~l3~ _r.ntrol 4?; ~ETG~T EQU Q2H : BCt d~t~ tc d-~ic~
4B : PEDG~T EQU 03H ; pc 3d d3t3 45t ; -- - ~~~~~~~ MemQr~,~ 1 Qc . ~~ ~ -~ ~~~ ~~~ ~ ~--- ~~ ~~ ~~~~~~ ~ ~~---~-~~ ~
SO ;L~;I head 3ddc~Fr ~:,.mm~nt, '002q~ 51 PWRGET EQU 2qH ; ~ mm3ici ~QQ~5H~INEL EQU ~IH i! c~inm~nd 0024 ~ 5~ ~tIC:t~tE~: EQU ;~4H i,t.l i~omm.a,nd SIlC
~' qO25~ 54 B~Gt1ES EQU ~iH n4 5~mm3ncl ; 002D~ S5 ~UePI~lR EaU 2DH : QS Cc!mmand ' OQ~F~ '5B JlJB-t~T E~U 2FH it~; 5mmmand ~'QQ31'~ PFQL EQil 31H ; i,t,- 5Qmm~nd APPENDIX B

~ 92 1 338044 FILEI DROP~_RST:IJEH~F~. HEIJLETT-P~CK~PD: 9rJ41 ~s~mLl~r LOC~TION OEJECT CODE LINE :r,lJplE LI~IE
'003~ ~P DE`/PnL EQ~I .'ÇH : Q9 Comm~nd ~OQS6~ ~? FQP94 EQU S~H ; 94 C~mmand Q ; _ -- -- -- -- -- _ _ -- -- -- -- -- -- -- -- -- -- -- _ _ _ _ _ _ _ _ _ _ ~1 QRG nH
0000 lS 62 PI9I ; Gisn3bl~ t int~orrurt OOQI Q4n9 63 ..IMP ~T~PT ; .t~r r~r-l'i4 QPG ~ :
ooQ'~ Ct~ ET~ ;
6,~ ; QRG .~ H
6.~; ~IMP TIMINT : TIMEP INT.
,~ ; ------ -- --------___--__----___--_____ ___ 6? 08G n?H
oQOCt 7Q ST;i~T:
. 1 : -OQO9 2B.'F .2 MQ~ ~,#Q-F'I
OQns 39 7 nlJTL P1,~ : PE5ET PIlL-E Fnp PEPTFEP~L PP~ E---nP
OOOC 23FF'4 MO`.~ ~#r!FF~
OOOE 39 S Ql!TL Pl ~ ~
OOOF FS , E~ FL~C9 : ~n3blo t-13~s. ISF.QP~F
0010 ~S~ 3 CLF Fl : Fl -- 'J2~ r ~-nmm3n~ h~3.~r ~ ~n 0011 3S .'t ST~PTl!: DIS T5~TI

31 ====-== Initi 31i-~ ==-============
32 : Q4 ~mm3nd buf~r c1~3r 0013 B826 33 MO~./ PO,#3NGME9~1 :
001S 8040 94 1'10Y eRq, #040H
8S;
36 : 94 c~mm3nd buff~r ~1~3r OQl~.88S7 3,' MQY PQ,#FOP34 1 OOt9 BOFF c~ Mn~ n~P Q ~ ~ OFFH
9;
001B B81C 90 MQV PQ.#Q1CH r~is~or b3nk 1 P4 OOlD B031 stl MrJ~ e~Q #r.~PPC~L ci~t~ ~rQr F~Qll m~F~ ho3-~
92 : t`~r int.~rrUFIt. initi3~ t3rt OOlF B831 't3 M~.J PQ, #DPPPOL
0021 BBO~ 94 MU~ P9 #.
0028 BOFF 9S INILPI MOY rtp q, ~ QFFH ~ P~' I l M3~ ini~li-.3t;~
002S 19 9~ INC PQ
Q 026 EB23 9' D ON P3 INILF1 ct3 0029 B833 99 MOY PO! #GEYPClL
002~t B~tO6 1 00 MO~ 2 . #~
002C BBOS 1QI I~IILP : MB~/ P~.#S : D ~i~o P~ll M3r. ir,it~ tl~r.
OQ2E BOFF 1Q2 It~ILP3: MOY epQ~#QFFH
0030 18 103 Ir~C PQ .:
0031 EB2E 104 DJ~I P3 INILP-Q033 E~Z5 lQ5 DQ~i8 P2 Ir~ILP
1Q~ ;
0035 F04 10~ MO~ P. #04H : Initi~li-_ 3d~1r~ F~ t~
108 t~.. r ine~rr~r~t r.~.~Jt i r,c - t. 3~- flr~
109 ;
00~2 2304 110 r10~ ~.#PIIppTh : ~11 cr ~rtcr s~itch ~ff 0039 14D2 111 C~LL ~LLC\IT
00-'8 2303 112 MO~ ~ #Ç~eL_~
003D 14D2 113 C~LL ~LLCNT
1t4 ; MQ~ C~BL_C ; Cl~3r 8lJ~-rir~cr d3t. 3 I ~ 193 1 338044 '!LE: DRO~P, R~T::!EM_r.~ HEI~L-rT-Fii~_M~RL;: 8041 ~ .h'~
LQCuTIQN QeJECT CODE LINE SQU--.'-E LINE
11~ CHLL uLLC~lT
116 :
003F S454 117 C~LL l-IIT_P POIJCr ~ C.-t, linC Initi~ t ion I 1~:

0042 230P 120 MO~ P,#OIO
on44 6~ 121 MOV T,F~ ; Tlm~r _o~Jntqr Sqt, 010~ ' 004S BD03 1~2 MOV R5,#COUNT_RS
123 ;

0048 4S 12S STRT CNT ; ==-- inltiali,~ nd =~==~==
126 : __________ __ 127 ~
0049 D676 128 ST~RT2: JNIBF CONTl ; IBF ull ?
004e 76S9 12a JFI SThRT3 : ---139 : Csse o~r using com~an-i port 004D 22 131 STûRT4: IN ~,QBB
004E 0449 132 JMP STF~RT2 ; Error -- Dat3 Qomminq Ign.~t~2t~
133 ;
0050 ~S 174 ST~RT3: CLR F1 : F1 flag clq3r OOS1 22 135 I~ P~DBB : Input Comman-~
OqS2 ~e 136 ~OY R3, a 0053 03F7 137 PDD ~ 9 : 1~ ~nter commln~ is in~lil ,,n~- ur. - ~.t~-n .,-nO! =
OOSS F649 13Z JC STPRT2 ; ~ input 0007 Fe 13q MOV P,R3 3 0058 03S8 140 ûDD ~,#COMMaND : .
OOS~ e3 141 JMPP eF~ ; E~ti~at~ jump so~ress 142 :
OOSE 64 143 coMMr~ND: DB COMO

oosE ,~ 146 DB COM3 0061 79 .14B DB COM6 0063 74 1S1 DB ConB
1S2 ;
0064 048F 1S3 COMO: JMP RESET : re-et comman~i 0066 04B7 1S4 COMl: JMP RPDL ; re3.i pow~r 'i6t,~Ct, lin~
on68 044q 15S COM2: JMP ST~RT2 : not ~ssiqnqd 006~ 04B4 1S6 COMZ: JMP CTFC co~man~i t~Jner ~ qlJ}n.-~: -r.~nq~
006C 04Du lS- COM4: JMP SMTD ; s~nd me3iaqe to ~ r~-r~n~
Od6E 244C IS8 COM5: JMP 5FC : subscri~er poI--~r.c~bl~ -cn~rol 0070 044? lS? 00I16: Jrp - ST~RT not 3ssign~d 00 2 247F 160 CqM.: JMP SDPS d:t`ine .iI~Op poll ,~.~.Jcn.-~
no,4 24G4 161 COMB: .JMP SGEP5 : d rin~ ievice p~ J~ns~ .
1~2 : --------------__-_______________________ 163 ~ Qomm3n,i r~spon~-00,6 e85. 164 CO!~TI- MO~ Ro~FqF'4~l ~s {~m~rIi .. ,~s .~ r-d 00 5 FO 165 MO~.J P,O~RO
00 B F284 166 Je- CI3I~T2 ~j'l.B 543~ '6.- E~LL- RESP8~ -OO-D 04~B I68 .!MP ;T~PT2 o . : -- -- -- -- -- -- -- -- _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .3n~ sp.~n~
~)0.' 2300 I,1 ~PT MO`.' u.~OOH :t~tl!F r~ 114 '~~ 194 -1 338044 FI~e: DF~nP~_P'T:UEr~'r~ E~FTT-FQr~prl: ~n4~ r~St~:~qn~ls--L0CaT101~ 08JECT C0DE LI~E SC~IP'E LII~E
0081 ~q 1,~ I~OY STS.a 0082 0449 1R' JMP STaRT2 174 ;
00~4 B~.6 1-~ CO~IT~: MO~' R0,#5NDME:~I
00a6 F0 1.-5 MOY f.~Rq 001~7 F249 1~7 J8i ST~RT2 : 04 r~sponsq is not -xi~t .retlJrn.
008? Q27F 1.8 JB5 STfRTS : ~4 rq~pontq i3 not ~ t!-~set t3tus ~ -t~rn.
1.9 :
908B S41D 18n Sr;LL RES04 ;-n~ to Q3t~ P~ -sssor 181 :
00.~3D 0449 182 JMP STftftT2 rqt,Jrr, ~ain rolJ'.inc 1513:
t S4 : k.4** t: t. t~*:~**-tç*******~ t** t r t: t t t Y t: t *~: t ~ 1. t-** t:*t*~:t ~t *~:t **t****t** 1 ***
1*5 :****t--~************~*~-*~ *-*.**~ ~***.,,.--- ~*:4:t **~:******
008F 6fl00 1:36 PE':ET: M0Y R2.#00 : cSqr~ q,ron~ "00~ bef~rq r~--~,.
00B1 Be01 13' h0Y R',*ol 00?3 34FC 188 CfLL RES0UT
00?S 0411 18q JMP STfRT0 : ~=5~S r'q~t =====
l~n ##*~ #*#*###*###~ ##
lel : 1 Re3d pot~or detect lins :: P-3-i ESU ~ ire3e 00~ OE 1~ PFDL: ~O~'Q f.P6 p.~l.ler ietqct 3 2 I n --00q8 S30F 193 ~I~L fr,#gFH
009fl aB 194 M0Y R3r~ :
oo~e OF l,S ~10YD f'-P~ p~ r ~1qt~ct ~ 4 19~ ECU ~ r~_c 00C 4. 1~ ~ilJap a 00~Q 4B lq3 OFL a.R~' ~ - p .~ t. I! S
009E BB20 199 MOY P0~#PWRCET
ooao ao 200 1~0~ eR0.ri 00a1 BP01 c01 MOY R-c,#01H
00A3 BB02 202 . MOY R3,#02H : c b~te 3end to ~i3t3 pr.7c-.ss~r ~ . 203 , ooa~ 34FC 204 caLL RESOUT : .~n.~ to B3t3 P~oc-~--or 00f~7 14~8 205 C~LL FS : r31l ilJbsc~ rs po~er ch~ck ooag 0449 206 JMP sTf~RT2 : ' cet p~3~--~r ~t~ct lino 3ll h~.3h~
2.07 :
20~ :
00aB B820 209 PS MOV R0,#PIJRGET : tr-- Il cllb~cr~ r p~4qr :.n 00fD F0 210 MOY A eR0 00~E 43S0 ~ 211 ORL a #110001l0l!E : F~r SIJbscribqr th~t polJere~ oFf 00P0 aa 212 M0~:' R2,a 00Bl S4C8 213 C8LL PWRCHK
ooe3 83 214 RET
215 : #Y#a###
21$ ~ ~. Ch~nge T-lner Fr^.~lJon- Ch.3n~3e 217 :
o0e4 B8.1 218 CTFc: M0~ R0,#CH~IEL
00B6 Ba03 21~ MOY R3,#03H
00P8 S410 220 S~LL I~PSOh : Storq.1 H :~ ,n,~rt-r nu~b-l-008A 23FF 221 M0Y ~,~OFFH
00BC D8 222 ~RE ~,R3 00eQ C64Q 223 J2 5T~RT4 : Error - inrlJt .13~3 i5 inS:31i~ or.-.
224 :
00eF B8~1 2S MOY R0,#CH~NEL
00S1 F0 2~ ~OY ~. e~ o 00C2 03F~ .2, ~-G8 ~,#-06H
00C4 F648 228 JC 5T~RT2 Er--or - C'l`OD n~lnth~r i 3 in:31i.i.

FILE: DROF7_RST:UEH~Rr~ HE~LETT-F~CK~PD: 8041 ~Eemelle~ 1 3 38 0 4 4 LOC~TION OBJECT CODE LI~IE snoPCE LINE
OOC6 S466 230 C~LL TUNER 'har,cJina frrcucnc:~
OOC8 B~rl3 231 MQV R2,~08H
OOCP B80 2 2 MOY R-,~02H
OOCC B8_1 233 MOV RO,#CH~NEL
234 :
OOCE 34Fr 23S C~LL RESOOT Send to G3t3 Froccs~or resF.-nF6 Q, 236 ;
OODQ Q449 23/ JMF STBRT2 : retIJrn m3in r.-.utir.e ~3~ :
239 ; -------_______________ OOD2 3C 240 ~LLONT: MQVD P4,~ : SeIecC G sue~crie~er oon~ BaCo 241 MOV R2,#0COH
OOD5 54QE 242 C~LL SELECT

244 ; ~##~ ###~###
~,45 ; . ~rnd M~ss3c!~s to Ge ic ~
OOD8 544C 246 FIND84: CRLL ~ IT 84 : if 84 CMG is =-i5t,t~,rn ~end it o D-,t; Pr.~~ --OOD~ B826 24. ^;MTD: MQV RO,#S~GMEStl :
OODC FO 243 MQV ~,rJRQ : Se- thlt e~uffer for Q4 cc~mr1ar.d i- em~
OOOD F2D8 249 Je. FI~D84 i i- e~uffer i uII,then thi~ r:uti~e l3i~
OODF D2E3 Z50 SMTGO: JeG S~TD1 for ~endincl to dr~ic~ e~ int. routins OOEl 541D 251 C~LL RESn4 Send 04 res,QQnse o D3t4 p~oc_ Sq~ -- ~2 :
OOE3 Z31Q 53 snTDl MQv ~oQQ1nnQnp~ : eet Q4 comm3nd eu~u OOE5 90 2~4 MQV STS,~ ;

OOF7 BB02 2~6 MQ~ R3.#0~ H i inrJe 2 Q~eO ~ ~e~ic~ ~D ,E;TE cn~ r OOE9 S410 25, C~LL INP50M
OO~B FB 2~8 MQV ~,R3 ~OEC D3FF Z58 XRL ~,#QFFH
~OEE C64D 2GO - JZ ST~RT4 2~i1 ;
OOFO B826 26- MQV RO.#S~DMEC~1 .ee th numb~r of ~nd e.,"ecS
OOF2 FO 263 MOV ~.eRQ : for 3t3 ~ro~~~ssor OOF3 ~B 264 MQV R3,~ ;
26~ ;
QOF4 03F9 266 ~DD ~,~-7H : If e;TE CQUNT i~ cre3t,~r ehan G
OOF6 E6F~ 267 JNC SMTD4 : then.inpUe d3t~ 3S ~borted .
OoF8 2438 268 JMP SMTD2 ; 1elort~ csmmand ~ illig~l r~eurn~
26~ : -OOF~ 19 z O SMTD4: INC RO : in,out m~ss3~e dat~
QOF8 'i41 Q 271 C~LL I~P50M
Z ~ ~ ~
OOFD FB Z73 MQV ~,R3 OOFE D3FF Z.4 XRL ~,#OFFH
0100 C6,~ Z75 JZ ST~RT
276 ;
Z7. ,-------- sub comnand Srt. r~l~ein~
0102 BB27 27~ej MQV RO,#SNDME-.~2 : ~_c,mm~nd ,addr~ss 0104 B924 2 9 MOV Rl.#SOeMES : ~-e~. n~ss30e for intr. roueine 0106 FO 290 ~OV ~,eRO
0107 53FS 281 ~NL` ~,#OFSH
010~ 77 2~2 010~ 7. 283 RR ~ :
OlOB 7, 2B4 RR ~ ;
OlQC ~ 285 MOV RZ,~ :

FILE: DR087 RST:UEH~F~ HEWLETT-P~CK~R~: 8041 ~s7~mt~ler LOC~TION OB,JECT 50DE LINE 'sOtlRIE LINE
OlOD D31F 236 XRL ~,#lFH
OlOF C62D 237 !. EXP~ND
0111 Fq '38 MOV ~,P2 OllZ 97 299 CLR C
0113 67 Z9-'! RRC ~ :
0114 03_C ~91 ~DD ~,#FNCTr~ ;
011~ ~3 '92 MOVP a,Q~ ;
011. ~1 '93 MQV QRI,~ ;
0118 F~ Z~4 MOV ~,R2 0119 12~1 29S JBO QDtjFNC
0118 230F Z96 MOY ~,#OFH
OllD Sl Z9~ ~NL ~,QRl OllE ~1 Z8B MOY RRl,~ ~
Z~9 ; - ---------__________ ~OQ ;
OllF B82~ 301 SUBCQM: MOY RO,#SNDME5~1 ;
Q121 FO '02 MOY ~,QPQ
0122 43C0 303 QRL ~,#OCOH : S~t n4 Buffe-r tull r ~._t 0124 ~0 304 MOY QRO,~ :
30S ;
306 ; cqunt oo~.~n RS ~ Co~Jnt time l-lhich 04 cc~m~rld c.,_lJr~d ' 307 ;
0125 FD 3QB r10~ ~ .. R5 0126 ~62~ 309 JNZ SET R5 01Z9 BD04 310 MOY R5,#CQIl~JT RS~l :
012~ CD 311 3ET_RS: tiEC P5 31Z , 3~_ ;
012B 0449 314 .JMP BT~RT2 . 3t5 , 012D BtO2 316 E~-P~ND MQV QRl.#Q2H . e~p~nd comm3nd i~ fixcd .
~t2F 241F 31. OMP BUPCOM : send tc de~c:
0131 23FO 313 QDDFNr ~oy ~,#OFOH
0133 51 319 ~L ~,e~l ;
0134 47 .~20 ;t~l~P ~ ;
0135 ~1 321 MOY e~
0136 241F 322 !MP s8rtco~ :
323 ;
0138 8040 324 5r1TD~: MOY eRO,#40H : Set ~t3t,us " t~uffer f~m~ty 013~ 0449 325 lr1p ST~RT2 32~ : -327 ; Kind of unction de~ine ~at~le 323 ; numt~er Q~ comm~n~d 3r~ 3~ fqllcll.!.
329 ~ -- det,iee ccnt~r 330 : 2 ---- send scyice dat.~
331 , J ---- read de-ice in~qrmation 332 ;
333 ~ ; cQmmancl num~-r 013C 23 334 FNCTBL: DB 23H ; l!Q
013D 22 335 DB 22H : ~.2 013E 22 336 DB 22H : S!4 013F 21 33~ DB 21H ; r,~ Sp-cifie~
014Q 32 33B DB 32H ; 9.3 0141 32 339 DB 32H e, ~
0142 11 340 DB llH G.C
0143 11 341 DB llH ; F.E de~ice _on~r 0144 11 342 DB llH ; 1l,10 . 197 1 338044 fILE: DROPI_RST:UEHhPh HEI~LETT-P~C~PD: ~041 ~sombl~r -LOC~T~O~ OB-JECT CODE LINE SOURÇE LI~IE
014~ 22 ~4' ~B ZZH ; 13,12 0146 22 344 DB 22H : IS,14 send data n to d~ ic~
0147 22 345 De 22H ; 1.,16 n = 1 to 5 014~ 22 ~4~ r,e 2.H ;
0149 33 347 DB 33H ; le,t~
014h 33 348 De 33H : lD.15 rc3.i deuice inform.3tion 014~ 33 349 DB 33H ; lF,lE
350 ; othcr sond d3~ 3 ~1 ; #3~ ~###~#~#
352 ; ' Subscri~er po~cr contrQl . Sub=.-ri~er S~-~it-ch Control ~53 ;
014C B82D 3S4 SPC: MOV Ro,#5UeFl.!R
Ql4E ~BQ1 355 MOV R3,#QlH
0150 541 n 356 Ç~LL l~PÇOM ; inrut ~5.7 ;
0152 F5 355 MOV ~,R3 01S3 D3FF 359 `~RL ~#0FFH : ChCC)~ Error indic3tor.
0155 C6'~ 360 0_ ST~T.
0157 B82D 362 MO~ RQ!#SUePI.!P : .-0159 F0 363 MOV ~. M O
015~ 5~0. ~4 ~ ,#~7~ :
Ol';C ~B 365 MQ~ RJ,~ : r~rQp Numbor 015D ~C 361:. MOV R4,~
015E F0 367 MQV ~,eRQ
015F F272 36~ .le7 SPCQ : Qit. .- ~qu~l 1- po~!er on n- po~ r o~f 3~ :
0161 548C 37Q 5PÇl: C~LL Pl.!ROFF
371 ;
372 ;
Ot63 373 SPÇCQM:
0163 FC 374 MOV ~,P4 0164 ~e 375 MOV F3,~ . Dos~,orc ~on~cr~,or ~um~cr 0165 F0 376 MOV ~,eR0 0166 D276 37~ IB6 SSCl i bie 6 oqual 1- el. c3bl~
379 ; O- ~el. cable 0163 54CQ 379 55CQ: S~LL Ç~elE~ :
30 ;
016~ 381 5~ÇCOM:
~Y2 ;
016~ B~0S 383 MOV R2,#0'.H- Sond rC=r~n~o- " Q~ "
016C BB02 384 MOV R3,#02H
016E 34FS 3-,5 Ç~-L RESOUT , PQ -- SllePW~
0170 0449 336 IMP ST~RT~
337 ;
0172 ~4B4 3Y~ 5PC0: Ç~LL PWROH
0174 2467. '~9 !MP 5PÇCQM
3~0 ;
0176 54C4 391 SSÇl: Ç~LL Ç~eLEe 017B 246~ 3g2 JMP SSCOOM
393 , 3g4 ;
017R 044D 39S ST~PT7: J~P ST~RT4 3g6 ; ###
397 : De~inc Drop Poll 5C~u~nc_ 39~ ;
017C BBFF 3~9 ÇHGF~L MqV R3,~0FFH
. .

FILE: r)PnP~ D~.T llEHI;P~ H~LlLcTT-~a~ ppr~ ~n~ e~l~=r LOCaTION OBJECT CQDE LINE ~OURCE LINE

101: ' 017F B831 40c SC!F : MO~ F0,#GRPFOL
01~1 eB03 403 MO~ P3,~03 404 :
01~3 34~4 40~ C~LL CHhNGE
4'~6 :
0t~5 FB 407 MO\~ ~.R3 0186 D3FF 40c ~RL ~.#OFFH
0198 C67~ 409 J ST~FT7 410 ;
018P Bao7 411 MO~ R ~#07H
018C BB01 41 MO~ R3.#01H
018E 34FC 413 C~LL RESOIJT
01~0 0449 414 ~ P 3TafiT2 41S :
01g2 0450 416 STPPT?: JMP SThRT3 41, ;
0194 D684 419 CH~I~GE: .JNIBF SHhNGE : h~n.~ D--~D ~ 3F f~3r~3t, 0196 76-C 41g JFl CHGF~L
01g9 ~2 4-0 I~ ~.DF6 01gq hO 4 1 MOY QR0,~
0i8~ 72BS 1~. JB3 NQPOL
4c3 : -01~C 47 4~4 RETPOL 5W~F R
01~D 18 425 INC Rq 019E ao 1Q6 ~10~ 3FI~
4 , 01gF 18 423 IN5 R0 0t~0 EBg4 4 4 D-J~ F?.CH~NGE
~30 :
0142 D6A2 131 FOLMO~-~: JNIBF F0LMOD
01a4 767C 43c JFI CHGF~L
01a6 22 433 IN ~,DEB
4.~4 ;
01~7 2~ 435 :CH a,R7 01~8 8831 43~ MO~ R1~#DPPP~
01~ F1 ,437 Ma~ Rl 01~B ~0 433 MO~/ QP0.h 01~C ~ 43q .SCH ~.Fc 441~ : -01h~ 34Cq 441 C~LL 3E~F7 44c ~
01~F C8 443 DEC RQ
01B0 F0 444 MO'- h!~FO
01B1 4380 445 ORL ~.#30H
01B3 ao 44B MO'- QRO.~ :
44, :
01B4 83 448 CHGE~[!: RET
44~ :
450 :
01BS 2~ 451 NOP0L: XCH ~.R
01B6 FB 452 MO\ ~.R3 0187 D303 4S3 :~RL ~.#03H
01B9 C6C1 454 .J~ PETSTP
15S :
0186 C8 4S6 ~EC R0 ` `-- 199 1338044 FILE: DROF. RST:I.IEH~RH HEI!IL TT-P~C~RD: 3Q41 ~ n~I-r-LOC~TION OB-JECT COtE LINE ,OIJPCE LINE
olOC F0 45~ MOY ~,QR0 01BQ 4320 453 ORL ~t,#3QH
01BF '~Q 159 MOV qFQ,~ ;
4~0 ;
0~,0 13 461 INC R0 ~2 ;
OlCl 2~ 4B RET.TP: YCH ~,R2 4~ ;
4~ ;
01C4 F1 46. RNDRBN: t~tOV ~,ePl 01CS S3DF 463 ~NL ~,#IlQtl11 te 01C. ~t 46? MOV QR1,~ :
01C8 33 4Bq RET
4.1 :
0IC9 D3FF 4.2 SETP7: I~RL ~,#qFFH
01CB B91F 4,3 MOV Rl,#31 OlCD 96C4 474 0NZ RNGRBN
4~S ;
01CF F~ 476 MOV ~-,t'RI
OIDO 432Q 4~7 QFL ~#oolqqqnqB
OlD2 ~1 4.5 MOV qFt,~ :
01D3 83 47~ PET
4~0 ;
4~1 :
432 :
4~3 ; ###*##~#~#~###~##$#~ 484 ; ~' G~fin~ DC-~:icc Pc~ ucn c 4~5 :
01D4 D6D4 426 :t`EP:: ~INIBF SDEPS
OlD6 76F~ 4B7 .JFI ST~RTS
01.D8 Et838 482 MOV R0,#QEVPOL
01D~ Z2 4B9 IN ~,DBB
OlDB S307 4~Q ~NL ~,#0~H
OIDD ~B 49t MOV R3,H
01DE ~C 492 t~tO`~ R4,~
01QF C6,~ 493 .. 'Z 5DEP51 494 :
QlEt F3 49S SDr--p~r! MO~ ,Po 01E2 0305 4~ ~DD ~#n5H
01E4 ~5 48, ttOV R0,~ - :
0ttS EBEt 4gB D0NZ R3,5DEPSll ;
499 ;
QIE7 SSq5 5Qr! SDEPSt; MOV R3,~05H
0tE9 s4tn S01 5~LL INPCort 01EB FB S02 MOV ~,R:. ;
nl~r D3FF SQ3 XRL ~#r-lFFH
01EE C6FH 504 J~ 5T~RT3 ~qS J
01F0 B~Q3 506 MO~ R2,#03H
0tF2 BBQ2 Sq7 ttOV R3,#02H
0tF4 B3q4 S0B MOV R0,#04H
0tF 34FC S09 C~LL RES13UT
olF8 0449 St0 IrtP 5T~RT2 5tl ;
01F~ 044Q St2 ST~PT.: .lMp ST~RT4 S t ~ ; #~ #

` ~- 200 1338D44 FILE: t~ROP~ T:llEHHPH HEl.!LETT-P~;fKhFr~: 8n'1 F~ mLsl-r LClCaTION OBJECT CBPE LINE .nl!FcE LINE
514 ;---~ Rc~ponsc O-J~P~Jt Fr:lJtin~ -----------------------------OlFC 85FC 515 RE801lT: JOEF RE80UT Ch~ck ~llJt ~ut~f~r ~Jll ~
qlFE q5 ~16 CPE Fq 01FF Fh S1 t10~' Is Rc 0200 02 518 OIJT CBB~ c~Jtr~ ~t .O-!mm,r.i. . . `
51q:
02 01 C8 5213 C EC F.3 Oc 02 FB 5~1 MOY ~ R :. :
5c '`;
0203 C50D 52' JZ RESENt` : I ~mm~n~ -nl~

020~5 8$05 S25 RE5CNT: JOBF f?ESCNT
- 0207 85 5c6 CER Fl) 0203 FO Sc. t10\r' 1~ RO
0209 02 52æ OUT rJ8B ~ Jtp~Jt . d5~ 3 020a 18 5cq INC R0 020B EB9E 530 GJN' R3.RE`sl~Nl 02 nD 83 S3 1 RESE~C: RET
02qE 440'5 532 FE5l_N1: JtlP RESCNT
S33 :
53 4 ; -- -- -- -- -- -- -- _ -- -- -- -- -- -- -- -- -- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ S35; ------- input :~mm3nd 3nd i ,t 3 57~i .
537 : RO ----- r~. n--. !!3t3 hc3-J 3d~Jmc-53~ r~ ------ B~!t,C ~ .}i I GF~-J~ ~.3~ .3 0211) D61 0 535 INP'-:5M: JNIBF INPCOM
q212 761a g19 .!Fl I~FENC : ~--mmin-~ d.3t3 i~ nc.t 3 _ mmsn~i 0214 22 541 IN h, C?BE : ' inp~Jt~ .. ::
021g ao 54c _ MO~ bRQ.f~ ;~-rc C`3t3 021b 18 513 INC RO
0217 E81 0 544 t~JN- R~', . INP0~3M

021R BeFF 546 INPEND: M5~J R~ 4l)FFH : R7=nffl., 0211: 83 54, PET d3~ 3 t 3illJrc 548 ;
54q ;
559 ;
- 551 ; Q4 r~=p. nCc ~lJt~llJt ~ ;IJ~ i nc 55~ ;
5~3 ;
Q c l G F O 5 54 RE'; 114 M~J~ ,3 OclE C5cF $~55 .IZ BC1 : crr-~r- mc~_~
5'6:
5 5 7 H t~ C~ ~ . It--7 S~513 ; JC S l~4ENt?
5~Sq;
Oc29 FO 560 MO~ .ePQ
Oc21 0307 561 HGG h.#9'H : ~ G~:~iCc~ IG ._~;mlr,~n.~ ~IT~ r.nll~lr 56c ;
0223 HB 563 SC~c: MO~ 1~3 H
0224 eaO4 S5. t10~' Rc . #Od.H
0226 e25 565 MO~.' RQ . #S~lCtlE' 02c13 34FS 56e~ BHLL PESOIJT ,-c-c,~ ~n 567 ;
022t~ BBcEs 56~ SQ4E~It;: MOY RO . #SNt`tlES l ' :
022C B040 559 MO\~' l3RQ~#401~ : cl~r ~l-l r c--~'~n-c- 4 .1- r.c OcZE 83 570 RET

~ ~, 201 1 338~44 , FILE: nf~OP7_F8T:I!EHt~ ;dL~TT-p~ci~ p5: 041 t~^ssrrltll~r LOC~TIO~ OBJECT C~DE LINE 30UQCE LINE

S~2 :
022F 2304 5-3 ~Ql. ~O~ 4~ : Err~.7r- mc,-,.3.3~7 0231 4423 5,4 JMP ~Q2 : 33m} 3s .3 1 I_omm.3n.1 ~75 ;
5,6 ~ ------ -_____ __-_______________ ~7~ : R~5p~-n~ æ
S,3 ~
0233 57q RE8_34:
Q233 B8S' 5E0 MO~ R0J#FOR84t 0235 FO 581 MOY ~. eR O
0236 F24. 5æ2 Je7 E~ 4 ~83 :
0238 C648 584 RE8P~: !. F84F~L 1_311~.i 3t, m3ir, lo f ~n!n.~.
5~5 :
023~ F0 5%6 MO~' ~.eP0 023B 0303 587 ~QQ ~.n03H
023D Rf 583 MOY R3,u : s~.or~ E'~'TE COIJtlT f~"- _~n.i 5~ ;
023E C8 -580 F8-IERF: QEC R0 ~,q1 :
023F BPB4 5q2 MOY f~2,#~4H
0~41 34FC S~3 C~LL F'E;fJIJT : P~-pc.n-~ OIJt ~q4 ;
q243 8857 595 884ENQ: MOY RO,#FOR84l1 0245 B0B0 5~6 MOY QRo.#q3n~ : rc~ct, 34 comm 0247 83 5,q7 E~IQ 84: PET
5,q~ :
5~ :
02.~8 BB04 600 F%qF~L: MOY Q3~#04 : if '.'LF comm~Jnic3t~ion is '3LI-~.
024~ 443E 601 JMP F.,4ERR : .-.~7n~ t~h3t con~Jit~ n t,o ~3t, -- 602 ;
024C 603 ~TT 34, 024C FD - 604 MOY ~.RS
024D ~653 605 .JN2 W~TT_ENQ : 1~` QS = 0 th~n loo~- ::4 !7~Jf~
024F 5433 60._ C~LL f~E~ 84 ~ s~n~1 E4 comm3r,.
0Z51 BD03 607 MOY R5~#COU~IT FS : iri~.~ali-~. R5 ~ count~r 0253 608 W~TT_E~IQ:
0253 83 6l)q, PET
610 ; -- ------____.-___________._____ 02'i4 B8~0 611 T~IT P: MO~' R0,#PI!lR4ET : Po(.. !-r Q~t~ct~ lin~ iti3li=~7ti:-0--S6 BOC0 612 ~OY fJRo~ocr!H
025B 14~B 613 C~LL F~ C311 S~t~_cri;~r~ p.:.~.l-r .~t,~.-t 025~ 83 614 RET
~1S
61~ :========~~ '`h4nq~7 C~n~ 7r~ rt~7r t.,7, t7~t p?l~ -n ==-=~~
61:3 ~
OZ5E E~FE 61,q ETT-:EL: MO~' R2~40FEH Rs: D~-op or C~-~r.-~~t3~ m.
025D FE 6c0 ~08 ~,P3 : F-- E:it~ p3t~t~~r~r i:qc~ L~-r~
02SE C665 621 ,J. CON0 ~ am: Con~ rt~ r .
0260 F~ 622 Mr~ r~F2 : 1 1 1 l 1~1 t 1 B
0261 E~ 623 TUNLR1: RL Q
0262 E861 624 DJNZ F3.TIJNLF1 0264 ~ 625 r~to~ ~2.~ :
026S 83 626 CONI): RET
62~ :

FILE: GROP7 P8T~IJEHfiPr~i HEI~lLETT-pfic~fiRrl: 8ri41 Fi~-;mt.l~r LOCflT I ON OB JECT CQt~E LI ~E 8QI!PCE LI ~E
8 ------_ _ _ -- _ _ _ ~-' ;: Ch3na~ Tur.~r f.
631 :
6,2 : B ~ R~ t~r 633 ~ F o ---- ln~ic3t,e Ch~nr-*l C~~mmin~ ~ n~ mr~n~
6 ---s 4 : P :~ - - - f .~ n sr ~ r t,~
6,5 : F;-.- --- Wc.r~-ing 6 -s6:
637:

0266 B~21 638 TU~IER MO~ Ro!#l-Hat-lE!
0-~8 F0 f,40 rfJ~ qR~ ,~Fn -- ~}r, .,-~-,- n~Jrr,t--r-g255~ ¢iB 641 MOV R 3 ,1 ~s2:
02~fl S4SB B47- C;ILL B I TZEL
644:
026C B823 545 ro~. RO~ #CHfiHEL ~-02f,E BB02 64B MOB R-;.#02 1.lF.0 -- 1~'3ln C~ Jne~ b~t--0270 54æF 54~ TUHLF s: CfiLL 8aTfJlJT
02--2 EB70 f~48 t~J~_ R~ ! TU~lLF ,~ :
64c~:
0274 F0 ' 650 MO~r' ~i.eRO . ~-t.. rt ~-~n~ t~ jt ir. 8i:?11 02,5 E, 651 RL a 0275 ao 652 MQ~r' fi~RO, ~ :
~5~:
0277 C8 65s DEC Pq ~3F~ -- M ~in r~ nt~r 0278 8808 B SS MO~r' FR3 . 41`iZ
02~ S4~F ~56 TIJIILr~ LL C~tiTOllT
027C EB2a B5, C'JI~i- R3 . TIJ~lLPc f,5:
027E t ~ 155'3 I ~1: R
027F BB05 6B0 Ml3'.' P3 . I~OS
0281 ~48F 661 TIINLFS: C~-iLL [!hTnl~T : ~ 7lJnt:r-0233 Ee81 662 C~JI~I- Rs . TU~ILF
66~
028S 230~ 66s MO~ L~iC~C~iT : ' ~3 3~i DU l 3G
02~,7 54a5 ~65 C aLL FlJLzE
6~6:
0?8q 2301 667 MO~ li.#Q~T O C ~ t';f ~1 028B 3C 66~ MO~.JC~ F4~fi OC.JC S4RiE 56S Cf~iLL 8ELECT
028E B3 6, 0 RET
611 : -- -- -- -- -- _ _ _ _ _ . _ _ _ _ _ _ _ 028F 87 572 c~aTl3uT: CLR C
0250 F0 ~13 ~o~l f . ~iR0 02~1 F7 6 4 cloLEr~i: RLf a 02~2 f 0 67~5 MO~.' qRO, ~ :
02~3 230q 676 MO~.~ ¢i . #Gf~iT
0.SiS 3C 6~7 MO'~'C~ F4 a i~3t3 :~ F~ir.. -ti.}n -~t [.3t3 0285 F6~B 67Z JC l~fiT~il :
0 ~8 2307 ~I q MO~ . #07~ 1 f .~JtD~Jt, ~i3~ 3 i ~ ~l 0c~ SC ~:3 ~ LC~ F 4 ~i :t,~ n i n ~ e 3 6~1; e~ ,e ~ r~t~ ,.e~
Oc?B Ffi 682 8aT~i I MO~' ii, R2 ~- c ~ _-_t h i ~M
02,qC 78 683 BIJTL F 1. ~
02?G 23FF 63s MO . f . # OFFH

~ ~_ 203 FILE: DROP7 PST:IlEHhFh HE.IL-~T-r~C~hFG: Bq41 hs3~mbl~rl 3 3 8 0 4 4 LOCQTION Oe-JEl`T CQGE LI~IE B~3UPPE Lt~E
029F 3~ nuTL P1,4 .clc~ L~-~
5~
92P9 54~3 fB" QhLL CLOCK
02a2 B3 6:i~ PET
5 ~ : ----------________ ________________._ .
02h3 239-B ~Bl C!~35k: MOV ~.#CLKp~T
02Q5 3S 6?2 PUL~E: MqVG P4, H : C 1~1 Hi,~h 92Q6 F4 5g3 MQV 4,PZ
0 Q7 39 694 qUTL P1,~ : :c1c~_t hiqh 024B 23FF ~S MOV 4.#0FFH
02~ 3~ 6~G nuTL Pl,~ -t 1 02~B 2307 6~B MOV ~.#Q,H Ci~-~l. L. i!l 9Zht~ ~C ~?~ HNLG P4,~
02hE F4 -0q BEL_ET: r1QV 4,P2 ~ - hi~Jh 02hF 39 .Ql QLITL Pl.h 02Sro 23FF .-0- MQf 4,#0FFH
0-~2 3~ q3 QUTL Pl.~ lCrt l~
02~3 ~3 .-04 PET : -.' q~ --------- F~.l.lc r, ~:~t~ . F,.,,~t~ -hC ~ --:--------------0234 230C .06 Pl~!F.q~: MO`. ~,#FWPGTI
02~6 3C q.-- cl~llrl:lt1 Mn~rl F4,~ :
02a7 545B .-0~ s4LL BrTBEL ! E~ET P~ n~ r IJ-~nl~cr 02B9 54~E .1Q 54LL .Q-ELErT

02BC 2304 .12 rl~!Fr!FF MO~ h,#PWPDT0 02BE 44B6 713 !MP CQIISQM
~14 :
0ZC0 2303 ~ H~;LE~: MqV 4,#C~sL_H : ie 1 C i- ~ PF ~ 3~ ¦ c H
02~2 44B6 .16 JMP CqNC;3M
.~ 1~;
02S4 2300 7'B C~BLEE:: Mq. h,#ChBL E . -clcc~ pF q~t~lc B
02C6 44B6 . 71~ JMP COHCOM
~20 :
02C3 230t~ ,21 PI~Pr:H~- MQY ~,#bETD~T P~~ r l ~c.-~-02C~ ~C .-2 MQVr! Pl,~ :
02SB 544E 7 3 C:4LL BELECT
92Ct~ B3 -24 rJET

Err.~rs~ o ~ i 204 FILE: RKI:SHIGI ~ HEWLETT-RROKRRG: ~048 Rs~mbl-r 1 3 3 8 0 4 4 LOCRTION 08JECT CODE LINE SOU~CE LINE
1 ~8048 2 ,Lact Ver.~RKI~
4 :~ff:8204381u~ '!X,:f'~ .'.'.'.';','.'f;,:,.':.;,~`.. :'.. ,',.,.,~,.-~.,',.,;;:.:,.',.;' 5 ;
6 ;
7 ; Drop Processor ' 8042 ?
8 :
9 ~ timer interrupt routine. ver 2.-.1 11 ; ~ Hot ver, 3 I W_Rn bv Hi~eo ;higihara.

12 ;

13 ;~ .f ~ .f.~ .f.~.,',';.,.,.,.i.,.,.;',;f.,.,',.,:,',~.;:;.,.;:~X82043~ 1 0;';';'

14 ;

15;
17 ~
1 a ; ~s --- Register bank 1 ~
S . `~'~
21 ;"S .
22 :~S ~**~* RO : Working res~ter. *~**~
~3 :~S
24 :S". **-~** Rl : ~or~ing rcister. ~***~
25 ;~
26 ;SS *~*** R2 : ~at,a ~'bit! ._ounter, ***~
27 ;""
28 ;;~ ****~ R3 : Transmit or receiv~ data buffer. ****-~
30 ;`~$ ***** R4 : CIJrrent, 1Ccese drop map 3ddress. **~
31 :~S ~,~
32 ;~$ *~**~ R5 : ~urrent ~ccess d~vis~ nap address. ****~ N`~
33 ;`~S `,`-, 34 :SS ***** RS : VLF flass. **-~* `.S
~5 ;~
36 ,$~ ~:bitO) = Er-ror counter O. ~S
37 ;~ -38 ;SS Cbit;) = Error count,er 1. SS
39 ,~S
40 ;SS ~bit2? = Error coun~er 2. S~
41 ;~S S`~
42 ;SS ~bit3~- - --- No u~ed. --- S`~
43 ;~" .S;
44 ,S` `'bit4~ = --- No uced. --- `,S
45 ;SS
46 :SS ~bit5) = --- No us~d. --- ``.
47 ;~S '-`' 48 ;SS ~bit6~ = RCK flao. SS
4~ ;`~" `"
50 ;SS ~bit7~ = ___ NQ used. ~~~
51 ;~S
52 ;S~ *~*** R7 ~ Rolling fla~ **~
53 ;"S S'~
54 ;SS ~:bito~ = Peturn wait fl39. ~N
55 ;~
56 ;SN Cbitl~ = No requet fl3g, N~
57 ;~

`~ 1 338044 FILE: ~KI:SH}GI HEwLETT-P~CKaRC~: 3048 ~ss~mbler LOC~TION 08JECT CODE LI~E SO1JRCE LIt~E
58 :'s~<bit2> = ~nl~ Q4 ~lag. ':~
S 9 ~
60 ;~`~rbit3) = --- t1g uscd, --- HH
61 ;~
62 ;~ ~bit4) = R.P Qr priorit.~ flacJ'd~i._^i, ~'~, ~3 ;"~ `."
64 ;~ ~bit5) = p,p or priorit~ fl3g~'drsp~
65 t~
66 ;~ ~bit6) = First drsp ç~le~_t fl3q. ~`~
67 ;~
68 ~ bi~,7~ = Re~ponse flag.
69 :~
'1:
~2 :
73 ORG 0.H
74 :
7~ C~t~tt~C~CCCCCC~ t~tttttttt 76 ;
77 ;
78 ; TIMER INTERPUPT POUTIt~E, 79 ;
30 :
3~ :

~3 ;
~4 ;~ C~ttttttttttttttttttttttttttttt~ttt 3~ ;
36 ---_--_________________________ 37 ;
38 ;
<0024:> 39 SDMSGK EQU 24H :Submes~a~e ~or de~.~ice respon=~.
90 , ~5Ommand only ,WR or PC? c13t,3.?
~0025> 92 SDMSGH ERU ~5H ;Q4 r~mmand buffer ~ ID.
93 ;
~4 ;
~0026~- 9S SDMSGl EQU 2~H :0$ ~ommand buffer ~ bpte ~-ount.
~6 :
9~;
<0027~ 98 SDMS~C EQU 27H ' ;04 ~-c~mmand buff~r ~' c~mmand.
gg:
tOO
<0031> 101 DR~P0 EQU 31H ,t?rcp pollina map ~. 2.n 102 ;
103 :
iQ036'~ 104 DR~P5 EQU 36H :D-np psllin~ map ~1 ~.5 1 0~ :
106 ;

<003,'~ t07 DPt~PH EQU 37H Grop pollin~ m3p ~ ~.H
109 :
<0033:~ It0 DVM10 EQU 3SH ;DC~ pollina map ~ 1Ø0 I 1 1 ;
112 ;
<003D> 113 t)VM11 EQU ~DH :Cie~ e p~llinq map ~ 1,1.0 114 ;

~ 338044 flLE: PKI:SHICI HEWLET~-FACK~RC: %0-1% A,e~mbl~r -LOC~TION OB-JECT COc!E LI~E 5~1JRCE LINE
~t~ ;
<0042~ 116 DVM1' EQU 42H ;De~ice pc~lling m3p 1.2.n 117 :
1t8 ;
<0047~ 119 DYM13 EQU 4,H ;C)e~ c pf~lling m3p 1.3 0 120 ;
~Zt :
<004C~ 122 DVM14 EQU 4CH :~`e~ic~ Polling Tap ~ 1.4.q !
123 ;

~OOe!l`~ 12S C~YM15 EQU 51H ~ :ice pclling m3p 1 5 q 126 ;
127 ;
~00563 128 RE84H EQU 56H :84 c:.mm~r,.i b~Jtfer ID.
1 :"9 ;
~30 ;
f~005~ t31 RE841 EQU 57H ;84 c~mm~nd but-er ; b:~te ,~o1Jnt.:i 132 ~
133 ;
<00g8~ t34 RE84G EQU 58H ;84 c-~mmand buffer d3ta rl.
13~ ;
136 ;
<005D> 137 TXBUF EQU 5DH ;Tr3r,smis~ d3ta ~ff~r.
138 ~
t3g ;
<00SE~ 140 DEM~Pq EaU 5EH ,Dftice polling m3p ~ 2.1~.q ~.
14t 142 ~
<0065~ 143 DEM~P7 EaU 65H ;Detice p~lling m3p ' 2.N... .~.

14~ ~
<0067~ 146 DEMAPH EQU 67H ;D~uice pollin~ map ~ 2.1~.H `.
t4~ ~
t48 ;
~0068~ 149 LAY1 EQU 68H :IncJirect acd-ire~sinc! d3t3 buffer~
lS0 ;

~0069i 152 ~8P~R E0U 69H :P3rit-~ t`lac1 .
lS3 ;
1~4 ;
~1006~ 1S5 POLI~G EQU 6~H - :Curr-.nt 3cces d-~ic~ ,r 156 ; number set buffer.
1~7 ;
C0q6E~ 1S8 C~T8'~ EOU 6BH:E.-te cc~unt~r t`or R:,~ cr TY:.
. I S9 160 ;
<0q6C~ 161 8~YDRP EQU 6CH ;Drop number s3.e buff-r.
162 ;

16~ ;
164 ;
16S ;
166 ;

168 ;
170 ; ---------_______- -______________________ 171 ;

.

`" 1 338044 FILEt ~KI:SHIGI HEWLETT-F~C~RD: 8048 ~s~m~l~r LOCRTION OBJECT CODE LINE SQURCE LINE
172 ;****~**~****# IND}RECT RDDRE~SII~G RuuTINE~ **~*~*****~-~*
1?3 :
0300 2F 174 HETIT: XCH ~,R7 :I~Jmpin-? address ~t.
17S ;
0301 D5 - t76 ~EL P81 ,~egister ~3nl: .~h3nge 177 ;
0302 030S 178 ~DD a~#NEGIH :Indirect 3ddressln-? jum~.
0304 B3 ~ 179 JMPP e~ ;
180 :
~81 ;
182 ;***~
183 ;
1~4 ; --------------------________________________ 185 ;
186 ; ### INDIPECT ~GGPE~31NG T~BLE~ ~ ###
t87 ;
188 ;
030S 2S2729Z82D 189 NEG}H: DB ~0, ~1, a2t ~3, ~4, ~S, ~6, ~7 190 ;
19~ ;
030D 3~ 53~3D 192 De ~a, B9.B10.C11.r12,C13.rl1,ClS
193 :
~94 ;
031S 4S47494B4D 19S D8 C16,C17!C13.C19,tJ.0,D21,D22.D2_ t~ ;
197 ;
031D S5S7595BSD 19~ DB D24,D25,G26~G2.,G2q,E29,E30,F~t tgg ;
200 ;
20t ; ###~ ###
202 ;
203 ; --------------------______________________ 20S ;
206 ; SSSS3$SSSSS JUWP T~BLE FO~ TIMEP INTEPbUPT StsssEsss~r~
207 ;
208 ; ~ I N G E
209 :
032S 649~ 210 ~0: JrtP CPCMO ,t*0] Cor,ditior~l pQIl c~mmand 2t1 : ~et ct4rt, bit Tx routine 212 ; t L.No 423 213 ;
0327 64E3 214 ~ : JWP DWBO :C#1] : Tr~r,smissi~-e data T.
215 ; routine.
216 ; t L.No 519 217 ;
0329 64B5 218 ~ JWP WIO0 :t#2] : M~ss3~e indi.-ator ~it T~ I
219 ;¦ r-outin~
220 ;I t L.No 456 221 ;1 032B 64FE 222 ~3: JMP P~LBO :t#3] : La~t bit of tr3r,smisi~e 223 ;I data T~ r.~utine. I
224 ;1 ' t L,~Q 5~6 ]
225 ;
03,D 6465 226 ~4: JWP WTMINT ;t#4] : Dr~p selec~ ~. start ~it T:,-227 ;I r~utin~.
22a ;I t L.~o 3S5 ]

FiLE: ~KI:SHICi HEWLETT-F~CK~RD: 8048 ~s~mblcr LOCPTION OBJECT COQE LINE 50URCE L~NE
Z29 ;1 032F a41~ 230 ~S: J~PP~RBT :t#5~ : P3ritv bit Tx rout,ine, 231 :
232 : t L.~o ~04 233 ;
0331 84tl 234 ~6: J~P5TOPO ;C#63 : Stop bit~ T~ routin~
23~ ;
236 ; t L.No 585 237 ;
0333 9439 238 ~': J~P~CK1 ,t#7~ : ~CK recei~-e ~ ckeck 239 ; rqutinc.t1 240 :C L.No 6S5 241 :
0335 8422 242 ~a: J~P PCK :t#8~ : RCk: rccei~e '~ check 243 :¦ routinc.
244 ;I C L.~o ~24 245 ;1 0337 C47F 246 Bg: J~P~CK4 ,:C#~ Ck: ch~ck 4.
247 ;1 ;disposal o~ Q4 cDmm3r~d.i 1 248 ;1t L,No 1456 ]
24? :1 0339 ~4E8 2SO B10` JhP C0~04C) ;t#10~ ~ 04 command dat1 T~
25t :1 ;dispos31 ~f 04 comm~nd.:~ I
252 :1t L.No 1241 ~53 :
D33B 848E 254 C11:JMP KE`/b~`/ :t#11~ : St~rt bit, T~
255 ;1 ~:Rx routin:.'` 1 25~ ;1t L.~o 4Q
257 :1 033D 84BB 258 C12JhP P~LK:t#123 : Parity bit Rx. I
25? ; ;Rx routine.' 260 ;C L.llo ?14 ~ I
261 ;
033F 84?8 262 C 3: J~PRST~T ,:t#13~ : St~rt bit erase.
263 ; ~x rou~.in~
264 C L.No 760 265 ;
0341 84~2 266 C'4: J~PPB5ET :t#14~ : Pcc~ivablc d~t,a P~.
267 ; tRx rout,ir.e.) 268 ; C L.No7~0 ~ I
, ~6~ ;
0343 84bE 270 C'5: J~PaCKOT :C#15~ : ~CK bit Tx. ~11.) 1 271 tP~x routine~
272 : C L.No855 ~ I
2r3 ;
0345 ~4~E 274 C'6: J~P5TGN84 ,t#16~ : 5tDp bit Tr 6. I
27S :1 'contimue :~4 c~mm3nd data P~
276 :1C L.No 1137 277 :1 0347 ~43~ 273 C17: J~P NCKOT :t#17~ : NCK Tx .
27g : tPx r,~utine.:) 280 :C L.No g?~
28~ : I
034g ~4BE 282 C'8. J~P STGN04 ;t#18~ : St,Dp bit T:~ 7. I
283 :1 continu~ Q~ comm1nd d~t3 ~
284 :IC L.No 1137 ~ I
2~5 :1 FILE: ~KI:S~IGI HEIIlLETT-F~CK~RD: ~048 ~en,bler LOCRTION CB-JE5T CODE LlHE 30U~CE LlNE
034B C43E 2a6 C13: JhP ~C~:3 t#19] : ~C~ check 3, 28. ; CR.~ routine.
233 ;C L~rlo 13?3 2~
034b ~4b4 2~0 P'0: JhP C0h04 tPZn~ : Start bit Tx, 291 ; ~Q4 command.i 2?2 )t L.No 1215 2~3 ;
034F ~40~ 2?4 D''1: Jrp STERa4 ;t#21~ : 5top bit T:x 3, 295 ;I di posal of 34 com error.
2~6 ;it L.~o ~22 29~ ;1 0351 84F3 298 D22: J~P STEP04 :t#221 : Stop bit T.Y 2.
2g9 ;I dispo 31 of 04 com error. I
300 ;It L.~o ~0 ]
301 ;1 03S3 a4g~ 302 D23: JhP STGP84 ;t#23~ : Stop bit Tx 5.
303 ; 84 com all ok ~ ~nd.
304 ;C L.No 1110.~ 1 305 :
0355 ~424 306 D'4: J~P STGP04 ; CP24] : Stop bit TY 4.
307 ; 04 com 311 ok æ end.
308 :C L.No ?6 309 :
03S7 84EC 310 D-~5: J~P ~EPPX ;t#2S3 : Stop bit Tx 1.
311 ;I ch31leng~ once more. I
3t2 :It L.~o 3 313 ;1 03~ ~459 314 D2r: I~P LCIN :t#2~ : L.~t. character indic~tor 31S ;l check.
316 ;It L.~o 1~3 317 ;1 035B E434 313 D2': JhP IDLINT :t#2~ ait routine for 84 .-om. te~t.tcst 319 : ~' No 1 .
320 :t L.No 1634 321 :
03SD E41B 322 D~3: 0hP bSCF34 ;t#231 : Drop ~c3n for 34 comm3nd.
323 ;
324 ;t L.~o 1~2~ ~ I
325 ;
035F E47. 326 E"9: IhP DSF04C ~ ;t#29~ : Drop ecan f.:.r 04 command.
327 :1 328 :It L.No 1.6S ~ I
329 :1 0361 E44B 330 E30: JhP NDPS04 ;t#301 : 0hanging oprC~tic~n to 81.
331 :
332 ;t L.No 1713 333 :
0363 64CE 334 F?1: JhP ShLING- ;t#311 : Life eample.
~35 :
336 ; t L.No 492 ~ I
337 ;
333 ;
33~ ; sssssss~ssss*s~s*s~sss~ss~*~*~*~ ss~s~ s~ss*s*~
340 ;1 341 ;111111111 342 ;

FILE: FtKI:SHICI HE~LETT-F~5t<aPD: 8048 aS ~mbler 1 3 3 8 0 4 4 LOC~tTlON OBJECT CODE LINE SOURCE LINE

~-44 ;X
34~ ;Y**** ~Q~t'lTIQNPL-PQLL.50~t?TTIO~I~L-PQLL~ccND}TlQt~r~tL-FoLL~ ~***.
346 ;
~48 ;
7~4g ;~ ... u n ... n n ~ n . . ~ u. n .......... .
~50 :
3SI : DROP SELE5T ~ ST;tRT BIT ~ET.
352 ; #,~4 : 3S4 :
35S : ................................... .......... . .
036S 00 356 MTMI~T: ~OP
0366 26GC 357 JNTQ ETDSR :t3etest ~er.............. ice requost.
3S8 : from SPU.
35~ . ........ ... ....... ... ..... . . ....... .. .
3GO :
0363 D40e 361 C~LL TSET1 ;1 bit t~mc cQunter 5ct ~ st3rt 036~t 6439 362 ~OTM~P: JMP t3/MNS ;t n~ rsqlJest ' :3 364 : ~ requ~st ! .~
036C D40B 36S ETD~R: C~LL TSET1 ;1 bit time -ourter set ~. St.3~-t 366 :
036E B831 367 MOV R0 #DRM~P0 ;Grap map set or nQt.
0370 F0 368 hOV ~t eP o 037t 726~t 36? tB3 ~OTMRP
370 :
03 3 F486 3 1 Cr^tLL DEVCH ;Ch3ncting the de~ice m3p~
372 :
0375 BD5E 373 MOV R5 #DEM~F0 ;First de~iCe selec' 37S :
0377 FD 376 DttSRE: MOV ~t RS ;~ter.t de~ice select.
0378 ~t8 377 tltO~ R0 ~t 0379 F0 373 MO~ ~t eRO
037~t ~867 379 t10~ R0 #DEMftPH :t~e~ice map 1 sct ~r not. ?
037C ~tO 380 ~ûV eR0 ,t 037D D3FF 331 ~FL rt #OFFH
03.F CG39 3a2 JZ D~tt~tS
383 :
384 : ~ ~e~ ! ' 0381 D422 38S S~LL P~tPCLL :P3rity fl 3C C le 3r 3a~ : ~ LF fl 3~5 cl e3r.
0383 D414 387 CrtLL ~LFû0 ;S~3rt bit "0~ set.
389 :
0385 2300 33'' ttOV ~t ~0 ;~ tEXT tCFCMO~ *
038. C4EF 35'0 Qt1P JMPR ;PETR.
39t :
392 : r ~c~ roqueSt or n~3t. =et 0339 FF 3g3 DVrtNs: rtov rt R 17 038~t 4302 394 OR~ ~ #02H :Dr-~p ~c3n fl3a sct 038C rtF 39S ~OV R~ r~ :
35~6 :
038D B4FF 3517 Cr;LL BS~TBC :Q4 cQmm3nd cet .r- n~t 0 038F F25t3 35t8 JE SF04D
0391 C4F2 3~q5~ JMP ~Tt~RP ;-. ~t~t set ' `-- 211 1 33~44 FILE: ~KI:SHICI HEl~LETT-F~5KpRD ~018 ~s~m~l~sr LOC~TION OBJECT COt~E LINE 801JRCE LINE
400 ;
4Q1 ;
03~3 FF 402 ~FQ4D: MOY ~,R.-03g4 4304 403 ORL ~.#04H
0396 ~F 4d4 MOV R.,~ :
03~7 E459 405 JMP I~To45 :tlisp~ f Q4 c~mm~sncl 4Q6 : *r~E`T t50M041**
407 ;
40a ;
40~ ;
410 ;~........ ...... n ............................................ ................................
4~1 ;
412 ; ~ CONDITIOl~L PnLL c~MM~Nr~ SET ~ 8THPT eTT -5ET.
413 ;
415 ;
417 ;1 039~ 58 418 CPCOM: DB 53H
41? ;
- 42' 1 4~2 ;
423 ; ...................................................
03~ F8 424 CPrMO: MO~ ~,PQ :8t.~r~ t~i~, t.r3ns.
03~B 3D. 425 MOVn P5,~ , 42~ ; ........................ ..........................
427 ;
039C D40B 42~ C~LL TSET1 ;1 t~it timC .:oun~r ~t, ~ r~, 3rt.
- 42~ ;
039E 2399 430 MOV ~,#CPCQM ;C.~nditi~n31 p~ll c~mm3nd r~,~
03~0 ~3 431 MOYP ~,e~ ~ Tr~nsmis~ e d~t3 sst. :
03~1 ~9 43 ~O~
03~2 B867 433 MQ~ R0,#PEM~FH :t#TXBUF~ r,iiticnal pcill 03~4 F0 434 MOV ~.QR0 ~ command ~ d~ ddr~ss.
03~5 530F 435 ~NL a.#QFH
03~7 49 436 OPL ~,P1 03~8 B85P 435, MOV R0.#TXt5UF
~ 4~ MO~ PQ.
43~ ;
03~B 886a 44Q MOY R0,#L~ Inciir-~c~, 3ddr~ss=in~ t~u~f~r ~c- t, 03~P BQ07 441 MOV QP0.#, 442 ;
03~F D414 443 C~LL YLFO0 :MI t~it Q" 5et.
44$ :
03R1 2302 44S MOY ~,#2 ;-~*NEXT tMlO0]~
03e3 C4EF 446 JMP JMPk :PETR. .
447 ;
448 ;
44g ;
451 :
452 ; ' ME~ E INt;10~TOP BIT T~
453 ; #~
454 ;.... n ..... n ........ ...... n ... ,.,.. ,."""""""",."""""",4~ ;
45~ ; , 212 l 33ao4~
FILE: ~KI:SHI~I HEWLETT-FaCKf~RD: E134E ~~5~mbl~r LOC~T I ON OB JECT CODE L l NE 513URCE L I NE
038~ F~! 457 MIOll: MOY ~,F'q ;MI t~it tran~.
0:~B6 3D 45:3 MOYD P5, ~ - :
45~1; .................................................
4~0:
03R7 D40F 461 C~LL TSET05 : I bit. tim~ .-our,ter set ~. st3rt. .
462:
03B,q B8SD 463 MOV R0,#T`;eUF :~--tTl~
03B8 F0 464 MOV ~t,ePQ
03BC 6;' 465 PRC ~ : R~t4t.. ~: r- i gh~ .
03er, ~B 46~ MQ`.' R3, ~ :
03BE F6C4 467 JC '~LFû 1 : Cv= t 468;
03C0 D414 46q C~LL '~LFO0 : ~ C4rr~" = 0 l 470; - T~ 3n~miss~ 3t.3 = rl ~:ct, 471;
03C2 64ca 4~2 JrtP MIOOE

03C4 D42g 474 VLFD t: C~LL P~L~N : ~. C 3rry z t 3 47~; P3rit~) 3n31~/5~.
4;'6;
03S6 D41B 47.~ CftLL VLFOt : Tr3nsmis~ o d.3t 3 = ' t ~et .
478;
03CS Bft07 47q. MIO0E: MOY R2,#0.- H Bie cq~nt~r ~t.
480:
03C~ 23tF 4:~t hov ~t,#3t :~*HEXT rSrtLING~ ip~
03CC C4EF 4:32 JMP JMPR : RE rF. .
4a3:
4:34;
4~5;
4a7;
488; ~ LIFE i~MPLE.
489 ; #F--1 4~1;
4q,2; ...................................................
03CE 00 493 Sl`tLING: NOP ~e::ist the b~d Device on 03CF 3~D9 494 JT0 Sl`lLOK : this c4ble ?
4q5 .
03Dt D40F 4~6 Cf~LL TSETOS ;~Error !
497; - H:31~' bi~, ~.ime c~lln~.,=r se'. ::~
03D3 FE 49B ~10V ft, R6 i st~rt .
03D4 43t Q 4~9 ORL ft, #t OH
03D~5 ~E S00 l~tOY R6,ft : .
03D7 64DF 50t JMP DI~IBOJP
S02;
03D~ D40F 503 SMLOK: CftLL TSET0~ Ok ! ) ~504: Half bit time ~_o~Jrt~r ~ t, :, 03DO FE S0S l~`tOV ft,R6 ; ~t4rt, 03DC 53EF 506 ftNL fl, # OEFH
03DE P~E S07 rtoY R6, ~0~;
03DF 2301 509 DWBOJP: I`tOY ft~#1 ~,~tNE`'T ~r~ ED]~
03E 1 C4EF S t 0 JI~IP J11PR : F ETR .
5t 1 213 1 33804~
FILE~ ~KI:SHICI HEWLETT-F~CK~RD: 8148 ~ssembler LOC~TION OBJECT CODE LINE SOVRCE L~NE
514 ;
515 : ~.' 8 eIT DriT~ Tx.
~16 ; #r~1 517 ; n n .,.... , .. .... ,.. ~ n ................................................ ....
518 :
51g ; , 03E3 F~ 520 nh1go MOY ~,R0 :Tr~rlsmissl:o d~t3 t--3ns.
0sE4 3D 521 MOVD P5,~ :
S22 ; ...................................................
523 ;
03E5 D40B 524 CqLL T8ET1 :1 t~lt time eourter set '~ st~rt.
S2~ ;
03E~ FB S26 roy ~,R3 :R~t1te ri~ht,, 03E8 67 527 RRC ~ :
03E~ AB 528 ~ûY R3,~ :
03EA F6F0 52g JC YLFD2 :Cy = 1 ~
530 ;
03EC D414 S31 CALL -YLFO0 :Next tr3nsmissive d3t3 = 0 set.
532 ;
03EE 64F4 533 JhP DWBOC : ~
S34 ;
03F0 D42g 535 YLFD2: CALL P~L~N :Next tr~nsmissi~C dat.a = 1' set.
~S36 ;
03FZ D41B 537 CALL YLFO1 ;P.~rity fl3~ set.
538 ;
03F4 E~F~ 53~ DWBOC: DJN, R2,DWBOE :Transmis~ e data end -?
540 ; ~ end ! ) 03F6 2303 S41 MOY r~,#3 :~**~EXT tPr~Lr~*~
03F8 C4EF 542 JMP J~PR RETR.
543 ;
544 ; ~.' n~t srnd ! -03F~ 2301 54S DWEOE: MûY ~,#1 ,~*~NEXT tDWBO~~*
- 03FC C4EF 546 J~P IMPR :RETR.
~47 ;
548 ;
S4g ;
SSl;
552 ; ~' L~ST D-~T-~ Tx.
~S3 : , #r~3 S~S:
S56 ...................................................
03FE F8 5S7 P~LBO: MOY ~,R0 :L~st dat3 trar,s.
03FF 3D SS8 MOYD PS,r~
5Sg ; ~ '''''' ''' '' S~O;
0400 D40E 561 CALL TSET1 ,1 bit time ~m~Jn~er- se~ st3rt.
562 ;
0402 B86~ 563 MOY R0,#~NSP~P
0404 F0 5~4 MOV ~,R0 :P.3rit~ l3q ehc,_i, 04d5 120B S65 J80 EYNST
566 ;
04~7 D414 567 C~LL '/LFO0 :~ E~-en 568 ; P3rit~.~ tL~ ~n~
040q 84OD S6g JMP PB~ED
S~O;

FILE: ~KI:SHICI HEWLETT-PaCKaRD: 8048 assembler LOC~TION OBJECT C9DE LINE S9URCE LI~E
0408 D41B 571 EVISTI CaLL VLFOl ;' 9dd 572 : Parit~) bit ~ set.
~73 ;
04OD 2305 5~4 PBSED- MOV ~,#5 ;#~NEXT CMTMINT~
040F C4EF 575 J~P J~PR ;PETR.
S7~ ;
5~7 ;
57a ;
580 ;
581 : ~' STOP 8IT T~
582 ; #~6 583 ; "~ n 5~4 ;
535 : ...................... ............................
0411 F8 586 STOPO: MOY a,RO
0412 3D 5a7 ~OVD P5,a ;Stop bit tr~ns.
588 : ...................................................
5ag :
0413 D40F 590 C~LL TSET05 Hal~ bit time csunter set ~ start.
591 :
0415 B868 592 MOV, RO,#L~VI ;Indircct addressing.
0417 FO S93 MOV ~, ePo , ~NE.~T ~-- tL~ l]**~
0418 C4EF S94 J~P JMPR :RETR.
5g5 :
5g6 :
5g7 :
Sg8 ; ~ ~ ~ ~ ~ u ~ u ~ ~ ~ ~ n " ~.,.. ,... .,.. " .... ... , ~""., "~""~ .. u... ,~
5g9 :
600 ; ~ PaRlrY BIT T:~. ~
601 #~5 602 ;~,,,,,,.,,,,,.. uuu,....... .... n ........ u... -.-.,-.. u.... ... ,".. "
603 ;
604 ; , 041~ F8 605 PaF8T: MO~ ~,RO
041B 3D 606 MOVD P5,~ :P~rit~J bit trans.
607 : ...................................................
608 :
041C D40F 60g caLL TSETOS ;H~ it ~.ine sc~unter eet ~. st;r~.
610 :
041E 230a 611 ~OY a,#a - :In~irect addressinQ.
612 : ~NE~;T tF:CK~
0420 C4EF 613 J~P JMPF' ~PETF'.

61S :
~6 :
6~
61g ;
620 ; ~: Rl-K CHEC~
621 :
622 :
623 :
624 : ...................................................
0422 00 625 RCK: NOP
0423 362D 626 JTO SPCEI ;RCK bit det~Ct.
627 : , -- 215 l 338044 FILE: ~KI:S~IGI HEWLETT-F~CK~RD: ,048 ~s=embler LOCaTION OeJECT CODE LINE SOURCE LINE
628 ;
0425 D40F 6Z9 C~LL TSET05 ;Half bit tin,e counter set ~ t3rt.
630 ;
04Z7 FE 631 ~OV P,R6 ;RCK fl 3q set.
0428 4340 632 ORL ~,#40H ,C QK !.:~
042~ aE 633 ~OV R6,~ ;
042B 8433 634 J~P RCKE
63S ; C Error ! ~
04ZD D40F 636 SPCE~: C~LL TSET05 ;Half bit time counter cet ~. etart.
~37 ;
042F FE 638 ~OV ~,R6 ,PCK fla~ ~et.
04~0 53BF 639 ~NL ~,#OBFH
0432 ~E 640 ~OV R6,~ :
~41 :
0433 D41B 642 RCKE: C~LL VLF01 :Sto~ bit "1~ ~et,, 643 :
043S 2306 644 MOV ~,#6 :~*NE~T ~TqPO~
0437 C4EF 645 J~P J~PR ;RETR.
~46 ;
~47 ;
648 :
65Q ;
6S1 ; C ~CK CHECR.
~-52 ; #~_ 653 :
654 ;
6S5 : ...................................................
0439 00 6S6 ~CK1: NOP
043~ 2647 6S7 JNTO C~CHK4 ;~CK bit, detect.
659 ;
043C D40F 660 C~LL TSETOS ;Half bit time counter cet~ ~ st3rt.
661 ;
043E FE 662 ~OV ~,R6 ;RCK fla~ check !
043F D26~ 663 JBG RCKEND
664 ;
0441 e4FF 665 ERRCKT: C~LL 8CNTBC ;C PCK error 044S C4~F 667 J~P blSENb ;fER~
668 ;
0447 D40F 669 C~CHK4: CPLL TSET05 ;Half bit time counter ~et ~ ~,~rt.
0449 FE 670 ~0~ ~',R6C
044~ g24E 671 Je4 ~BERSP
044C 8441 672 JhP ERRCICT
673 :
044E B867 674 PBE~RSP: ~OV RO,4DE~P~ ;make error meeea~e ~Q4J.
0450 FO 67S ~UU~ RO
04S1 5307 676 ~NL' ~,~07~ ;
04S3 E7 677 ~L ~3 0454 E7 678 ~L- ~ :
04SS E7 679 ~RL' P~ ;
04S6 ~9 680 ~V Rt`,'~
04S7 8837 681 ~ O,~CRI;.,F~
04S9 FO 682 ~OV ~,eR~ ;
04S~ 5307 683 ~L ~,~07~ ;
045C 49 684 ORL ~,Rlt ' ` ~ ' 216 1 338044 FILE: AKI:SHIGI HEI~LETT-P~C~RD: 8048 ~c emblsr LOCPTION OBJECT CODE LINE ~OURCE LINE
045D B856 68S ho~ RO~s~RE84H
04~F ~0 6-86 ~o~ iR~
0460 B858 6v7 MOV RO,4RE84C- :
0462 BOQ4 éa9 MOV QRO,~04~ :
- 0464 R857 éa9 rov Ro,stRE84~ :
0466 BOOO o90 ~OV eRO,40H
046? S3441 6g1 J~P ERRCKT' ~2 :
ég3 : ' ~CK ~ Fr~ ok 046A D422 eg4 RC~E~b: C~LL P~RCLL :Parit~! la~ clsar 6g~ S~ VLF fla~s cle3r.
~g~ ;
046C 8867 e~7 MOV RO,#DEM~PH ;Maks addrc.~ ~t; cf ?4 comm~r,-i.
04~E FO é~S3 MOY ~,QRO
046F S307 e~g ~NL ~,#07H :~POLINri3 ~--- ,ircp n-Jmbsr : uc~pcr 0471 E7 700 RL ~ ; S bit ~ ~ ~i5~ics ~ddr~~ r lo~sr 0472 E7 701 RL ~ ; 3 bit ~.
0473 E7 702 RL ~ ;
0474 ag '03 MOY R1,A : --04r75 B837 '04 MOY RO,#PRMRPH
047, FO 705 MOV A, ORO
0478 5307 706 ~NL ~,#07H
047~ 49 '07 ORL ~,RI
047B B86A '08 MOV RO,#POLING
047D AO 709 MOV eRo,~
710 :
047E B868 .11 MOY RO,#L~Yl 0480 BOOO 712 MOV eRO,#OH Jv~4 command fla~ set.
0482 B86B 713 MOY RO,#GNTeY :~ ts counter cls3r.
0484 BOOO .-14 MOV QRO,#OH
'lS;
0486 D414 716 CALL YLFOO :8t3rt bit "0~ sst. t:~
717 ;
0488 230B 71a MOV ~,#11 ;-~bd~ancs !~
**~E`~T C~:E'-,'~ ']~**
048~ C4EF ,'20 JMP JMPR ~RETR.
72~ ;
048C E45g .22 bP015T: JMP I~T045 ;bispc,sal of 04 command.
,2~ ;
~24 ;
.25 ;
.-2.' ;
r7;2~3; ***'~1 ~4corl--a4c~ 4CoM-341 r!M-~ rs - 3 1cI-lM-:34c~11M~ 4cOrs-~4cl:lM ~
_ 9 ;~ t .'30 ;* DISPOS~L OF :34 CQMM~ND.
~ ~ 1 ; *
732 ;~** 34COM-84COM-84COM-34crlM-84co~-~4coM-~45qM-:-:4,::,lM-84 ~ ~3;
735;
736; ~ ST~RT BIT T~ ~--- P~ POUTII~E. :~
,~_; , #
7~9;
1 40 . ~ .. , ~ .................... ............
04s3E F8 7 4 1 ~E~TDr~: MOV ~,RO

fILE: ~KI:SHIGI HEL1LETT-P~CKa~D: 80~8 a-~sembler LOC~TION OBJECT CODE LI~E SOU~çE Lr~1E
048F 3D 742 ~tOVD P5,~ ;se 3rt bit tr3ns.
,743 ; , 0490 D4oe 745 C~LL - TSETI ~1 bit time -ounter ~et ~ st3rt.
746 :
0492 D41B 747 C~LL YLFo1 ;Start bit reset stb "1" set.
748 ;
0494 230D 749 ~tOv ~,#13 :~*NE%T C~ST~T~*~
0496 C4EF ~50 J~B J~tPR ;RETR.
751 ;
752 :

754 ;
755 : ~
56 ; ~ ST~RT BIT ER~SE.~ - R`i- ROUTI~JE.
757 #C 1 ~59 ;
760 ; ......................... ~... ............. ;
0493 F8 761 RST~T: ~tOY ~,P0 :Start bit clear.
049g 3D 762 ~OYD P5,~ ;
7~3 ; .................................... ........ .....
7G4 :
04~ D40F 7GS C~LL TSET05 ;Half bit time co~Jr,ter set .~ ~t3rt.
,66 :
04~C Bao8 67 ~tOY P2,#08H ,Bit counter ~et.
768 :
049E 230E 76g ~OY ~,#14 ;-~*~t~EXT CPBSET~**-~
04no C4EF 70 J~P J~PP ;RETP.
,7t ;
772 ;
~3 ;
774 ;~ . n ,75 :
776 : ~ D~T~ ~x ~--- Px ~OUTIt~E.
777 : #C1 4 778 ;~ u~""""~""""""""~, ,7~ ;
30 , .................................... ~
04~2 90 731 PBSET: tOP
04a3 26d8 ,32 JNT9 YD~TI1 :Peceived ~at3 i~
7a3 ; q Qr ~
.34 : i ` `
- 7~5 ;
04~5 D40B 736 C~LL TSET1 ;I bit time count.ier ~et 'i. ~t.3rt.
73, ;
04d7 F431 738 C~LL YLFIo :~ b3t,~ = ,.,1~, ,, 04~9 8481 739 J~P Ct~TDN
7~0 ; ~ C`3t3 = "1". :) 04~8 D40B . 791 YD~TII: C~LL TSET1 :I bit time counter --et t, ~tart.
,''3~;
04aD D4Z9 ,7?3 CaLL PaL~ ;Pari t~." f 13a ~et.
04aF F42B .794 caLL YLFI1 7~5 :
0481 Ea87 ~9G Ct~TDN: DJ~Z P2,5ETPB :Pec~ c end or n~t ' ~7 :
798 ; ~ 8ecei~-e end !

FILE-: ~KI:SHIGI HEWLETT-P~CK~RG: %Q4B ~s embler LOCPTION OBJECT CODE LI~E 3qlJRCE L}~E
04R3 230C 79g Pt~LK5: MOV ~,#t2 :~**NEXT tP~BK]t**
04e5 C4EF 9Q0 J~P J~PR ;FETF'.
. 901;
802 ~ ~1 F'~ ive continue !
04B7 230E 303 SETRB: ~OV ~,#14 ;~*~E`~T ~PBSET~
04e8 C4EF 8g4 JMP J~PR :RETR.
305 ;
.906 ;
807 :
30g ;
.910 ; ~ P~PITY BrT 7~ -- Fx ROUTINE.
9~t : #
313 ;
314 ~ .................. . ................... . . . .
048B 00 31S PaLK: HOP
048C 26D5 816 JNT0 PTYBI :P3rit~" ~it F-:.
31~ : .................... ................. :......... ..
318 ;
048E D40F 3~g C~LL T5ET05 Half bit time cour,t~r 3et c~ ctart 04C0 886~ 321 ~O~ R0,#t~N5P~R ;~:P~rity ~it = 0"~
04C2 F0 a22 ~OY ~,eRo 04C3 12C7 323 J80 l~CK~C
04CS 84CD 324 J~P ~CK~C
325 ;
04C7 D41B 326 NCK~C: C~LL VLFO1 ;~ Parit~,~ crror ! 3 827 ; ~tiCK "1~ set.
828 ;
04C9 2311 929 ~OV ~,#17 ;~ E~T ~NCK0T~t~
04C8 C4EF 830 J~P J~PR :RETF'.
831 ;
832 ; ' P3ritp ok !
04CD D424 333 ~CK~C: C~LL P~RCLR ;P3rit~J fl3g c1~3t~
04CF D414 334 C~LL VLFO0 335 ; ~Ck' "0" 3~t.
336 ;
04U1 230F 337 ~OV ~,#1S ~NE`'T t~Ch'0T~t*~
04D3 C4EF 933 J~P J~PR :RETR.
~3g ~ _ 04DS D40F a40 PT'-~BI: C~LL TSET0S ;Halt bit time cour,t~r srt ~, 3tart.
341 ;
04D2 B86q 342 ~O'V R0,#~SP~R ;P3r~t~J bit = "I"
04Dg F0 343 ~OV ~,eRo 04D~ 12CD 844 J80 ~CK~C ;~P3rit~7~ Ok !~
Q4DC 94C7 845 J~P ~CK~C ;~1Parit~" err~r !~
846 ;
847 ;
~948 ;
~4g ;""""""""" """""""""
350 ;
351 : ~1 ~CK TY;---- R~: P0UTI~E.
~S2 ;
~53 ;""""""" " ""~""
:~54 ;
3~ ; ....................................... ...........

.
flLE: PKI:SHICI HElJLETT-P~C~f~RD: 3q48 ?4s-embl~r LOC.qTION OBJECT COPE LINE SOURCE LINE
04DE F8 856 ~CKOT: MOV ~. R0 : aCK t,r 3ne.
04DF 3D SS7 MOVD PS "~ :
~8: ~........................... ....... .
8S~:
04EO D40F 860 caLL TSET0S :H3lf bit tim~ .r,t-r ~t, ;,. ~t~3rt~

04EZ FF 862 MOV ~.R7 04E3 4380 ,363 ORL ~#80H :Re~p,~n=e f 1.,~ st .
04E5 ~F '364 MOV R7,Q
a~5:
04E6 D41B 866 Cs.~LL ~LfO1 ;Stop bit 1 3~t.
?3F~7:
04E8 ~31~ 868 MOY ~,#26. **~NEXT tLCIN]~*~
04Ea C4EF 36? JMP .JMPR :RETF.
a, o %71:
S7 ~ -.. n .. ,. """"""""",;""","""""""""""","",""",;"""""""""""
~,3 874, ~. STOP 6IT T~ 1. CHuLLEN?;E R~ ONCE MORE.
'375; - #C'_' 8.6 ~.7:
s37a: ...................................................
04EC F8 87? REPRX: MO~ ~.R0 :St-~p bit Tx.
04ED 3D 8?30 MavD P5,s~ :
~3'31: ................................ ....... .
~8c:
04EE D40B ~'33 Cs~LL tSET1 ;1 bit time :sJnt~r s~t I t.3rt.
S84:
04F0 D424 335 C~LL P~RCLR:P4rit~ fl~ ~ le3r.
'386 04F2 D414 3'37 C~LL ~'LFOO :St-rt bit 0 ,~t.
:3a8:
04F4 230B 889 MOV ~,#11 J ~NEXT CKEVD~ **
04F6 C4EF 890 JMP JIIPR ;RETR.
891;
892:
393:
~3.~4 ... ," n .,.. """" """""""""""""""""""""""""""""""""""""","""""", a~5:
:3?6; 1i ;TOP 6IT T~ c. --- FqF Q4 C~MM~NC. :~
'397 #C!_c ?398 899;
qoo ~ ...................................................
04F8 F8 ~01 STER04: 110V ~R0 :St,l~p bit tr-3ns 04~:9 3D 9132 MOVD P5~
9'33 r ...... ~ .. ~ ~ ..... ..... .... .. ...... . .. . .. .
~'04:
04F~ ?D4qB 90S C~LL TSET1 :1 blt time ~_~unt~Sr ~rSt ~ st-3rt.
~06:
04FC B827 907 ~OV R0~#5DMSCC
04FE B002 908 llO- eRo~#o2H :Err~r in-~i- 3t~ t.
0~00 B826 909 MOV R0,#5DMSC1 0~02 eoon ~10 ~oV I~F~O #OH

0504 E48~ '12 JMP R04ERS

-- ` 220 1 338044 FILEI PKI:SHIGI HE~LETT-P~CK~RD: 504a ~c5cmbl~r LOC~TION OBJECT CODE LI~E ~OURCE LI~E
~13 ;
~14 ;
~15 ;
917 , 918 .: ( STOP BIT T~ 3. FOF 84 COMM~NQ.
C~ 1 ~ I # C! ' 1 921 ;
~22 ; ...................................................
0506 F8 9c3 STER84: MO~t' ~,RO :St.~p bit tr3n~.
0507 3D 924 MO~'Cl P.St~ ;
~5 : .................... ... ........ .. .......... .
~6 ;
OS08 D408 927 C~LL TSET1 :1 bit tln~ r,t-r ~t ~ =t.3rt.
928 ;
OSOI:I B86a ~;29 MO~' RO,#POLINl; :tSr~p r~ wi~ r~ t ~30 : t.~ r spon~: but't`~r.
OSOC FO 931 MO~' ~,QRO
OSOD B8S6 g32 MO~' RO,#RE84H
OSOF ~0 933 MO~ ~RO,~ :
- 934 ;
0510 B858 ~35 MO~' RO,#RE84C
OS12 B002 g36 MO~ ~ROt#02H :~ DE~.~'ICE t~ ECU I in~ ~rr~r ! s OS14 B8S7 93~ MO~ RO~#RE841 :Err~r in~i~3t.. ~r ,~t.
0516 BOOO 938 MO~t' ~ROt#OH
OS18 C4~F ~3g JMP DISEND
940 ;
~41 J
~4~ 1 943 ;~~--~~~~~~~~ ~ --------------------------SUB ROUTI~E---~44 ;
94S ; C INFUT D~T~ SET TO 04 BUF. ~- B'~TE COUNTEF INC.ROIJTINE.
946 !
947 ; --------_-_-_--_______-__ _________ ______ g48 :
OSI~ D403 94~ INCi~6`1!: C~LL CNTB.CK
051C 0328 9SO ~DD ~,~SDMS~C~l OS1E ~8 gSl MO~ Ro,~s OS1F FB 9S2 MO~' ~,R3 OS~O ~0 C~S3 1'10~' eRO,~ ' ; Inp~Jt, ~J lt3 ~f, t~, 04 but`.
~S4;
0521 D407 85S C~LL BCNINC ;B~t~ ~unt~t~ In,~ .

~S7 9~0;
g61 ; ~ STOP BIT rx 4. 04 COMM~ND ~LL 0~ I ENts ~ s #C~-l ~64 ;
~S ; ...................................................
OS24 F8 9~56 ST~:;R04: MO~ Q~RO :St~p bit tr~.tn~.
OS2S 3D 96,7 MO~D PS t Q
~68: ...................................................

~: >

~, flLE: aKI:SHIGI HEI LETT-P~CiC~RD: 8048 ~c~mbl~r LOCaTIoN OBJECT CODE LI~ E BOURCE LINE
01526 D40B 9?0 C~LL TSET1 ~1 biS tlmo -qunt~r -ot, o ~t,a,-~, 0~S28 88 7 972 I~IOV R0,#5DMSGC :G~rico 3idress ~~1~3r.
0s2a F0 B73 IIOV ~,QR0 052B 53F8 974 f~NL a, #OF8H
0S2D ?? 9?5 RR ~ ~
032E 77 ?76 RR i~ :
052F 77 g;7 RR a 0530 ~0 978 t~lOY eR0,a ~79:
0531 B41a 980 CaLL INDaBt :Input, ~3t,3 sot t,o 04 buf.
981: ~ byt,~ ~~ount~r inC~rolJt~in~e~
'82;
0~533 10 983 INC QR0 ~!84 , 0S34 F0 985 l~lOV a, QR0 0533 B826 g86 MOV R0,#SC~115G1 :B~,~t,o ~qunt~r b~Jf~or 5~t,, 0S37 f~0 987 110V eR13, a 988;
0S38 E48a 98g JI~IP R04ERS
g~O
gg2 ~4 ,~
99S ; ': NCK T~ - R~ ROUTINE. 3 9g6 ; #C1-g~l? , n n .. ,.................. n n .. N .. n .,"".. ,.,...... ,.. """.,"".. ,.. ,.,... ,.".. """"
gg8 .:
999 ; ,.. ,,.... ,.. ,.... ,,' oS3a F8 1000 NCKOT: MOV ~,R0 :NCI~ trans.
053B 3D 1001 110VD P5,~ .:
11302 , ...................................................

0S3C D40B 1004 C~LL TSET1 :1 bit tim~ c~unt~r ~t ~ ~t.3r~,.
10'35 OS3E FE 1006 110~ ~,.R6 0S3F !5248 1007 JB REPER :Error = 5 tino- O
01541 1.E 1008 INC R6 :Error ~-ount,~r inc.
0S4 D41B 1009 C~LL VLFO1 ''; Stop bit 1 s~t,, 0S44 2319 1012 MOV f~.#c5 :***NE~T CREPR~;~*~
0546 C4EF 1013 J11P JllPR :RETR.
1014;
0S4:3 B868 1015 REFER: MOV R0,#LaV1 5 t~lmos ,~rrqr ! ,~054P~ F0 1016 MO~.~ R.eRO :Di3pos.31 .gt' 04 c~mm3nd or ")'7; 84 ~-omm3nd ?

054D D41B 1019 C~qLL VLFO1 04 ~-omm3nd ~r~ r r~spon~
1020: stop bit, ~ t,, 1 0~1 :
05.4F 2316 10 2 1~10V f~,# ~ :***NEXT tSTER':4~*-~*
0551 C4EF 1023 JMP JMFR :FETR.
1024;
0~SS3 D41B 10~3 JER84: C~LL VLFO1 ::3- ~: dr pollin~ ` :rror r~=por,_~, 1026 ~ =t.3p bit r 1 " ~t,, FILE: ~KI:SHIGI HEWLETT-PRCK~RD: 804a ~s~embl-r LOC~TION 08.JECT CODE LINE .;OUFCE LINE
10Z7 ;
055~ 2315 1028 ~Q~ ~.#21 ~ NE,:T [STER34]-~
0557 C4EF 1029 .J~P I~PP ;PETP.
1030 :
103t ~32 ;~ n 1033 ;
~034 ; ' L~ST CH~R~CTER INt!IC~TOR CHECK.
1035 ; #D
1036 :
1037 :
1038 ; ....................................... ...........
05S~ O 103g LCIN: NOP
OSS~ 267B 1040 ~NTO LCIEt~ ~L3Ct char3ct~r indi.-atqr 1041 ~ d~t~ct.
~042 ; ~
1043 ;
055C D40F tO44 C~LL TSET05 ,H~l~ bit time count~r s~ t3r~.
1045 ;
05SE 8869 1046 MOY RO,#L~V1 0560 FO 1047 ~OY ~,QRO
OS61 C66F 1048 J2 t~I84 ;Dispo~al of a4 command or 104~ :
0563 D403 10SO C~LL CNTBCK ;ttyt~ cqunter ch4ck.
0~65 D304 10Sl XRL ~,~4H ;D~t,~ ~= 5 b~t~ ~
056~ C6aE InS2 JZ LCIER ;~ Q4 ~rrsr.
lOS3 ; gqod !
OS69 D418 1054 C~LL ~LFOt ;~: Di po~31 o~ 04 comm~nd !
lOS5 ; Stop bit -1~ s~t.
10~6 ;
OS68 2312 1057 ~OV ~,*13 :**~NEXT tSTGN04]**~
OS6D C4EF 1058 J~tP J~tPR ;RETR, ~O~g ;
056F D403 1060 8~I~4: C~LL CNTBCK
OS71 D304 106~ ~RL ~,#4H ;Data C- 5 b~r~t~ ?
OS73 C6g4 1062 JZ DY84 :~ a4 ~rror.
~063 1064 ; good !
057S D41tt 1065 C~LL ~LFQ1 ;~ Di~po al c~f 31 comm3r,d ! .
1066 : Stqp bit 1 set,.
~06~ ;
OS77 2310 1068 ~0~ ~,#16 :***NEXT CSTGN~4 057~ C4EF 106~ I~P J~PR :PETR.
~070 ;
0578 D40F 1071 LCIEN: C~LL rsETo5 :H~14 bit ~.ime cc.~rter ~e~ t3r-t.
~072 ;
OS7D 8868 1073 ~0~ RO,#L~
OS7F FO 1074 ~0~ ~,eRO
0580 c6at 107S .J2 ENSTa4 0582 D41B 1076 C~LL VLF01 ;' Di~pqcal ~ 0-~ c,mm~nd ~qp ~it 1" =~
10~8 ;
OS84 231a 10.~g ~0~ ~,#24 ~**~NEUt t~TlR04]~*~
05q6 C4EF 10aO JrP J~PR RrTR.
08~ ;
lOa2 : ~ Disposal ~ 34 c,mm3rd !
0583 D41B 1083 ENST34: C~LL ~LFO~

`-- 1 338044 FILE: aKl:sHrGl HE4LETT-P~CK~RD: 8048 ~ mbler LOC~TION OBJECT CODE LINE SOIJRCE LINE
1084 : Stop bit 1~ set.
1035 ;
os8a 2317 1086 MOV ~,#23 :#**NE:cT tSTGR34]~*~
0S8C C4EF 1037 JMP JMPR ;RETR.
t o~a:
1039 ~ ~r~ter than ~ b~Jt.~! ) 058E D41B 10~0 LCIER C~LL '~LFO1 :-' r,i~pos31 or ~4 c~mmand ! `
1091 Stop bit "1~ ~et I Og2 0590 2316 10g3 MOV ~,#22 :**~NEXT t,TER04]~
0S92 C4EF 1094 JMP JMPR ;RETR.

0S94 D41B 1096 DY34~ C~LL VLFO1 ;~1 Di~p~sal ~r 34 ~,~mm3nd 1 ) 1097 ; - Stop blt "1~ set.
10~8 ;
0-S96 2315 10gg MOV ~,#~1 ~t~NEXT ~STER34]~
05g3 C4EF 1100 JMP JMPR ;PETR.

1102 ;
1103 :
t104 :"""-'~
t l OS :
t106 ; ~ STOP BIT Tx S. 84 C0MM~NMb ~LL OK ! ENt) ~ .~
1107 ; #b73 oa ;~.1.. r ,.. ,.,"" ".,u.. ,.,.. ,.. """".,.,.,"""""""""""""""""""".,"""","""",""""""
1 1 0~ ;
11 10 ~ .. , ... -0S9~ F8 1111 STGR34: MOY a,RO Stop bit tr3ns.
059B 3D lil2 MOYD PS,~ :
1113 ...................................................
1114 :
059C D40B 1115 C~LL TSET1 1 bit tin.e counter ~et. ~. ~t3rt.
1116 ;
OS9E B4CC 1117 C~LL REDSTB ;P~;pon~ data -et to 34 burfer~
11t8 :
0S~0 886~ t11~ MOV R0,*POLING ~Di~pos~l .3ddre~ burfer set.
05a2 F0 1120 rtoY ~,eR0 0S~3 B856 tt21 MOV R0,#RE34H
osas ~o 1122 MO~ QR0,~
0S~6 D407 1123 C~LL SCNINC S~t- coune~r buffer set.
0S~8 F0 1124 MOV ~,QR0 05~ B8S7 112S MOV R0,#RE841 OS~B ~0 1126 MOV QRQ,~ :
osac c4aF 1127 ortP DISE~D
1128 :
112g ;
1130 ;
1131 ~ -- 4 ~ " " " "
1132 :
113~ ~ STOP SIT T~ 6 84 COMM~ND D~ D~T~ C0!JTINUE.
#C16 1135 :
113~ :
11~7 , . ...................... ....... ......
05~E F8 1138 STC~84: rtW ~,R0 ,StQp bit ~r3ns.
05~F 3D 113g MOVD P5,~ :
1140 ; , ... . . . ..... . .

' 224 1 338044 FILE: ~KI :SHICI HEI~JLETT-PaCK~RD: B0~8 ~c~mbler LOCATlOt~t OttJECT COQE Ll~tE SOURCE LINE
~141 :
05B0 D40B 1142 C~LL TSET1 :1 bit tim~ count~r set ~ start~
1t43 :
0St-t2 B4CC 1144 C~LL REDSTB :Input data set to 84 command 1 1 45; bu t` fer.
05B4 D4Q7 1146 C~LL BCNI~iC ~B~te counter Inc.
1147 ;
OSB6 D422 1148 C~LL P~RCLL ;Paritv flag clear 1149 ~ ~LF flags cle3r.
1150 ;
0588 D4t4 1t51 C~LL VLFO0 1152 ; Start bit "o~ ~t.
1~3 :
05B~ 2308 1154 t~OV ~t,#11 :~**NEXT C~EVD~-]~
05BC C4EF 11S5 ~MP Jt`tPR ;RETP.
~56 ;
~57 :
~5~ :
115g J~ ,... -... ....u 1160 :
i161 ; ~ STW BIT Tx 7. 04 COttM~ND D~T~ Px CONTINUE.
1162 #C1 ~163 J ~ n ~ ~ " ~ " ~ " "
t164 ;
1165 ; ...................... .................. ;
05BE F8 1166 STGN04: t~tOV ~,R0 ;seOp bit trans.
05BF 3D 1167 MOVD PS,~ ;
~68 ; ...................................................
1 ~ 6g 05C0 D40B 1170 C~LL TSET1 :1 blt time counter set ~ start.
117~ ;
05C2 B41a 1172 C~LL IND~B~ :Input data set to 04 buf .
1173 ; but~ counter ir,c. routin~.
~74 ;
05C4 D422 1175 C~tLL P~RCLL :Paritu flag clear 1176 ; ~ ~LF flag= cl~ar.
11.7 ;
05C6 D414 1178 C~LL VLFO0 1179 ; Start tit- "O" set.
~180 :
05C3 ~30E 1131 MOV ~,#11 - :~ltE,T tkEfD~ **
05C~ C4EF 1182 Jt~tP JMPR :RETF.
1t33 :

~85 :
11a7 ---------------------------------------------------SIlE POUTINE---1188 :
1139 ; t RESPONSE D~T~ ET TO :~4 BIJFFEF.
11g0 :
1~g1 ; ------_- ________-__________ _______.___ ~g2 :
05CC D403 t1g3 PEDSTB: C~LL CNTBCK
05CE 03S8- 11g4 ~DD ~,#RE34C
05D0 ~8 11g5 t~tOV R0,~
05DI FB llg6 MOV ~,R3 05D2 ~0 11g7 MOV OR0,~ :Input data set to 34 buf.

`` I 338044 .

-ILE: ~KI~SHIGI HEWLETT-P~CKaRD: ao48 ~ss~mbl-r LoCaTInN 08JECT CODE LI~E SOURCE LI~E
OSD3 83 l 198 RET
11~9:
1200 ~
1201 , ________________________________ _______________________ 1.02 ;
1203 ;~* 04COM-04COM-04COM-04l`0M-04COM-04COM-04COt1-041-OM-04COt1 1204 ;~
1205 ,~ DISPOS~L OF 04 COMM~ND. *
1206 :~ *
1207 ;~**~ ~4con-o4co~-o4cot1-~4coM-o4l:o~ 4cot1-~4cot~ 4cqM-o4coM ~*~
1208 ;
1209 ~"~ ~ ~ " """----"~"-~""-~ ""-~-~"""---~-- ~--------------------u 1210 :
1211 ; ~ ST~RT 61T T,~ --- 04 COM~ D.
1212 : ~D20 1213 ; u n ~ u u n -~ n .. .- n .. n .. "........ ,.. ,....... u., 1214 , 121~ ,. ...................................................
05D4 F8 1216 COM04: MO~ a,RO ~St.3rt bit, tr.3ns.
05D5 3D1217 MO~D F5,a 1218 , - ................................... .. ... ....... .
1219 ;
OSV6 D40B1220 caLL T8ET1 :l bit t~im~ count,~ t ~Y =t.~rt.
1221 ;
- 05Dg B8271222 MO~ RO, #SDMSGC
05Da FO 1.23 ~0~ aJeRo 05DB B85D1~24 MO~ RO, #TXBUF T.~ but`f~r ~:--- c~mm3n-J (04' 05DD ao~ 1225 ro~ eRo~a 05DE B86B1226 YO~ RO,#L~
05EO B0131227 MOV eRo~4~L~'1J ~ CK3.
05E2 D4141228 caLL ~LFOO:MI bit "O s~t.
- 12~9 :
05~4 23021230 MO~ a,42 :~**NEXT ~ M100~*~*
05E6 C4EF1231 OMP .JMPR :FETR.
1232 ;
1233 :
1234 ;
1235 ;~~ OO~~u """"""""
1236 ;
1237 ~ 04 COMM~D D~T~ T~
1238 - ~6 1239 ; n ~ o ~ o 1240 ;
1~41 .,... , " ,. ............. .. .. ...... .. ...
OSE8 F8 1242 OOM04D: MO~ a,RO ,:5S3rt, bit~ T,~.
05E9 3D 1243 MO~D R5,a 1244 ; .............................. ~
1245 ~
05Ea D40B 1246 caLL TSET1 1 bit tim~ Jnt~r s~t & _t~rt,.
1247 :
05EC D403 1248 caLL C~TBCK
OSEE 0327 1249 ~DD a, ~SDMSGC
05FO a8 12SO MO~ RO,~ :
OSF1 FO 1251 MO~ a,eRO
05F2 B85D 1252 MO~ RO,~TXBlJF ,T~ buff~r ~ .3t,.~ =~S.
05~4 ao 1253 ~o~ QRaJa 05F~ ~8~8 1 ~4 ~o~ Ro,#~a~

;~ 1 338044 F}LE: ~KI:SHIGI HEldLETT-P~CK~RD: 8048 ~ mbI~r LOC~TIO~ OB~IECT CODE LINE SOURCE LINE
05f7 B009 125S MOY ~R0,#~ :CL~Yt3 ~ CK4.
0SF9 D41B 1256 C~LL '~JLFOl :MI bit "1" ~-t.
1257 ~
05F9 2302 12S8 ~Y ~.. #2 :**~NEXT ~:MIOo~*~*
05FD C4EF 12S9 JMP JMPR :RETR.
1260 :
1~2 , 1264 ------------------------------------------EUB ROUTINE~
126~ :
1266 : C 8'tTE COIlNT E ï TE CHECK.
126~ J
1~68 :

0SFF 8826 1270 BCNTBC: MOY R0.#SDMSGl 0601 f0 1271 MOY ~QR0 1273 :
1274 :
~,75 ---------------------------------------------------~UE ROIJTIrlE---~76 ;
1~7r : C B~'TE C0UNTER CHECK. 3 1278 :
12,, ; , -- - --- -_ __-__--________ ___ __________ 12~0 ;
0603 B86B 1-81 CNTBI:K: MOY R0,#CNTE't 0605 F0 1282 MOV ~,~R0 128~ J
1285 :
12g6 -------- ------------------------------------SU6 ROUTIrlE---1287 :
1288 C E'tTE COUNTER INC. ]
1~8g :
1~g0 ~------------------------__----__-_--_____________________________ 1291;
0607 B86B 12~2 BCNINC: MO~.~' Ro~#CNTEr 060~ 10 12?3 INC eR0 060~ 83 , 1294 RET
l~?S :
1 2g6 12~8 ;
IZ99 C 1 BIT TIME C0UrlTER SET.
1300 :
1301 ; --____-_______--____________________ 1302 ;
060B 23EF 1303 TSET1: MOY ~.#23q 130~ ;
1306 :
1307 ~------- - -------------------------------------Sl!E FOUTINE--1308 ~
1309 ~ ~ H~LF EIT TIME COIJNTER SET 3 1311 ;-----------------------------------------------------------------"

-`~ 1 33894~

FILE: ~KI :SHICI HEWLETT-PRCKRRD: 8048 ~ssembl~r LOC~TIO~ OBJECT CODE Lr~E SOURCE LIHE
1312 ;
060F 23F8 1313 TSET05: MOV Rr#248 1314 ;
0611 62 1315 TIST: MO~ T.R
0612 4S t316 STRT C~T
0613 83 131. RET
131 8 :
131~ :
13C0 ;----- ----------------------------------~UB RouTIrlE
13~1 ;
1322 ; C VLF OUTPIJT DRTR " 0~ 5ET~
1323 ;
~32 4 ; ------ -- ---- ---- -- ---- -- -- ---- -- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 132S ;
0614 B837 1326 '~LFO0: MOV RO,#DRM~FH
0616 F0 1327 MO~' a,eRo 0617 S30~ 13~8 RNL R,#0~H

1331 ;
1332 ;---------------------------------------------------SIJB RouTIrlE
1333 ;
1334 ; C VLf OUTPIJT DRT~ " 1 " SET.
133~ :
1336 : -------------_-_-_____________________ 1337 ;
0618 8837 1338 VLFOl: ~O~ RO,#DRMRPH
061D F0 1339 ~O~ ~,QRO
061E 4308 1340 ORL R.#08H
0620 ~8 1341 VLFOST: MO~' RO.~ :
062t 83 1342 RET
. 1343 ;
1344 ;
1345 _____ _ ---------------------SUB ROUTIrlE---1346 ;
1347 ; C PRRI TY FL~8 CLE~R.
1348 ;
134g ; ------_____-___--____________________ 13S0 :
0622 BE00 1351 PRFCLL: MO~ R6~ #0 U~LF ~1 a~s ~-le~r .
13S2 ;
0624 B869 13S3 P~RCLR r~o~' R0r#RNSP~R :Paritv fl.a~ r.
0626 B000 1354 MO~ QR0 ) # 0H

1356 ;
13~ ;

1359 ;
1360 ; t PRRITY CHECK. J
13~1 ;
1362 ;
1363 ;
0629 B869 1364 P~L~r~: MO~ RO,#RNSPRR

1367 !
1368 ;

FILE~ RKI:sHlcI HEWLETT-PQCKaRD: 8048 assembler 1 3 3 8 0 4 4 LOC~TION 08JECT CO~E L-INE SOURCE LltlE

13~0 ;
1371 ; t Error rasponsa ~t to 04 buff~r.
13~2 :
~373 : -------- _ __________ 1374 ;
062D 8827 137S ERRSES: hO~ R0,#5DMS8C :Error In~ 3t~ .
06ZF FE 13~6 MOV a,R6 0630 D236 1377 JB6 ERRSEa 0632 8003 13~8 MOV eR0r#03H ;< ~bnorm31 error !
`0634 C438 1379 JrR ERRSEE
1380 :
0636 8001 1381 ERRSER: MO~' eRo,#o1H :~ norm.31 ~rror 0638 8826 1382 ERRSEE: MOV R0.#5DMSC1 063a 8000 1383 MOV eR0.#0H
063C E48~ 1384 JMP R04ERS
1385 ;
1386 :
1387 ;~ uu-------~uu -u~ """"""""""""""~

1389 : ~ aCK CHECK 3 '--- 04 COMt1~Nr.
#D29 1391 3~U n ~ n u U U ~ u U ~ n U ~ U ~ U N .. u..u.. uuu.- n u.. u........ u... -.. -.-... -.-.
1392 :
1393 : ''' ' '' ' 063E 00 1394 aCK3: NOP
063F 2648 1395 JNT0 acKER ~ ;aCK blt R~.
- 1396 : ...................................................
1397 :
--06~1 D40F 1398 CaLL TSET05 ;H~lf bit timæ ~ount~r sæt ~ ~tart.
139~ J
8~i3 FE 1400 MOV a,R6 ;RCK ?
0644 D2S4 1401 J86 aCKSSC
0646 c44a 1402 JnP aCKER2 1403 : RCK arror.
06~8 D40F 1404 aCKER: C~LL TSET05 ;Walf bit timæ co~Jr.tær ,æt ~ ,tart.
140S ;
064~ FE . 1406 aCKER2: MOV ~,R6 0648 52~D 1407 JB2 aCEND ;S tim~i ærror ?

064E D414 1409 - CaLL VLF00 - ;Ra-~h311æn~æ.
1410 ; St~rt bit "0" ~æt.
1411 ;
06S0 231.4 1412 ~~ a.#20 :~*NEXT <COM04`~**~
0652 C4EF 1413 JMP JMPR .~RETR.
1414 ;
06Y4 B824 141S aCKSSC: MOV R0,~5DMSCK :(~omm3nd onl~!~
06S6 F0 1416 MOV ~rQR0 0657 325F 1417 J81 RWhûD ;.
06S9 B826 1418 MOV R0,#SDMSG1 06S8 B040 1419 MOV QR0,#010000008:
06SD E48a 14Z0 JMP R04ERS
1421 :
065F 126D 1422 RWMOD ! J80 RDMOD ;Comm3n~ ~ RD or WR ?
066t 8868 1423 MO~ R0,#CNT8Y
0663 8001 1424 MOV QR0,#1H
066~ D4Z2 142S CaLL PaRCLL :P3rit~ fl.39 ~læ~r FiLE: ~K}:SHIGI HEI~LETT-P~CK~RD: 304a ~s~mbl~r LOC~T}aN 08JECT CODE LINE SOURCE LINE
- 1426 ; ~ YLF f l395 clcar.
0667 D414 1427 C~LL VLFOO
1428 ; St.3rt bit "O" ~et.
1429 ;
1430 ; ~-~omm~n~ + mcs,;g~!~
0669 230~ 1431 MOV a.#10 :*-~*NE.'T ~COM04D'~*
066B C4EF 1432 JMP JMPR :RETR.
1433 ;
06~D D422 1434 RDMOG: C~LL PaRCLL :P3rit~: fl3.~ cl~3r 143S ; ~ VLF fl39 _le.3r.
066F 8B68 1436 MOV RO,#L~
067t 8001 1437 MOV eRO,#1H
0673 B86B 1438 MOV RO.. #CNTBY
067S BOOO 1439 MOV QROr#OH
0677 D414 1440 C~LL VLFOO :St.3rt blt "O-- sct.
1441 ;
1442 ; ~.-_omm~nd ~ sporsc!~
0679 2308 1443 MOV RJ#~ *~JEXT CKE~D~Y~*
0678 C4EF 1444 JMP JMPR :RETR.

- 067D C42D 1446 acEND: J~P ERRSES
1447 :
1448 ;
1449 :

1452 ~ ~CK CHECK 1. ~:--- 04 COMM~ND.
1453 #~C
14SS ;
1456 : - ''' ' ' 067F 00 1457 ~CK4: NOP
0680 2689 1458 JNTO ~ERCK ~CK bit .-he._k.
145~ ; ....................... .................... ... .
14~0 ;
0682 D40F 1461 C~LL . TSET05 :H3lf bit timc ~o~ntcr ,et ~ st.3rt.
1462 ;
0684 FE 1463 MOV ~,R6 ~ CK ! J
0685 D293 1464 JBB ~OKCK
0687 C48B 1465 .JMP ~ERCK2 1466 ;
1467 ; ~. NCK
0689 D40F 1468 ~ERCK: C~LL TSET05 :H31f bit~ timc co~Jnt~r s~t ~ st3rt.

068B FE 1470 ~ERC'tc: MOV ~R6 ;5 timcs ~rror ?
068C 52~7 1471 JB2 ~ENCK

06aE 1E 1472 INC R6 ;Error ~-o-~nt~r In--.
1473 ; C~3ll~r.-~ on-~e m-~r~.
068f D4c4 14?4 C~LL P~RCLR :P3rit-. fl~g ~le3r.
06~1 C4~1 1475 .JMP ~04CON
1476 ;
0693 B4FF 1477 ROKCK: C~LL BCNTBC :~ ~CK ~ FCK ok !
06gS 5307 1478 RNL ~,#07H
0697 ~9 1479 MOV R1,~ :

06a~ D403 1481 C~LL CNTBCK
0698 Dc 1482 ~RL ~,R1 .

` ~ ~

FILE: ~KI:CHJGI HE~ETT-P~C~RD: 8048 ~ssenhler i 338 LOC~TI~ OBJECT COC~E LI~E SolJRCE LINE
069C C6~g 1433 J7 END04W ~T~ operaeion end or not, ~
069E 10 1484 INC ~RO
069F D424 148S C~LL PaRCLR ! P3rit~.~ fla.a ~_le3r.
1486 !
1487 : C Tx oper3~ion ._or,tin-Je 1488 : for 04 ~o~ ! ) 06al D414 1489 ~04CON: CaLL ~LFOO :St.3rt bit 0~ iYt.
1490 .:
06a3 230a 14q1 MOV a,410 :***NEXT ~COM04D~**~
06as C4EF 1492 JMP .JMPR :RETR.

06a7 C42D 1494 ~ENCK: JMP ERRSES ;04 conn3n,i respon3e error, '495 : Error ~nii~ator ~et;.
1~96 1497 ! ~ T opYr.3t:ion ~n~ for 04 .~om 06~ BB26 14qB END04W: no~ RO,#SDMSGl 06aB B040 1499 MOV eRO,401ql)0VOOB;
06~D E48a 1500 JMP R04ERS
~501 :
~502 ;
~503 :
151)4 ;
150S .~----------------------------------------------------~U6 ROIJTIHE---1506 ;
15V7 ; C JMP TO HE~D R~IJTINE.
~508 ;
~5~9 : - _-__-_______________________ 1510 !
06aF D422 1511 DI8END: C~LL P~RCLL :P3rit~ fl.39 ~~le3t ~51~ : ~ VLF fl~,a~ ~_IYar.
0681 B857 1513 MO~ RO,#RE841 06B3 FO ~5~4 ngv a,eRV
06B4 F2Ba 1515 JB7 JPICL
06B6 231B 1~16 no~ a,#c7 96B8 C4EF lS17 JMP JMPR
1~18 ;
06Ba FF 1S19 JPIDL: MOV ~R7 ;Respons~ fl395 ~-teck 06BB F2C~ 1520 .JE7 PCHKS
~S2~ ;
15^c2 ; - ~ no resp~nse 06BD B867 15~3 CO~TDE: no~ ~O,#DEMaPH :~o~ n.i ~-06BF FO 1524 nov ~,eRO
06CO F2CS 1S2S JB7 aLEND

06C3 6477 1S27 JMP DnSRE ;Ge.~i-~e ~ontinu~.
1S28 ~
1529 ;
06CS FF 1530 ~LEND: MOV Q,R7 06C6 D2E8 '531 JB6 PRDR
06C8 C4F2 - lS32 JMP NTDRP
1 !533 1534 ! ' response ! `~
06C~ 537F 1S35 PCH~9: ~NL ~.#7FH
06CC aF 1S36 MO~ R7.~ :ResponsY 13~ el Y.3r .
1537 ;
06CD 92E4 1538 JB4 PRDE~ :
1539 !

231 ~ l 338044 FILE: ~KI:SHIGI HEI~LETT-F~CK~RD: ~04a ~esembl-r LOCRTIO~ 06JECT CODE LINE SQURCE LINE
06CF B867 1540 MO~ R0.#DEM~FW
06D1 F0 1541 ~O~' b,eR0 06D2 F2DF 154c JB7 QUESE
06D4 FF 1S47 MO~ ~,R7 ~545 ;
06D7 C48Q 1~46 JMP CONTDE :
~47 ~
0609 FF 1S48 PRLSFS: ~0~' b,R7 06D~ 4340 1S19 ORL b,.#040H
06DC ~F lS50 MO~' R7,~ ;
06DD C4BD lSSl JMP CONTDE
1S52 ;
06DF FF 1S53 QIJE~E: MO~' ~,.R, 06E2 C4BD 15S5 JMP CONTDE :~ R.R.~ ice p.~ll s lSS6 : R.R.. J~.,p pb 06E4 B2E8 t557 PRDE'.~': J65 PRDR2 :; Fri.~rit,~J de~ ~e p~
1SS8 J ~ P.R.-Jr~p p~ll. J
06E6 C4F2 lSS9 J~P NTC'RP :Next. drbp elect.
~560 ;
06E8 S3BF 1S61 PRDR-: bNL ~,#06FH
06Eb ~F 1562 ~' R7 r b lS63 : -06EB BDSE 1564 PRDRR: MO~ RS.#DEM~F0 06ED C4FC lS65 JMP ;TDFS ;~ Prior~t~ or R.R.de~ic- pbll 1566 ; 6 priorlt~J drop p~
1567 : l-~t, drop sele~t.
1568 :
lS69 ;~ ---------- ---SU6 RQUTI~E---~S7~ ~
1571 . C RETupN ROUTINE.
1572 , 1573 ; - ---------_--_____________________________ 1S74 r 06EF C5 lS75 J~FR: SEL RB0 06F0 2F IS76 XCH b,R7 lS78 ~
1~79 :
1580 ;-----------------------:---------------------------;UB RIJllTIIIE---1581 ;
lS8~ : [ NEi'T ~C!-ESS DROP SELECT. J
1Sa3 ;
1584 ; -- - ----__-____---___________________ 1585 :
1-586 :
06Fc BD5E 1S87 NTOFP: MO~' RS.#DEM~P0 06F4 FC 1588 MO~ b/R4 06FS a8 1589 MO~ R0.b 06F6 F0 1590 MO~ bJ4R0 06F7 F2FC 1S91 JB7 STDPs :Dr-~p -nd ~?1` n~t, -06F9 1C 1592 INC R4 :~ not end ! ~
1593 : Ne~t d-~.?p set.
06F~ E40 1S94 J~P SETSD

156 :

~ 1 338044 FILE: ~KI:SHIG} HE~LETT-PaCKRRD 8~48 R~sembler LOCRTION OBJECT CODE LINE ~O~lRCE LINE
06FO BC31 157 STC~PS: no~,~ R4. #DRM~P o J ~' Qr~p ~nd 06FE B831 1 S8 t1O~,~ R o . ~DRMaP o 0700 F0 1~98 noY R~eRo 0701 720S 1600 JB3 SELSET , Qrop m3p set or not ?

0703 E409 1602 Jnp SETSD
1603;
1604 3 ~ N~t ~et !
O, OS -~304 160S SEL5ET: PIOV f~,lt4 :***NE~T tMTMINTJ***
0707 C4EF 1606 Jr1p JnFR RETP
1 ~07 0709 FC 1608 SETSQ: r1o~ R,R4 ~ S~t !
- 07na a8 160~ nov R0, R
070B F0 1610 ~10Y R~eRo ~f~1 1 J
070C 430 1612 dNS40: ORL R,#08H
070E R8 1613 MOY Ro.R
1~14, 070F FF 161S MOY ~,R.

1~17;
- 0712 231C 1618 MO~ R.#28 :***NE~T tCSCFS4]**~
0.14 C4EF 1619 JMP JMPR ;RETR
1620;

1624;
1625 ; t DROP 6caN FOR S4 cor1r1aNtl ~
1626 : ItD2%
1~28, 162-; .. .. . . .. . ........ .
0716 F8 l63n DSCF%4: no~ R0 Drop ~ n.
0717 3D 1631 MO'r'D PSr R
l632; ................ . . . .. ; . ..
- 1633;
0718 FF 1634 MOY ~, R.
o.19 321D 163S Jsl QSCFJJ
l ~36 0718 D40B 1637 CRLL TSETl - I bit time ~_o~lnt~ t 071Q FF 1639 DSCFJJ MOY R,R7 ;R~spons~ t`l39 c ~ 3r.
071 E 53Ft~ 1640 liNL R ll OFDH
0720 PF 1641 MOY 1~7,P~ :
164~ ;
0721 F8 1643 MOY R . R0 0-22 S387 1644 RNL R,#0%;'H
n.24 B837 1645 MOV Ro.#DRM~PH
0726 ~o 1646 MO~ eR

0727 23n4 1648 t10Y R,~4 i***NEi~T ~MTMINT~*~t 0729 C4EF 1649 JMP JMPR : RETR
16S0;

1652; ~
1653 i-----------_ _ ~ -------------------------SIJ6 ROlJTItJE---.

~ 1 338044 flLEI ~KI:SHICI HEwLETT-pac~aRD: 9Q49 ass~m~ler LOC~TION 06JECT CODE LINE 80URCE LINE
16S4 :
16SS : C YLF INplJT DaT~ 1 n SET.
1656 :
1657 - -------_______________________ 1658 :
072B 97 1659 ~LFI1: CLR C
07ZC q7 1660 CPL C
1661 t 0,2~ F6 1662 ~LFFST: MO~ a,R3 07 E 6, 1663 RRC a 072f aa i664 MO~ R3,a 1~66 :
1~67 ;
1668 ;
1669 :---------------- - -----------------------------;U6 ROUT INE---1670 :
1671 : C YLF INPUT DaT~ o ~ET.
1672 ; --1673 : -- - ----____---________________________ 1~74 :
0731 97 1675 VLF10: CLR C
0732 E42D ~676 JMP ~LFRST J
1677 :
167a :
1679 t ~ -u~ -.. ,"","~"" n .. ,"""""""""""""""""",, 1680 ;
168 t t ~ 4aI T f or 84 COMM~ND DISPoSaL.
1682 ~
- 1683 :~ --- n -----~"""""""""""""""""""""" ""
1684 :
0734 D40F 168S IDLINT: CaLL TSET05 :H3lf bit tim~ ~~ounter s~t ~. tt~rt.
0736 B857 1686 MOY R0,#RE841 :34 buff~r ~mpty.
0738 F0 1687 MOY a.oRo J

16~ :
16~0 :
073B B4FF 16~1 caLL BCNTBC :E~it 04 oD~ration.
0,3D F 45 169~ J67 ST04DP
16~3 ;
F 23'~ 1694 MOY a~#27 ;~*NEXT tItLlNT]*~*
0741 C4EF 169S J~P JYPR
16~6 :
0743 c4Ba 1697 DNTSET Jrp JPIDL :~:34 ~-ff~r ~mpt~.
16~ , 0745 FF 1.00 ST04DP: MOY a,R7 0746 4301 1-01 ORL aJ#o1H
0748 aF '70c MOY R7t~ :

17~4 :
1705 , ----_____________- ____________________ ~7~6 :
~707 :
1-l38 ~ C CH~NCINC OPER~TION TO 31 .
1, oc~, 1 . 1 0:

~ ~ .

FILE: ~KI:SHIGI HEWLETT-P~CK~RtJ: ~045 ~ss~m~lcr LOC~TION 08JECT CODE LINE SOOPCE LINE
1711 :
1~12 ;
1713 : ............................ . ...... ... . .
074B F8 1714 NC~PS134: MOV ~!Rb 074C 3Q 171S MOYCl F~
1716 ; ......................... . .... ....... .. ....... ..
1,17 :
0-4D D40B 1718 C~LL TSET1 :1 bi5 t~m~r .-~Jr.t~ t :~ -t~-t 171a ;
074F FF 1,20 M~Q~Q2: MOV ~R7 0750 12S4 1-21 JB0 ~PI~T
07S2 C4~F 17 2 JMP GISENQ
07S4 53FE 1-23 ~RII~JT: ~NL ~#nFEH
0756 ~F l~c4 MOY ~7 ~
0757 E434 1725 JMF IC`LINT

~ 7 ;----------------------------------------------------'J6 F01,TlNt~
1728 :
1729 ; t 04 C~FaF SELECT. ]
1 , ~ O ;
1731 ; -----__-_______.. ________________________ 1,32 ;
07S9 B825 1,33 INT1345: Mt3~ F0~#5CMS'-H
07SB F0 1.34 MO~ R0 0.5C 5307 1735 ~NL ~.#0~H
075E ~ 1736 MO~ Rl.~ :
07SF B837 1737 MO~ R0.#QRM~FH
0761 F0 1738 MO~ ~,eR0 0762 5307 173g ~NL ~.#07H
0764 D9 1740 XRL ~.. R1 0765 C67B 1~41 .)~ N0CHCE
1,42 ;
0767 Fa 1743 MO~ ~R1 0768 4308 1744 ORL ~.#08H
076~ ~8 1745 MO~ R0.~ :
1746 ;
076B FF 1.47 MO~ ~R7 0,6C 327~ 1/48 JBl C`5F04E
1.4? :
076E 231G 1.50 MO~ ~#29 :*~*NEKT tCSF04CI~*~
0,.0 C4EF 1.51 JMP JMPR ~ :RETP.
1752 ;
0-72 53FG 1-53 CSF04e: ~NL ~.#OFCH
0774 ~F 1754 MOV R7,~ :
077S E477 175S J~P GSF04C
~756 :
1757 ;
1758 ; ------__________---___________________ 17~-? ;
17~0 ;
1761 ; t DROP ;I_~N FnF 01 CI~MM~Nt~. I
1762 : #E-?
1763 ..... n 1764 ;
176S ; ..... . . ... ................ ... ........ .....
0777 F8 1766 QSF04C: MO'. ~.R0 07t8 3G 1767 MO~G P5.~ :

FILE: aKI:sHlGI HEWLETT-P~tCK~RD: 8048 asçembl~r LOCltTIO~ OBJECT CODE LI~E SOVRCE L}l~tE
1768 , ...................................................
1769 :
077a D40B 1770 C~tLL TSETl ,1 bit tim~ ~ount~r s~t.
1771;
077B F9 1772 NOCHGE: MO~' a,Rl 077C B837 1773 MO~' R0, #DRM~PH
0,7E 20 1774 XCH i~, eRt3 0,7F B86C 177S MO~,~ R0~#5~r'DRP
07#1 ao 1 776 MOY eRo . ~ :
1777 ;
1778;
0782 D42c 1779 CaLL PaRCLL :P3rit~x ~`l3q cIe~-~
1780 .: ^, ~.~LF f l .1.~5 ._ l ~ ,r .
0784 D414 1781 C~LL ~rLFO0 :St3rt "0" ~t s~t.
17~2 0786 .314 1~83 MO~r' ar#co ~***NEXT CCOM04J***
0, ss C4EF 1784 JMP JMPR : RETF .

~8 1789 ; C 04 COMM~ND GISF END.

1791 : -- -- -- -- -- ---- -- ---------- -- --------_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1'92 ;
q7sa B86C 1 793 R 04ERS: MO~,' R 0 ! #sa~DRp 07sc F0 1794 ~ MO~ a, eRo o7sD Bs37 17g5 MOV R1, #DRMt~PH
078F 21 17~6 XCH R... ~R1 0790 ~8 1797 MO~ Ro~a 17~8 0791 FF t 79g MO~' a, R7 0792 s2a7 1800 JB2 TSIJGIN
1801;
0794 F1 1802 MOY a, ~
079S D8 1803 XRL a~Ro 07~6 c6aE 1804 J2 MaDaDE
180S;
0,98 B867 1806 MO~r' R0,#DEM~PH
0,9~ F0 1807 MO~t' a,eRo o,9B F2~1C 1808 JB7 TSUG I 2 18d9 ;
d,8D F1 1810 MO~' ¢t,l~R1-o,9E S3i)7 1811 ~NL ~, #07H
0/~o 4308 1812 ORL a.#o8H
07~2 ~t8 1813 MO~' R0.. .~
07~t3 231E 1814 MO~ a.~#3o 07~S C4EF tSlS JMP J~PR
1816;
o,~, s3FB t817 TSUGIN: ~NL ~#OFBH
07-q 9 ~F 1818 MOV R7, ~ ;
1 13 1 ~ ; , 07a~ C4F2 1820 JMP NTDRP
07~C C4~F 182t TSUG12: .JMP DISE-ID
1822 , 0/ aE E44F l 8~3 MaD~tDE: JMP Mac?~c?
1 ~4 F}LE: ~KI:SHIGI HEWLETT-P~CKARD: 304a As~embl~r ,;
LOC~TIO~ 08JECT CODE LINE SOURCE LINE
182~ :
18c6 --------------- - ----,------------------SIJ6 ROIJTINE--t8Z7 r 1%~8 , C CHaNGlN8 THE DE~:ICE MAP.
1829 ~
1630 ~ - ------------_______ ____________________ 1831 , 1~33 ; .............................................. ..................
1834 HEAD aDDRESS TABLE OF THE DE'.'ICE MAF 1.
1%35 ; ...............................................................
1~36 :
07B0 38 1837 ROMTI: C'B D~h10 ~Dr.~p #0 ~: de~ m.~p 1 ~.
1838 ;l 07B1 3D 1839 DB Q~M11 :Drop #1 ~ n 07B2 42 1641 ~B Q~tM1c .Dr.3p #2 1842 ;l 07B3 47 1843 ~B QVM13 .: Dt`~D #3 ~ ~ -1844 :
07B4 4C 184S C`B DVM14 ;br4p #4 184~ ;
07B5 51 1847 DB Q~tM1S :C'r~p #S
1848 ! I
1:349 r I I I I I I I I I I I I

18~0 :
07B6 8837 18S1 QE'.'CH: MO~.' R0,#DRM~PH :D~ t3bl~ h~.3d 3d~r253 sst 07B8 F0 18S2 MO~' A,QR0 : ~ r ~Jrr2nt drop #. i 0789 5307 1853 ANL ~.. #07H
07BB 03B0 1854 aDct a.#ROMTI
07BD ~3 13S5 MO~/P A,Qa 18S6 ~ -078E A9 1857 MO\' R1 J A
07BF F1 1%58 MOV A,QR1 07C0 72F8 1859 JB3 PIJENQ :C~ _2 p.~llin~J m3p -~t, .~r n.~t ?
07C2 F9 1860 MO~ A.R1 :Priorit-J or ro~Jn.i r.3blr ?
07C3 0304 1861 ~DQ ~#4H
07C5 P8 1862 MO~' R0,A
07C6 F0 1863 MO~' a.QR0 07C7 .2CE 18tj4 JB3 PRSET
07C9 FF 1865 MO~ A,R7 ~ , P~7 llin~ t`l 3.~ 3~t ~r.~lJn.~ r.~bir.. ;
07CR 53EF 1%66 ~NL A.#OEFH
07CC E4C!1 1867 !MP RPSETE
1~68 ;
07CE FF 1a69 PRSET: MO~J A,R7 :P~lling t`l.3.~ 3~t~prlorit~.! p~
07CF 4310 1670 ORL a,#10H
07D1 aF 1871 RPSETE: MO~: R" A
1872 ;
07D2 B85E 1873 MO~' R0,4DEMAP0 :RI~ 2 m3p 2 p~int2r~
07U4 B~00 1674 MOV R2,#OH ~Fc = F.F fl3~.
187~ ;
07D6 FA 1%76 DEVPS~ MO~' A,R2 07D7 96DE 1877 JN- 8l~PaC
07D9 BPFF 1878 MO~ R2,40FFH
07DB F1 1879 MO~ R1 :~ bit 0 -1681 ;

FILE~ aKI:SHIGI HEWLETT-PRCK~RG 8048 R~sembl~r l 338044 LOCRT~ON 08JECT CODE LINE SQ1JRCE LINE
07DE BROO t33Z SWFRC: MOV R~,#OH ;~. bit 07EO F1 1833 MOV ~,eRI

07E2 1~ 139S INC R1 1836 ;
07E3 530F 1397 CQ~CT: ~NL a, #OFH :m~p 2 1--- map 1.
07E5 RO 1383 ~tOV eRo~
07E6 D3nF 1839 XRL ~,#OFH
07E8 C6FZ 13~0 JZ DE'tCE ;t`e~io~ end ~
07E~ F8 18~1 MOV ~,RO :
07EB D365 1~2 XRL ~,#t!EMaP7 :G~ m~p ~nd 07ED C6F3 18~3 JZ DEVCE2 07EF 18 13g4 INC RO

1 8g6 07F2 C8 18g7 DE'tCE: DEC RO
07F3 FO 13~8 DEVCE2: MOV R,~RO
07F4 4380 18~ ORL I R,#90H
07F6 ~0 1~00 MOV / QRO,~
07F7 83 1gO1 RET /
1~02 : /
07F8 B85E t~O3 PUE~D: MOV RO,#DEMRFO :De~ e maD I nQt =~t.
Or F~ BOFF 1~04 MO't eRo~ #OFFH
07FC a3 1~05 RET
1~06 ;
1~07 ;
; #~ E~tj ###
Error~ O

H C, ~ . F r ~ n ~ ; n~
~ c~E ~ E
t ;~.~r~
3 ~ *~ . t. ~ :: . * ~ ~ . .. ~ ~. * :. t ~ * ~ * :~
5 SEl,~k'l!_tt~: EPU 01 H
6 SEIc~ Mrl: EQIJ 1 2H
7 SEI-~U ,i: EQU ~8H
8 SEIS~ EQU ? Uc r 5i~n No .
9 :-~ * :-~ - -I ; ~ * ~ f ~ TOSHINC~_C,S :,;
1 1; ~ -* ~C TOSHIB~ NO OS ~
12 ;**~** ~ 705HI a l~tQ OS :~;`>
/3 ;~*~ ' TOSHI ~4Q 0$
14 ~**~
l~ ;*~ ~. Data Form1t 16 ~i~ ~drs H ~ ECIJ ~ddress H
17 ~*~-~* ~drs L --- ~ ECU ~ddr~ss L
1 a : **~** Dat3 Len~th N

19 ~-~i~* ~t~ 1

20 :#***~

21 ***~ n3tJ c ~ Gr~F P C~mmand .' D~t3 ~

22 ;*~*~ , -?3 : ***' D3ta N
24 :~*~* ------ B~ M.T~N~k'.~ L T.INOUE ------25 :***'*
2~ ~i 2' :**~* Function Z~t ! ~#
2~ :*~* ~t~ --- CCC ~ ECU Commml-nic~tion 30 ;*~ Echo Back 31 *~-* Forced Tunina H Off H Keu 32 ;**~*~ 8~nd Functic.n ~ ~LOH~ ~ Te~t 33 i~i*, 34 ~***i ~2) --- Ram B3ck up 35 i*~
36 :*i~*~ (3~ erific~tion 37 ~*~, 3a ~---~
39 i'~-*
40 ,**~**
. i i :l. * ~ J * * * * * * ~ * :~l * * :~ : : * :~ * :l. ~ : * - * :~ . i * :~. * :~l * * * :~l * ~ * : :~. J. *
42 :~S~S
~3 s~SsS ~ Bug List 44 ~SS~
4~ ;SS~SS
46 :SSSSS
4. ; SSSSS
4~ S~SSt 4~ SS~ssss*sssS~ssSSSS~s:ttt*~slSls-itssSt*~s~rr*i~S~ StSSSS.~S
SO
51 , S2 BI~: EQU OOOOH
S3 :

5S PVQGR~rt'~ERSIOH: ERU eI~S ; PS 4 SB P;:_SRC_ERPOF: EQU Bl~,+4 DS 1 S. F~ CFC_Qk_YO: EQU Bl~;~S DC, 4 .

APPEND I X C

HEWLETT-PACKARD: P0:36 as~ bl~r SOIJRCE L I NE
5- IBF_O's'ER_FLOW: EQU 61~S ~ l 2 : DS 2 S~ SC~N_~ODE_FLAG: EQU BIASI 14 ~ QS 1 60 VIEW CHhNNEL: EQU BIAS1l6 : DS 8*~
61 PC_CODE: EQU BIR~132 : DS 8*c 6~ E~JENT_CH~NNEL EQU BIAS148 DS æ
63 : EQU BI~S l 56 64 VLF_ERROR nAp: EQU 6 I ~S~ 1 ~8 ~ DS 128 6S PC_FC_LIST: EQU BIAS~2S6 ~ DS 1 8 66 BASlC AUTHO: EQU B1~51256~lc~ DS 1~g 67 ; B I AS~S 12 6~
;~
~1;
72 A.qOH: EQU 200H
,3 CH_NO_FREq EQU a2ooH DS ~S6 FF~EQIJENC~,~ TaBLE ST~RT FRO~ HEF~
.4 TI~E_T~ELE: EqU a2ooH+1ooH , 8~8~2 7S JU~P ADDRESS: EQU ~ OOH1180H ~ 8~8~.
76 NExT-Go-ADRs: EQU a2ooH~2ooH , 64~2 77 ~ 48 OH
78 TO DROP: EQU OSOOH
7~ TO_CCC: EQU 46bOH
80 ~
81 DS2: EQU 0700H
8~ INDEX_RX 1: EQU DS2 ~
83 INDEX_TX_1: EQU DS2~*~ -84 CTRL 1: EQU DS212~3 85 CTRL_1_COUNT: EQu DR~2~2#4 86 INDEX_RX_2: EQIJ DS2~2*5 87 INDEX_TX_2: EQU DS.~2*6 88 CTRL_2: EQU DS2~-#-8~ CTRL 2 COUNT: EQU DS2 _*8 go F~GE Sw: EQU DS2~2*g 91 ECHO_BaCK_FLAG: EQU DS2 ~*1q g2 REvERS CHa~EL: EQU DS2l~*11 ~3 TX_BuSY_FLaG: EQU DS2~c*l ~4 BaSE_PolNT: EQU DSc~2*13 95 INIT_POINT: EQU DS2+~*14 g6 BlNhRY_LED: EQU DS21c*l5 ~7 ECHO_EACK_aQPs: EQU DS212*l6 '38 ~9 CONY_NO: EQU DS2~2~18 100 DROP NO: EQU DS2~
101 IC_B~tTE: EQU D52~:*2b 102 DEYICE NO: EQU DS~2#21 103 ID_BYTE: EQU DS~-'*~5 104 CONY_NO_BIT: E~U GS2~-*23 1 05 DROP NO BIT: EQU DSc~c~4 10~ DEYICE_NO_BIT: EQU DS- I c~25 108 ~UL_ADR EQU DS2+2~2q : DS 2 STORE #3 14g EXTPN_STAT EQU DS2~c~34 : DS 2 110 TEnp-R CH EQU DS2~2~31 , DS 2 112 ~ 740H
1 13 OBF_BF_N: EQU DS2~2# 32 ~ 0 0 0 0 0 0 0 0 114 oeF-BF-c~D: EQU OBF RF N ~ 1 - --- - . _ .. . .

HEI~LETT-P~C~RD: 5086 ~e~tm~l~r-;ouPCE LINE
115 osF 6F_ID: EQIJ OSF_BF_N+2 116 DBF EF B~TE: Equ 08F_6F_N+3 117 CoN~ ELEcT: Eeu OEF_BF_N+16 D5 8 ~18 I 1~:
12I) DS1- EQU O~B OH
121 NOW_E'-'ENT: EQU DS1 -c BEFOF EYENT: EQU DS1+1 1c3 EVENT_EN~BLE: EQU DS 1 + -1~4 125 LSB_LED: EQU DS1+4 126 ~58_LED: EQU DS1+~
127 H~B LED: EQU DS1+e 128 pp~-LErJ: EQU r.~s1+r - 12q 130 KEy-DaT~r EQU DS1+~
131 ONE_SEC_TI~ER: EQU DS1+10 132 TUNER D1: Eau DS1+11 --133 TUNER_D~: EQU DS1~12 . 134 TUNER_CBL: EQU DS1+13 135 up-FLaG: EQU DSl+ 14 136 DOWN_FL~C: EQU DS1~15 - ,137 PC FC EXI ST: EQU DS1~16 138 POwER_FEED: EQU DS1~1 ?
13g :

142 DS16: EQU 800H
143 DROP_C~D_BF: EQU DS16 DS 16 -144 SPU_C~D_BF: EQU DSl6~16~1 : DS 16 14S FRO~_OBF BF: EQIJ DS1~116~ : DS 16 147 SEND ENaBLE: EQU DS16~16~3 ; DS I
148 SEND-aDDREss: EQU SEND EN~BLE+1 : D~ ~
149 SEND_INDEX: EQU SEND_~DGRESS+2 DS 1 1SO SEND_C~D_RESP: Eau SEND ~DGRESS13: D5 l 1S1 SEND_DaT~_BUFF: EQU SEND_~DDRE~5+4C;S 1~3 1~2 1S3 EVENT_NO_FREQ: EQU ~OOH : DS .~56 1~5 157 ;
1sa:
1~9 ;
160 KEY_D~T~_STaCK: EQU lOb~H: D` 1ë~é1=10c4 161 ECU_~DDRESS:EQIJ KEY_D~T~_STQCk+lë.~61 DS -162 TX_LENCTH:EQU ECIJ ~DD~E5S~- : Cs I
163 TX_COM~BND:EI~II ECU_~CD~ESS~ D5 1 164 TX BUFFER:EQIJ Ecu-l~DctREss+4 CS 256 ~6~ ~
16~ TI~ER COUNTER: EQU OOOH-4 16-9 I NDEX_H I STORY: EQU ~00 OH-2 170 H I 5TORY BUFFER: Eau 2000N
1~1 I-IEI!LETT--P~C~.~PG: :2oBB ~ 1el-SOURCE L I NE
~2 1~3 174:
17~5 Pf~l.E 11EM: EQU 3000H
1;'6 11 ;' STf~C~ EN~: ECIU 3e~FFH
1.8 ST~C1.' TOP: EQU 4000H
17 .?:
1~30: *~*#***~* EO~CK_IJF I~M .qr~.3 ~ '**~I:***~ **t.~:~***~***~ *~:*~*
181 i 1 B2 ES_BQCK_IJP: EC~IJ 0 : GS 512 1 B3 ES_BFICl~_UP_1: EllV c00H : C~- S1:
164 ES_6~I^1';_lJP_~-: EQU 400H i GS Sl ~
181j ES_E'~ENT_TlMEP: EQU 60bH : C~S 1 ~8*fi ~38 i *##~****~*~ edi ~t~- ~3*~ *~*~******~***-~:*** ~'**~*~***~**~' 1'~0:
1 ? 1 MUL_NO EQU
1-~. TIMEP OUT COC!E: EQU b 1-.?3 PLU-7 KE'i' COGE: EQIJ 1 dW
194 E'.'ENT_KE'I'_COClE: EQU 1 lH
l 9i~ f~VTHO_KE'-,~_COGE: EQU 1 ''1-!
1 ~6 Ol`10FF I'E't CODE: EQ.IJ 13H
Igi, l~lltIU-7_~'E't_CO~E: EQU 14H
1 ~8 SCAN_k:E't_COQE: EQU I 5H
1 ~?~ CLEi~P KE'i' COCE: EQIJ 1 ~H
~0d SENG_kEt_COGE: EQU l~H
;201 POI~IER_ON_I:OI~E: EQU 18H
cOc pOI~lER_I3FF_::OGE: EQU 1'~H
c 03 RECENT ON COGE: EQU 1 AH
2d4 RELEASE_COC~E: EQU 1 BH
c 05 KE't_PUSH_COGE: EQU l CH
;~6 207 f3SCII_ER: EQU 457cH
2dB ~ISCIl_PU: EQU 415SI-I
20~ fi i.C I I SC: EQU S343H
c 10 ~SC I l_FI^: EQU 4643H
cl 1 I~SClI_PC: EQU Sd43H
~12 ~SCII CL: EQU 434CH
c13 ~SC I I ;E EQU 5345H
cl 4 PISCI l_fiG: EQU 1164H
21 ~1 ASC I I C`E: EQU 6445H
216 hSC I I_NU: EQU 0Cl481-H
c 17 hSC I l_NO: EQU 0G4C`CH
cl 8 i~SC I l_C13: EQU 43CICH
21~ ASI:II PR: EQU 5d,-'H
c20:
221 PUSH_ALL: EQU 60H
22 POP_hLL: EQU 61 H
c23:
22~ SE~IG_MA:~': EQU 64*r`
22~:
--_----____----_--_____________ ~Z7: *#~***'~## I ~' O F.~I`t **.~'****~*.~:k*~l.**.*****~*****":*".*****.,,~-*22 ~ ; -- -- -- -------- ------ ---- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .. .. . _ . . . . .

- ~ 1 338044 HE~LETT-PACK~PD: B086 ~cc~m~l-r SOUPCE LINE
~2~ 5 230 DROP_C~C~_PORT: ECU 082H
231 DROP_r,~TA_PORT: E8U 080H
232 ECU_H_ADDRESS: ECU 0107H
233 ECU_8_ADt`RESS: E81J 0100H
234 INT_OFST EQU 3~0H~ 5*4 235 INT10FST E~U ~2 237 TIMER1_OFST EQU
238 ACHrJ E~U 00 240 eCHr,` E~V 0~
241 8CHC E~U 06 f 243 246 ; -----CS SET-------------------------------247 ;
,. 248 ; INITIAL SET 'JP I~FX186 24~ :
250 ; -----------_-____________________ ~2S~ ORG 0000H
0000 FA 252 RUN: CLI
253 ;LCS SET UP 161~8 0001 B8A2FF 2S4 MOV ~X,0FFRcH
0004 92 2~ ~tCH~ r~
OOOS 88F800 ~S6 MOV AX,00F8H
0008 EF 2S7 OUT DY.AX
, 2S8 ,:PCS SET UF F~O~ 0000H ~T IXO ~PPED
oo0C 88A4FF 259 MOV AX,0FF~4H
000C ~2~ 260 :~tCHC rJ.t.~.
000D B83F00 761 . MOV ~X.003FH :3-W~ITE; INSERTEC~
0010 EF 262 OUT C`:X.8X
0011 B8~8FF 263 MOV ~X,0FF~8H
4014 92 264 XCHC C~X.~X
4015 B83C88 ~65 MOV AX.883CH
00~8 EF 266 OUT C`~.~X
267 ;MCS ~ET UF 04000H
0019 8aA6FF 268 MOV Dit,0FF~6H
001C 88FC21 269 MOV ~X,21FCH
001F EF 270 OUT DX.RX
271 ;
0020 880020 272 MOV ~X,2000H
0023 8Et~8 273 ~O~ rJS,~i 274 ;
. 27S ;
0025 B80000 276 R~M_CLE~R: MOV 9X,BIAS
0428 880000 ~77 , ~OV ~X,0 0028 8907 778 RA~_CLE~R_LF: MOV tBX3.A:X
042D 83C302 279 aDD 8X,2 0030 81FB0040 280 cMp-Bx~1nol3H
0034 72F5 281 JC r~M CLEAR LP

283 ;
284 ;-------------J~JMF ThBLE WFITE-------------------0036 B80000 ~85 ~OV ~ 0 l 338044 . ~

HE1~LETT-P~CK~RD: 8 086 ~ss~m~ 1 ~r SOURCE L INE
oo3~q sED8 286 MOY D8rRX
287 ,--------------I~IT1 ~DDR.-------------------------------0038 883400 ~7~8 MO-~ 8~. INT10F5T
00-3E C7070002 28q - MO~Y~ IduRD PTR tgX~,COOH
oq42 C74~0200FE 290 MOV IdORD PTR ~BX+2~. OFEOOH
291 1--------------INT3 ~DC~R.
004, 8s3coo 2q2 MOY Bx~rNT30FST
004a C7d70003 -~93 ~o~ WOPD P TR csxl J 3 OOH
004E C7470200FE 294 MOV 1JORD PTR tBXt-'~. oFEOaH
245 ;------ INTO ~t'DR. .'CRSI'RDED IdlTH I~TC.~INT~OX----0053 s8B4oo ~g6 MOV 6x,IN7 OFST
0056 C~070004 297 MO~Y~ WORD PTF tg`'~. 400H
005P C7470200FE 298 MOY WORD PTR tr;~+2~oFEooH
ol)sF C74.0400135 29q MOV I~ORD PTR t8Y~4~ . SOOH
0061 C7470600FE 3ao MOV Idl3RD PTR tBx+6~r~3FEl3nH
006q C74. 0800b~:. 30t MO~.J Idl,lRC PTR tgX~B3.6013H
OO~E C74~0aOoFE 3dc MOY 1,1,7~Rr.~ PTR t8X+10~ OFEoaH
303: ~~~~ ~ ~ TIMER 1 INTR. ~GDR.-----------------------0073 Bp4soo 304 Msy t~,TlMEF:1 OFST
0076 C~070007 305 MOV woRr, PTR tsx~ ~nOH
qo7a C7470200FE 306 MOY WORD FTR CE:~+-3 oFEoaH
3a7 -------------SET UP TIMER----------- ----30~ :
30 ~q :
007F 880020 370 MOY Rx~caaoH
0082 sED8 311 MOV DS r RX
0084 sEDo 3l2 MOV SS.~RX
313 ; --------------SOKH- S~URPE w~ c . --------------0086 8as2FF 314 MOV DS~ oFFscH
0089 8soFoo }15 MOY R~ 15 oooc EF 316. OUT DX. RX
008D BaS4FF 31, ~oy DS: aFF~4H
ooq~o BsaFoo 318 MOV ~X~15 0093 EF 319 OUT col~ b"
ol3~q4 s~5~FF 320 MOV D::~aFFs6H
oaq, B~ a3co .~21 Mav ~ ocoa3H
ooga EF 3~72 OVT DX ! RX
323:--------------TNITIRL SET UP OF DMa CH.O:R;' TR~NS---324 :-------------5l3URCE po INTE8-----------------OO8B 6%aOOO 3~75 MO~Y~ ~X RCHD
oa~qE gbcaFF 326 MO~Y~ D~,13FF10H
oo~1 EF 32~ OUT D`-'.~X
~o~7 8000 ~ MO~' ~LJo OOA4 gRC2FF 32~q M13V DX', OFFC_H
ao~7 EF 330 OUT D:`:.bX
331 :---------------I~IITI~L 'ET UF OF DM~ CH.I- T:' TF~
332 :------ DE ;T I NaT I~l~ F`CII NTER-oon~, t~oooa 333 MOV ~ CHt~
OObB BaD4FF 334 ~,3~,. DX, OFFDsH
OORE EF 335 OUT DX,RX
OO~F 8000 336 MOV RL~a ooe1 s~D6FF 337 MOV DX,OFFD6H
ooe4 EE 338 OUT DX,RE
339 ;- ---ST~CI' SET UP------- -------ooes ecFa3F 340 MOV 5P 3FFaH
341 :------ INITI~L SET UF OF 82,4 ----0088 8018 342 ~ MOV ~L~ooo1looaE :CH.RESET

`Y 1 338044 HEi.JLETT-P~CK~RD- 3036 b~mb I
SQUPCE LINE
ooBa E604 343 OUT ~CHC~aL
344:--PTR ^b--OOBC BBq231 34S ~OV BX.OOIIdO01000000106 OOBF Bao4oo 346 ~OV D:i!bCHC
OOC2 Eq7E01 347 CPLL SETCO~
34R :--PTR ^-B--OOCS B80228 349 ~Y ex. ool Ol 01700~!000q1 06 qQCa 8ao600 3SO nov r~x!ecHc OOC8 E87S01 3S1 C~LL SETCOr 352 :--FTR 1R--OOCE BBq420 353 ~OY B~y.~7oloooqrJo~!oclo1ooE
OODt B~0400 354 YOY DX~bCHC
00~4 E86C01 355 C~LL SETCO~
3S6 :--PTR 4B--OOD7 B80420 357 ~OV Bx~oo1aooooooooo1ooE
OODr~ B~a6oo 3sa ~ov DX,BCHC
qODD E86301 359 C~LL SETCO~
360 J--PTR 7~--000 8B077E 361 ~0~ BX,01111110000001118 OOE3 Bao4oo . 362 ~OV DX,~CHC
OOE6 Eq5ROt 363 CbLL SETCOM

OOE9 B8010C 365 ~OV BX,000011gO00000001B
OOEC Bao6oo 366 ~OV DX,BCHC
OOEF E8S101 367 Cr~LL 3ETCOM
368 :~ RX INIT~
OOFZ B010 369 . MOV aLrO00100006 OOF4 E604 370 OUT ~cHc~aL
371 --PTR 1~--OOf6 eBO1ZC .~7Z ~OV 8X!00101100000000016 OOF9 Bao400 373 MOV DX,RCHC
OOFC E84401 374 C~LL SETCOY
375 J--PTR 5~--OOFF 860SE2 376 ~OV 6X,11100010040001dlB
0102 Bao400 377 ~OV DX,~CHC
0105 E83B01 378 CQLL SETCO~
37q :--RTS OFF--OlOq BBOSE- 3~0 MOV 6X,11100010dOOdO1016 010B Bao40s 381 ~OV DX,r~CHC
OIOE E~3201 3e2 c~LL SETCO~
3~3 ~ ______________ _______ 384 J INITIqL SET UP 7F INTO, INTI ! INT3.UNMRSI'----3%S --INTO---0111 B82800 386 MOV ax,c9H :LEVEL=O.EDI.E TRICCEF.MRSK.CbC.~;
0114 8r~38FF 387 MOV OX.OFF33H
ql17 EF 398 . OIJT D~ x 389 J--INTl---011% B81bO0 390 MOV bX. IbH :LE'.'EL=1.LE~'EL TRIGCER,MRS~
011B 6R3bFF 391 ~OV Dx~oFF3~H
01IE EF 392 OUT D~.RX
393 :--INT3---OIIF E~81qqO 394 NOV RY,1qH :LE~EL=2,LEVEL TFlr;GE?~MRsK
0122 Ba3EFF 395 MOV D;'.gFF3EH
0123 EF 396 OUT DX.R::
397 ~--TI~ER1 INTR.--0126 B80B00 398 ~OV R:~:.10116 :LE~.~EL=3.Ma3i-0129 8a3_FF. '99 nov Dx,dFF32H

~ ~ 245 l 338044 HEWLETT-PHS~:HRD: B096 Hs~mbl~r SOURI-E LINE
012C EF 400 olJT QX.QX
4~fJ1 40~

417 :
18 ; - - _-----______ ________________ 419 :
420 ; Initi 31 i -~
- - 4~t :
4~2 ; ---------___-_ ___________ 423 ;
012D B80000 424 MHIN_3T~PT: MOY QX,O
42S r 0130 8B0005 426 MOY 8X,TO DROP
0133 891E0207 427 MOY CINQEX PX l]~EX
0137 891E0407 428 MOY tINQEit_TX_13.E'X
0-138 ~23E07 429 MOY E'tTE PTR tTEMP P CH],QL
013E ~21807 430 MOY tTX e88~ FLQf.]. HL
0141 Q22407 431 MOY CCONY t~O].RL
0144 Q28107 432 MOY tPOIJER_FEE~].~L
433 :
0147 Q35007 434 MOY tCONY iELECT],QX
014Q q35207 43S MOY CCONY_SELECT+c~.QX
014Q ~3540, 436 MOY tCONY ;ELECT+4].QX
OlSO ~35607 437 MOY tCONY ~ELECT+6].h~
43g ;
0153 Bt30006 439 MOY EX,TO CCI:
0156 891EOC07 440 MOY tlt~QE' TX '].6X
015~ 891EOQOf 441 MOY tINQEi' PX_s~.EX
442 :
015E 420607 443 MOY tCTRL 1].f~L
0161 Q20807 444 MOY tCTRL 1 Cf;llJ~T~.~L
- 0164 ~20EOf 445 MO'J tCTRL 23.fiL
0167 Q24007 446 MOY tO8F_8F_N].HL
016Q Q31407 447 MOY CECHI:l 8HC~ FL~G~.~:^' 016D Q31$07 448 ~OY tREYE~;_CHHNEL3.HX
445 ;
01'0 B80030 450 MOY QX.PQOE MEM
0173 Q31207 451 MO~ tPQGE ;~J]! H '.

0176 B84107 453 MOY BX,OEF 6F CMC~
0179 8G1E1fJ07 4S4 MOY CCTCL_C_~ lJt~T].EX
45S ;
017D 800q 4S6 MOY ~L,10 HEI-!LETT-PHCKRPt~ ~0~6 H~,~mbl~r-501l~5E LI~E
017F ~28R9Z 45.' MCIY tOl~E_'EC_TIMEP].RL
4S8 ;
0182 B80020 459 -~OV RX,HI--TOF";_81_1FFEP
0185 R3FE1F 460 MOV tINCJE::_HI-TClF'-'].H`~
018B E88205 461 CRLL ECU_HtiF5_PEqG
462 ;
01-,B E~tD605 463 CRLL INIT_HllTHCl_TeL :=
01.,E E3F305 464 CRLL INIT_VIEIJ_TEL :=
0191 E84B06 465 CRLL INIT_CODE :=
0194 B0-7F 466 MOV RL,3FH :=
0196 a20E00 46' MOY tSCH~_MODE FL~C],RL ,=
4~g 01'~9 E85606 4.70 CRLL FPE8 CHLC:
01q,C E8D306 471 CHLL CH~N~lEL_HO-EI
019F E8FC05 4.72 CHLL EVENT D~TR_l:L
01~2 E8870S 473 CRLL INIT E'i_TIMEF
4~4 ;
475 ; --==-===========55==========================
4~6 ;
01~5 BB0004 477 MOY BX,ES_E~l.:K_l!P_~
01~8 26813F~SR5 478 CMP WORC' PTP E-;:teX].0H5H~.H
01~D 740~ 479 J2 B~CK_UP_~'qI
01~F 8B0002 480 MOV B's,EB_BRC~ !P_I
0182 26813F~SR5 431 CMP WOF!D FTP E8:tB,.].0H5~SH
01B7 7542 482 0NZ B~CK UP EXIT
01B9 BBF3 4^3 BRCK_UP_KRI: MOV SI.BX
01BB B8FC01 484 MOV ~X,Sl:18 - 01BE B90000 4-,S MOY CX.0 01C1 26326F04 46 eRCK_UF'_CKI: XOR CH,E8:[EX'+4]
01C5 26024F04 487 RDD CL,Eri:tEX+4]
01Cg 43~ 488 INC BX
o 1 ca 48 4a9 ' t~EC RX
01CB 75F4 490 JN.7 BRCK UP Ck'l 4gl 01CD 263R6C02 4g2 C~P CH,E8:t~I+'~
01D1 7528 493 JNZ BHC~ UP EXIT
01D3 263R4C03 4q4 CMP CL,E8:t-I+-~
01D7 .7S21 49S JN- BRC~' UP llONE
4~6 :
01D9 8BDE 497 B~CK_UP_';ES: MOY BX,SI
01DB 81F30002 498 XOR BX,ES BRCK UP t 01DF 81F30004 45t5~ XOR BX,E8_BRCK_llP-2 01E3 891EFC1F 500 MOV ETIMER_C01JNTER~,BX
501 , 01E7 B80002 S02 MOV ~X,5t2 01E~ B800Q0 503 MOV Bx~pRocRRrtvERsIoN
01ED 268~0C 504 BRCK UP CK2: MOV CL,ES:tSI~
01F0 880F 50S MOV tBX~,CL
0tF2 43 Y06 INC BX
01F3 46 507 I~C ~1 01F4 48 S08 DEC ~tX
01F5 7SF6 S09 J~Z B~CK_l!P CK2 01F7 E90100 510 lMP 8HCK UP E'`'IT
511 ;
01FR 90 512 BRCK_UF_~l0NE: NOP
~13 ~

1 338~4~

HE~LETT-PQCKQRD: 8086 Qs5embl~r SOURCE LI~E
01FB Es1 D 05 S 1 4 EQCK_UP_EX I T: CQLL I N I T_T I M_TBL :;
OIFE E83QOS 51S CQLL l~tT-JuMp-TeL ;.
~16 :
0201 BEOoOO 517 no~ sl~FRoGRQnvERA~loN
0204 c604ss S18 ~ov 8YTE PTR Csl3JsElcQKu Yt 0207 C6440112 519 nov 8YTE PTR tS1~13.5E!ShKU_M~ -020B C6~40201 S20 nov 8YTE PTR tS1~23,5EIS8~U QQ
020F C6440302 521 MOV 8YTE PTR tS1~33~5E158KU ~v ;
S23 -S==ZS=~_,I_____A------ __ ____ ~ ____ ,_~
OZ13 B840Qo S.4 ~ov QX.OQ040H
0216 BQSPFF S25 MqV DX, OFFShH
0-^19 EF S26 OUT QX . QX
S27 ; 1~ QL ! QCHC
S28 ; QND QL,01 Ot 1 1 11B
021Q B07F S.9 MOV QL,011111118 021C 8B3C07 S30 nov BX,EXTRN_STQT
021F 8807 S31 nov B~tTE PTR csx3~QL - r 532 ;--U~ QSK--I HTR ` i 0221 B84Coo . S33 MOV Qx~o1on11ooB ;~O~I uNnQsK INTO, INTI, I~IT3. TIMEF1 1~1 0224 BQ28FF S34 MO~' QX~ OFF28H
0227 EF S3S OUT QX, QX
S36 :`' S37 J R~ ENQsL~
0228 B8o3Ds 538 MOV Bx~11o11ooloooooo11s 022B B~0400 53q nov DX QCHC
022E E81200 S40 CQLL sE;COn - 541 : ~ I N I~IITIT~QLIZE TlnER~
0231 B80008 542 ~ov QX~00800H
0234 BQ62FF S43 MOV DX, OFF62H
0237 EF 544 OUT C~X, QX
0238 B801C0 54S nov QX,1100000000000001B
023B BQ66FF S46 MOV DXr OFF66H
0^3E EF 54,- OUT QX, ~X
548 :---- __ s23F FB ' S49 STI
5SO :
0240 E9BDOO S51 Jnp HQJlMEFU~tO

- 558 :
S60 : - sETcn~ for 8c74-0243 aQc3 S61 ~ETCOM: nov QL,8L
024S EE 562 OUT QX,QL
0246 8QC7 S63 MOV QL.BH
0248 EE 564 OUT QX .QL
oc4s C3 565 RET
566 :
S67 : rTR 1 Q---024Q BOOI 568 HQLC_TX_STQRT: Mav ~L"I0000001B
024C E604 569 OUT QSHS,QL
024E BOOF S70 nov QL~oooo1111s .. . . .
_ _ .

`

HEI.~LETT-Pacl~:~kD~ 8086 t~es:-mt~l~r 5nWR6E LINE
02SO E604 571 dUT bl'HC.~L
57, ~ ------------FE'.'ERSE CH.8ELECT----02~2 8005 573 MO~J ~tL,OO1iOO1016 02S4 E604 574 OUT t~CHC~L
02~6 QOt607 5,S ~0~' ~L,6YTE FTF CRE'~'EPS_1H~NELJ
Oc~9 ~23E07 5.~ MOY E'-'TE FTR tTEMtP_F_I:H3 ~L
025C 8~E0 5-7 MO~ ~H,¢IL
025E 2401 5~8 t~D ~L,OOOOOIJO16 0261 DOCO 580 ROL ~tL
0263 OC60 581 OR ttL~o1loollooE
OZ65 E604 582 OUT ~CHC,hL
0267 B005 5B3 118~ ~L.00000101B
026, E606 584 olJT BCHC,hL
026B 8~C4 585 ~0~' aL,~tH
026D i402 586 ~NQ 8L,00l)l30n10g 0~6F OCEO 8, OR ~L,11100000g 02?1 E606 S8~ OUT BCHCJ~L
58,4 ~ -------FTF 5~----------__ -S40 ; MOY ~L.000001018 S91 ; olJT ~CHC,bL
542 : M13~ ~L.. 01100000B
S93 OUT 8CHC,~L
Q273 E8S300 594 CQLL WaIt :RTS HOLD 1c~ UNTIL T-.E~I~E
02?6 E85000 S~5 C~LL ~¢IIT
02?9 E84D00 546 C~LL WbIT
OZ?C E84bO0 597 C~LL L¢tIT
027F E84700 598 O¢ILL WftlT
0282 E84400 58 CRLL Uf~IT
0285 E84100 600 B~tLL l~dlT
0288 Et33E00 601 C¢tLL WbIT
~ 60c l-------------PTk Sb------0288 8005 603 ~ov bL,000001016 028D E604 604 OUT bCHC,f~L
0 8F aO3E07 605 MO~ dL,EYTE PTR tTEMF k_CH~
028c 2401 606 ~HD aL,00000001B
02~4 F~ 6.07 CLC
02q,5 DOCO 608 POL aL
0~87 OC68 609 OR ~L,01101001B
Oc99 E604 610 OWT ~CHC,~L
611 ;~------------- RTS 0~1--------Oc8B B080 613 . MO~ bL,10000000E
Oc9D E604 614 08T ~CHC,f~L
615 :-----------lNlTl~L SET UP OF D~b,CH.1-TX TRt:t~S
616 ;------------;OU~CE POI~TEF: iET---------------------------------t;17 ;------ -DESTlNftTlON POINTER 8ET-------------------------028F 8BC6 61. MOV ~X,-SI SOIJRcE ~[-F.
Oct'~l 40 61g INC ~X
02¢t2 BbDOFF 620 MOV DX.OFFt~OH
OcP5 EF 621 0UT DX.~tX
02n6 B002 622 MOV ~L.OcH
02¢18 B~D2FF 623 MOV QX,OFFD2H
02~tB EE 624 OUT DX~L
02fC 8acl 625 MO~' ~L,CL :TR~NSFEk COUNT
02~E 8400 626 MOV ~H,O
02BO B~G8FF 627 ~OV tO~:, OFFD8H

. _ . . . ~. , ~ .

~ . 1 338044 HEWLETT-P~C~:~RD: 8086 ~e~mbl~r SOU~CE Llr~E
02B3 EF 628 OUT QX. ax 629 ~ TP~NSFER COIJNT-----------------------------------630 ,------------------CO~TROL WORQ SET---------------------02B4 BRDaFF 631 MO'-' Q:t,OFfQ~H
02B7 B88616 632 MO~ RX,01686H
028a EF 633 OUT D':,~'X :QM~ GO !
634 ;-------------wa IT ROUTINE------------------------------0cBB E80B00 635 CaLL ~alT
636 J-------------FlRST 6~'TE OUTPUT
d28E 88DE 637 MOV BX SI : SOIJPCE ~Q~.
02CO ~0. 638 ~OV aL~ t6X~
02C~ E600 639 OUT aCHQ.~L
640 :
OcC4 B0C0 641 MOV hL.11000000B
02C6 E604 , 642 OUT ~CHC.~L

644 ;==- 5==========1,1~ IT====~=======
O~C9 BB0000 645 I~IT: MOV B~,O
02CC 43 646 ~alT1: INC BY
02CQ 81FBFFOO . 64' CM~ B-X OFFH
02D1 7SF9 648 JNE Id~lTl OcD3 C3 649 PET

~51 ~60 ~61 6~7 ~68 66~

6~ I rlTR 3------- ~ ----- -- -- --- -----6;'2 ORG 0~;~ 0 OH
. 6?3 ;eeeee CLI
- 674 :
6~5 ; --________________________________ 67~6 ; *~*~*#**~* 06F I~t~rrupt Op~r~ n ****~***~**~******:~*~ #
67~ ; ----_______________-_-______________ 678 ;
6300 9C 679 OBF_INTERRIJPT:PUSHF : PU H ~LL
63~1 60 680 Q8 60H
6302 E480 681 IN ~L,QROP_C`~T~_PORT
682 ;
6304 8S36100t 683MOV S r ~ tCTRL_~ OUNT
6308 B804 684 ~OV CSII.~L : Q~t,.~ ~t,.~r~

.. . .

HeWLElT-PACKARD: 8086 A~abkr SOURCE LINE
630A 46 685 INC Sl 630B 89361007 686 MOV [CTRL_2_COUNT],SI ; Pointer l~crnent 687;

6312 FE064007 689 INC BYTE PTR [OBF_BF_N] ; D~ Lenglb bl~nent 63168AOE4007 690 - MOVCL,[OBF BF N]
01A8A6401 691 MOVAH,[SI+I] ; AH=Comm~ndByte 01D 80F901 693 CMP CL,I

6322 B001 695 MOV AL,I ; I BylcRapon~e 6324 80FCC0 696 CMP A~S0 ; [ 00 1 [ 07 027 7429 697 lZ RESPONSE_CNK
029 80FC07 698 CMP AN,7 02C 7424 699 IZ RESPONSE_CHK

701;
031 80F902 702RESPONSE_2: CMPCL,2 6334 72F8 703 JC OBF RET_I
6336B002 705 MOV AL,2 ; 2 ByteTa,oon e 6338 80FCU 706 CMP AN,34H ; [ 01 ] [ 02 ] [ 03 ] [ 05 ] [ 06 ] [ 08 633B 7405 707 JZ RESPONSE_VAL ; V~liiole Lenglb 633D 80FC04 708 CMP AN,4 ; [ 04 ] [ 84 ]
040 7510 709 JNZ RESPONSE_CHK
710;
042 80F904 711 RESPONSE_VAL: CMP CL,4 ; [ 04 ] [ 08 ] ~ 4 047 8A4403 713 MOV AL,[SI+3] ; Byte Len~h Lo~da 634A 0403 714 ADD AL,3 634C 3C03 715 CMP AL,3 634E 7502 716 lNZ RESPONSE_CHK
6350 FEC0 717 INC AL ; [ 04 ] [ 84 ] En~r Re~ e 718;
6352 3AC8 719 RESPONSE_CNK: CMP CL,AL

721;
6356 8B5401 722 OBF_PAC~ET: MOV DX[SI+l]
6359 80CA40 723 OR DL,40N ; 8742 - - - > 80186 Then OR 40N
635C 8BIEFEIF 724 MOV BXlINDEX HISTORY]
6360 8917 725 MOV IBXlDX
6362 8B5403 726 MOVDx[S1+3]
6365 895702 727 MOV lBX+21DX
068 8B5405 728 MOVDX[slff]
06B 895704 729 MOVlBX+41DX
06E 8B16FCIF 730 MOV DXlllMER_COUNTER]
072 895706 731 Muv I 8]rV

078 81FB0030 733 CMP BXPAGE_MEM
637C 7203 734 JC OBF_MEMO
637E BBC020 735 MOV BxHlsToRy-BuFFER
081 891EFEIF 736 OBF_MEMO: MOV llNDEX NISTORYlBX
737;
6385 8A260E07 738 MOV A~S[CTRL_2]
6389 80FC28 739 CMP AN,4C

741;

:` .
-- ` 1 338044 HE~ETT-pQc~a~ 086 ~sc~b SOURCE LINE
63sE BBlEOao7 74~ Yov 8x, CINGE:~ RX_ J
6392 8807 743 ~ov CB.

6396 sQ64ol 74S RE8PONSE_TRNS: MOV QH~CS1-1I
6399 8827 746 ~ov CBX~H
639e ~6 747 I NC S I

S3gE FEC9 749 DEC aL
63ao 7SF4 7So JN. RESRONSE TRNS
7~1 _ 63a2 FE060E07 - 7S2 INC BtTE PTR tCTRL 2J
63a6 891E0~07 753 ~0~ tI~C~EX RX_~!E:~
7~4 ;
63~a a24007 75S OBF_NEW: MOV tO8F BF N~.~L ; COBF BF_N~
63~D 884107 7~6 ~ov ax~o~F sF ~:~t~
6380 a31007 7S7 MOV CCTRL_~_COUNT~.~X ; CCTRL 2 COIJNT3 = OBF 6F Cr 7~8 ~ _ _ 6383 B80Foo 7S9 OBF RET: Mav ~x.1s 6386 B~22FF 760 MOV Oi'. OFF22H
63B9 EF 761 OUT DX, ~X
63Ba 61 762 DB 6 I H : FOP ~LL

-~38C F8 764 ST I

766 ; ~ TR l------- ~ -- - -----767 ORC 06~00H
768 ;~ CL I
7~9 ;
770 : --------_________ _________ 771 : ~ **~ * Drop Pr~c~s~or IEF Op~ration ~*~*#*~*~#~**~
772 ; ---------- ___________ 7?3 ;
6200 9C 774 IBF INTERRUPT: PUSHF

6202 881E0407 776 MOV BX,tINDEX T:' l~
6206 8ROE0607 777 MOV CL,tCTRL 1 620a 9R260807 778 MOv ~H,CCTFL I COIJNT~
620E 80FC00 779 CMP ~H,O
621 1 7S6C 780 JNZ iBF 2ND
781 ;
6213 80F900 782 IBF 1ST: CMP CL,O
6216 7soa 783 JNZ IBF EXIST
7q4 ;------ MnSK IBF, INTR.
6218 B81~00 785 IBF-EMprt MOV ~X,1~H
621B Ba3aFF 796 MOV D~.. OFF3~B
62 1 E EF 787 OUT C;.~ r ~X

789 ;
6222 9a27 790 IBF EXIST: MOV aH,tBX~
6224 FEC3 791 INÇ BL
6226 8ao7 7~2 ~OV aLJtBX~
6228 E682 793 OUT DROP_CMt~_PORT.~L
79~ ;
622~ FEC3 795 INC BL
622C 891E0407 796 MOV tINDEX TX 1 ~.BX
6230 FECC 797 DEC aH
-~232 88260~07 798 MOV CCTRL 1 COUNT~,~H

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

~_ ~ 338044 HEldLETT-P~CK~RD: 8Qa6 ~s~ r SQURCE LINE
6236 7506 799 !~Z I8F P~C~ET

623~ 88OE0607 801 MOV tCTRL_l~,CL

623E 8B36FEtF 903 IBF PBCKET: ~OV SI,tlNDEX_HlSToRY~6242 8804 804 ~OV tSI~.~L
6244 9~07 805 MOV ~L,tB~
6246 884401 806 ~OV CSI+I~.~L

6248 8ao7 908 ~OV ~L,teX~
624D 884402 809 ~OJ tSI+2~,~L

6252 8~07 811 ~0V ~L,te`.]
6254 884403 812 ~OY tSI+3~,~L
62~7 FEC3 813 INC BL
62S9 8~07 914 MOV ~L,tBM3 62~B 884404 815 ~OV tSI+4~,~L

6260 8~07 a17 ~OY ~L,CB,Y]
6262 884405 . 918 ~OY tSl+~ L
6265 8B16fC1F 819 ~OV DX,tTl~ER_COUNTER~
6269 995406 820 MOV l51+6],GX
626C 83C608 ,821 ~DD SI,8 626F 91FE0030 82Z C~P SI,P~CE_MEM
6273 7203 823 JC IBF_~EMO
627~ BE0020 824 ~OV SI,HlSTORY_eUFFER
6278 9936FE1F 825 IBF MEMOI MOV tINDE~_HISTOR~,SI
627C E91800 826 JMP IBF_RET

62?F 8~07 828 IBF 2ND: ~OV ~L,tBX~
62~1 E680 929 0UT DROP b~T~_PORT,~L
6283 FEC3 830 IBF_SET: INC 8L
62~5 991E0407 831 ~OV tINDE~_T~ ,eX
6299 FECC 332 DEC ~H
628B 88260807 833 ~OV tCTRL_l_C:OUHT~,~H
628F 7S06 834 JN~ IBF_RET

o293 380E0607 ~36 ~OV CCTRL_l~.CL
a3,:

339 ; IN_SERYICE L~TCH RE::ET
6297 B90D00 340 18F RET: ~OV ~,:,13 62~ B~22FF 841 ~OY DM,0FF22H
629D EF 842 OUt DX,~

62~0 FB 845 STI

847 :

949 -~ INTR 0-----------------------------------850 :~~~ ~ E~ternal st3~.us Intr.~~~~

852 : eeeeee CLI

6401 60 854 DB ~QH
6402 E404 8S5 IN ~L,~CHC

HE~.~LETT-P~CR~RG: BOB6 ~ss~rbl~r - iOUPCE LI~IE
a56 '' AA~ EW '~'ER~O~
6404 8~C8 3~7 ~QV CL,~L
6406 BOtO 3~3 MQ'~ ~L,bbOlOOOOB
6408 E604 859 OUT ~SHC ~L
640~ E404 360 IN qL,~C~C
~4nC 8~E8 36~ MOV CH,~L
640E ~03C07 362 MQV ~L,BYTE PTF: tEXTRH_ST~T~
6411 BPt)O 363 MO' DL,qL
6413 8~CS 364 MOV qL,CH
641S DOCO 3B5 F!OL ~L
6417 DOCO 866 ROL ~L
6419 DOCO 367 ROL ~L
641B 7207 868 IS LO't 641D 8RC1 369 MQV ~L,CL
641F 24DF - a70 qND qL,llQ11111B

372 :
6424 8~C1 373 LOY: MO'~ ~L.. CL
6Y26 OC20 874 OR ~L,blllObOOOB

642B ~23C07 376 LQ-: MOV B~TE PTR tE;~TRN_3T~T~,~L
642E 8~C2 377 MO'~ ~L,DL
6430 2410 378 ~D ~L,OOOl ooooe 6432 8~E0 379 MO'~ ~H,~L
6434 8~C1 880 MOV ~L,CL
6436 2410 aal ~ND hL,QOOlOOOOB
6438 3~E0 8~2 CMP ~H,~L
643a 7S3~ 883 J~. EXIT
643C 8~C2 384 MOV bL,DL
643E 2420 3a5 ~HD ~L.OOlOOQOOB
6~0 8~E0 336 MOV qH,~L
6442 8~CS ~87 MQ' ~L,CH
6444 2420 388 ~ND ~L,OOlOOOOQE
6446 3~E0 839 CMP ~H,qL
64~8 8RC2 890 . MOV ~L,DL
644q 24ao 891 ~D ~L,lOOOOOOOB
641C 3qEl ag2 MOV ~H,CL
644E 8OE430 893 ~ND ~H,IOOOObObE
6451 32E0 394 ~OR ~H,~L
6453 7S21 8gS JHZ EXIT
645S 8~Cl - 8~6 TX_U~GRI~: MOY ~L,CL
64S7 2444 3~7 ~HD ~L, OlOOOlOOB
64$9 3C40 89~:t CMP ~L,OlOQObQOE
64SB 7S19 89g JHE EXIT :NOT T`~.. U~t-EPP~IN
645D ttO28 ~00 MQV qL,QOlOlQbOB
645F E604 801 OUT ~CHS,qL
6461 B8100E gO2 MOV ~,Y,3600 6464 B~5~FF ~03 MOY bX bFFS~H
6467 EF 904 OUT bX ~X
6468 B801EO gO5 ~OY ~X~lllOOOOOQOOOQ001B
646B tt~5EFF ~06 MQV DX,OFFSEH
646E EF 907 OUT DX,~X
646F B80300 gO8 MQY ~X,OOllB
6472 B~32FF ~Og MOY DX,OFF32H
6475 EF 910 OUT DX,~X
~ 1 1 gl2 ;XIT: roY ~L,0001000OB
.

~, HEIdLETT-P~C~PG 80~6 ~ bl~r 913 ; OUT aCHC ~L
6476 B038 914 EXIT MOV ~L.0011tOOOB
6478 E604 91S OUT ~CHC.~L
647~ B80C00 916 - MOV ~X 1~
647D 8a22FF 917 MOV BX OFF22H
6480 EF 918 OIJT D~ ~X
q1a ;
6481 B80000 920 MOV ~X O
64a4 ~21607 921 MOV tTX_BUS FL~C~ ~L
6487 ~31407 922 MOV CECHO_B~CK_FL~C~ ~X
648~ 61 923 DB 61H
648e 9D 924 POPF
648C fB 9.5 STI

9.8 q29 g30 -~33 q37 ~38 g39 ~40 ~41 ,q42 943 ;---------------INTR 0-----------------------------------g44 ORG 4651ll)H
q4S :~?1?1?1~l?1? I:L~
46 -----___________________________ 947 ;---------------FIRST RH IHT SHORI-------------------------6S02 8BlE1207 g50 MOV EX I~ORD PTR CR~GE_SIl]
9S1 ;
6506 E400 9S~ HON ! IN ~L! ~CHD ! ~ ST D~T~ INPIJT
6S08 8807 953 MW CB`;~L
6s4a 43 954 INC E:' 65OB 8BC3 9S5 MOV ~X BX
650G B~C4FF 956 MOV D ~OFFC4H
6510 EF 957 OUT DX ~X
6S11 B002 95 MOV ~L O H
6S13 BaC6FF `3S9 MOV D5 OFFC~H
6S16 EF 960 OUT DX ~X
6517 e8FF00 961 MOV ~X .5 651q B~C8FF 962 MOV D ~OFFC8H
651G EF 963 OUT D ~i 6SlE B846~2 964 MOV ~ 46H ;DM~ ST~RT
6521 BaC~FF 965 MOV Ds~OFFS~H
6524 EF 966 OUT D- ~X
967 ------------IN SERV~ L~TCH PESET--------6S S B036 968 - MOV ~L.1)0111 OOOE
6S2. E604 96~ OUT ~CHC ~L

~

HEWLETT-RaC~:aRD: 80~6 ae~mt~ ler - ~ 'iOURCE LI~E
652~ BenCn0 g70 ~OY ~X.1~
6S2C Ba22FF g71 ~OV D:' 0FF--H
6S2F EF 8~2 OUT GX.~X
6530 6t ~73 t`B 61H
6S31 gD ~74 POPF
6S3c FB O-S ,TI
6533 CF ~-6 IRET
9,77 q7g 9,80 g~2 ~~~~~~~~~~~~~~~Special P~. Intr.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

~84 :P~ CLI
S
' a86 ! - ---------------------------------------------~87 : *****#*###*~ HDLC R,~ Interrup~, Oper~t~on -~********************
g88 J -- -- -- -- ---- _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ g~g , 6600 gC ~0 RX INTERRUPT: PUSHF
6601 60 q1 D8 6l)H
6602 E86400 9g2 RX_PC'~: CaLL RX_RECEI'.JE
660S 7256 ~3 JC RX CPC ERR ; CPC Error 660. 83060~0001 ~4 ~DD WORG PTR tRX_CRC OK 1'O+2~,1 660C 8316080000 ~q5 aDC WORD FTR tFX CRC OK 'I'O~,06611 8836t207 ~6 ~OV Sl.~P~CE_-;~JJ
gg7 ;
6615 8B1C g~8 ~OV 8~,tSI~ ; B,t = Recoi~e ~ddr~3=
6617 381E0014 ~gg cnP 8X.tECU_at,DRESsJ
6618 741~ 11)00 J~ nY_~R., 661D 81F8FFFF 1001 cnP BX,0FFFFH
6621 7413 1002 JZ ~Y_hDPS : Cl~b;l ~ddr~=
6623 e3F800 1003 CnP 8X,0 100S . SI --- ECU H ~ddree.
6628 b10014 1006 ~L0H~_CHEt_K:nov aX~tECu ~DDRESS~ . +1 L
662B 234403 1007 ~ND ~X,tSI+~ 2 T~ Lengt,h 662E 3B440S 1008 cnP a~!tSI~ +3 ~1~51 H ~ddres_ 6631 7513 100g JNZ RX RET ; +4 L
t010 ; +5 Ref. H ~ddte~
1011 : +6 L
1012 1 +7 Rr`s.~l T.~ L~n~t~h 6633 83C60S 1014 nY RLOH~: ~DD SI,~ : ~lohl ~ddre-~
1 ~ 1 ~i ;
6636 8~361407 1016 nY_~t)RS: ~OV tECHO_Bal:~_FL~C~,SI ~ ECHO 6S~-k t-:uft`er- ~ddrses 1017 :
663~ 81C60001 1018 ~DD SI,100H
663E 81E60033 1019 ~ND il,331JIJH
6642 8g361207 1020 ~OY l~bPD PTR tP~CE illlJ.';I
1021 :
6646 8038 1022 RX_RET: hOY ~L,001111)006 6648 E604 1023 OUT ~CHC.~L
10.4 r ~~~~~~~~~~~~~~
664a t~80C00 102S noY a',1~
664D B~22FF 1026 hOY G',0FF2~H

1 338g44 HEldLeTr-P~I't~l~PG: Br!:}6 ;i~ ,t~l_r ~tUFr E L I ~iE
S~ ) EF I q27 OUT C -' ~
6$51 B001t 0-8 I-IOY fiL. o~iol3l3l~01t`
~h53 E6041 ')--'? OUT fiCHC f~L
6SS3 600F~ 030 MOr liL . 1 0 13131 1 1 I C
5S57 E504 031 OIJT ~CHC . ~L
C65a 51~ O 3~ r~e r l H
~jc~r~ 9D~ 0-;3 FOFF
1 034 : ---- ------------ ----_ _ __ _ _ __ __ _ _ _ SS~iB FBI 035 ;TI
66 5C CF"336 I PET
1 1337 :
f~ iG si3061)S00~ll 1 03!3 F ' C Ci EF`F:~GG ~JO~tC FTF tF - I-Fl _ EFFOr~ _] I
$156;2 8316'3$0~'~i 10~3 I~BC l:JOFC FT' '~ Fl Er-FC~F~ u S~6~ EBCD1 OS 0 .JIIF flV_FET

$66~ ~?01 os F~_FEI El E: ~IUP
J;SIir~i BB44~0 1 043 t`lOY fi:l II~IJ`I~,H Cl1fi TOF
Sr- t~ e~l ~FF I I~Ss ~ .' C . !FFI_~H
5~ lj EFI 045 OIJT C:: . f~
66~1 B001I Q4S Mr3~.J fiL IlliO13l3nl31F
6673 E6041 01 OIJT ~1 Hl: . ~L
6$. 5 E4041 IIS~ It`~ ~iL . rlCt~'l T ~ rlJ ~~ ~MFCIT
6677 C OCO1 I $3 FOL fiL
S6 -? DOSO~ ~icJq F`I~L fiL
66-B BO.;O1'351 MFI~ L.OIj~10ljlJljE: :E~FOF f`E-FT O M
66~t' E~iO41 05~ OUT fil:H~ L
'567F B040~ l)53 MOr fiL . I Ol~ 0l3E : FESEF cr C CE~-i EF
S-581 E61)41 054 OIJT lll HC . ~L
66a3 80~01055 1-10r fiL . 001 13lilil30B
6sa5 E~iO~I 1351; 'ilJT fil-~C . i~l 668~ S31 05, FET
J 5 s. : - -- -- -- -- -- -- -- _ _ _ _ _ _ _ _ _ I OJ?: -- -------------llotl BPEClFIC EOI-------------------665 ;`; 68 0 OB 0 1 I~S O E't I MO ? 1-1: . . ` O q IlH
6$stB B~22FF ~ liSI MOY C- . 13EF `H
6~ 3E EFI lj~; WT t~: ri::
6;-.2F S3 1 063 i~ET
~ ~ ~ : -- -- -- -- _ _ _ _ . _ _ _ _ _ _ . _ 1 1365 : ~~~~~~~~~~~~ T:~l_t-I8f3rll E ' O'J It~E
1 061; : -- - - r l '1FF 1 I B r' -- - -1 06i OF 6 Or . ;jliH
1 063; QQQQ SL I
~-00 ?S I Of:F? F~JSHF
i . 131 SO I 13r 0 C6 '~ '~
6~ e~l IJOE I ~ 131l S--05 6~51iFF I ')72 MOY C . OFF IIH
6~0;3 EF I0;3 OBT D fi J
~,0~ er~ol~0 10~4 MO~ ri:.. l~lll31~ nl~ llB
S.0C PasEFF 1075 MOy D:i.lJFF~EH
6~0F EF 10,6 OUT D.:.~i:' ~10 6813B00 1077 MOV r;::.1011B
S713 B~3cFF 1078 MOV D::.l)FF32H
~,16 EF 10~9 OVT D.~.ri.' 1080 ~---------------PTR 0~------------------S~l~ B028 1081 MOV r~L~oo1o1ooo8 671'? E6q4 1082 OVT ~SHC. fiL
1083 ~---------------PTF 0~r~------------.

`` ` ` 1 3 3 8 0 I

HEIJLETT-PaCKaRD: ~086 ae~mbl~r SOURCE LINE
671B 8005 1 084 ~oV aL~ooooo1 01B
671D E604 1 08~ UT aCHC.aL
671F ao3E07 1086 ~ov aL~syTE PTR tTE~P_R_CH~
6722 2401 1 oa7 - PYD aL~ 00000001B

672~ DOCO 1089 ROL aL
6727 OCEO 1090 OR aL~111 OOOOOB
6729 E604 1091 OUT acHc~aL

1093 ~ rTR ola 672B BO01 1094 MOV aL,00000001B
672D E604 108~ OUT aCHC,aL
67ZF 802D 1096 ~ov ~L 00101101B
6731 E604 1087 OUT aCHC,RL
1098 ~ PTR cn -----6733 so80 1099 ~OV ~L l OOOOOOOB
673~ E604 1100 nuT acHc~L
------------PTR oa---------------- -1102 ~ ~OV aL 0001 0000B ???????
1103 ~ OUT acHc~aL
1104 ;
6737 B~22FF 110S ~OV B55 OFF22H
- 673~ 880800 1106 ~ov ~x 08 673D EF 1107 OUT DX~ ax 673E B80000 1108 MOV ax,o. :T~ end fl49 6741 ~21807 1109 ~ov ~TX_BUSY_FL~ aL
67~4 ~31407 1110 MOV tECHo_BaCK_FL~G~raX

67~8 9D 11 12 POPF
~749 FB 1113 STI
C~ CF 1114 I RET
1115 ~-----------________________ 1116 ~ - -SET uP UCS- - -----------------7COO B83FF8 1118 ~Ov ~5.OF83FH
7C03 8aaOFF 1119 ~ov DX.0f F~OH
r C06 EF 1120 OUT DX,PX
7C07 E~OOOOOOF8 1 121 DB 0ERH,0,0~0, oFsH JlJMp TO OF~OdO~

7FFd EaoooocoFF 1124 DB OEaH OOOH, OOH, OCOH, OFFH JIJMR TO OFFCI)O~
112~

~129 1130 :
1131 ; -- - _______________ ___________ 1132 ~*#***#**~*** **~*~***********~**************~* *** **
1133 ~#*#**~#~#~ H~ *~**~*#**#***********#*~*****#**~*#*******~
1134 ~##*~***~ * ~***~#**##*#~##***##****~#*****#********~**
~13~ ~ - ------__ _____________________________ ~36 ~

~138 ~
0300 go 113~ HaJlMERuYO~ NOP
0301 ESOOOO 1140 c~ POWER_DET_C~D

-- 258 1 338~44 HEWLETT-P~C~RD: ao86 ~sc~mbl~r SOUPCE LINE
03q4 BE200~ 1141 H~JIMEI: ~OV SI,fPQM_QBF eF
0307 E80000 1 142 C~LL LQ~D_F~OM_GROF
030~ 72F8 1143 JC H~JIMEI
030C BE200% 1144 MOV Sl,FPOM_OBF_eF
030F 8~4401 1145 MOV QL,tSI+I~ -0312 3C01 1146 C~P pL,l 0314 7SEE 1147 JNZ H~JIMEl IF R~spons~ Pow~r l?~t.. Th~n Wait 1148 :
0316 E80000 1149 C~LL PQ~dEP_DET_CMD
0319 BE200a 1150 HONt~Nl: MOV SI,FROM OBF BF
031C E80000 1151 C~LL LO~D_FP~M_GROP
031F 72F8 11S2 JC HONB~N1 03Zl BE2008 ltC3 MOV SI,FPOM_QBF_BF
0324 8~4401 1154 ~OV ~L,tSI+l~
0327 3COl llSS CMP ~L,1 0328 7SEE 11S6 JN7 HQNB~Nl IF Rfsponçe ~> Po~.~or t)ct. Thcn IJai t-1157 :
032B 8~7402 1 1sa MOY DH,C51+2~ DH = Power Detect Data 032E B210 " 59 MOY DL,IQH : DL ~ 1st ID_BYTE --- IQH
0330 DOCE . 1160 DPOP INIT_LP: POP DH
0332 73~3 1161 JNC DPP NEXT : IF CY~O Then Po~.-cr Gown 1162 s 0334 S2 11~3 DEY_INIT_LP: PUSH DX
033S 88162C07 11~4 ~OV CID eYTE~,DL
0339 E80000 1165 C~LL ID D~OP DEVICE
033C E80000 1166 C~LL SPU_ST~TUS_PEQ
033F BE200a 1167 DEV_PESP WT: MOV Sl,FROM_OBF_BF
0342 E80000 116a C~LL LQ~D_FROM DPOP
034S 72F8 1169 JC DEY_PESP_WT
0347 BE2008 1170 MOV Sl,FPOM_OeF BF : SI --- L~ngth 7~ ; ~1 Comm~nd 1172 ; +2 ID_BYTE
" 73 ; +3 8~te Count 1174 , +4 Dat,a 034~ B004 117S hOV ~L,4 034C 3~4401 1176 CMP ~L,tSl+li 034F . EE 1177 JNZ DE~_PESP WT ; IF tSI+1]=4 Th~n 04 Comm,rd 117a ;
03S1 3~4402 1179 MOV ~L tSI+2i 03S4 3~062C07 1180 CMP ~L tID_BYTE~
0358 7SE5 1131 JN~ GEV RESP_WT : IF CMD NEQ St~tus Th~n W,it L~}op 11a2 035~ ~000 118~ ~OV ~L,O
035C 3~4403 11a4 CMP ~L.. tSI+3~
03SF 742D 1185 J7 DEV NEXT ; YLF Error ~Dcvi~-~ Off?
Ila6;
0361 8~4404 1187 ~ûV ~L,~SI~4i 03B4 24F8 1 laa ~ND ~L,OF3H
036~ 7SD7 118~ JNZ DEV_PESP WT , 5t,~t~US ~esponsc den~i llgO ;
0368 ~540S ~-~gl ~OY DL,tSI+~ DL - ~t3tus .~ `
036B E80000 11g2 C~LL CONV_ W BIT ~L ; SI --- ~:OINYSEL ~ Dr~ N
Ilg3 ; ~L --- ~; Devic~
036E 80E280 1134 ~ND DL,~OH
0371 740E ~lg5 J2 DEV SW_O ; IF :7,=0 Then r-onvcr~r ~1.'=0 0373 8~26260- ~lg6 DEY_SW 1: MOV ~H,tDPOP NO~
0377 BOE401 11~7 ~ND ~H,l HE1~LETT-P~CKPRD: 8036 ~cm~ler SOURCE LINE
037~ 509 1t98 JNZ DEV_CLR ; IF ODD Drop Thcn Convertcr SW20 Else ~bnorm~
037C 0804 1199 OR CSI~,~L
037E E90400 1200 JMP DEV_CLR
0381 343F 1201 DEY_SI~l_9: XOR ~L,3FH
0383 2004 1202 ~ND ~SI~,~L
1203 ;
038S E80000 1204 DEV_CLR: C~LL SPU_REL~Y OFF
0388 E80000 1205 Ci~LL SPU_CLE~R_DISP
0388 E80000 1206 C~LL EVENT_LED OFF
1207 ;
038E 5~ 1208 DEV_NEXT: POP DX
038F 80C208 1209 ~DD DL,8 ; 00:# ~DDD
0392 80F~30 1210 CMP DL,30H ; 0011 0bDD
039S 729D 1211 JC DEY_INIT_LP ; IF D~ic~16 Thcn ~cxt bc~ icc . t212 ;
039~ 90E207 1213 bPP_NE~T: ~ND DL,.
039~ FEC2 1214 INC DL ; N~xt Drop --039C 80F~06 1215 CMP DL,6 ; IF Grop>S Then NCYt OFerlt,ion039F 7305 1216 JNC POLLING_SEQ
03P1 80CQ10 121 OR DL,IOH ; Next De~ice Start From ~2 03~4 EB3~ 1218 JMP DROP_INIT_LP

~221 ~222 03a6 E80000 1223 POLLINC_SEQ: C~LL DROP_M~P_SET ;~
1.24 03~9 E80000 122S C~LL DEVICE M~P SET ;~ DROP 0 03~C FE062407 t226 INC 8YTE PTR CCON~_NO~ ;~
0380 E80000 1227 C~LL DEVICE_M~P_SET ;- DROP 1 03B3 FE06240? 1228 INC 8YTE PTR CCONY NQ~ ;-03E7 E80000 1229 C~LL DEYICE_M~P_SET ;~ DROP 2 03B~ FE062407 1230 INC BYTE PTR tCONV NO~ ;~
03BE E80000 1231 C~LL DEYICE_M~P_SET ;~ DROP 3 03CI FE062407 1232 INC BYTE PTR CCONV NO~ ;~
03C5 E80000 1233 C~LL DEVICE M~P SET ;~ DROP 4 03C8 FE06240. 1234 INC BYTE PTR tCON~_NO~ ;=
03CC E80000 1235 C~LL DE~ICE M~P SET ;~ DROP S

~237 ~238 ~239 ~240 ~2~

t245 1247 ~

1249 : ----------- --____________________ ~250 ~ ~l: 1~###~##~ ~*~***~#***~#*~*, 12~ in Routinc ***#*~**:~ #*****~##**#:***:~ *****::~*:*:~**:~:
1252 ;'~
1253 ; --------- ------- ________ _.
12~4 ;

-- 260 1 ;~38044 HEWLETT-P~U~RD: 8086 ~es~nbIer SOURCE LINE
12S5 ;
03CF E82C01 1256 M~}N_LOQP: C~LL FOR~I~PD_SMD_CK ; Cy Fla~ ti~:e 03D2 E91100 12S7 CALL T IMER_QPED.~ T
03D5 7205 1258 JC KEY ~PPLIC~T

1263 :
03D7 E8CD04 1264 DROP_~CCESS: C~LL DROP_RESPONSE : RcspQns~ no kaishaku 03t'~ 7305 126S JNC ECU_~DRS_NEW ; ---> ShQri Nshi l26a 1 26g 1270 :
03DC E80000 1271 KEY_~PPLIC~T: C~LL KEY_OPEP~TION ; ---> K~ shori03DF EBEE 1272 JMP M~IN_LOOP

1277 :
031 E82903 1279 ECIJ_~DRS_NEW: C~LL ECU_~DRS_REPD
034 E8E9 1279 JMP M~IN_LOOP

12~5 1~86 1 2~g :
12~0 : ~*~*~*~ ~u~r~utine ~**:~**:~**********~ '***~**~*'J******-~*~
1291;
03E6 E9FB00 1292 TIMER_I:lPER~T: C~LL TIMER_CHK

1296 :
03ED FF0~fClF 1297 TIMEP_YO: INC WOPD PTR ~TIMEP_COUNTER~
1298 :
12~9 03F1 8B16FClF 1301 TIMER TO82~ MOV DX,tTIMER_COUNTER~
03F5 80F~00 1302 CMP DL,0 03f8 7S68 1303 Jh2 TIMEP TYPE 2 03F~ 80E607 1304 ~ND DH,7 03FD 80FE06 130S CMP DH,6 0400 7360 1306 JNC T~MEP_T'fPE_2 1307 :
04 02 El 0 0 1 1308 rlO~ ~L,l 0404 8~CE 1309 I`lO~/ CL,DH : DH s CON'~/_NO
04 06 D2C0 1310 ROL ~L,CL ; ~L - CONY_NO_t2IT
0408 84068007 1311 TEST ~L,tNOhl_E'rENT~
_ __.,.. .. . . . ... , _ ._ .... .. . . .. i '- 1 338044 HEWLETT-PacK~R~: 8086 asræmbl~r SOURCE L I NE
040C 74S4 1312 JZ TIMER TïPE_ 040E B700 1313 MOV sH~o 0410 saDE 1314 MOV sL~DH
P ~Y Ch ~nn~ #
0412 BE3000 1316 MOV SI,EYENT_CH~NNEL
041S 03F3 1317 ~DD SI,BX
0417 8alc 1318 MOV 8L,tSIJ ; 8L 5 EYENT Yi~w Ch3nn~1 041, 8E0006 1319 MOV SI,ES_EVENT_TIMER , Co~nt~r IJp ~ P3041C 8aE6 1320 MOV aHJDH
041E 8000 1321 MOV aL,O
0420 D1 C8 1322 ROR ax 0422 03F0 1323 aDD S I, ~X
04~4 268a20 1324 nov aHJEs:cs I ~ C8X]
0427 soFcFs 132S CMP aH,oFsH
042a 7336 1326 JNC TIMER TYPE_2 042C 26800008 1327 aDO 8YTE PTR ES:tSI~t6X~ 3 0430 26so3sFs 1328 CMP 6YTE PTR ES:tSI~tBx~,oFsH
0434 722C 1329 JC TIMER_T-tFE_2 0436 800E8007Cp 1331 OR 8rTE PTR cNo4-EyENT~ocaH
0438 80CE10 1332 OR DH,1OH
043E 88362807 1333 MOV tIC_8tTE~,DH
0~42 E80000 1334 caLL CONY_TO_DROP
0445 E80000 ~335 C~LL ID_QROP_DEVICE
1336 :
0448 aO2Eo7 1337 nov aLJtcoNv-No BIT~
04~B 343F 1338 XOR aL~3FH
044C 20068107 1339 ~D 8YTE PTR tEEFoR-EvENT~aL
_ _ 1340 ~
0~51 BE3000 - 1341 , MOV SI,EVENT_CH~NNEL
: 0*54 03362407 1342 aDD SI,tCONY N03 04S8 8a~c 1343 nov 8L,tS I~
04sa B700 1344 MOV BH,O
04~C E80000 1345 caLL 81NQEC_LED
04SF E80000 1346 caLL RUN_CONVERTER
1347 ;
0462 881EFC1F 1348 TIMER_TYPE_2: MOV 8X,tTIMER_COUNTER~
0466 81E3FFOF 1349 ~ND 8X,OFFFH

046a 81FB0004 13SI CMP BX,ES_B~CK_UP_2 ~ 1024 04~E 734C 1 3S2 JNC T I MER T08 0470 81F80002 1353 CMP 8X,ES_8QCK_UP_1 ; 512 0474 721B 1354 JC MOV_1_ST
13~ ;
0476 268ao7 1356 MOY_2_ND: MOV aLJEs:t8x+Es 8acK-lJp3 BX = 512 - 1 023 0479 2688870002 1357 MOV ES:t8X+ES_8~CK_lJP_l~,~L
047E 753C 1358 JNZ TIMER_TOB
0480 26C7060002 13S9 MOV 40RD PTR ES:CES s~cK /Jp-l~o~5asH
0~87 26C7060004 1360 MOV 40Rtt PTR ES: CES B~CK_UP_2~,0 048E E92800 1361 JMP TIMER-Tos 1362 , 0491 83FB04 1363 MOY_1_ST: CMP 8X,4 0494 7214 1364 JC MOV_i_INlT
0496 sao7 1365 MOV ~L,tBX~
0498 2S88870002 1366 MOV ES:tBX+ES_B~CK IJP 1 ], aL
04~D 2630060~02 1367 XOR Es:tEs-6~cK-lJp-1+2~JaL
04~2 ~600060302 1368 ~DC) ES:tES_~K IJF 1+3~

~ HEWLETT-P~CKRRD: 8086 Rssembl~r : SOUPCE LI~E
04~7 E91200 1369JMP T}MER_TO8 1370 ~
04~ 26C6870002 1371 MOY~ IT: MOY 8YTE PTR ES:~BX~ES BRCK_UP_13.0 0480 ~3F8no 1372 C~P 8X,0 0483 7~07 1373 JNZ TIMER_TO8 0485 26C7060004 1374 MOV ~ORD PTR ES:~ES 8RCK UP 2~,l3RSRSH
~37~ ;
048C 81E33F00 1376 TIMER_TOB: RND 8X,3FH , 00** ~***
04C0 881E2807 1377 MO~ tlC_BYTE3,8L
04C4 02D8 1 78 RDD 8L,8L
04C6 8E0003 1379 MOV Sl,TIME_TR8LE
04C9 8800 1380 MO~ RX,CSI~tBX~
04Ç8 3DFFFF 1381 C~P ~X,OFFFFH
04CE 7412 1382 JZ TIMER SLEEP : Tin~r W~ Tuk3~ n.~i 04D0 FF08 1~83 DEC WORD PTR tSI~C8X~
0402 7SOE 1384 JNZ TI~ER_SLEEP ; -'--- M3d~d~
1385 ;
04D4 8100 1386 MOV CL,TIMER_OUT_CODE ; <--- Jikan d~cuX--04D6 880E8907 1387 ~OV tKEY D~T~CL
04D~ E80000 . 1388 CALL tC_DRûP_DEVICE
04DD E80000 1389 CRLL CON~_TO_DROP
139~ :
04EO F9 1391 TIMER RCTIVE: STC
04E1 C3 ~392 RET
1393 :

04E2 F8 1396 TIMER_~LEEP: CLC
O~E3 C3 1397 RET

1399 ;
1400 ; #**~****~*** Tin~r Cqunt~r Ch~ck ***~**~ ****~************
1401 ;
1402 ;=====~ SU8ROUTI~E FûR COUNT SEC=============
04E4 BR66FF 1403 TIMER_CHK: MOV DX,OFF66H
04E7 ED 1404 IN RX,DX
04E8 R92000 1405 TEST RX,0020H

04EE B80008 1408 MOV RX,0800H
04F1 8R62FF 1409 MOV DX,OFF62H
04F4 EF 1410 OUT DX.RX
04F5 8801C0 1411 MOV RX,1100000dl30l3l30l301S
04F8 8R66FF 1412 MOV DX,0FF66H
04fB EF 1413 OUT DX,RX

04FD C3 1415 RETTIM2: RET

1~21 . _ . . , . _ _ . .. . . . . .

~ 263 1 338044 HE~LETT-P~CK~Rti: 8086 QssembI~r SOURCE LII~E

~428 1 42g 143~ :
1440 ---- -------________________________________ 1441 r*#* *###*#
1442 :##**#~*###~#~ HDLC For-~rd Comm3nd ~***********************~***~-~*~*~
1443 #~### **##~*********#****~***********~.*~
1444 --- -----__----__-_______________ - _________ 1445 :
04FE 8B361407 1446 FORWQRQ~ D_CK: MO~ SIJCEI:HO B~CK_FLQG]
0502 83FE00 1447 cnP 51~ O
050S 7503 1448 -JN2 FORWQRD_COME
0S07 E90102 ~449 JMP TX CCC N RET
14S0 SI=Dst.3 Eut`t~r ~ddr~-050Q C706140700 14S1 FORWQRD_1:0ME: MOY WORD PTR tECHO_E~C~_FLQG~9 +0 --- ECU H ~d~r~_=
0510 8Q4403 1452 MOV QL,CSI+33 ; +1 L
0513 3C80 1453 cnP AL~80H , +2 R~ D3t3 L~mgth OSt5 ?333 1454 J~C FORWQRD_CMDTBL ; +3 Commln~
0St.7.3C20 1455 CMP QL,20H
05t9 7303 1456 JNC CCC CMD ~0 7F
051B E98501 14S7 JMP CCC_DROP_CMD ~ 00 - 1F Comm~rd 051E 740a 14S9 CCC_CMD_~0_7F: J2 FORCED_KEY ; 20 - F Comm3nd 0520 3C30 1460 CMP QL,30H

0S24 E9E401 1462 JnP TX_CCC_~_RET
1463 ;
0527 E9D6F~ 1464 C3LCi_StQRT: JMP RUN ; *~*#*~ Cold St.3r* ****** 1465 052Q 8Q4404 1466 FORCED KEY: MOV QL,CSI+4~
OS2D Q~:807 1467 MO~ tIC_BYTE~.. QL
0530 8Q6405 1468 MO~ ~H,tSI+S~
0S33 88268907 1469 MOV tKEY DQTQ~,QH
0537 E80000 1470 CQLL IC_DROP_DE~ICE
0S3~ E80000 1471 CQLL CONr_TO_DROP

0S42 5B 1476 FORW~RD JUnP: POP BX
0543 03D8 1477 ~DD BX,~X
0545 8Q4403 1478 ~O~ QLJCS~ 3 0S48 ~3 1479 PUSH 8X

1481 :
OS~Q 2C80 1482 FOFW~RD_CMDT8L: SUB QL,80H

HEWLETT-P~CKaRD: 8086 ~ss~nbler ;OUBCE E I NE
OS4C 2SFC00 1483 aND RX, OFCH
OS4F E8FOFF 1484 C~LL FORW~RD_JUMP
148S :
0552 E97C00 1486 CtC_IMD .JMPTBE: JMP SENC_FUNC_M0D ~OH - - -05ss 90 1487 NOP
oss6 Ess6oo 14~8JMP SEND_RESPONSE : 84H ---ossa E90000 1490JMP P~Y_GROUP 1 ; 8sH ---05SD 9o 1491 NOP
OSSE Esoooo 1 4g2JMP P~_CP.oUP_~ 8CH ---0561 9o 1493 NOP
056~ E9a6o1 1194JMP TX_CCC_N_RET OH ---056S 90 14sS NOP
0S66 E~a201 1496JMP TX_CCC_N_RET s4H ---056~ E99E01 1498JMP TX CCC N RET s8H ---OS6E E9sao1 IS00Jrp TX CCC N RET scH ---0S72 E99601 1502JMP TX_CCC N RET ~OH --- tIno~
057S 90 lS03 NOF
0576 E99201 1504JMP TX CCC N RET ~4H --- tIn oS7~ E98E01 1506JMP TX_CCC_N_RET : ~8H --- CIno~

057E E98P01 1508JMP TX_CCC_~I_RET : ~CH --- tIno~

0582 E98601 1510JMP TX_CCC_N_RET BOH --- tIno~
0~S8S 90 1 S1 1 ~loP
0S86 E98201 IS12JMP T.Y_CCC_N_RET : B4H --- tIno~
0~89 90 1S13 NOP
0S8~ E97E01 lS14JMP TX CCC N RET : B8H --- tIn-~3 058D 90 lS1S NOP
058E E97q01 1S16JMP TX CCC_N_RET BCH --- tIno~

0S92 Es76o1 1518JMP TX CCC N RET ~ C0H --- tB~n~

0596 E97201 1S20JMP TX_CCC_N_RET : C4H --- tB~n~
osss 90 lS2t NOP
dSga E96E01 lS22JMP TX CCC N RET C8H --- t8~n~
05sD 90 1523 NOP
OS9E E96~01 1524JMP TX CCC N RET ; CCH --- tB~n~
05a1 90 lS2S NOP ~ ~ ~ . .
0sa2 E96601 1 S26JMP TX CCC_N_RET : DOH ---o~aS 90 lS2~ NOP
osa6 E96201 15~8JMP TX CCC N PET : D4H ---osag 90 1S29 NOP
05a~ E95E01 1 S30JMP TX_CCC N_RET B8H ---0S~D 90 1531 NOP
osaE E95ao1 lS32JMP TX CCC N RET : t~CH ---0581 go IS33 NOP
0582 E9S601 1534JMP TX CCC N_RET : EOH ---os8s 80 lS3S NOP
0586 E95201- lS36JMP TX CCC N_~ET : E~H ---o5Bs 90 1537 NOP
osBa E94E01 1538JMP TX_CCC_N_RET EaH ---0SBD 90 lS3~ NOP

. .

1 338~4 HEWLETT-PaCKQRD 8Q86 ~ scmbler SOURCE LINE
05BE E94~01 1540 JMP JX CCC N_RET : ECH ---05C1 90 154t NOP
0SC2 E9S500 1542 J~P ECHO B~CK_CMD ; FOH ---05C5 g0 , 1543 NOP
0SC6 E9E300 IS44 JMP FORCED TUNE ; F4H ---05ca E95q00 1S46 JMP DISPLaf MEMQR~ ; FBH ---05CE E99300 1548 JMP STOPE_MEMOPY ; FCH ---1549 ;
1550 ; ~****~***~*~*~ S~nd Function Respons~ *~*~*~******~*************~*
~5Sl ;
05D1 2403 t552 SEND_FU~C_MOD QND QL,3 ; 80 - 33 Comm nd OSD5 3C01 1554 CMP ~L,l OSD7 ?40D 155S J~ S_F_M CLR
OSD9 E92F01 lS5~ JMP TX_CCC_N_RET ; 52 - 83 Commcrd ~557 ;
OSDC 8Q64Q4 1558 S_F_M_S-ET MOV QH,tSI~4~ ; 80 Comm~nd 05DF 88263008 1SS9 MOV ~SENG ENaBLEJ,QH
05E3 E92501 1560 JMP TX_CCC_N_RET
156t :
0SE6 B400 lS62 S_F_?t_CLR MOV ~H,0 J 31 Command OSEB 88263308 tS63 MOV CSEND INDEX~,~H
OSEC E91C01 lS64 JhP TX_CCC_N_RET
~565 :
05EF 8~263308 1566 SEND RESPQNSE MO~ QH,CSEND_INDEX~ ; ~4 - 8 Comm~nd OSF3 80FC00 1567 CMP QH,0 05F6 741F tS68 JZ ~O_SEND
05F8 8~6403 1569 YES SEND MQV PH,tSI13~
05FB 88263408 1570 MOY CSEND CMD RESP~,QH
05FF 2403 1571 ~ND aL,3 0601 ~21607 1572 MOY tREYERS CH~NEL~,~L
0604 FE063308 1573 INC 8YTE PTR tSEND lNDEX~
0608 FE063308 lS74 INC BYTE PTR CSEND INDEXJ
060C 8E3108 1575 MO~ SI,SEND_aDDRESS
060F Q10014 lS76 MOY QX,tECU_QDDRES~J
0612 8904 157, - MOY CSI~,QX
0614 E9D600 ~578 JMP TX_CCC_RUN
0617 E9F100 15a0 NO_SEND JMP TX_CCC_N RET
15at ;
1582 : *****~ *~* Echo 8~ck Comm3nd ************~*~****************

061~ 2403 - 15~s4 ECHQ_BQCK_CMD QND ~L,3 ; Comm~nd ~= OFOH
061C Q21607 158S MOY tREYERS_CH~NEL~,QL , P~ rs~ Ch3nn~1 CQmm~nd 061F ~100J4 1596 ECHO BaCK_SURU MOV QX,CECU_~DDRESS~
0622 8904 ~sa7 MOY tSI~,QX
0624 EgC600 t538 JMP TX_CCC_RUN
~S89 ~
1590 : **~**~*#JI~*~-*# Display M mor~J **#**** * * ****'**:~'# * ******* **:-'**** *:*
~S91 0627 8B5C05 1592 DISPLaY_MEMORr MOY 8X,CSIIS~ ~ ~ DlSP1aY M_morJ ~,~
062~ Qa4403 ~593rtOY aL, C S I ~ ~
062D ~20314 1594~tOV tTX COMMaND],QL
0630 8~4404 1595MOV ~L,CSII4~ SI --- ECU ~ddr~ss H
0633 BE0414 1596MOY SI,TX_BUFFER ~ 11 ECU Qddr~ss L

_ .. _ . . . . , . . . . _ . _ . . . . . , . . ~ . .. _ .: _ . . _ _ . . . . . . .

~- 266 1 338044 HEI~LETT-PRC~RRG: ~t086 Rs ~mbl~r SOUPCE LINE
0636 ~20214 1597MOV tTX LENCTH],~L ; ~2 Rx L~ngth 0639 81f8008Q '598CMP BX, 000H , ~3 Command 063D 7310 IS99JNC DISP MEM 551.
063F 8~27 1600 TX TRNS2: MOV ~H, tex3 ; ~4 T~ Leng+,h 0641 8P24 1601MOV tSI~,RH 1~ TY~ ~ddr-ss L
0643 46 loO2 INC SI ; ~6 T:~ Rdcdrcs H

0645 FEC3 1604 DEC ~L
0647 7SF6 160SJNZ TX_TRNS2 0649 BE0014 1606MOV SI,ECU_~DDP~ESS
064C E99E00 1607JMP TX_CCC_RUN
160~ J
064F 87E3FF7F t609 DISP_MEM_5517: ~ND 8X"FFFH B3ck Up Mcmor~" [!isplb,J
06S3 268a27 1610 TX_TRNS3: MOV ~H,E5:~8X~
06S6 8824 1611 rtoY CSI~,RH
06S8 46 t612 INC SI

065~ FEC8 1614 DEC ~L
065C 75F5 161S JNZ TX_TRNS3 065E BE0014 . 1616 MOV SI,ECU_~DDRESS
0661 E98900 1617 JMP TX_CCC_RUN
1618 : -.0664 8B5COS 1619 STQRE MEMORY: MOV 8X,tSI~S~ ; <C< Stor~ Memor~J SSS
066~ 8~4403 1620 rtov ~L,tSI~3~
066~ ~20314 1621 MOV tTX COYM~ND~,aL
066D Y~4404 1622 MOV ~L,tSI14~ ; SI --- ECU Rddre~s H
1623 , ~1 ECU ~ddrecs L
0670 ~20214 1624MOY tTX LENGTH~,~L ; 12 R~ L~ngth 06?3 81FB0080 1625CMP px~8nooH J +3 Command 0677 730E 1626JNC STOR_MEM_5517 0679 8~6407 1627 ST_TRNS : MOV ~H,CSII.~ 4 St Length 067C 88a7 1628MOV tBX~,~H t ~5 St RddrcLs~ L
067E 46 1629 INC SI ; ~6 St Rddr~cs H

0680 FEC8 1631 DEC ~L
0682 7SF5 1632JN2 ST_TRNS2 0684 E98400 1633JMP TX CCC_N_RET
~634 ;
0687 alE3FF~F 16.~5 STClR MEM SS17: RND BX.7FFFH : 8ack Up Memory Displ~y 068B 81FB0001 1636 CMP BX,100H
068F ?303 1637 JNC ST_TRNS3 0691 E97700 1O3aJMP TX_CCC_N_RET ; So~o~ InterruDt T~t.le 0694 8~o407 t639 ST TRNS3: MOY ~H,tSI~2~
0697 26882, 1640MOV ES:~B,Y~,RH
069~ 46 1641 INC SI
069B 43 lr42 INC BX

06~0 E96800 164SJMP TX CCC_N_RET
~646 ;
'o47 ; **~***~*** CCC ---~ Data Processor ---~ Drop Procccsor *~*
1648 ;
06~3 83C602 1649 CCC_DROP_CMD: RDD SI,2 06~6 E80000 1650C~LL LORD TQ DROP
06~9 E~SF00 1651JMP TX CCC N_RET
1652 ;
'653 ; *~*******~** Forced Tuning --- Nth Con~ert~r ~*************

HE~LETT-P~CK~RD: 8086 Qer~bl r SOURCE LINE
~ 16S4 :
06RC 8a4404 16S5 FORCED TUNE: MOV ~L,tSI141 ; SI --- ECU H ~ddres~
06~F ~22807 1656~OY tIC_8rTE~,~L ; 1 L ~ddr~
0682-E80000 1~57C~LL IC_DROP GEVICE : l2 Tx Pata Lcndt~, 06B5 E80000 16S8C~LL CONY TO DROP ; +3 Command EOH
0688 8~C05 1659 MOY 8L,tSI~ 4 C~n~crtcr NQ.
06Be 80F864 1660 CMP BL,100 ; t5 Tuninq Channel 068E 7312 1661 JNC FORCEG_OFF
1~6Z :
06CO E80000 1663 FQRCEG ON:C~LL BINDEC LED
06C3 E80000 1664C~LL LED VIEW_TBL
06C6 EaO000 166SC~LL SPU LED DISP
06C9 E80000 1666C~LL RUN CONVERTER
06CC E80000 1667C~LL W~KE~PI_DE_ON
06CF Eg3900 1668JMP TX CCC N_RET
1669 ;
06D2 E80000 1670 FOPCED_OFF: C~LL OP_SPU_OFF

1672 ;
1673 ; ~***~*~*-- SPU to CCC Scnd ~ *~**~*~-~********~~~
. 1674 :
06D8 BE0214 1675 SFECI~L_SPU_1: MO~ SI,TX_LENGTH
06Dtt 8ttO207 1676MOY BX,INDEX_RX_1 06DE C60441 1677~OY 8rTE PTR CSI~,65 06E1 C6440100 1678MO~ 8YTE PTR t~I~1i,0 06E5 83C602 167g PDD S~,2 06E8 ttO40 16a0 MOY ~L,64 06E~ E952FF 1681JMP TX_TRNS2 1682 ;
1683 ; ~ Scnd to CCC ~#~n~ #~
. ~ - 16a4 :
06ED ~0~807 1685 TX_CCC_RUN: MOY ~L,tTX_BUSY_FL~G~
06F0 3C00 1686 CMP ~L,0 06F2 7517 1637 JN~ TX_CCC_N_RET
1688 ;
06f4 9a4c02 1689 TX_FUN_SUe: MOY CL,tSI~2 06F7 FEC1 16g0 INC CL

06FB 80F903 1692 CMP CL,3 06FE 7302 1693 JNC TX_YOSHI
0700 8103 1694 MOY CL,3 0702 980E1807 16g5 TX YOSHI: MOY tTX_tiUS`~_FL~G],CL ; ttt Sl --- Start. ~ddrc~s ]]i 0706 E841FB 16g6 C~LL HDLC_TX_ST~RT ; ttt ÇL --- Gata Lcngth iil 070~ C3 1698 RET
16~9 :
1700 :
1701 :
070tt F8 1702 TX_CCC_N_RET: CLC

1704 ;
1705 :
1706 ;

. _ ~ , . . . . . . . _ , .

268 1 33~0~4 HEWLETT-P~CK~D: 8086 ass~blf~r SOURCE Ll4E

~714 1'15 - 1'16 ;
t 717 : -----__--__-----------___________________.
17 1 8 ;~**~
1719 ********~*#* Subroutine **~**#*~**'~****~ '*:~*****:~*:~*:~***~
1720 ;*~-~*~ ******-.~**.~*~*~**~***~**~* f.~ k~*~*~
~721 : - --- -----___-____________________.
1.~22 1723 ; *****~***~*~ ECU ~ddress Read Routin~ ******~******~*****~**
1.724 07OD Ba0001 1725 Ecu_aDRs_REat): MOY DX, ECU_L_aDtiREss 0710 EC 1726 . IN aL,t~X
0711 8RE0 1.27 MOV ~H~aL
0713 Bao2ol 1-28 MOV DX, ECU H ~Dt3RE55 0716 EC 1.29 IN aL DX ; aH ~ L ~L s H ~ddre -0717 a300~4 1730 ~O~ tECu_at)t~RE~s~a~
071a C3 1731 RET
~732 1733 ; ************ Tin~r T~ble Initializ~ **~*******~***#****~******
~7~4 071B BE0003 1735 I NIT_TIM_TBL: YOY S I,TI ME_T~BLE
071E BB0000 1.736 MOV BX o 0721 C600FF 1737 INIT TI~ LP: rov BYTE PTR tSI~teX~,0FFH
0724 43 173a INC BX
07Z5 alFB8ooo 1~3g CMP Bx~l2a 0729 75F6 1.~40 JNZ I N I T_T I M_LP

42 :
1743 ; ~**~*****~** Ev~nt Ti~er Table Initialize ******~*********~*-~

072C BE0006 1- 4 5 I N I T_E Y_TI ~ER: ~OV S I, ES_EYEN T_TI MER072F BB0000 1746 rov BX 0 0732 26C60000 1747 INIT EY 1: MOV BYTE PTR ES:tSI~tBX~ 0 0736 43 174a INC BX
0737 alFBooo3 If49 C~P BX 128*6 073B 7SF5 17S0 JNZ INIT_EY_1 ~752 ;
1753 : **~ * JuMp-at)DREss T3blc Initiali-e ***:~*:~ ***:k*:~:~:-~
~754 :
073E E80300 175S ItIT_JIJ~P_TBL: caLL INIT wa DOK0 0741 E90000 1-56 JMP OP_INITI~L
0744 58 1757 INIT ~ DOKO: PoP ax 0745 a31co7 1758 MOV tINIT POINT~,aX
0748 BE9003 1759 MOV SI~JuMp-fADtJREss 074B BB0000 1760 MOY BX,O
074E 9900 1761 INIT_ ~IJ~P_LP MOV CS I]t BX~ AX
0750 93C302 17$2 aDD BX 2 0753 81FB8000 1763 CMP Bx~12a 07S7 75F5 t764 0N2 INIT_JUMP_LP
07S9 E90300 176S C~LL BasE WfA DO~0 07SC E90000 1766 JMP BasE-pQuT I NE
075F S9 1.767 B~SE_W~ DOKO: PoP ax ~_, 269 1 338044 - HEWLETT-FRCK~RD ! 8l)86 Rc~ ~bl~r~
: SOURCE LINE
0760 R31R07 176~ ~OV CBRSE_FOINT~RX

t7?0 ;
1771 ; ~*******~*~ E~SIC_RUTH0 T3bl~ IritiaIi_~ *****~**~*~*~***

0,64 BE0001 1773 I~IT RUTHO_T8L: ~OV 5I.PC FC LIST
0?6. BB0q.00 1774 MOV BX,0 076R C60000 177~ JUNKO: ~OV B~TE PTR ~SI~CEX~.0 076E 81FB0001 177, C~P EX,2S6 0,7 7SF6 1778 JNZ JUNKO
17,g ;
07?4 BE8001 1,80 MOV SI.BRSI1` RIJTHO
0777 BBn1oo 1781 ~OV BX,1 07~a C6003F 1782 JUN: MOV BYTE FTR ~SI~CBX~,3FH

077E 83FBSR 1784 C~P BX,80 1787 :
1788 ; ******~***** Vi~ Chann~l Table Initi31i-e **************~***
1789 ;
0784 8E1000 1790 INIT_VIEW_TBL: MOV SI J VIEW_CHRNNEL
078? BB0000 i71 ~OV BX,0 ; 54.53~5c.S1 SO!C2'Cl.'l U
078a 8aE3 1792 INIT_~IEW_LP: ~OV RH,BL
078C FEC4 1793 INC ~H
078E 80CC30 1794 OR ~H.30H
0791 C60030 1795 ~0V B~TE PTR CSr~CEX~.30H
0794 886008 1796 ~oV BtTE PTR tSr~CEX~8~,RH
0797 43 179? INC BX
0798 83FB08 ~798 CMP BX,8 079B 7SED 1799 JNZ INIT_VIEW LP

1801 ;
1802 ; ~*~********~ EVENT Tabl4 MOGE Initialize **~****~*~**t*~:***
~803 ;
079E BB0006 1804 EYENT_D~T8_CL: MQV BX,ES_E~JENT_TIMER
07a1 26C?07FFOF 180S CHIHRRU: MOV WORD FTR ES:CBX~0FFFH
07R6 83C302 1806 RDD BX,~
07~9 81FB0009 1807 CMP BX,ES_EVENT_TIMER11c8*6 07aD 72F2 1808 JC CHIH~RU
1809 ;
07aF BE0009 1810 ~OV SI,EVENT NO FREQ
07B2 B120 1811 ~OV CL,32 07B4 C744400100 1812 LP1: MOV WqRD FTR CSI~32 0789 83C602 1813 RDD SI,2 07BE 80F93F 181S CMF CL,63 1817 ;
07C3 BE0009 1818 ~OV SI,EVENT_NO_FREQ
07C6 BB0002 l819 MnV BX~CH_N0_FREQ
07C9 B140 1820 MOV CL,64 07CB 8807 t821 LF2- ~0V RX,CBX~
07CD 89848000 1822 MOV CSI~64~2~.RX
07D1 83C602 1823 aDD SI.2 07D4 83C302 1824 RDD 8X,2 .. .. . . .... . . r.

HE~LETT-PaU:aRD: ao86 ~sscmbl~r SOURCE LINE

07Ds 8of9so 18Z6 cnP CL.128 07DC 7~ED 18 7 JNZ LP2 ~3~8 ~
07DE C3 1a2q RET
1830 ;
1g7~ ****~**~* FC_COGE ~ FR_CODE Initi31i2- ~**~********~*~****
1832 :
07DF BE2000 1833 INIT CODE: nov Sl,PC CODE
47E2 BBo000 1834 ~Ov BX,0 07ES C7000000 1s3s ~NIT_CODE_LP: nov wORD FTR rsl~tBx~o 07Es B3C302 1836 aDD BX, 2 07EC 83FB10 1837 cnP 8X,16 07EF 7SF4 1838 JNZ INIT CODE_LP

40 ;
184t ~ *~*~*~*~ Convert~r Fr~qlJ~ncy C~lc~ t,ion ~**~**~***
~842 ;
07F2 c7063ao703 1843 fRE~_C~L~ oy IJORD PTR DS t~UL_~DR~nUL_NO
07Fs B90000 1844 nov Cx,0 ;~-CRBLE
07F8 B84000 184S - MOV ~XJ64 07FE 48 1846 caL STDb: DEC ~X
07FF E81SOO 1847 C~LL FREa-c~L
0802 3D0000 1848 CMP ax.o 0805 7SF7 1849 JNZ CaL_CTD~
0807 B9FF00 18SO nov CX,OFFH :8-c~sLE
080~ B84000 18S1 ~Ov ~x,64 08~D ~8 18S2 C~L_STDB: DEC ax ---080E E80600 1853 C~LL FREQ caL
0811 3D0000 18~4 cnP ~x,o 7SF7 18SS JNZ C~L_STDB
0816 C3, 18S6 RET
lss7 ; ~ r 1' ' ' ~ - -STD FREq. C~L ICUL~TION SUBROIJTlNE=---~---0817 80El?0 1858 FREQ_C~L: aND cLJooloool3oe 08la S0 18S9 PUSH ~X
081B 8BDo 1860 nov DX,8X
081D 7S4E 1861 JN2 UP64 :B-C~BLE ~ UP64 oslF 3D0000 1862 UP64_D cnP ~x,o 0822 743~ 1863 JE 2ERO
08~4 3D3F00 1864 cnP ax,63 0827 743S ls6s JE ZERq 082 3D0600 18~6 cnF ~J6 082C 7335 186, JNC CH6_62 ;CH~NNELL ~RE FROM 6 TO ~' 082E 3D0400 1868 CMF ~,4 0831 733S 1869 JNC cH4-s ;CH~NNELL ~RE FROM I TO 5 0833 BB4B01 1870 ~OV 8X.331 0836 F6263~07 1871 11ULTI~ 11UL B'tTE PTR DS:tMUL ~DR~ :CH N0~3 os3a 03C3 1872 aDD ~X.BX :CH_NO~3+0FF;E
os3c ~OF900 1873 aDDER: cnP CL,0 083F 7400 1874 JZ ~DDER_1 ls7s ;~ DD DX.64 ;64 OR 63 2?????
OB41 B0E403 1876 aDDER_1: aND ~H,00000011B

084S D0C4 1878 ROL ~H
0847 DOC4 1a79 ROL ~H
0849 DOC4 1880 ROL ~H
oe4B DOC4 1881 ROL ~H
.. . .

~, ~ - 271 ~ 338044 Fl ~ l c~T-~alxlDsT uEucETT-pacKaRDl 8086 a~b LOCFttotl O--~CT CODC LINF 50U8CE Cll C
-4D DOC4 1882 oOL au 0--4F DOC4 1 ul~3 QOL ~u n~l OaEI 1--4 OR QU,CL
08~3 8t~0002 1885 nov sx Cu_uo FREQ
0--,6 -F2 lux~ nov 51 DX
o-5- 3FZ 18X7 ~OD ~I DX
o-~a -Ot In8s ~ov CBX~tS11 GX STORE u ~ ~s O-~C ~- In~s POP GX
o--sD e_ lo-o RET
lU'~I:
085E -0000 IP~2 2ERO: ~OV AX, O
0-~1 E-D9 1~3 Jnp aDDEr 1~-4 ~-_____ 0~ 701 18-~ Cu6 6.: ~OV sx 343 ~-6~ E-CE 1886 Jnp nucTl O - - 4D01 1--0 cu4_~ YOV BX,333 OV68 E8C9 1~9 J~r nucT
aoo I
O - 6D 83C240 1~01 UP64 aDD DX,84 64,~83 Vt~ich^~?
0 - ?0 E-aD 1~02 J~P UP84_D
~9n4 ~ J-o~n ~h-nn~l ~go~;
o~n OE0002 1906 CuGNNEL - 805EI: nov sl~cu-uo-FcEe - 7~ 8951-0 180? nov Cx 4qslu J-p-n o-?q 89-csEoo 1-08 nqv tSC~ 1~21.CX
~-q osrc ~ 40 nlo nov cX,4n~ : J-p-~ 3 ~ rr ~ C92 n t ~ nov ~SI~ 2~.CX
0 - - 3 9-840 1-l ~ov CX.4088u Jap-n 4 0-~ ~ssC~40~ ov tS1~74~2~,CX
I ~15 o-~a ~se40 ~91~ nov cx~4vsEu J.p-n 6 o----D s~--c9qoo 191?nqv CS1~;'6~.1,Cx o-~ 3-0 ~t~ noV CX,40~U ~-p.n 8 n 94 ~sqc~coq ~-~0 nov cs~,e-.~,cx 0898 B99940 1~~'` NOV CX14099U J-p-n IQ
n~ 8~0Caooo ~_ nov csl~ôn21~cx Iq: ~
8 ff 99F40 1~P5 ~ov eX 409FUJ~P n 12 n ~2 ~-ca4 n n-~ nov C S I -82-2 ~, CX
o-a~ C3 1-: ~ RET
I : t 1 ;, ,~- I D~op P~oc~or R~pon~ no ~hirib~elJ ~
V~? ~2008 ~ DQOP_RESPOuSE YOV sllFRqn-oBF BF
0-~ oooo 1-,1 CaCE LOaD_FRq~ DPqP D, n Proc~or ~ no qBF D~ n ~0 FRon_OsF_sF n utu.u o aD ~15 19- JC DROP RESP NOP
O~F Q 008 1-3- nov sl~FRon q-F BF
~8~2 ~4401 ~ nqv a~,csl~ Q~ ~ ~ CQ~nd 08-~ 3COI ~3b CnP ac,~
08-7 -40D 183. JZ DPOP RESP o o--~ 3C04 1~ C~G a~,4 , ' ~ ~338044 HEWLETT-P~CK~RD: 8086 ~s~enbler SOURCE LI ~E
098B 7408 1939 JZ DROP_RESP_04 08BD 3Cq4 1940 C~P ~L,84H
o8eF 7503 1341 JNZ DRQP_RESP_NQP
0~CI E99F00 1942 JMP DRQP_RESP 84 1943 ;
08C4 Fs 1944 DROP RESP_NOP: CLC ; Kcu r3ti None ~ CY=o 08cs C3 1945 RET
:
1~47 ; ==.,.2...~=-~-=~5==-2=============== ~Sl~ +1]=~==t+2~==========
08C6 EBFC 1948 DROP RESP_01: JMP DROP_RESP_NOP ; ~01 ~tPQW .DETECT~
1949 ; ~===~---~=-=5~-~ SI~==t+1~ +2~ +J~t+4~ +~]==
osca 8~4402 1950 DROP RESP_Q4: ~ov ~L~, ~SI+2~
08CB ~22C07 1951 ~OY tID BYTE~.~L
03CE Eaoooo 1952 C~LL ID_GRQP_GEYICE
19S3 :
08D1 BE200a 1gS4 ~ ~OV Sl, FPQ~_QSF_8F
08D4 3~4C03 19S5 ~O CL,~S I+~ 04~}D BITE~u2~00~ST~TlJS]
osD7 80F9oo 1g56 C~P CL,0 ; oo o8Da 7466 1957 JZ RESP_vLF_ERR
03DC BF8000 1 9S9 ~ov DI,/LF_ERRQR_~P
08DF B700 1959 ~oY BH,0 08E1 9~1E2C07 1960 ~OV BL,C I D_BYTE~
08E5 03D8 1g61 ~DD BX, Bx osE7 8121FEFF 1962 ~rD WORD PTR tDI~SX~, OFFFEH
1963 ;
09EB 8~6C04 1964 ~ov CH,tSI~4~ ; . 02 00 08E 80FD00 1965 C~P CH,O
08F1 7402 1966 J7 RESP_ST~TUS
08F3 EBCF 1967 J~P DROP PESP NOP
1968 ;
08F5 8P5405 1g69 RESP_STbTUS: ~OY DL,tSI+5~ ; t Statu5 08F8 80E204 1970 ~ND DL,4 ; S ~ P

08FD 8~S405 1972 RECENT_ON: ~Ov DL, tSI+S~
0900 E80000 1973 C~LL CONV_SW_BIT_~L ; ^ SPU R~ccr,t Power ON
0903 80E280 1974 ~ND DL,80H
0906 7411 lg7s J, CONY_SW_O : Conv~rter Select SW
osn3 8~262607 1976 CONY sw 1: ~oY ~H, ~DRQP_NO~
osoc aoE4ol 1977 ~ND ~H,1 090F 7518 Ig78 JNZ CONY_SW_SET
09~ 0804 1~79 QR ~SI~,~L
0913 EsOOOO 1980 C~LL JU~P ~GRS INI~
0916 E91000 1981 J~P CONV_SW SET
0919 a~24 1982 CONV_SW_0: ~ov ~H, CSI3 0918 343F lg83 XOR ~L,3FH
091D 2004 1984 ~ND ~SI~,~L
091F E80000 lga5 C~LL DROP 8IT ~L ; 10,'1~ H~n~ou l!!
0g22 22C4 3 9a6 ~ND ~L,~H
0924 7403 1987 J2 CONV Sw SET
0926 E80000 1988 C~LL JU~P ~bRS INI.
092g E80000 198g CONY_SW_SET: C~LL JU~P ~DRS IHIT

~992 ;
092E 8~540S lg93 KEY DEPRESS: ~ov DL,tS I+5~ ; I
0931 soE2o2 1994 ~rD DL,2 , K~e~,~ Curren~ Gcrrec~ed 0934 740~ 1995 JZ ELSE_ST~TUS

1 33804~

HE4LETT-F~CK~RD: ~086 ~s~bl~
~ SOURCE LI~E
0936 B01C 1986 MOV f~L~KEY_PlJ8H_CODE
0938 A28907 199~ ~OV tKEY_D~T~4L
0938 E80000 t998 SRLL DROP_TO_CONV
093E F9 199g STC

0940 F8 ~Oa1 EBSE_ST~TUS: CLC

2003 , 0942 E80000 2004 RESP_YLF_ERR: C~LL DROP TO_CONV
0945 BE80q0 :005 MOY SI~VLF ERROR_M~P
0948 B,'OO 2006 ~OV BH,0 094A 8PlE2C07 2007 ~OV BL~CID_BYTE~ ;
094E 03D8 2004 ~DD BX,BX
0?~0 8B00 2009 ~OV ~X,tSI~CB~
0952 0S0200 010 ~DD ax.. 2 09S~ 3S0100 2011 XOR ~Xr1 09~8 8900 2012 MOV CSIICBX~r~- J
O9SA C OC8 2013 ROR ~L
095C 2303 2014 JNC VLF_ERR RET
09SE E80000 201S C~LL JUMP ~DRS_I~IT
0961 F8 ;016 VLF ERR RET: CLC

0963 8~4C03 2019 DROP_RE8P_B4: MOV CL,tSI+3~ : C81~CIClfDROP~ C01]C~E
0966 80F900 2020 C~P CL,0 0969 f-42D 2021 J RESP 84 ~RET
- 2022 ;
096B 8~6402 2023 MO~f ~H, tSI~2~ r f ~H ) = ID BYTE
096E 88262C07 2024 MOV tID_BtTEl,~H
202~ ; .
0972 E8q000 21~ ~ C~LL IC~_DP0P DE8ISE : ~~~`~ CON~ ~O, DROF_~O . DErlCE NO
097S E80000 2027 CALL DROP TO_SO~V
2028 ;
0974 8A6C04 2029 MdV CH,tSI~4~
0978 882E890? 2030 ~OV CKEY_D~T~,CH
203t !
Q97F 8E8~00 ;03~ MOV Sr,fLF ERROR_Mf~P
0482 B700 ~033 MOV BH,0 Q984 8~1E2C0i -034 MOV BL,tID BtTE~
0948 03CtB 203S ~DD BX.BX
0?4A 812OFEFF ~036 f~ND WORD PTR tSI~C BX ], OFFFEH
03~ ;
094E 40FDFF 2038 CMP CH~OFFH
04~1 7402 203~ J' SEHS_-;T4TUS
0993 F9 2040 STC : Pu~h 1~ B~r-i ~~~- B~=l 0494 C3 ~041 RET

O?~S E8Q000 2043 SENS_ST~TUS: Cf~LL SPU_ST~TUS RE~ ; QFFH ~~~~ St~-~k~
0-~g8 F8 2044 ~ESP_54_~RET: SEC
0?99 S3 ~04S RET
2046 :
2q47 ;
204B ;
cQ49 1~084L SPECI~L SP'J 1 20S0 ;
20S1 ;
20S2 ;
..

~ 1 338044 HEl.lLETT-P~CK~RD 3086 ~ssem~ler SOURCE LINE
2053 EXTRN POWER_DET_CMD
20S4 EXTRN LQ~ FRQ~ DPOP
ZQ5S EXTRN LO~D TO bROP2056 EXTRN SPU ST~TIJS REO, 2059 EXTRN CON' S~ BIT ~L
2060 EXTRN DROP BIT_~L
2061 EXTRN SPU_REL~'T' OFF
2062 EXTRN SPU CLE~R DISP
~063 EXTRN EVENT EED OFF
7 064 EXTRN DROF ~P SET
206S EXTRN KE'-,' OPER~TION
2066 EXTRN CQN~ TO DROF2067 EXTRN DROP TO CONV2068 EXTRN BINDEC LED
2069 EXTRN LED VIE~_TBL2070 EXTRN SPU_LED_DISP2071 EXTRN RlJN CONVERTER
2072 EXTRN W~E~RI DE_ON2073 EXTRN OP SPU OFF
2074 EXTRN OP INITI~L
2075 EXTRN B~SE_ROUTINE2076 EXTRN JU~P ~DRS INIT
2077 EXTR~ ilJ~P ~DRS INr~
2078 EXTRN DEVICE ~P_SET
207g 2980 EXTVN P~Y_GROlJP_~2081 EXTRN P~Y_GROUP_2 Errors- 0 CROSS RQPEUENCQ TABLQ
SYMBOL TYPE ._~i U CTRL I A 433,777,801,836 85 CTRL I COUNT A 444,778,798,833 88 CTRL_2 A 445,738,752 89 CTRL 2 COUNT A 454,683,686,757 DQVICQ_MAP_SET Q 1225~1227~1229~1231~17~ n78 106 DQVICQ NO_BIT A
1204 DQV_CLR A 1198,1200 1208 DQV_NEXT A 1185 1167 DQV_RQSP WT A 1169,1177,1181,1189 1201 DQV_SW_0 A 1195 1196 DEV_SW_I A
1592 DISPLAY_MQMORY A 1546 1609 DISP_MEM_5517 A 1599 136 DOWN_FLAG A
1264 DROP_ACCQSS A
DROP_BIT_AL E 1985,2050 143 DROP_CMD_BF A

231 DIU7 DATA IYII~T A 681,829 1160 DROP_INIT_LP A 1218 DROP_M~P_SQT E 1223,2064 100 DROP_NO A 1196,1976 105 DROP_NO_BIT A
1931 DROP_RESPONSE A 1264 1948 DROP_RQSP_01 A 1937 1950 DROP_RESP_04 A 1939 2019 DROP_RQSP_84 A 1942 1944 DROP_RESP NOP A 1933,1941,1948,1967 DROP_TO_CONV E 1998,20u4,2027,2067 1213 DRP_NEXT A 1161 120 DSI A 1-1 1-71711~17~,1771~8~1m~ 132~133~134~135~136~137~138 142 DS16 A 143,144,145,147 81 DS2 A 82,83,84,85,86,87,88,89,90.91,Q,93,94,95,96,97,99,100,101,102,103,104,105,106,108,109,110,113 97 QCHO_BACI~_ADRS A

91 QCHO_BACK_FLAG A 447,Q2,1016,1110,1446,1451 161 QCU_ADDRQSS A 162,163,164,999,10u6,157~i 1 'A6,1'^6,1"6,1730 1725 ECU_ADRS_READ A 461,1278 232 ECU_H_ADDRESS A 1728 233 ECU_L_ADDRESS A 1725 182 ES BACI~ UP A 1356 183 ES_BACI;_UP_I A 480,498,1353,1357,11~,1A'6,1~67,1368,1371 184 ES_BACK UP 2 A 477,499,1351,1360,1374 186 ES_EVENT TIMER A 1319,1745,1804,1807 62 EVENT_CHANNEL A 1316,1341 194 EVENT ~EYAACODE A
EVENT_LED OEIF E 1206,2063 153 EVENT_NO_FREO A 1810,1818 914 EXIT A 883,895,899 CROSS REPERENCE TABLE
SYMBOL TYPE
72 A200N A 73,74,75,76 239 ACHC A 343,346,354,362,370,373,377,381,539,569,571,574,582,604,610,614,6N,R~,R~9,8'0,q01,915,969,1023,1029 1031,1047,1U8,1052,1054,1 '6,1 1' lnql~lo95~lo97 lloo 238 ACHD A R7~,1l3,6l9 qR~

1006 Al,OHA_CHECK A

208 ASCII_AU A
212 ASCII_CL A
218 ASCn_CO A
215 ASCn DE A
207 . ASCII ER A
210 ASCII_FC A

211 ASCn_PC A

213 ASCII_SE A
195 AUTHO_KEY_CODE A
4K BACK_UP_CKI A 490 504 BACK_UP_CK2 A 509 514 BACK_UP_EXIT A 482,493,510 512 BACK_UP NONE A 495 497 BACK_UP_YES A
94 BASE PO~1T A 1768 BASE_ROUTINE E 1766,2075 66 BASIC_AUTHO A 1780 241 BCHC A 3~n,l~R,~'6,584,588 122 BEFOR_EVENT A 1339 52 BIAS A 55,56,57,58,59,60,61,62,64,65,66,276 96 BINARY_LED A
BINDEC_LED E 1345,1663,2068 1852 CAL_STDB A 1855 1459 CCC_CMD_20_7F A 1456 14K CCC CMD_JMrl'f3L A
1649 CCC_DROP_CMD A 1457 1898 CH4_5 A 1869 1906 CHANNEL_HOSEI A 471 73 CH_NO_FFBQ A 1819,1885,1906 199 CLEAR_KEY_CODE A
1464 COLD_START A 1461 99 CONV_NO A 431,1'~'~6,177~,1710,171'~ R4,1342 104 CONV_NO_BIT A 1337 117 CONV_SELECT A 434,435,436,437 CONV_SW_BIT_AL E 1192,1973,2059 1989 CONV SW SET A 1978,1981,1987 CONV_TO DROP E 1334,1389,1471,1658,2056 CROSS REFERENCE T~BLE
SYr1BOL TYPE REFERE~tCES
109 EXTR1`t_5T~T ~ S30,9~2,B76 1466 FORCED KE t ~ 14S9 1670 FORCED_OFF ~ 1661 1663 FORCED_ON
1655 FORCED_TUNE . ~ 1544 1482 FORwaRD_CrtDTBL a 14S4 1 -~46 FORw~RD_CMD_CK ~ 1 2SG
1451 FoRo~RD_cOrtE ~ 1449 1 ~76 - FORU~RD_JUr1p Q 1484 1858 FREO_C~L ~ 1347,1853 1843 FREQ_C~LC ~ 470 14S FRor1 - o8F - pF ~ 1141,1144,1150,11S3,1 167,11.-Q, 14~1,19-:.4.14~S1 1141 HPJlr1E1 ~ 1143,1147 1139 H~ J I rtERUYo ~ 5S 1 S68 HDLC_TX_ST~RT ~ ~ 6g6 170 HISTORY_BUFFER ~ 4S4,735,324 11So HoNBaNl ~ 11S2,11s6 -127 HSB_LED
782 I BF_ I ST . P~
828 IBF_2ND ~ 790 78S IBF_E~IPTY
790 IBF_EXIST ~ 793 77~, lBF_lNTERRIlPT
82S 18F_~1E~O ~ 823 S8 18F_OYER_FLOW
803 IBF_P~CKET ~ 7~9 8~0 ~BF_RET ~ 733,826,834 830 IBF_SET a 101 IC_BYTE ~1 1333,1 3f .', 1467,1656 - -;r~IC_DROP_DEVICE E 13 a,1470~ 1657,2058 103 ID_BYTE ~ 1164.1180,1 ~S1,1960,2Q07,2024,2034 ID_DROP_DEYICE E 116C,1335,19S2,2026,2057 169 INDEX_HISTORY ~ 46Q,724,736,903,325 82 INDEX_RX_1 ~ 427,1676 86 INDEX_RX_2 ~ 441, .42,753 83 INDEX_TX_1 ~ 42a,f76,796,83 1773 INIT_~UTHO_TBL ~ 463 1833 INIT_CODE ~ 465 183S INIT_CODE_LP ~ 1839 1747 INIT_EY_1 ~ o 174S I N I T_E~_T I r1ER ~ 4 73 1761 INlT - Jur~p - Lp ~ I .64 17S5 INIT JU~P TBL ~ S1S
9S INIT_POINT ~ S3 1737 INIT_Tlr~_LP ~ 1740 173S INIT_TI~_TBL ~ 514 1792 INIT_YIEW_LP ~ 1749 1790 INIT_YIEW TBL ~ 464 17S7 INIT wa DOKO ~ 17'5 235 INTIOFST ~ 2~9 236 INT30FST ~ 2,42 234 I NT_OFST ~ 296 7S JU11P_~DDRESS ~ 1 Z59 JUr~P_~DRS_I N I T E I ~9'3, 2 Q 1 S, 2 076 JUI`IP_~IDR S_ l N I Z E 1 ~9 0, ~ 99 9, 2 07 ;' . ~

CROSS PEFERENCE T~BLE
LINE# SY~80LTYPE REFEPENCES
1782 JUN ~ 1745 177S .JUtJ~`O ~ 177~
1271 KEY_~PPLIC~T ~ 12S4 130 KEY_Q~T~ ~ 1347,1169,19q7.2030 160 KEY Q~T~ ST~CK ~ 161 1993 KEY_QEPRESS ~ 19,1 KEY_OPER~TION E 1-,1,147~,~065 205 KEY_PUSH_CODE ~ 1~ 6 LED_vlEW_T8L E 1664.~069 LoaD-FRo~-DFop E 114~.1151,1168,1q32,2054 LO~D_TO_DROP E 1650,~0SS
873 L~t ~ 86~
876 LO~ ~ 87'.~75 18t2 LP1 ~ 1416 1821 LP2 ~ 14c7 12S Lse LED
1~S6 M~IN_LOOP ~ 1~7~,127q 424 raIN_ST~RT
197 ~ I NUS_KEY_CODE
1371 ~ov l INIT ~ 1364 1363 rqV_1_5T a 13S4 1356 MO~ ~_ND Q
126 ~S8_LED
1871 MU-TI ~ 1886,1899 t08 MUL ~DR ~ 1843,1871 191 MUL_NO ~ 1843 1016 MY_~DRS ~ 1000,1002 1014 ~Y_4LOH~
76 NEXT_GO_~QRS
121 NOU_EVENT ~ 1311.1331 1~80 NO SEND ~ 1.568 116 OBF_BF_BYTE ~ -114 OBF BF CMD ~ 4S3.756 11S OBF_BF IQ
113 08F_BF_N ~ 114,11Y,116,117,446,688,6~9.680~755 679 OBF_INTERRUPT
736 OBF_MEMO ~ 734 7S5 OBF_NEld ~ 740 ,22 OBF_P~CKET ~ .
759 OBF_RET ~ 700,712~720 700 OBF_RET_1 ~ 703 131 ONE_SEC_TIMEP ~ 45, OP_INITI~L E 1756,2074 OP_SPU_OFF E 1670,2 n 73 17S P~GE_MEM ~ 450,733,82~
PQGE_SW ~ 4S1,850,,q96,1020 P2Y_GROUP_l E 14~0.2080 P~Y_GROUP_2 E 1482,2081 61 PC_CODE ~ 1833 13, PC_FC_EXIST
65 PC_FC_LIST ~ 1,73 193 PEUS_KEt_CODE
1223 POLL I NG_SE~ ~ 1-16 222 POP_~LL
POUER_DET_C~D E 1110~1149,~0S3 138 POIJER_FEED ~ 43 ~ 279 1 ~3804~
- Cpq- FEFERENCE TASLE
s~poL T~PE FEFE~ENCES
202 POWER_OFF_CODE A
201 POwER_ON_COGE
128 PPV_LED
PROGRAMYERSIO~ A 50:,51 221 PUSH ~LL a 276 RAM_CLE~R A
273 RAM_CLE~R LP ~ 231 2Q3 PECENT_ON_COGE A
204 RELEAsE_cqGE

719 RESPONSE CHK A 6q7,698,709, 16 745 RESPONSE_TRNS A 7SQ
711 RESPONSE_ AL A 70, 2044 RESF_84_NRET A 2021 2004 RESP_vLF_ERR A 1857 141S RETTIM2 A 14n7 92 REVERS_CHANEL ~ 443,5,5,1572,153S
252 RU,N A 1464 RUN CONVERTER E 1346, 1666,2071 1038 RX_CRC ERR ~ g93 S6 RX_CRC_ERROR ~ 1033,1039 S7 RX CRC OK_`fO A 9q4,9q5 g90 RX_INTERRUPT A
992 RX_RCV a 1042 Rx_RECEIVE A 992 1022 RX_RET P t004,1009,1040 198 SCAN KEY_CODE A
S9 SCAN_~ODE_FLAG A 467 S SEIS~KU_DD ~ 520 6 sElsaKu-MM ~ 519 a SEISAKU_ W ~ 521 7 SEISAKU YY ~ 513 148 SEND_ADDRESS A 149,150,151,1S75 lS0 SEND_CMD_RESP Q 1 S70 151 SEND_D~TA_8UFF A
14 sEND-ENAeLE A 143,1559 1552 SEND_FUNC_MOD A 1436 14g SEND_INDEX ~ 1563,1566,1 3,1571 200 SEND_KEY_CODE
224 SEND MAX ~ A
1566 SEND_RE5PONSE A 1433 2043 SENS STATUS a 2039 561 SETCO~ ~ 347,-51,3S5,3S3 ~63,36 ~ - 3 53 54Q
16-5 SPE01AL_SPU_1 A 2049 SPU CLEAR_DISP E 1205!2062 144 SPU_CMD_SF A
SPU_LED_DISP E 1665,2q70 SPU RELAY_OFF E 1~04,2Q61 SPU_STATUS_REQ E 1166,2043,2056 177 STACK_END

61q STORE_ME~ORY A 1543 1635 STOR_MEM_551 ~ 1626 16,7 ST TRNS2 A 1632 1639 ST_TRNS3 ~ 1637,1644 -- ~338044 CROSS REFERENCE TABLE
SYMBOL TYPE

1558 S_F_M_SET A ISS3 110 TEMP_R_CH A 429,S76,60S,1086 237 TlbERl_OFST A 304 1391 TlbER ACTIVE A
1403 TIMER_CNIC A 1292 168 TIMER COUN113R A S00,730,819,1297,1301,1348 1292 TIMER_OPERAT A 12S7 192 TIMER_OUT_CODE A 1386 1396 TIMER SLEEP A 1382,13U
1376 TDI~ER_TOB A 11~7,11'U,1''1,1369,1373 1301 TIMER_TOB2 A
1348 TIMER_TYPE_2 A 1303,1306,1312,1326,1329 1297 TIMER_YO A 1293 74 TIME TABLE A 1379,1735 79 TO_CCC A 439 78 TO_DROP A 426 134 TUNER_CBL A
132 TUNER_DI A

93 TX_BUSY_PLAG A 430,921,1109,1685,1695 1702 TX_CCC_N_RET A IU9,1462,1494,1496,1498,1500,1502,1504,1506,l508,l5l0,l5l2,l5l4,l5l6,l5l8,~ lc~r~ 4l~ ls1n ls32~ls34~l~36~ lc4o~l~s6~ ,]''l,I''~ S,16SI,1668,1671,1687 1685 TX_CCC_RUN A 1578,15B8,1607,1617 163 TX_COMMAND A 1594,1621 162 TX_LENGIH A IS97,1624,167S

1600 TX TRNS2 A 160S,1681 896 TX_UNDRN A

1862 UP64_D A 1902 13S UP_FLAG A
VEW_CHANNEL A 1790 64 VLF_ERROR_MAP A 15~,2 s~nl7 2016 VLF_ERR_RET A 2014 64S WAIT A S94,S9S,S96,S97,S98,S99,600,601,63S

WAKE~Rl_DE_ON E 1667,2072 IS69 YES_SEND A
1892 ZERO A 1863,186S

~ 281 l 338044 HEldLETT-P~CK~RC: 8086 ~=~emblei~
SOUFCE LINE

2 ;
3 *****************~*#***********~-~******************#~ *************
- 4 ;
5 SEIS~KU DD: EQU 02H
6 SEI5~KU ~: EQU 12H
7 SEIS~KU_'tt: EQU S8H
8 SEIS~KU_W: EQU Z : Ver-,ion No.
~; *****
-10 ;~#*~ <~< ~pplic3tion >~
~1 :~#*~ =zs===========
12 ;~##
1~ ;#*~** ------ Bu h.T~N~K~ ------14 ;#**~
1S ;***t* Function 16 :#~*** ~ -- SPU K~ Cor,trol 17 ;***** 6 Drop H 4 SFU ~ 2nd Sub5--riber 18 ;~#~**
19 ;#*~ .23 --- R3m B3--k ~Jp 20 ;##***
21 ;*~ 3~ --- H~rdw~re Checl~
22 ; #**#~
~3 ;~#~*# Off E~nt Con~ SW D~ice ~to. ~3 ~egit) 24 ;~#~ Of f S~nd R~vrese Dat3 S~nd ~S ;~*#~# E~nt E.~ent LED On 26 ;~#*##
2~ **#
28 ;*##*#
Z~ ##
30 ; #~#
31 ;~ 32 ;##~##
33 ;#***********************~******#************#*#***~*******.*~**.
34 ;SSS**
3S ;S*tSS C~ 8-Jg Li-5t ~,'`' 36 ;SSSSS
37 ;S*5*$ ~1~ 2< 2n~ S~b. ie Con~erter On.~'Off ~3 0~.3=hi~
38 ;*~SSS
39 ;~SSSS
40 ;tS~t 41 ;SSSSS
42 ;SSSSSS~tSSiSS<SSSSSS*SS33SSSl SSSSSS~SSSSS~S.S3.5SS33SSS~iSiSS3E3SS33 45 ;
46 BI~S: EQU 0000H
4~ :

49 PRûCR~M~ERSION: EQU BI~S , DS 4 50 RX_CRC ERROR: EQU BI~S+4 DS 4 51 RY_CRC_OK_YO: EQU BI~5~8 ; DS 4 52 IBF_OVER_FLOI~: EaU BI~5~12 ; DS 2 S3 SC~N_~ODE_FL~G: EQU BI~S~14 ; DS I
54 ~IEW_CH~NNEL: EQU BI~5116 ; DS 8*2 55 PC_CODE: EQU BlaS~32 , DS 8~2 56 EVENT_CH~NNEL EQU BI2S~48 DS 8 57 ; . EQU BI~S 56 ~ 282 1 33~044 HEI.ILETT-P~CK~RD: 8086 ~ m~
SOUCCE LINE
S8 '~LF ERRrlR_M~P: EQU B1~5~1-8 ; D5 lc8 59 PC_FC_LIST: EQU BI~5l25B ; DS 128 60 B~SIC_~UTHO: EQU BI~5+2'6l128 ; D5 1~8 61 ; BI~SI~l.

65 :
66 ~ZOQH: EQU 20OH
67 CH NO FREQ EQU ~200H ; DS 2~6 FREQUENC`; T~BLE ST~RT FRO~ HERE68 TI~E_T~BLEI EQU ~200H1100H ; ~*8~2 69 JUMP qDDRESS: EQU ~Z00H~1~QH ; ~*8*2 70 NE~T_GO_~DRS: EQU ~200H+200H : 64*~
7t ; --- 430H
72 TO DROP: EQU 0500H
73 TO_CCC: EQU 060OH
74 ) 75 DS2: EQU 0700H
76 INDEX_RX_l: EQU DS2~2*1 77 INDEX TX 1: EQU DS2~2*Z
78.CTRL_1: EQU D5212*3 7g CTRL_l_COUNT: EQU DS2~2*4 80 INDEX_RX_2: EQU DS2~2*~
81 INDEX_TX_2: EQU DS2~6 82 C'TRL 2: EQU DS2+2*7 8~ CTRL_~_COUNT: EQU DS2~2*~
84 PRGE_SY: EQU DS2~2*8 85 ECHO B~CK FL~G: EQU DS212~10 86 REVERS_CH~NEL: EaU DS212*11 . 87 TX BUSY FL~C: EQU DS2+2~12 88 B~E POINT: EQU DS2 2~1~
89 INIT_POINT: EQU DS2~2*14 90 BIN~RY LED: EQU GS2~2*15 91 ECHO_B~CK_~DRS: EQU DS2~2~1B
g2 9~ CONY_NO: EQU DS212~18 94 DROP_NO: EQU DS2~2*1~
95 IC_BYTE: EQU DS2~2*20 ~6 DEVICE_NO: EQU DS212*21 97 ID_BYTE: EQU DS2~2*~2 98 CONV_NO_BIT: EQU DS2+2~23 g9 DROP_NO_BIT: EQU DS2~2*24 100 DEYICE_NO_BIT: EQU DS2~2*25 102 ~UL_~DR EQU DS212*2q ; DS 2 SToRE #3 103 EiYTRN_ST~T EQU DS2~2*30 ; DS 2 104 TE~P R CH EQU DS2~2~31 : DS 2 106 ~ 740H
107 08F_BF N: EQU DS2 2*32 :0000 orlrJo 108 OBF_BF C~D: EQU OBF BF Nll 10g OBF BF IG: EQU OBF 8F N~2 110 OBF_BF_BYTE: EQU OBF BF N~3 111 CONY SELECT: EQU OBF BF NllB , DS 8 113 i 114 DSl: EQU 0780H

283 1 338û~4 HEWLETT-P~CK~RD: 8086 ~ss~mbl~r SOURCE LINE
115 NuL E'.JENT: EQU DBI
tl6 8EFOR_EYENT: EQU DS1~1 117 E~ENT_EN~8LE: EQU DSl+2 118 LSB_LEQ: EQU DS1+4 120 ~SB LEQ: EQU QS1~5 121 HSB_LED: EQU DS116 122 PP'~_LEt: EQU DSl+,-124 KEY Q~T~: EQU DS1+8 125 ONE SEC TI~ER: EQU DS1+10 126 TUNER_Dl: EQU DS1+11 127 TUNER Q2: EQU DS1+12 128 TUNER_C8L: EQU DSl+13 129 UP FL~I;: EQU DS1+14 130 DOWN_FL~G: EQU DS1+1'.
131 PC_FC_EXIST: EQU DS1+16 132 POWER FEED: EQU DS1+17 133 , 136 DS16: EQU 800H
137 DROP C~D BF: EaU DS16 ~ DS 16 138 SPU_C~D_8F: EQU DS16+16*1 QS 16 13~ FROM_08F_BF: EQU DSl æ- 16* ; DS 16 141 SENG_EN~BLE: EQU DS16+16*3 ~ DS 1 142 SENQ_~QDRESS: EQU SEND EN~6LE+1 , DS 2 143 SENQ_INDEX: EQU SEND_~QDFES5+2 , DS 1 t44 SEND_C~D cESP: EQU SENQ ~tlt'PESS+3 DS 1 14S SEND_D~T~_BUFF: EQU SEND ~DQRES,+4 , DS 1~3 147 EVENT_N0 FREQ: EQU ~00H . DS 2S6 14~
1S0 HELP: EQU 0~00H
1S1;
1~ : ______________ 1~3 :
154 KE'~' D~T~ ST~C~: EQU 1000H : QS 16*64=11','$
ISS ECU_~GQRESS: EQU KE~' D~T~ ST~CK+16~64 ~ DS
156 TX LENGTH: EQU ECU_hQQPES5+2 ; DS 1 157 TX_C~3~r~ND: EQU ECU ~QQPESS~3 . DS 1 1S8 TX 8UFFER: EQU ECU_~DCRES5+4 DS 256 162 TI~ER_COUNTER: EQU 2000H-4 163 INDEX_HISTOR'~: E~U ~000H-2 164 HI~TOR'~_BUFFER: EQU ~00OH
I~S
1~6 1~
1~8 .:
16~ P~CE_~E~- EQU 300OH
1;'0 171 ST~CK END: EQU 38FFH

~ ~ .

~_ 284 'I 338~44 HE~LETT-PQCK~RD: 8036 ~ss~bl~r SOURCE LINE
172 ST~CK TOP: EQU 4000H
173 ~
174 ~ B~CK_UP R~ Rrea ~********~ t**~****~*****
175 :
176 ES_B~CK_UP: EQU 0 ; DS 512 177 ES C~CK_UP 1: EQU 200H ; DS S12 178 ES_B~CK_UP_2: EQU 400H ; DS 512 179 ;
180 ES_E'ENT_TIMER: EOU 600H ; DS 129~6 i82 ;
183 ~ di~te D~t~ ~**~****~-~*~***t*~t****t~-tt***~
184 ;
195 nUL NO EQU 3 la6 TIrtER_OUT_CODE: EQU 0 18? PLUS_KEY_CODE: EQU 10H
158 EVENT_KE'f_CODE: EQU tlH
139 ~UTHO_KEY COPE: EQU 12H
190 ONOFF KEY CODE: EQU 13H
t9t nINUS KEY_CODE: EQU 14H
t92 SC~N KEY CODE: EQU tSH
t93 CLE~R_KE'Y_CODE: EQU t6H
t94 SEND KEY CODE: EQU t7H
't95 POWER_ON_CODE: EQU t8H
196 POWER_OFF_CODE: EQU l9H
t-97 RECENT ON CODE: EQU t~H
198 RELE~SE CODE: EQU IBH
l9g KEY PUSH CODE: EQU lCH

201 ~SCSI_ER: EQU 45?2H
202 ~SCII ~U: EQU 4155H
203 ~SCII_SC: EQU S343H
204 ~SCII_FC: EQU 4643H
205 ~SCII PC: EQU 5043H
206 ~tSCII_CL: EQU 434CH
207 ~SCII SE: EQU 5345H
208 ~SCII ~D: EQU 4164H
209 ~SCII_DE: EQU 644SH
210 ~SCII NU: EQU OD49CH
211 ~SCII_NO: EQU OD4DCH
2t2 ~SCII CO: EQU 43DCH
213 ~SCII_PP: EQU 50.2H
2t4 ;
215 PUSH ~LL: EQU 60H
2t6 POP_~LL: EQU 6tH
217 ;
21 a SEND Y~X: EQU 64~2 220 ; ----------______-_ -______________________ 221 ; *~ *~ I / O PQrt ****~*~***~****************~**-~
222 ~
223 t 224 DROP_CMD_PORT: EQU OB2H
225 DROP_DQT~ PORT: EQU 090H
226 ECU_H_~DDP~ESS: EQU 0102H
227 ECU L ~DDRESS: EQU 0t00H
229 INT_OFST EQU 0~0Ht~5*4) ~ I 33~44 HEl~lLETT-p~l:KapG: ~086 ass-:~b 5nUI~cE ~ }rlE
_29 INT~OFST EQU 5' ~ 0 1IIT30FST EQU r.l~
- ~ I T I rlEPI nFsT EQU " ,?
'32 ~OHD EQU 0 :'33 ~CHC EQU 0 ~34 BCHD EQU o-'3S BCHC EQU ~,lr.

.38 QRC I 000H

.40 24~:
1000 8EaO03 242 JllMP ~GF~ INIT: MOV Sl, JUMP ~GtiFESi 1003 B700 243 MQ'~ BH.O
lOOS 8~1E2C07 c'44 MQ'~' t~L.tlG_t-l~.TEl 1009 02D8 ~4S ~DD BL,BL
1008 380EICO, 246 MQ'~ C`'., t l- I T_PO INT~ -109F 8908 247 . MOV t'; I ] tEX~.C-, 1011 C3 2~8 PET
2SO :
1012 8E8003 2SI JUMP ~DFS INIC MO': ~I . llJMP ~GCiFE35 lOlS 8700 -S2 MQV 8H,Q
1017 8~1E2a0. 2S3 MOV 8L,tlC t~-'TE~
1018 02DB 254 ~DD BL,6L
101D 8BOElC07 25S MQ'~ C`s, t INIT PQINT~
t021 8908 256 M0V t3IltE:.~,CN
1 023 C3 .57 PET
258 :
s5g :
1024 eE8003 _60 JIIMP ~GP~ INI : M0'~ Sl . JllMp - r~GGpE
t027 8700 261 MOV BH.O
lO~g 8alE2co7 -62 Mtl'~ BL,tIG_t~'-'TE~
102D 80F301 263 sQP 8L,I
1030 02D8 264 ~DD ~L,tiL
1032 880EIC07 265 MO'~ CX, t IN1T PQI~T~
t036 8908 266 MQV tSllt6;:1 0:~

269 : ~-~ -~ C~nvert~r --- ~ Pr~p ni her,k ~n ~
103g S6 269 CQN'~' Tl!_t1POP: PUSH SI
tO3~ E84E00 270 C~LL C0N'/ ~~ IT ~L
103D 2204 271 ~ND ~L.t~
103F 74t3 2'2 J' HIP0~0 1041 3~262907 273 MOV ~H.tIC_t-l;~TE~
104S 80E4FE 274 ~D ~H. OFEH
1043 ~8262C07 27S MO~ C ID e`~'TE~.~H
104C 8~262407 276 MOV ~H,t/,Q~1V NO~
1050 80E406 277 AND ~H, 06H
1053 89262607 -78 MQV rDPoP NO~,~H
1057 SE 27~ POP ST

10~9 9~262807 231 HIRQ~O: MQ~ ~H,tlC B';TEI
1 WD 38c62C07 . 232 MOV ~ TD B`~TE~.~H
n6~ ~2~240~ 233 ~tO'~ ~H.~c~ r~
106S a32:.607 2a4 MOV tDPOF ~1Q~,~H
~06~ 5E ~a~ pop ~l ~--i 286 t 338044 HEWLETT-PACKARD: 8486 A~s~mbl~r . SOURCE LINE

288 ;
106B 56 239 DROP_TO_CONY: PUSH SI
106C E81C00 290 CALL CONY SW BIT_AL
106f Z204 2gl RND RL,~SI~
1071 7402 2g2 J2 HIROYO
1073 B001 293 ~OY AL,l 1075 8A262C07 294 HIROYO: MOV AH,tID_B-iTE~
1079 OaE0 2g5 OR AH,AL
107B 88262807 296 ~OV tIC 8YTE~,AH
107F 3A262607 297 ~O'~ AH,tDROP NO]
t083 0AE0 298 OR AH,AL
1085 88262407 299 MO~ tCONV_NO~,AH

302 ~ -303 :
108B BE5007 304 CON~_SW_BIT_AL: MOY SI, CQNV SELECT
10eE 8500 . 30~ ~OY CH,0 1090 8QOE2607 306 MOY CL,tDROP NO~
1094 03F1 307 ADD SI,CX

1099 C3 309 REt 310 :
I as~ 50 311 CON~'_SW FLAG: PUSH AX

lO9D E8EttFF 314 CRLL CONV_SW_BIT_AL
lnqO 2204 315 AND AL,tSI~
t~2 5E 316 POP SI
10~3 59~ 317 POP CX
10~4 58 318 POP ~X
10~5 C3 31g RET

321 ; '~*****~#*!~* ID_BYTE ~ bROP_NO ! DE~JICE_NCI *~-~*-*~**~*~
322 , 10A6 50 323 ID_t~ROP DE'JICE: PUSH ~X
10A7 ~1 324 PUSH CX
1OA8 8A262C07 325 - MOV AH,tID_B'fTE~
10RC 8PC4 326 ~OV AL,aH
10qE 80E407 327 RND RH,.
10B1 88262607 328 MOV tDROP N03,pH
1085 8103 329 ~OY CL,3 ; A4 A3 A2 Rl Aq D2 Dl DQ
1087 D2C8 330 POR AL,CL , - - - A4 A3 A2 A I
10S9 2407 331 AND AL,7 ; 0 0 0 ~4 A3 ~ ~1 A0 10SB A22P07 332 MOV tDEVICE_NO~,RL
333 ;
108E E91 a 00 334 J~P ~RKE DAT~
335 ;
336 ; ~*~ *~ IC_SYTE ---:~ CON'~ NCI . DEVICE_NO **~**~~*~
33~ ;
10C1 50 338 IC_DROP_nEVICE: PUSH AX
lOC2 51 339 PUSH CX
10C3 8A26280-7 340 MOV AH,tIC_B'f~E~
10C7 8AC4 341 ~OY RL,AH
lOC9 80E407 342 RND AH,7 l_ ` 287 133~4 - HEldLETT-P~CK~RD: ~q36 ~emt~lAr SOUrCE LINE
10CC.88262407 343 ~OY tCON~/_NO~,~H
10D0 8103 344 ~OY CL,3 : ~4 ~3 ~2 ~1 ~n D2 ~ DO
lOD2 D2C8 34~ ROP ~L,CL , - - - ~4 ~ ~2 ~1 ~0 lOD~ 2407 346 ~ND ~L,7 , Q ~4 ~ 0 IOD6 ~22~07 347 ~OY tDEYICE_NQ~,~L
~48 ;
1OD9 B001 349 ~KE D~T~: ~OV ~L,1 lODe 8~0E24q7 350 ~OY CL,tCONY_NOI
lODf D2C0 3SI ROL ~L,CL
10E1 ~22E07 352 MOY ~CONY_NO_BIT3,~L
3S3 :
IOE4 BOOI 3~4 ~OV ~L,I
IOE6 8~0E2607 3S5 ~0'~ CL,tt`ROP_NO]
IOE~ D2C0 3S6 POL aL,CL
IOEC ~23007 357 ~OV ~DROP_NO_BIT~.~L
3~8 ~
tOEF B001 359 ~OV aL,I
10f1 8~0E2~07 360 ~OY CL,tDE';ICE NO]
IOF5 D2C0 361 POL ~L,CL
10F7 ~23207 362 ~OV tDEYICE_NO_BIT~,~L
. 363 ;
lOF~ 59 364 POP CX
lOFB ~e 365 POP a~
lOFC C3 366 RET
367 ;
368 ; *******~**~ TO_DROP t~uff r ~pa~ ? ~*** ****-***:k:~ k*~*: k:k ~:t:~ J
36g ;
lOfD ~00607 370 Tq_DPOP_SP~CE: ~OY ~L,tCTrL_13 1100 3C28 371 C~P ~L,40 1102 F~ 372 C~C

374 ;
37~ ; *~*****~*~ ~L W~ Suu~ i ' ****~.*****-~~ k .
376 ;
1104 3C30 377 K~7UKO: C~P ~L,3QH
1106 7203 37q IC K~ZUKO PET
I I oa 3C3~ 379 C~P ~L,3~H
110~ F~ 330 C~C
1108 C3 331 K~7UKO_RET: PET
382 , 333 : ************ TO DROP t~u~f~r ni ir~ru ~*:***:~:4:~ *:k:k:~*:k:~ ~ ~ .t:~
3a4 ;
IIOC ESEEFF 335 LO~D TO DrOP: C~LL TO_DPOP_~P~CE ; Kor~nara ~r,,~nn~ !!!! ~!!~!!~
llOF 721F 386 JC IBF_OVR
387 ;
1111 ~BIE0207 3~ ~0'~ B~,tIN[!EX_R~
111~ 8~0C 38g ~0'~ CL,tSI~
1117 FEC1 3gO INC CL
lllg B~24 391 LDI: ~OY ~H,t;I~
111B 3827 3g2 ~OY tBX~.~H
11lD FEC3 393 INC BL

1124 FE06060.- 3~7 INC BYTE PTP CC:TPL I
1 1 "3 39 1 E 02 0 ,- 3g8 MOV t l NpEx - ~ . BX
1 12C Ea4705 3~9 C~LL IBF_UNM~SK

- ~' 288 1 338044 HEWLETT-F~C.~RD: ~0~6 ~ ~mbl~r SOIJFCE LINE
112F C3 400 RETPN: RET
1130 FF060C00 401 IBF_Q~P: INC wORr, PTP tlBF_O EF FLO~]

403 ;
404 ~ ~**~****** TO_CCC B~J-f~r ~ar~ torid~u *~ *~-**~~
40S :
113S hOOE07 406 LO~D_FPOM DROP: MOV ~L,tCTRL_23 1138 3C01 407 CMP hL,1 113~ 72F3 408 JC RETPN
113C 9BlEOCO.- 4Q9 MOV B~,tINDEX T:; ~]
1140 8POF 410 MOV CL,tBX~

1144 8d 7 412 LD2: MOV ~H,tB`~
1146 8824 413 MOV tSI~.dH

114h 46 415 INC SI

114F FEOEOE07 418 DEC BYTE PTF tCTFL_ ~ -llS3 891EOS07 419 MO~ tINrEX TN_7~ ,e:~;

llS~ C3 421 RET
422 ;
423 : *~****~****~ tiRQP M~P ~t ~~*~**~ **~~***~*****~ **~
424 ~
1159 BE0008 425 DPOP_M~P SET: MOY Sl,DPOP CMt~ BF
115C C60405 - 426 MOY BtTE-PTP t51~,5 llSF C6440107 427 MOY BYTE PTR tSl+li llC3 C6440210 428 MO/ B`ITE PTP tSI+c~.1QH
1167 C6440332 429 MO~ BYTE.PTF tSI+-i.32H
116B C6440454 430 MOY BYTE PTP tSI+4~,54H
116F C6440SF0 431 MQY BYTE PTP t~I+S~.OFOH
1173 E896FF 432 ChLL LOhD TO DFC~P

434 ;
435 ; ~***--~*~*~*~ Pow~r Det.~t l_Qmm3rd ~*~**~*~ *~*~**~ *~
436 ;
117 BE0008 437 POWEP_DET_CMD: MOY SI,DFQP CMti t-.F
117~ C60401 438 MOV BYTE PTP t^I~.1 117D C6440101 43g MOY BYTE PTR tSI+I~,l 1181 E8~8FF 440 C~LL LO~D TQ DFQP
11~4 C3 441 RET
442 ;
443 : ~**~*~**~** Subscril7~r Po~J~r QFF Control **~**~*~***~**~*~
444 :
1185 BEOOQ? 445 CQNY_P_OFF_CMD: MOV Sl,DROP_~;Mb_BF
1188 C60402 446 MOY BYTE PTR t;I~,2 118B C644010S 447 MOY BYTE PTR tSI+1~,5 118F ~02407 448 MOY ~L,tCQNY_NCl]
1192 2407 449 hND hL,7 1194 8a4402 450 MOY BYTE PTR tSI+7~,~L
11~7 E872FF 451 C~LL LO~D_TQ_DPQP
~52 ;
llgh hO2E07 453 MOY ~L,tCON- NQ SIT]
ll9D 343F 4S4 XQR ~L,3FH
llgF 20068007 45S ~ND tNOW_EYENT~,~L
11~3 C3 456 PET

~ 1 338044 HEI~LETT-F~C~RD: 8086 ~s ~nbl~r SOUFSE LrHE
457 ;
4S8 ; *-~****~****** Subscriber Power O~ Control :**:~'*:~:k'*:*-k'~*:*'*:*~ :**:*:~
4~9 ;
11~4 BE0008 460 CON. P ON_CMD: nov SI,DROP CMD BF
11~7 C60402 461 MOV BYTE PTR tSI~,2 C6440105 462 ~OV 8`tTE PTR CSI+1~,5 It~E a08D07 463 ~OV RL,CTU~ER_CEL~
1181 884402 464 r10v BYTE PTP CSll2~,~L
llB4 E85SFF 465 C~LL LO~t' TO DROP

467 ;
468 ; ~******* ;eIect Subscribcr C~blo *~'k*******~*~*******~'~*
46g ;
lle9 C3 470 C~BLE SEL CMD: RET
llBg 8E0008 471 r1O/ SI,DkQP C~D BF
llBC C60402 4,2 nov 8YTE PTR tSII,~
llBF C64401n6 473 r10v 8rTE PTR CSI~
llC3 ~09DO~ 474 r10V ~L,tTUNEP_CEL~ -llC6 247F 475 ~ND ~L "FH
llC9 8a4402 4,6 noY 8~TE PTR tSI~2~,~L
llCB E83EFF 477 C~LL LO~D_TO_CROP

47g :
480 ; ~*~*~*~ Tun~r Frequency Ch~nge Request ~**~**********~**

IICF BEOOOB 492 TUNER FREQ_CMD: nov SI,DROP_CMt'_BF
11D2 C60404 483 MOV 8YTE PTR tSI~,4 llDS C6440103 4a4 ~OV BrTE PTR tSI11~,3 I~D9 ~02407 4~5 ~0~ ~L,tCO~V_NO~
ItDC 884402 486 MOV BrTE PTP~ tSI~ L
llDF ~08B07 487 nov ~L, tTUNER_D1~
llE2 BB4403 498 nov 8`~TE PTR tSI~3~,~L
llE5 ~08C07 499 nov ~L, tTUNER_D2~
llE8 884404 490 MOV BYTE PTR CSI~41,~L
llEB E81EFF 4gl C~LL LO~D_TO DROP
llEE C3 4~2 RET
4g3 ;
4g4 ; ~*~**~**~**~ Convcrter ~o l!qok3~u Pro~r3n **~**~******** *~
4g~ :
4g6 ;
IIEF 50 4g7 RUN CONVERTER: PUSH ~X
llF0 53 4g8 PUSH BX

~00;
IIF2 ~02C07 501 MOV ~L.tIt1_BYTE3 IIFS 50 5Q2 PUSH ~X
503 ;
iIF6 E8~FOQ 504 C~LL GO_CON.ERTER
505 ;
llF9 BE8003 506 MOV SI,JUMP_~DDRESS
llFC B700 S07 ~OV BH,0 llFE 8~1E2607 508 MOV 8L,tDROP_NO~
1202 80C310 5Q9 ~DD BL,IOH
12Q5 9~F3 510 ~OV DH,BL ; DH = Fir~. ID_8;TE
1207 02Dtt ,11 ~DD BL,BL
1209 03DE 512 ~DD B~,SI ; BX s Firçt SPU ~lurlF-~c!c!pE5 120B B202 513 nov DL,- ; DL ~ First SPU r~O.

HEI~LETT-PQC~PD: 8086 Qse~mt~Ier SOUFCE LINE
120D E88QFE 514 CQLL CONY_SW_FLQG
1210 75-0 515 JNZ CON~1 VIEW_CK
516 ;
51~ :
1212 88362C07 S18 CONYO YIEld CK: MOV CID BYTE~,DH
1,16 88162~07 S19 ~OV CDEYICE_N03!DL
121Q E8,DFE 5 0 CQLL CON'Y'_SW_FL~B
121D 7S03 521 JN7 CONYO_NEXT
5?2 ;
121F E84000 S23 CQLL CON'Y'_SUB
~24 l 1~2c- 83C310 52S CONYO_NEXT: QDD BX,10H ; .JU~F_QDC!PESS
Ic25 80C608 526 QDD DH~8 ; ID_eYTE
1228 FEC~ 52- INC DL ; I-ONY NO
122Q BOFao6 S28 C~F DL,6 1~2D 75E3 529 JNZ CONYO_'.'IEW_l`K
12ZF E~1D00 530 J~P CON~_OF_END
531 ;
1-'32 88362C07 532 CONY1_~1ElJ_CK: XOV tlD_B'~'TE~,DH
1:36 88162Q07 533 NOY tDEYICE NO~,DL
12~ E85DFE 534 CQLL CONY_SW_FL~G
1s3D 7403 S35 J' CONY1_NEXT
S36 ;
1?3F E8cOOO S37 CQLL CON~.~_SlJE
,38 ;
1242 83C310 539.COtl'.'1_NEXTl QDD BX.lOH ; JU~P QDDFESS
1245 80C608 540 - QDD DH,~ }D_BYTE
1248 FEC2 S41 INC DL ; COtl'/_NO
124~ 80FQ06 542 C~F DL,6 124D 75E3 543 JNZ CON~l_VIEld_CK
544 ;
124F S8, S45 CONY_OP_END: POP QX
1250 QZ2C07 546 ~OV tID BYTE].~L
12S3 EqSOFE 547 CRLL ID_DROF_DE';ICE
12S6 Q08007 S48 ~OV QL,tNOW_EYENT3 1?5~ ~43F S49 QND QL.3FH
lcS8 Q28107 550 ~OV tBEFOF EVENT~QL
551 l 1c5F 5B 553 PqP BX
1.60 58 - 554 FOF ~X
1c61 C3 5S5 PET
55~ , 1262 8BbF 557 CON'.'_SUBl MOY CX~tBX3 1264 3BOE1C07 S58 C~P CX.tlNlT_POINT~
1.68 743D 558 JZ QKE~I

.5~2 ;
126C 8Q268007 S63 ~OV QH,~NOl.l E';ENT]
1270 F6C4C0 564 TEST QH.OI:OH

1~7S 32c268107 S66 XOP. QH,tBEFOF EYENT3 127a 84 6~E07 56, TEST QH.~CON'.' NO 9IT~
127D 741D 568 JZ ~ODE_S~E
1c7F 8a268007 569 ~OY QH,CNOl~ EYENT3 12B3 F6C480 5,0 QYQO: TEBT QH,80H
.. . . -HEuLETT-PaC~:~RD: a Q86 as~mbl~r SOUFCE L I NE
~286 7411 ` 571 JZ aYa3 1288 F6C440 572 TEST aH~4oH
128B 7406 573 J~ aYa2 aQ E8B801 s74 aYal: l:aLL EYENT_LEt?_NRM
12qo E9qqq0 S75 .JMP MoQE-saME
S76 :
1293 E8D901 577 a~ta2- caLL EvENT_LED_FLH
12q6 E9030q ~78 JMF MOQE_S~ME
S7~ :
1 99 E68701 580 aYa3: CaLL EYENT_LEG_OFF

12sc 3soElao7 582 ~ODE_S~ME: C~P CX,~BaSE POINT~
12ao 7503 583 JNZ aKlNa 12a2 Eal~6o2 S64 C~LL SPIJ_LEG_Dl;P
12~5 sa S85 QK I Na: PoP GX
12~6 sB 586 POP BX
~87 , 12a7 C3 S88 aKEMl: RET
58~ :
12~8 8a3E8507 S30 GO_CONYERTER: MOY BH.tMSE_LEG~
12ac 8~1E8407 591 MO~Y~ BL~tLse-LEG~
1200 E8EB03 gg2 CaLL GEC8IN_5x S93 . *#**#* EYE-IT Fr.~qr 3n T ~ i olJ ******
12B3 BEo009 ~4 ~OV Sl ~EYENT_NO_FREQ
12B6 ~08007 595 ~OV ~L,tNOIJ_EVENT~
lZes s4o62Eo7 5q6 TEST aL, ~ CO~I'Y'_NO_B I T
12BD 7503 5~37 JN2 CONV_EYENT
12BF BE0002 SB8 MOV Sl,CH_NIJ_FREC
12C2 03F3 S99 CONY_EVENT: ~DD s I, BX
600 :
12C4 8aoo 601 MOV aL~tsI~Bx~
12C6 a28807 602 MOV tTuNER-Q1~aL
12C9 8a6001 603 ~o~ aH,CSI~CBX~1~
t2CC 88268C07 604 MOY tTUNER Gc~.~H
1~DO DOC4 60S ROL aH
12D2 80E440 606 ~ND ~H,4OH
1cD5 80CC80 607 OR ahJsl~H
lcD8 oa~62407 608 OR aH,tCONY NO~
12DC B8.68D07 609 MOY tTUNER cBL~aH
1 ~EO E8C1FE 610 CaLL CONV_F_ON_CMG
12E3 E8D2FE 611 C~LL CaBLE_SEL_CMQ
1 E6 E8E6FE 612 caLL TUNER FRE~ CMQ

614 :
61S :
616 :
1~Ea BE8no3 617 STP CONYERTER: MOV SI, JUMP_~DQRESS
12ED B700 618 MOY BH,0 12EF 8~1E26q7 618 MOV BL,tDFOP NO~
17F3 80C310 620 ~DD BL,10H
12F6 8aF3 6Zl MOV DH,BL ; DH ~ Flrst ID_B~)~TE
12F8 02DB 622 ~DD BL,BL
12Fa 03QE 6Z3 aQD BX,SI : BX 5 F~r3~, iPfJ JUMP_~GGPESS
1ZFC B202 624 ~ov DL,2 : QL 5 Fir * sPu N.~.
lcFE E89aFD 625 CaLL CONY Sw FLac 1301 752S 626 JNZ CONV1_5TF CK
627 :

HEI.lLETT-P~CK~kCl: 80:~6 ~e~m~l~r ~OUPOE LIME
~ 628 ~
1303 8s362co7 6cq CONYo BTP_CK: 110V tID syTEJ~DH
1307 sst62ao7 630 ~ov tDEVICE MO~!DL
130B EsacFD 631 caLL CONY Sl~_FL~iJ
130E 7508 632 JN2 STPCO NE:~T
1310 sBoElco7 633 ~OY CX,tINlT POIMT~
1314 3soF 634 C~P tBX~.CX
1316 7534 63S JN~ CONV_~ E~ ET
1318 s3c310 636 STPI:O_NEXT: ~DD sx~1oH JIJ~P_~DDkE--S
131B 80C608 637 ~DD DH,S : IC`_B','TE
131E FEC2 ~ 63a INC QL : CONV MO
1320 80FRo6 63B CMP DL,6 13?3 75CrE 640 IN~ CON~rO_STP_~:F
1325 E82200 641 JMP CONY VIEW_STP
~42 1 1328 88362C07 643 CONYl_STP_C~: ~OY t IQ_BYTE~. DH
132C 8s162Qo7 644 ~OY tQEV I cE_MOJ.DL
1330 Es67FD 645 caLL coNy-sw-FLa8 1333 7408 646 J2 STPC1_NEXT
1335 ssoE1co7 647 ~ov CXJ tlNlT_POlMT~ -133~ 3soF 648 crP CBX~C~
133B 7soF 64g JN~' CONV_VIEW YET
133D 83C310 650 STPC1_NEHT: ~DD sx~1oH JU~P_~DCrkESS
1340 80C608 651 aDD DHJ8 : ID_BYTE
1343 FEC2 652 INC DL : CONV MO
1345 8oFao6 653 ChP DL,6 1348 7~DE 654 JNZ coNy1-sTp-cK
655 s 13~Q F8 656 CONY ~'IEW STP: CLC

658 ~
134C F9~ 659 C-3NtJ_~.JIE~l_YET: STC

661 , 662-: ##~**#~*###* D~vic~ ~P S~t *#*#*##~:**********~****-4***:t~ *'~' 663 ;
134E ~0~407 664 DEYlCE_~dP_BET: MOY dLJtCONV_NO~
13~1 8E0008 66S MO~ SIJDROP CMD BF
13S4 C60407 666 MOV BYTE PTR tSlJ 7 13S7 C6440108 667 MOV BYTE PTR C;I+1~J8 1358 884402 66a MOV BYTE PTR CS1+2~JaL : Drop No. = ~ ~L
135E C6440332 668 MOV BYTE PTR CSI+3~,32H
1362 C6440454 670 MOY BYTE PTR tsl+4~s4H
1366 C64405FF 671 ~ov syTE PTR tsl+s3~oFFH
l36a C64406FF 672 ~ov B~tTE FTR tSI+6~ ! OFFH
136E C64407F0 673 MOV B~tTE PTR C51+7I, OFOH
13~2 Es~q7FD 674 C~LL LoaD TO DROP

~76 ;
677 ; ********~*~ SP8 St~t,UT Ro~ 3t comm~r i Cr~3t- *******4* ~::4*~
~78 ;
1376 BE1008 678 ~PB_STdTlJ5_REO.: MO~ SIJBPIJ_CMD_FF
137q C60404 680 MUV syTE PTR tSI~.4 . L~ngth 137C C6440104 681 ~ov syTE PTR tSI+1~.- Drop comm~r.i 1380 ao2co7 682 ~OY ~LJtlD_B~TE~
13a3 884402 683 ~ov BYTE PTR tSI+2~L ID_BYTE
1386 C6440301 6~4 MOV BYTE PTP tSI+3~.1 : B~!t~ Count~

~-f 293 1 338044 HEWLETT-P~C~RD: 30aO ~s~emhler SOURCE LINE
138~ ao2~07 635 MOV aL,tDEYICE NO]
38D B84404 686 MO~ 8YTE PTR tSI~4~,~L : Status Rr-q. C~mm3nd 13gO E879FD D87 CdLL LO~D_TO DROP
t393 C3 638 P~ET
689 :
6g0 ; *#***##~#*-~# Clc3r De~ice Gispla~ Command ~*****~*~****~
691 ;
1394 BE1008 6g2 SP'J_CLE~R_DISP: MOY SI,SPU_CMD_BF
1397 C60404 6g3 MOY BYTE PTR tSI~,4 : Length 138a C64401Q4 6g4 hOV 8YTE PTR tSI11~,4 ; Drop Comm4n~
139E a02C0? 695 MOY aL,tID_BYTE~
13~1 384402 6g6 MOY BYTE PTR tSI+2~,~L ; ID_BYTE
13a4 C6440301 697 hOY BYTE PTR tSI~3~ Byte Count 13aa ~02~07 6g8 MOV ~L,tt)E/ICE_NO~
13~B OC30 6g9 OQ ~L,30H
13QD 884404 700 MOV BYTE PTR tSI~4~,~L : Cle3r Di~p. C~mm3r,d 13CO E85gFD 701 C~LL LO~D_TO_DROP

703 ;
704 ; ~ # Rcla~J Control OM Command ~******~*-~:*~*:~:k:::*:~:*
705 ;
1384 BE100B 706 SPU_REL~_ON: M0~ SI,SPU_C~D_BF
1387 C6040S .07 MOV B`~TE PTR CSI3,5 ; Length 13B~ C6440104 708 ~OV BYTE PTR tSI11~,4 ; Drop Command 13BE ao2C07 709 MQV aL,ClD_BYTE~
t3C1 884402 710 MOY BYTE PTR tSI~2~,~L ; ID B`TE
t3C4 C6440302 71t MOY BYTE PTR tSI13~,2 ; B~Jt- Coune 13C8 ao2ao7 712 MOY ~L,tDEVlCE_NO~
13C8 OC28 713 OQ ~L,23H
13CD 884404 714 MOY BYTE PTR tSI+4~,~L ; Relay Cont. 50mm3nd 1300 80FF 715 MOV ~L,OFFH
13D2 384405 7t6 MOV BYTE PTR tSI15~.~L , ON
13DS E834FD ,717 C~LL LO~D_TO DROP

719 ;
.720 ; *:~******##** Relay C~ntrol OFF C~,mmand ***:*:~**:k*:k*****:k***:.:~,721 ;
13D~ BE100a ,722 SPU_REL~Y_OFF: MOY Sl,SPU CMD BF
13DC C60405 ,723 MOV RYTE PTR tSI~,5 : Length 130F C6440101 .724 MO~ 8YTE PTR tSI~1~,4 ; Drop Comman~d 13E3 ~02C07 725 MOV ~L,tlD_BYTE~
13E6 884402 .726 YOV BYTE PTR tSI12~,~L ~ ; ID BYTE
13E9 C6440302 ?27 MOV BYTE PTR tSI+3~,2 ; P~te Count13ED ~02~0.7 ,728 MOV aL,tDEVICE NOI
13F0 0C2a 729 OR ~L,23H
13F2 aa4404 730 MOV BYTE PTR tSI~4~,~L : Relay Cont. 5Omm3r,~5 13.~5 B000 731 ~o~ ~L,~
13F7 834405 .32 MOV B`tTE PTR tSI15~,~L : OFF
13F~ EJOFFD 733 C~LL LO~C~ TO DROP

~35 ;
736 ; *********##* Ev~nt LED ON Command ******::k****:~ ******.**:** :

13FE BE10 oa 738 E;ENT LED ON: MOV SI,SPU CMD_BF
1401 C6040S 13g MOV BYTE PTR tSI~,5 : Lenqth 1404 C6440104 740 MOV BYTE PTP tSI~1~,4 : Drop Command 1408 ~02C07 741 MOV ~L,tID B~TE~
. . .

~ 1 ~38044 HEWLETT-Pf~CK~RD: 8086 Rss~nblær SOUF.CE LINE
1408 884402 742 MO'v BYTE PTR t~I12~!bL : ID_6YTE
140E c644n3q2 743 MOV 8YTE FTF tSI13~ 6~!t~ Count, 1412 f~02R07 744 . tlOV ~L,tDEVICE_~O~
1415 0C08 745 OR RL,8 14t7 884404 746 MOV BYTE PTR tSI+4~rf~L E~nt LEC~ C~r.t. Comm-n~i 141R 80FF .47 . hOV ~L!0FF~
141C 884405 748 hOV BYTE PTR C5I15l,fiL ; ON
141F E8ERFC 749 CRLL LO~D TO DR4P

751 , 7S2 ; ****~**#**** E ~nt LED OFF Crmm3r,.i ***~*~*~*~*********~*******
753 : -1423 BE1008 7S4 EVENT LED_OFF: MOY SI.SPU Ct18 6F
1426 C6040S 755 t10' 8YTE PTR CSI~.5 : L~n~th 1429 C6440104 756 hOY B'tTE PTR CSI~1].1 : Drop Comm3n~i 142C~ ~021'07 757 MOV ~L,CID_B'`'TE3 1430 884402 758 MOV 8-'TE PTF t6I~2~.f~L : ID_6YTE1433 C6440302 758 ~OV EtTE PTR tSIl}~ 6~t~ C4unt~
1437 R0~R07 760 MOV RL,CC`E'~'ICE NO~
143R OC08 761 OR ~L.8 143C 884404 76~ MOV BYTE PTR tSIl4~.f~L : Ev~nt, LEc~ ne~ C.~mm~n.i 143f B000 763 MOY bL/0 1441 884405 764 hOY 8YTE pTr CS1~5~,~L , OFF
1444 E8C5FC 765 CRLL LOf~D TO DROP

767 , 768 , ************ Ev~nt LED Normal C~mm3nd **~*~*****~***********~
769 , 1448 E883FF 7/0 EVENT_LEC`_NRM: C~LL EVENT_LED_ON
1448 8E1008 771 MOV SI,SPIJ_CMD_BF
144E C6040S 77~ MOV BYTE PTR tSI~,S : L~ngth 1451 C6440104 773 t~O~' 8YTE PTR CSIl1~.4 : Dr~p CDmm3nli 145S R02C07 /-74 MOV RL,CID 6'tTE~
1458 884402 77S MOV BYTE PTR CSI~2~,~L ; ID_6YTE
1458 C6440302 776 nov 8YTE PTF C5I~3~!2 , 6yt~ C~unt 145F R02R07 777 MOV RL,CDE"ICE NO~
1462 0C10 778 OR ~L,10~ ~
1464 884404 779 MOV BYTE PTR t6I~4~.~L : E./~nt LED Moi: C~3mm~r,d 1467 C6440500 780 MOV BYTE FTR CS115~,0 : ~orm31 146B E88EFC 781 CRLL LORD_TO ~P~OP
14~E C3 782 RET
783 ;
784 ; ************ E~nt LED Fl~sh CDmmand *********************~***
785 ~
146F E88CFF 786 EVENT_LED_FLH: CRLL EVENT_LED ON
1472 BE1008 787 MOV SI!SPU_Ct1C~ BF
1475 C60405 788 hOV BYTE PTR tSI3,~ : L~n~th 1478 C6440104 789 hOV BYTE PTR tSI~ 4 : Dr~p CD~m.3n.
147C R02C07 7~0 MOV RL,tIC~ B,TE~
147F 884402 791 hOV BYTE PTR tSI1c~!fiL : ID_6YTE
1482 C6440302 792 MOV BYTE PTR tSI~3~,B : ti~!t~ C~unt 1486 ~02R07 7~3 MOV ~L,tDEVICE NO~
14q9 OC10 794 OR RLJ10H
1488 C84404 795 ~OV B'tTE PTR CSI~41.4L : E~nt LED M~-d~ C~mm~r,i 148E C64405FF 796 MOV BYTE PTR C5I~5~0FFH : Fl~=h 1492 E877FC 797 CRLL LOf~t~_TO_DROP

HE~LETt-P~CK~RD: 308~ ~e~embler SOURl`E L{~E
7~9 :
800 ; ********~** SPU View Chann~l Oper3tion **-~**:~*****~******:kt*
801 :-1496 BE1000 302 SPU_VIEU_C)ISP: MOV SI,VIEW_CH~ EL
1499 B700 303 MOV BH,0 149B 8~1E2407 304 MOV 8L,tCONV MO~
149F 8~20 905 MOV ~H,tSI]tBY]
14~ aa4008 806 MOV ~L,tSI~tt~X+8]
14~4 8826a507 307 SPU LEC; ~X: MOV tMSB LED] ! ~H
14h3 ~28407 a08 MOV CLSB_LED],~L
~09:
310 ; ***~*~***~ SPU LED.~ EVENT LED Operatisn -.~ *~*'~ k~ *-~
311 ;
14hB 8EtO08 812 SPU_LED_DISP: MOV SI,SPU 5MD BF
14~E C60406 8t3 MOV BYTE PTR CSI],6 ; Len~th 14Cl C6440104 314 - MOV 8YTE PTR CSI+1],4 ; t)r-cp Cc~mm3r,d 14B5 ~02C07 3t5 MOV ~L,tlD_BYTE]
14B8 884402 316 MOV ttyTE PTR CSI+2],~L ; De~icefDrQp 14B8 C6440303 3t7 MOV BYTE PTR CSI+3],3 . B~Jte Count 14BF ~02~07 - 318 MOV ~L,CDEVICE NO~
14C2 0C50 319 OR ~L,S0H
14C4 884404 320 MOV 8YTE PTR CSI+4~,~L ; Di~pl3y Ch3r3cter Comm~n--14C7 C6440500 321 ~tOV BYTE PTR tSl+S]~0 , LSB
t4C8 ~08407 a22 MOV ~L,tLSB_LED]
14CE 884406 823 MtlV BYTE PTR tSI+6],~L : D~ta 14D1 E838FC 324 C~LL LO~D_TO DRQP
æ5 :
14D4 8E100~ 326 MOV SI,SPU_CMD 8F
14D7 C6440501 827 MO'V BYTE PTR CSI+5],1 ; MSB
14D8 ~08507 32S MOV ~L,CMSB LED]
t4DE 884406 829 MOV BYTE PTR tSI+6],~L ; G~a 14~t E82aFC 330 C~LL LO~D_T~_DROP

832 :
a33 ; **~*~***~*** SPU LED ~ EVE~T_LED Oper~tion :~k*~'~*:~:k*'~ k:k:~:~:k'~:
334 :
t4E5 BE1008 335 SPU_LED_DISFL: MOV SI,SPU CMD BF
14E8 C60406 336 MOV BYTE PTR t5I~,o ; Len~t.h 14EB C6440104 337 MOV BYTE FTP tSI111.4 : Dr-op Conm~3nd 14EF ~02C07 33a MOV ~L,CID_B'r'TE~
14F2 8a440c 33~ MOV 8YTE PTR CSI+2~,~L : De~iceiDr-op 14FS CS440303 ~49 MOV BYTE PTP; CSI~3~,3 : e~te Cour,t 14F9 ~02~07 341 MOV ~L,CDEVICE_~O]
14FC OC50 ~42 OR ~L,50H
14FE 334404 343 MOV BYTE PTR CS1+4],~L : Di~pl3~.~ Ch3l-3cter C,:,mm~n 1S01 C64405~0 344 MOV BYTE PTR CSI+S],30H ; LSe Fl~:h lS9~ ~0~40~ ~45 rtov ~L,CL~e_LED]
1508 384406 346 MOV BYTE PTR C51+6],~L ; G3t3 150~ E~FEFB 347 C~LL LO~t) TO_DROP
a48 ;
159E BE1008 849 MO'~ Sl,SPU CMD_BF
1511 C6440501 ~50 ~OV eYTE PTR CBI+S], 1 ; Mse 1515 ~oa507 351 MOV ~L,CMSB LED3 1S13 384406 3S2 MOV BYTE PTP~ CSl+o],~L : G3t.. 3 151B EaEEFB 853 C~LL LO~D TO_DROP

855 :

~ 1 338044 HE~LETT-PRCK~RCt 80e6 Rss~mbl~r SOURCE LINE
S.6 : *~*~******* SFU LED & EVENT LED Oper3tion **~*******~*******
85- :
1SIF BE1008 858 SPU LED FLbSH: MOV SI,SPU_CMQ_BF
1522 C60406 SSg MOV 8YTE PTR tS r ~ J 6 ; Lfngth 1525 C6440104 860 MOV BYTE PTR tSI11~r4 : Drop Comm3n~
1529 R02C07 851 MOV QL,CIQ EYTE~
152C g84402 862 hOV BYTE PTR CS1~2~,aL : t~vic~,Drop152F C6440303 863 MOV BYTE PTR CS1+3~.3 . Ey*~ Count 1533 R0,R07 864 MOV RL,CDEYI1E_NO~
1536 OC50 865 OR.RL,50H
1538 884404 866 hOV BYTE PTR csr l4~.~aL : Displ3y Char3~r Comm3n~
153B C6440580 867 ~OV BYTE PTR C51153,80H : LSB Pl3~h 1S3F R08407 868 MO~ QL,CLSE_LEDI
1S4Z 884406 86g nov 8YTE PTR CS1+6l.RL : D-3t31S45 E8C4FB 870 CRLL LORQ_TO DROP
871 :
1548 BE100~ 872 MOV Sl.SPU_CMD_BF
154B C6440581 8.3 MOV BYTE PTR CS1~5~,StH : _ MSE Fl3_h 154F R08507 874 MOV ~LrCMSB LEDI
~5S2 8B4406 87S MOV BYTE FTR CSI16~.bL : D3t3 15SS E8B4FB 876 CRLL LO~D_TO_QROP
1558 C3 87, RET

87,q #**##**~t~**~ SPU LED & E~ENT_LEQ N-:~ Op~ration ~***~********~
880 ;
1559 8E1008 881 SP1J_LED_FLRST: MOV Sl,SPU_CMD_BF
155C C60406 882 MOV BYTE PTR CSI3,6 ; Length 155F C6440104 883 - nov BYTE PTR tSI~1~,4 ; Drop Command 1563 ~02C07 884 MOV RL,tlD BtTE~
1S66 884402 885 MOV BYTE PTR tSI+23.RL D~vicefDrqp 1569 C6440303 886 MOV BYTE PTR tSI~3~,3 : Byt~ Count 156D R02R07 887 MOV RL,tDEVlCE_~O~
1570 0C50 888 OR RL,50H
1S72 884404 8æg MOV 8YTE PTR tS~4],RL : Display Char3.-t~r Comm.3n.i ~90 ~91;
1575 C6440583 892 MOV BYTE PTR tS~15~,S3H : USB Fla-=h 1579 C6440630 893 ~OV BYTE PTR tS1~6~,30H ~ Dat3 157t) E88CFB ~q4 CRLL LORD_TO_DROP
895 , 158q BE1008 896 MOV SI,SPU CMD BF
1583 C6440582 897 nov BYTE PTR C51~5~,8~H ; H~E Fl5rh 15a7 ~08607 a98 MOV bL,CHSE_LED~
15g~ 884406 89q MOV BYTE PTR tSI~6~,RL : D.3t.3 1$8D E87CFB 800 CRLL LO~D TO_DROP
~01, 1S90 BE1008 802 MOV Sl,SPU_CMD_EF
1593 C6440S80 903 MOV BYTE PTR tSI~5~,80H ; LSB Fl3=h 1S9- R08407 904 MOV ~L,tLSB_LEb3 158a 884406 905 ~OV B1TE PTR CS1~6~,RL ; D3ta 15~D E86CFB 906 CRLL LORtJ_TO_DFOP
9q7 ;
1 sno BE1008 908 MO SI.. SPU CMD BF
15a3 C6440S81 809 nov BYTE FTR C51~5~,8tH : MSB Fls=h ISa7 R08507 910 MOV RL,CMSE LED~
15aa 884406 q1t MOV BYTE FTF C51~6~L : Dat3 IS~D E85CFB 912 C~LL LOaD_To ~POP

297 I 33~044 HEI~ILETT-Pl?C~PG: 30a6 ~eeemtler SOUPCE LINE
lS80 C3 13 RET
314 ~ **~********* Ruthori~e S~r~teiruk~ . C- #********:~***~:~*
15B1 E85F00 ,15 RUTHO kRI: kRLL CON~_81T ~L aL = ** PI~N. NC
ISB4 881E1E07 916 ~O~ BX,WORD FTR CBIN~F-_LED~
ISB8 BE8001 ~17 ~O~ SI.BQSIC ~UTHO
ISBB c200 ,18 aND RL.CSI~CEXJ ; = 0 --- No ~20 , ************ IF PC Code=0 Then =1 EL5E 2=0 *~**~******
1SBE S3 921 PC CODE 0_K~I: PUSH BX
1S8F 56 ~22 PUSH SI
15CO BE2000 g23 hO~ SI,PC_CCIDE
15C3 B-700 924 ~ûV BH,0 15C5 8~1E2407 g25 ~O~J 8L,CCON~ NO~
15C, 02DB 926 ~DD 8L.BL
15CB 8B10 927 ~O~ C'X,tS13CBX~
1SCD 83F~00 ,28 . cnP DX,0 1SD0 5E ,2, POP Sl 1S~2 C3 g31 RET
932 r *********~** IF SC Node Then 2Sl ELSE 7=0 *******~***
15D3 E83D00 ,33 SC hODE K~I: C~LL CON~_8IT ~L
1SD6 22060E00 934 aND RL~tBCRN_~ODE F~R~]
1SD~ C335 RET
'g36 15DB BE2000 937 PC_CClC~E_~bRS: ~ûY Bl.. PI-_lOCiE
15DE B700 ~3B MOV 8H.0 lSE0 8~1E2407 939 ~OV 8L,CCON~ NOJ
ISE4 02DB - 940 ~DD 8L.BL
ISE6 C3g41 RET
942 : **~********* FC.FI` Li3t ~ ~uthori-_ CY= 1 ---.None ~********
1SE7 50 943 PCFC_MRP_RPUKd: PUSH RX
ISE8 E82800 944 C~LL CON~_BIT_~L : ~L - 2 ** CON, ~-10 15EB BE0001 945 - ~O~ Sl.PC FC LIST
ISEE B100 946 ~O~ CL,0 15F0 8aE0 ,04,7 ~K~NE: ~û~ ~H,~L ~ 7 = 1~ - - - No ' ISF2 .224 948 ~ND ~H.CSIJ
ISF4 22P48000 ~4, ~ND RH.CSIl123 15F8 750B ,SO JN7 ~K~NE CH~N
15F~ 46 ,SI INC Sl 15FB FECI g52 INC CL
15FD BOF964 953 C~P CL.100 1600 7SEE 9S4 JNZ ~K~NE
1602 S8 9~S POP
1603 F9 g56 STC

160S 5B 9Sô ~KdNE CHdN: POP ~X
1606 F8 g59 . CLC

961 1 ********** Drop No. Bit Po~it.ion ---i ~L **~*******-****
1608 S1 962 DROP BIT ~L: PUSH CX
1609 8~OE2607 g63 hO~ CL,CDROP NO~
160D 8001 964 hO~ ~L.l 160F D2C0 965 ROL ~L,CL
1611 59 g66 POP C~
1612 C3 ,67 RET
968 / *~********** Con~ert~r Bit Po--ition ---i RL **********~*****
1613 51 969 CON~_BIT_~L: PUSH CX

~ 298 ~ 338044 HEwLETT-P~CK~RD 3n86 ~s~nbler SOURCE L I IE
1614 aaoE24o7 970 ~ov CL,~Co~V_~o~
1618 B001 971 MOJ ~L, 1 t61~ D2Co 972 ROL ~L,CL
161C ~g 973 POP CX

97S; **##*~***#~ D~vice Bit Posit ion ---? ~L **::-~.**'.~:*m:*'~::t.'#:~:m*
161E Sl 976 QEVICE_8IT_aL: PUSH CX
161 F s~oE2~ 07 977 MOV CL, CDEVICE NO 3 1623 B001 978 nov ~L, 1 1625 D2C0 979 ROL ~L,CL
~62~ ~g g80 POP Cx IG28 C3 sa1 RET
982 ; ~* #*al#*# EVENT Modc ---.~ B~ Modfi ~ ##:~ #**:~*:****::~:
162~q ~02E07 983 EVEHT_To_B~SIC MOV QL,tCOHV_NO_BlT~
C 343F 984 XOR ~L,3FH
1-62E 2006aoo7 985 aND CNO~_EYEI~T~,~L
1632 C3 sa6 RET
9a7 ; *~ *~ Ti~r s~t opfir~tiOn #**~****:~*'t:*~****'**:~ :~
1633 B90200 9a8 T r MER_Q2_SEC MOV CX,2 1636 E92BOo 9ag JMP TIMER SET CX
B90400 9gO TTMER-o4-sEc MOV CX,4 163C E92500 991 J~P TIMER_SET_CX
163F Bso500 992 TIMER 05 SEC MOV CX,5 1642 E91 F 0 0 993 J~P T I nER SET_CX
1645 90 994 TIMER_UD_SEC NOP
1646 B9o~00 99S TIMER l_SEC nov CX,10 1649 E9 t 800 gg6 JMP T I MER_SET_CX
16~C B91400 997 TI MER 2 SEC MOV CX,2Q
16~F E91200 998 J~P TIMER_SET_CX
1652 B93200 999 TIMER 5 SEC MOV CX,50 165S E9OCOO IQOo J~P TrMER-sET-cx 1658 Bsc4oo 1001 TIMER_10_5EC MOV CX,100 l6sB E9060Q IOQ2 JMP TIMER_SET_CX
16SE B92C01 1003 TIMER_30_5EC MOV CX,300 lG64 S3 1OO~ TIMER_SET_CX PUSH BX
166S S6 1006 PUSH sr G~o BEOO 03 1 0 07 MOY S r, T I ME T~eLE
160q~ B~OO ~00~ MOV eH~o 166B 9~1E2907 lOQ9 MOV 8L,~IC_B~fTE~
166F 02D8 1010 aDD BL,8E
1671 s908 1Q11 MOV tSl~Bx~,CX

1674 5B lQ13 POP BX
1675 C3 IQ'4 RET
~O~S
~6 ; *~ IBF Int.rru~t Unm.~k :****:k~********:~******~ :t ~0~7 ;
1676 Bal2oo lola I BF_UN~SK MOV ~X,12H
167q Ba3~FF 1019 MOV D`~, nFF2~H ; leF Int~rr,l~t Unm,~l 167C EF 102Q OUT Gx,~X

1022 ;
1023 *********#** Ch~nn~l T3~ --" LEr~ **:~ *:~ :r:~ **:~*:~ :**
1024 ;
167E BEIooo 1025 ~IEW_TBL_LED MOV s r, ~ IEW_CH~NIEL ; ~ I G_BYTE~
1681 B700 1026 MOV BH,o 1 33~

HEWLETT-FRCKRRD: 8086 Qss~nb l ~r SOUP~CE LINE
1683 8b1E2407 10~7 MOV BL,CCONV_NO]
1687 sa20 1028 ~ov RH,csr~cB
1689 8a4008 1 029 ~I~V aL,tSI~CBX~8 168C 86268507 ~030 MOV tMSB LED~,RH
1690 ~2B40~ ~03' MOV CLiB_LED~,~L
1693 ssQ8 1032 no~ 8X,bX

1034 ;
1035 : ***~*****~* LED --- B3' **~*~#~*****~********~:*-~*~********
1036 , 1696 8b3Esso7 103- LED BIN_BX: MOY BH.CMiB_LED~ : 8.Y ~--- LED
16sa 8~1 E8407 1038 MO~ BL,CLS6_LEQ~
1039 , 1040 : ************ D~cim~l to E~n3ry **~*~*~**********~ **~**~-**~

16sE 80E3qF 1042 CECBIN t3~: aNQ BL,OFH ; ex bSCII Decim~ x Sir 3r~.
16R1 80E70F 1 043 RND BH,OFH
16R4 02FF 1044 RDD BH,BH
16a6 02QF 104S aQD BL,BH : BL~BL~(2~BH~
16b8 02FF i046 RDD 8H,BH : 8H-2*C2~6H ! ) 16bR 02FF 1047 RDD BH,BH : BH~2*~*< ~eH)) 16ac 02DF 1048 RDD BL,BH : BL~6L~c~*BH !~2*C c*~: 2~6H !' 16~E 8700 1049 MOV 8H,0 : 58L~10*8H
16sn ss1E1Eq7 1050 MOV WORD FTR t81N~RY_LEQ~,BX
16e4 C3 1051 RET

10S3 ; ~*~****~*** LED ---~ VIEW TbBLE ***~*~*~****~***********~
1054 ;
es 8E1000 10SS LED VIEW TBL: MOV SI,VlEw cHaNNEL
1688 8700 10S6 MOV BH.0 168a 8a1E24o7 1057 MqV 8L,CCONV NO~
168E 8R268S07 10S8 MO~ aH~tMsB LEQ]
16C2 8820 10S9 MOV tSI~tBX~.~H L~st Ch~nn~ mor~J ~ r~ J
16C4 b08407 1060 MO~ bL,tLS8 LED~ ;
16C7 884008 1061 MOV tsI~t6xl8~aL
16Cb C3 1062 RET

1064 ***~**~**~** IF KEYIN THEN COTO B~SE_ROUTINE *****~**********~
106~ :
16CB ao8so7 1066 IF KEY CO BRSE: MOV aL,tKE- QbTb3 16CE 3C00 1067 CMP aL,TIMER OUT CObE
16D0 7404 1068 J~ TIMER_ON
16D2 5a 1 069 P0P DX

16D6 C3 1071 TIMER ON: FET
1072 :
~073 ****~**~**~** scaN Mod~ IJF Ch~nn~l S~rch ************~*~**~*~
1074 ;
16D. E8asFF 10~S DW_SC~N SEbQCH: CbLL VIEW TBL LED
16D~ E8B9FF 1076 caLL LED_BIN BX
16DD Es33FF 1077 CRLL CONV_BIT ~L
16E0 8E8001 1078 MOV Sl, B~SIC ~UTHO
16E3 FEC8 1079 URI: DEC sL
16ES soFsoo 1080 C~P BL,0 16Ea B86300 1082 MOV BX,99 16ED 8aEo 1 083 URI l: MOV ~H,RL

` ~ 300 1 338~4~

HEliLETT-P~C~.~PD: 8086 ~ss~nbl~r BOUR~E LINE
16EF 2220 1084 ~ND ~H,CSI~t6Y~ -16F1 74F0 1085 J~ URI
16F3 E96200 1086 JMP UD_CONV_DISP
'l~87 -1088 . ***~ * PCFC Mod~ ~Jp Ch~nn~l S~rch *****~ #~************
108-3 ~
16F6 E885FF 1090 DW_PCFC SE~RCH: C~LL VIEW TBL LED
16F9 E89~FF 10-31 CQLL LED_BIN_BX
16FC E814FF 1092 C~LL CONV BIT_~L
16FF BE0001 1033 MOV Sl,PC FC LIST
1702 FEC8 1094 UKI: DEC 8L
1,04 80FB00 1095 CMP BL,0 1,07 7503 10`36 JNZ UKIl 1709 BB6300 10g7 MOV BX~33 170C 8~E0 1098 UK11: MOY ~H,~L
170E 2220 1099 ~ND ~H,tSl~CBX~
1710 22R08000 1100 ~ND QH,tSI+123~CBX~

1716 E-33F00 1102 JMP UD_CONY_DISP

1104 ~ PCFC Mod~ Up Chann~l 5~3rch ~***~ ***#***~**
1105 , 1719 E862FF 1106 UP_PCFC_SE~RCH: C~LL VIEW_TBL_LED
171C E877FF 1107 C~LL LED_BIN_BX
171F E8f1FE 1108 C~LL CONV_BIT_~L
1722 BE0001 1109 MOV SI,PC_FC LI:;T
172S FEC3 1110 UMI: INC BL
1727 80fB64 1111 C~P BL,100 t~72~ 7203 1112 JC U~1 t72C 8B0100 1113 MOV BX,1 t72F 8~E0 1114 UMI1: ~OV ~H,~L
1731 2220 1115 ~ND ~H,tSI~tBX~
1733 22ao8000 1116 ~ND ~H,tSI11283CBX~

1739 E91C00 1118 JMP UD_CONV_DISP
1 1 1 ~ , 1120 , ~ BC~N Mod~ Up Ch~nnel S~3rch ***$***~****~'~**'~****
1121 ;
173C E83FFF 1122 UP_SC~N_SE~RCH: C~LL VIEL_TeL_LED
173F E854FF 11~3 C~LL LED_eIN_BX
174-2 E8CEFE 1124 caLL CONV BIT ~L
1745 BE8001 112S MOV S I,B~SIS ~UTHO
1748 FEC3 1126 UK~: INC BL
174~ 80FB64 1127 CMP BL,100 174F BB0100 1129 MOV 8X,l 1752 8~E0 1130 UKq1: MOV ~H,~L
17S4 2220 1131 ~ND QH,CSI~tBX~
17S6 74F0 1132 JZ UK~
1133 :
1758 EBCEFE 1134 IJD_CONV_DISP: C~LL EVENT_TO_B~SIC
1, se E80~00 1135 C~LL BI~DEC_LED
175E E854FF 1136 CaLL LED_VIEW_TBL
1761 E84,FD 1137 C~LL SPU_LEC_DISP
1764 E841FB 1138 C~LL GO_I:ON`'EP~TEP

1140 ;

301 1 3380~

- UEVL e Tr-PaC~aPD ôOQ6 a~
SOUPCE LlrlE
70~114 81NDEC_LED I~OV QU, O
l7~a -r~o~ u'Torl CnP rJL~lo l~ o :07 Il- JC rlaxo 1'~ F nE-Oa l l- i SUB BL, 10 1~-2 I rc7 I 1-~ INC BU
1''-- Fl-f~ , JNP XlTOrll ~30~ 1 14~ I~al~o~ 011 BX 3030U
17 a ~1--IE----07 1 1-8 NOV ILS-- LED3 8L
17~E --3EB507 Il--- lov lh5Q_LED3,QU
1782 ~ ET
SC;FC PC rlod~ Yr~ ax ~I S-t Su~u 1~83 EO-DFE 1 l ~ scFr~ps--nODE--ax! caLL SC_IlODE_ra ~7-~ 7~0~ J2 SaORI FCPr 1 7r38 ~ IOV aX, asC 11 SC t scal~ nr-~d-1 7-r c3 11~5 rE-11 :
17 C E-2rrE 1~- SaOPl_FCPC caLL rC_Cr~E_O_Ka ~711f 7~0~ Il~,- Jle saoPl FC
17~1 88~3~6 1~ hOV ax,asCII FC ~ ~ FC tlod-PE T
I lu~ ~
O I l - saoF l-pc I~OV ax ~ asc l l-pc ~ PC llod< 3 1750C3 ~1~. RET
Il~

I ~ r 1-- ..
~ r ~ t 1 _____ '-;
t~v OF~ ion . .~
l ~ l ~ 8907 1 811 XEV_OPEP~ITION NOV CL~ tKEY DaT
I 'TD 70r I ~-- POV BU ~ O
1~ alE2ra7 Il-~ ~v ~L.~C rJ~TE~
I l- aoD L ,L
E-nO3 I I - ~v Sl, JUl P_aDDRES;
a- ~c~ ov aX,Csl~lRx~
an PO.~C07 IIP~ Cr~ ax~ lT--po~uTi U~ N~n~F v.~: ~h~ ul~n-l .o ~af~ ~ JZ OP_I~llTlaL
Z80 XOF 03 1 18q CNP CL,O OFF_~Ev_CQDE
J~z op ~uoFrl~L - ~E;
I --~ EY7 01 11~ o Jrlp OP--sn~--OFF SPU Yo OFF Sur~nd-n~
1 1~1 ~
I;--B 50 Il- OP_NOFlaL_KEY PUS,U ax Oll,OFF r~t, 1~ nn Or~r-~ion 171J~ C3 Il~ ItET
Il~. I
I I--5 ~ T.~ T0 i I TOSNINO--QS-TOS~TNo-oS--TO51111-0-03-TOS~ltlO-oS-T~:S~lNo--OS-T051111 0--05--TOShlNO--OS--TOSN I

7--a 50~ 17 hEXT_CONTllUE ~or ax . ~_ 302 HEwLETT-P~CK~RD 81386 ~c~enbler 1338044 SOURCE LINE
17B8 B700 ll9S NEHT_OS MOV BH,0 178D 8~1E2807 1199 t~Y BL,CIC_B~TE~
17C1 02D8 1200 ~DD BL,BL
17C3 8E8003 1201MQV SI,JUt1P_~DPPES5 17C6 8900 1202 ~O~ ~BX~SI~,~X
17C3 C3 1203 RETIiRN_OS RET
1204 : ---------________________ 1205 ;
1206 ; SPU Initi~l O~ ~od-1207 ;
~208 ;
t7C9 8~0E8907 1209 OP INITI~L:MOV CL,tKEY D~T~ ;
17CD 80f913 1210 CMP CL,ONOFF_KE'i_CODE ; ;PU OFF
17D0 '511 1211 JN2 t1P_100_CK_001 , t~
17D2 E854FE 1212 C~LL EVENT TO BasIc : SPU ON
l.D5 EBBEFC 1213 C~LL SPU_VIE~_DISP

17G9 E~CDF~ 1? 1 S C~LL CO_C9NYERTER

17D8 E8D6FB 1217 W~KE~RI_DE_ON: C~LL SPU_REL~`t_ON ; !

17DE ~11PO, 1?19 t~OV ~X,tB~SE POINT~ ;
17EI EBD8 1220 Jt~P NEXT OS
t~21 ; ;;
1222 ;
!223 ~
17E3 80F911 1224 MP_100_CK_001: C~P CL,EVENT KEY CODE ;;
17f6 7524 122S JN2 t~P 100 CK_002:;
17EB e430 1226 - MO~ ~H,30H ;;
17E~ E8~DF8 1227 C~LL CONV S~ FL~G ;;
17ED 7402 1228 JZ C0~V_S~_OK_YO ;;
17EF e431 1229 coN~r-5l~i NG_'~O t~OY ~H,~lH ;;
17f1 ~02qO7 1230 CONY_Std_QK_Y~ MOV ~L,tDEVICE NO~ ;;
t7F4 0C30 1231 OR ~L,30H ;;
17F6 88268507 1232 nov tMSB LED~,~H ::
17F~ q28407 1233 t~OY tLSB_LED~,aL ::
l,FD ~02407 1234 ~OV ~L,tCONV NO~ :
1300 0C30 1235 OR ~L,30H
1802 FEC0 1236 INC ~L ::
1804 a28607 1237 MO'~ tHSB LED~,~L ::
1807 E84FFD 1238 C~LL SPU_LED_Q ~ST ::
IYO~ EBBC 1239 J~P RETURN OS
aoc 80F917 1240 MP_100_CK_002cnP CL,SEND KE'f CODE ;:
1 a OF 7587 1241 JNZ RETURN_OS ;;
1242 ;J::;::::::;:;; C~LL SPECI~L SPU 1 ;;
1811 EB8S 1243 JMP RETURN_OS ;:
1244 : ~
124~ :
1246 B-e Routine 1247 :
1248 :
1813 ~08907 1249 B~SE_ROUTINE ~OV ~L,tKEY_D~TP~
1816 E8EBF8 12S0 C~LL K~cUKO
1~19 7334 12~1 JNC R~NDqn_~ccEss 181B 3C10 1252 CMP ~L,PLUS KEY CqDE
181D 7S03 12~3 JNZ B~SEI
181F E92401 1254 JMP UP_C~NNEL_QP
.

` ~_ 303 1 33~44 HEWLETT-PQCKQRD: 8 oa6 Qss~nbl- r SOWFCE LINE
1822 3C11 1255 8aSE1: CMP aL~EvENT-KEt-coDE
1824 7503 1,S6 JN2 BQSE2 1826 E94703 1 2S7 JMP EVENT_KEt_ûP
1829 3C12 12S8 easEc CMP aL~QuTHo-kEy-coDE
1828 7S03- 12S9 . JNZ 8aSE3 182D Essao1 1260 JMP aUTHO_KE't OF
1830 3C14 1 61 BRSE3: cnP QL~nINus-KEy-coDE
1832 7503 1262 JNZ 8asE4 1834 E~a701 1263 J~P DO~N_CH_OP
1837 3C15 t_64 BQSE4: CMP QL,SCQN_KEY_CODE
1838 7S03 1~6S JNZ BQSES
1838 E91502 1~66 JMP SCQH KEY oP
1a3E 3C16 1~67 BaSE5- CMP ~L,CLEQR_KEY_CODE
1840 S03 1268 JNZ sasE6 1842 E9sco2 ~69 Jrp CLE~R_KEt oP
184S 3C17 1270 BaSE5: CMP aL,SEND_KEY CODE
184? 7503 1271 JNZ 8asE7 1849 E9aBo2 12-2 J~P SEND_KE-t OP
184C E98400 1~73 88SE-- Jnp NEXT_ENb , ZOOOOOOOO~a~aO~a~a~Ol~a~aOOO~O~OGOIa~ JIa~
1274 ;---~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
127S :
1276 ; R~ndom Qcc~s Routin~

~278 , - ---_-----_______________ 184f 8700 12-9 R~NDO~_QCCESS: ~OV 8H.. 0 18S1 8a1f2807 1280 ~OV BL, CIC 8YTE~
1855 8BF3 1281 MOV Sl,8X
18S7 E86406 - 12a2 CQLL KE~_BUFF_QDRS
185~ 8B00 1283 ~OV tBX~CS51,QL
1284 ;
185C q28507 128S MOV CMS8_LED~,aL
185F B088 1286 nov aL,88H : Lse =
1861 ~28407 1287 MOV CLS8_LED~.QL
1864 E87EFC 1288 C~LL SPU_LEb_D I SFL
1867 E8E8FD 1289 CQLL tl~ER_S_SEI:
12~0 , 186a E84DFF 1291 C~LL NEXT CONTINUE , ttt K~ Input W.3it 3 1292 , 186D ao8~07 1293 ~ov aL~cKEy-DaT~
1870 Es81F8 12q,4 CaLL KaZ~JKO
1873 7264 12ss JC RaNDO~ OUT
187S B700 1 ~,q6 ~OV eH~o 1877 8a1E28o7 1297 ~oV BLJclc-grTE~ ;
1878 sBF3 1cq8 ~ov 51,8X
18,D E83E0B 1299 caLL KEY_BUFF_QC~RS ~ ~H = t 13t KEY
1~0 8a~0 1300 ~oV aH,CSl~CBX~ : aL = t ~-:E _t~aTa 1301 ;
1832 Q25407 1302 MOV tLSB_LED~,QL ~ LED D
1~5 ~268S0. 1303 MOV C~SB_LEt~,aH
1889 E83206 1304 CaLL KEr BUFF QDRS
18ac 894004 130S ~OV tS11tBX~4~.QX ; .
1~BF E819FC 1306 C~LL SPU_LED_DISP

1892 E801FE 1308 CaLL LED_BIN_BX
189S E81sFD 1309 CQLL aUTHO KQI
18g8 747D 1310 J WT_NO_WT_END
- 1311 , ~ 1 338044 ~EuLETT-P~CK~PD 9 086 ~ ~bIcr SOUPCE LINE
18~a E836FD 1312 C~LL SC_~ODE_K~I
1s9D 752B 1 313 JNZ TUNE SURU
1ssF E81CFD 1314 C~LL PC_CODE_O_K~S
18a2 7426 1315 J' TUNE SURU

Isa4 E8EFFD 131~ CaLL LED BIN BX, : PC nod~ D~;- PC-~p ~i ~ruk~
18~7 EB69fD 1318 caLL CONV_B I T aL
Isaa BEOOOl 1319 ~ov Sl,PC FC LIST
saD 2200 1320 aND aL~sI~cB
IgaF 7519 1 21 JN2 TUNE_SURU
13Z2 :
1881 E8730S 1323 CaLL aNw - INPUT
1sB4 EB2E06 1324 caLL aNGo BIN DX
1887 E821FD 1325 caLL PC CQDE bDRS
188~ 3B1O 1326 C~P DX,tSI~tBX~ ;
18BC 7S24 1327 ONZ nscERR UT END IF PC COGE <> lnput Cc.d~ T~er. PC Cortrol IggE EsFDoS 1328 caLL KEY BUFF aDRs ~ -18~1 8B4004 1329 ~Ov ax,~SI~tBx~4~ :
18C4 a38407 1330 nov cLse LED~ax Isc7 EsE 1 FB 1331 caLL SPU_LED_D I SP
1332 :
18ca EsSCFD 1333 TUNE_SURU C~LL EVENT TO_BaSlC
1334 ;
IgCD EsEsFD 133S caLL LED viEu TBL
1336 ;
,18DO E81CF9 1337 C~LL RU~ C0NvERTEC

IBD3 a1lao~ 1339 NEXT_EIID ~OV ax,~B~5E POINT
IBD6 E9E2FE 1340 Jnp NEXT OS
1341 ;
18D9 3C16 1342 RaNDon-ouT cnP aL~cLE~R-KEy CODE
18D8 7505 1343 JNZ ~SCERP VT END
18DD EBB6FB 1344 caLL SPU VIEU DISP
18EO E8F1 134S J~P NExT END
1346 ;
18E2 887245 1347 ~SCERR_~T_END ~Ov ax~asclI EP
aE5 E8BCFB 1348 ~SC_UT_END: caLL SPU_LED_bX
sE8 EssBFt~ 134q ~bIT-ENr caLL TInER-l-sEc 13~0 ;
Ee E8CCFE 13S1 IF - TI~E01JT - END: CaLL NExT CONTINUE

laEE ao8907 13S3 ~ov bL tKEY D~Ta~
18F1 3C00 13S4 cnP aL TlnER_oUT_CoDE
F3 7403 1355 JZ RaNDOn ~ODOR I
sFs E9 I BFF 1356 J~P BaSE ROUT I NE

sf8 ~08007 1358 RaNDon_~ODORI nov RL,~NOV EvE~T~ ;
sFB 84062E07 1359 TEST aL,~CO~v ~o BlT~ :
I~FF ~505 1360 JNZ EVENT ~OPQPI
1qOl Esg2FB 1361 caLL SPU_~IEU DISP
1904 EBCD 1382 J~P NEXT_END
1906 BE3000 1363 EVENT nQPORI ~ov Sl,EvENT CXbNtlEL
1909 03362407 1364 aDD Sl,tCONV NO~ ;
IqOG sslc 1365 ~OV BX ~SI~
1qOF E8S6FE ! 366 C~LL BiNDEC LEG
1912 E896FB 1367 caLL SPU LEG DISP
1915 EBBC 1388 J~P NEXT_END

HE~LETT-r~CKaRD 8056 ass~bl~r SOURCE LINE
136~

1917 E82CFD 13?1 VT_NO_~T_END C~LL TlMEv_l_SEC
137t ;
191~ E89DFE 1373 CPLL HEXT_CQHTINUE
137~ ;
191D ~08907 1375 ~OV ~L,CKE~ D~T~
192Q 3C00 1376 ChP ~L,TIhER_OUT_CODE
1-22 7-03 1377 JZ ~SC_NO_VT_END
1924 E9ECFE 13?8 JnP B~SE_ROUTINE
27 88DCD4 1379 hSC NO VT END hOV ~X~aSCll_NO I S~c ~Ho 19Z~ E889 138Q JhP NSC_UT_END
1~81 138~
'38~ ~ ________ 1387 SPU OFF K~y Op~r-tion 1389 - -_____________ 192C E8~F~ 1390 OP_SPU_OFF CPLL SPU_RELaY_OFF
192f E862F~ 1391 C~LL SPU_CLE~R_DISV
1932 E8EEF~ i392 C~LL EVENT LED QFF
1393 ~.
1935 ~11C07 1394 NOV ~X,CINIT POINT~
1938 EB80FE 1395 CPLL NExT-os Kor~u- T~nn~ru Junbid~-ri H-d~ OS ni~-modor~n 1938 E8~CF9 1396 C~LL STP_COHVERTER
193E 7203 1397 JC HaK
13~8 19 0 E8~2f8 1399 C~LL CONV P OFF CMD
1400 _ _ 1943 E982FE 1401 ~KI J~P RETUPN OS hodoru Junbi~ Shit~-runod~ R~urn 1~02 1~03 140~
~05 1~06 __________________________________ 1~07 1408 UP Ch~nn~l 'h-n~
1~09 I~10 : ____________________________________ 19~6 E8C~FC 1411 UP_OH~NNEL OP C~LL COHV elT GL
194~ 22Q60E00 1412 ~ND ~L~ N-hoDE-FL~G~

19~F E8E~FD 1415 UP_SC~N C~LL UP SC~N SE~RCH
1-52 E8E~FC ~416 C~LL TlhER Q5_SEC
1~17:
1955 E862FE 14'8 C~LL NEXT CQHTINUE

1958 ~0890? 1420 hOV ~L,CKE~_D~T~
1958 3CQQ 1421 CMP ~L,TIME~ QUT_CODE
19~D 75~ '422 JHZ UP_DO~N EXIT U D Suou H~n-c~t~

1 ffF E814F~ 1424 UKQ C~LL SPU ST~TUS_PEO
1962 E8EOFC 1425 C~LL TlhEP_l!D_SEC

1 33~44 ` ~_ . 306 HEULETT-P~CKdRD æoæ6 dc3~bl~-~
SOUPCE LINE
1420 ;
1965 E8S2FE 1427 CRLL NEXT_CONTINUE
1428 ;
196~ dO8907 1429 MOV dL,tKEY DdTd~
196B 3C1C 1430 CMP aL ~ KEY_PUSH_CODE
196D 7548 1431 JNZ UP DOWN EXIT : KDY Releacc ~r ~n~ther k'e~
196f E8CdFD 1432 CdLL UP_SCdN_5EdRCH
1972 E8BEFC 1433 CPLL TIMER_02_5EC
1434 ;
1975 E842FE 1435 CdLL NEXT_CQNTINUE
1436 ;
1978 R08907 1437 MOV dL,tKE;_DdTd~
197B 3C00 1438 CMP PL,TIMER_OUT_COGE

197F E93500 1440 JMP UP_DOWN_EXIT : dnother ~e~,~

1442 ; *~*~*~** PC-FC Mod~ ~ *~*~**~*~*~*~*~ *~~-~~
1982 E862FC 1443 UP_PCFC C~LL PCFC_M~P_dPUKd 198g 7240 1444 JC UP_NO_MdP
144S ~
1987 E8aFFD 1446 CdLL UP_PCFC_SEdRCH
19~,d E8B2FC 1447 CdLL TIMER_05_SEC
1448 :
198D E82aFE t449 CdLL NEXT_CONTINUE
- 1450 ;
1990 ao8907 1451 ~OV dL,CKEY_DdTd~
1993 3C00 1452 CMP dL,TIMER_OUT_CODE
1995 7Y20 14S3 JNZ UP_DOWN_EXIT
1454 ;
1997 E8DCF9 1455 Yd5UKO CdLL SPU_5TdTUS_REQ
19~a E8a8fC 14So CdLL TIMER_UD_8EC
~ 14S7 :
199D E81aFE 1458 CdLL NEXT_CONTINUE
14~g ;
19QO dO8907 1460 MOY dL!tKEY DdTd~
19~3 3C1C 1461 CMP RL,KEY_PUSH CODE
1~dS 7S10 1462 JN~ UP_DOWN_EXIT
19R7 E~6FFD 1463 C~LL UP_PCFC_5EdRCH
19~ E8a6FC 1464 CdLL TlMER_02_5EC
~40S :
19dD E80dFE 1466 CdLL NEXT_CONTINUE
t467 ;
19EO dO8907 1468 MOV dL,tKEY DdTd~
19B3 3C09 1469 CMP dL,TIMER_OUT_CODE
19CY 74E0 1470 JZ YaSUKO
1471 ;
1472 ;
1907 dO~90 1473 UP_DOWN_EXIT: MOV QL,tKEY_DdTd~
19ed 3C00 1474 CMP dL,TIMER_OUT_CODE
1 sec 7506 1475 JNZ MIKd 19t3E E9DSFd 1476 CdLL SPU VIEW_DISP
19C1 E828F8 14r7 CdLL RUN_CONVERTER
19C4 E94CFE 1478 MI~d J~P t3dSE_ROUTINE
1479 ;
19C7 E95DFF 1480 UP_NO_MdP JMP MSG_NO_~T_END
14al 1482 :

HEWLETT-F~CK~RD: C086 ~ss~bl~r SOURCE LINE
1483 :
1484 ; ~dding Channel~ t.~ t~ FC,PC Li~t 148S ;
1-186 ;-----~~~~~~~~~~~
19~P E8B1FC 1497 ~UTHO_~EY_OP CPLL YIEW_TBL_LED
1gCD E9C6FC 1488 C~LL LED_81N_BX
19D0 BE0001 1489 MOV SI,PC_FC_LIST
1~G3 E93DFC 1490 C~LL CONY_BIT ~L
19D6 0800 14g1 OR tSI~CBX~,~L
1~D8 886441 1492 MOV ~X,~SCII_~D
19DB E907FF 1493 JMP MSC-~T-ENrJ
14~4 : -- -_-_-__--_________________________ 1495 ;
t4g6 ; Do~n ChanneL Ch~n~e ,- 1497 ;
14~8 -------____--___________________________ 19DE E832FC 1499 DOWN CH OP C~LL CONY BIT ~L
19~1 22060E00 1500 ~ND PL,tSC~N_MOr!E_FL~G~

1S02 :
19E7 E8EDFC 1S03 D~ SC~N: CPLL DW_SC~N_SE~RCH
1gF~ E8S2FC 1504 C~LL TIMER_05_5EC
tSOS:
19ED E8C~FD ~S06 CPLL NEXT_CONTINUE

19F0 ~08907 1508 MOY ~L,CKEY_D~T~
19F3 3C00 1S09 crtP ~L,TIMER_OUT_CODE
19FS 7S20 1~10 JN2 DOWN_EXIT

19F7 E87CF9 1S12 EIKO C~LL SPU_ST~TUS_REQ
19Fa E848FC 1513 CPLL TIMER_UD_SEC
,1514 ;
1gFD E8B~FD 1515 CPLL NEXT_CONTINUE
1S16 ;
1~00 ~09907 1S17 MOV ~L,CKEY_D~T~
1~03 3C1C 1S18 CMP ~L,KEY_PUSH_CODE
t~OS 7S10 1519 JN2 DOWN_EXIT
1~07 E8CDFC 1S20 C~LL DW SC~N_SE~RCH
1~0~ E826FC 15Z1 C~LL TIMER_0._5EC
1522 ;
1~OD E8~FD 1S23 C~LL NEXT_CONTINUE
1524 ;
1~10 ~0890, 1525 ~O ~L,tKEY_D~T~
1~13 3C00 1526 CMP ~L,TIMER_OUT_COGE
1~1S 74E0 1527 0Z EIKO
1~17 EB9E 1528 DO~N_EXIT JMP UP_DOWN_EXIT
152g ; ~ PC-FC ~o~ie ~**~*****~*~*****~****~ *~~ k~*:~*.
1~19 E3CBFB 1530 DW_PCFC C~LL PCFC_Y~P_~RUK~
1~1C 7232 1531 JC DW_NO_M~P
1532 ;
1~1E E8D5FC 1533 C~LL DW PCFC_SE~RCH
1~21 E91BFC 1534 C~LL TIMER_05_5EC
1S3S ;
1~24 E893FD 1536 C~LL NEXT CQNTIN1JE
1537 ;
1~27 ~08907 1S38 MOY ~L,tKEf D~T~3 1~2~ 3C00 1539 C~P ~L,TI~ER_OUT_COGE

.

~ 1 33~044 HEULETt-P~CK~RD 8086 Q~on~
SOUPCE LINE
a2C 75E9 1540 JNZ DOUN_EXI T
1~2E E845Fs 15~2 KEIKO C~LL spu-sTaTus-REQ
1a31 E811FC ~543 caLL TI~ER_UD_SEC
1~44 1~34 Es83FD 1S45 C~LL NEXT_CONTINUE
~46 1~3 aos907 154? HOV aL~tKEy-tlQT~
1a3a 3ClC 1548 C~P aL~KEy-pusH-coDE
1~3C 7SD9 15~9 JNZ DOuN_EX I T
1~3E EBB5FC 1550 C~LL DL_PCFC_SEPRCH
1~41 EsEFFB 1551 caLL Ti~ER_02_5EC
1552 ; C T E
1a44 E873FD 1553 caLL NEXT_ ON INU
1~54 ~a47 ao8907 155S ~ov aL~t~EY t~T~
1a4~ 3C00 1556 C~P aL~Tl~ER-ouT-coDE
1~4C 74E0 15S7 Jz KE I KO
a4E EBC7 15S8 J~P DOuN_EX I T

l~SO E9D4FE 1550 Du_NO_~QP J~P ~SG_NO_uT_END

156~
~566 1S6~ -__ 1S68 ;
1S69 SC~N K~y Op~r-t ion 15~1 - _ __________ _______ 1Q53 Es2DFD 1S72 SC~N_KEY_OP C~LL SCFCPC_~ODE_QX
1as6 E84BFa 1573 caLL SPU_LED_~X
1ass EsF6F3 1574 CRLL TInER-5-sEc 15~5 ~
aSC E8SBFt! 1576 C~LL NExT-coNtI~uE

1~SF ~08907 1578 ~O- aL~tKEy-DoTa~
1~62 lC00 1579 C~P aL~TI~ER- W T_C0DE
a64 7S03 1580 JNZ SC~N-~FTER
1Q66 E9sFFE 1581 J~P R~NDOh ~ODORI

1a6q 3C1S 1583 scAN-aFTEF C~F aL SC~N_KEY_COt`E
1~68 7539 158~ JNZ SC~H_~NOTHER
1~6D E84EFB 1586 SC~N_SC~N C~LL PC_C0DE_0_ 1a70 7410 1587 JZ SS_FC_PC_xSHC

1~72 Ess203 1589 CPLL ~NCO_INPUT
1~7S Es6Do4 1590 C~LL aNGo-BlN-Dx 1a78 E860FB 1591 caLL PC_CODE_a8Rs 1a7B 3B10 1592 c~v Dx tsI~ts 1~7D 403 1593 JZ SC_FC_PC_XCHC ; IF PC CODE ~ Inp~t So~ Th~n PC_E~

1~7F E560FE 1595 J~P xsGEFR-~T-ENr 1~96 . . .
HEwLETT-PaCKaPQ 8086 a~.en~Ier SOURCE L I NE
Ia82 E88EFB l~g7 SC_FC_PC_xCNC: caLL CONV BIT aL
a8s 30060Eoo 1598 XOR tscaN ~OQE FLac~L
aos 22060E00 1599 ~ND aL~tscaN-~oDE-FLaG~
laeD 7406 1600 JZ E~l TO FCPC
la8F B8~353 1601 E~I TO SCaN: ~OV ax~ascll SC
l~g2 E9SOFE 1602 J~P ~SG_WT_ENQ
l~9S E826FB 1603 E~I TO PCPC: caLL PC CODE o Ka tas8 7S06 160~ JNZ EnI TO PC
aga tte~3~6 1605 E~l TO_FC: ~OV aX,aSCII_FC
asD E94SFE lo06 J~P nSC_UT_END
aao Be~3s0 ~O07 E~I TQ PC: ~OV aX,aSCII PC
ab3 E93FFE 1O08 Jrp nSG WT END
~oO9:
1610 :
1611 :
laa6 3C12 1612 SC~N ~NOTHER: C~P aL~auTHo KEY SODE
ab8 7403 1613 JZ PC_CODE_XCHG
aaa E966FD 1614 J~P BaSE ROUT I NE
161~ _ 1616 : IF PC CODE ~ o THEH ~NEW~ ELSE ~NSHQ-KEY-IN
1617 :
~aD E80EF8 1618 PC CODE XCHG: CaLL PC CODE 0 Ka aBO 740D 1619 J. NEw Pc CODE
t620 :
la82 E87203 1621 C~LL aNGo-lNpuT
aBS E82D0~ 1622 caLL aNGQ BIN DX
88 Ee2OFB 1623 CaLL PC_CODE ~DRS
1~88 3810 162~ C~P DX,t51~tBX~
1~8D 7SlF 1625 JNZ PC_CODE_ERR ; IF PC_CODE <> Input Coae Then PC Erro 1626 :
-t~BF EBCE02 1627 NE~ PC CODE: CaLL aNCO TOUROKU
aC2 E87~FB 1629 : caLL TI~EP_OS_SEC
l~C~ E8F2FC 1630 caLL NEXT_CONTINUE

aCs E853 04 1632 CaLL aNGo DISPLaY
aCB 7303 1633 JNC NE4 PC SET
aCD Esl2FE 163~ JnP nsCERR_~T_END
163~ :
-laDO E81204 1636 NE4_PC_SET: caLL aNGo BIN DX
aD3 E80SFB 1637 caLL PC CODE ~DRS
aD6 e~lo 1638 nov tSI~t8X~,DX
1639 :
laD8 B85~1 1640 nov ax,ascIl au laG8 E907FE 1641 J~P nSC_wT_END
1642 :
16~3 :
~DE E9QIFE IO4~ PC_CODE_EDR: J~P NSCEPP_WT ENQ
1645 : - - -----_______________________________ 16~6 :
16~7 ~ DeIetlng C~nncls ~non t~e FC,PC Llst 16~8 :
16~9 : --------________________________ aEI E89~FB 1650 CLE~R KEY oP: caLL VIE~I TsL LED
laE~ EBaFFB 16SI caLL LED BIN Bx lQE7 sEoool 1652 ~ov Sl,PC FC_LIST
laEa E82OFB ~653 C~LL CONY BI T ~L

~-- 310 1 33~44 HEWLETT-F~CK~RD: 8086 ~s~bl~r SOURCE LINE
1qED 34FF 16S4 :¢OR ~L,OFFH
l~EF 2000 165S ~Nt) C5}3tB~ L
16~6 ;
l~fl B84564 16S7 MOY ~X,~SCII_DE
I~F4 E9EEFD 16S8 J~P MSG_~T END
16 g , ----------___________.
1660 ;
1661 ~ S~nd K~y Fuhction 1662 :

l~F7 B84553 1664 SEND KEY OP: ~OV ~X,~SCII_SE
l~F~ E8~7F9 166S C~LL SPU_LED_~X
1666 ;
1~FD E813F8 1667 C~LL CON-_BIT_~L
1800 22063Q08 1668 ~ND aL,tSEND_EN~ELE~
1Ba4 7S03 1669 JNZ SEND_K;OK~
IB06 E90EFE 16,0 JMP WT NO IdT_END
1671 ;
1809 E846FB 1672 SENC_KYOK~: C~LL TIMER_5_SEC
1673 :
180C E8~BFC 1674 C~LL NEXT_CONTINIJE
167S ;
lBOF ~08907 1676 MOY aL,CKEY C~T~
IB12 E8EFF5 1677 C~LL K~ZUKO
lB15 7303 1678 .)NC SETUKO
1817 E9BFFD 1679 JMP R~NDOM OUT
1 B 1 a ~ ~8407 1680 SETUKO: MOY CLSB_LED~,~L
1B1D 8~1E3308 1681 ~ MO~ BL,tSENC_INCEX~
1B2t 80FB80 1682 CMP BL,SEND M~X
1~24 7203 1683 JC T~MIKO
1B26 E9EEFD 1684 T~rtI: JMP WT NO_4T_END
1B29 B420 1685 T~rtIKo: ~O~ ~H~OH
1B28 88~68507 1686 MO~ CMS~ LED~.~H
1B2f E88C03 1687 C~LL KEY_BUFF ~DRS
IB32 ao8go7 1688 MOV ~L~CKEY_C~T~
1B3S 8800 1689 ~OV CSI~CBX~!~L
lB3, E8~BF9 1690 C~LL CPU_LED_DISFL
1B3~ E81SFB 1691 C~LL TI~ER_5_5EC
1692 ;
1B3D E87~FC 1693 C~LL NEXT_CONTINUE
16,q~ ,~
lB40 ~0890- 16,qS MOY ~L,CKEY C~TA~
1B43 3C16 1696 CMP ~L,CLE~R_KEY_COC`E
1B4S 74eo 1697 JZ SEND_KEY_OP
lB47 3C12 16,q8 CMP ~L,~UTHO_KEY_CODE
1B49 75DB 169,q JNZ T~MI
1700 ;
184B E87003 1701 C~LL KEY_BUFF_~DRS
lB4E 8~00 1702 MO~ ~L~CSI~C6X~
1650 BE3S08 1703 MOY 5I,5ENC_Q~T~ 6UFF
IBS3 B700 1704 MOY BH,0 lBS5 8~1E3308 170S ~OV BL.CSEND_INCE:~
1B59 8~262807 1706 MO~ ~H,CIC_BYTE~
IBSD 886001 1707 MO~' CSI~CBX~ H
1B60 884002 1708 MO~ ~SI~CBXl^~.~L
1B63 80C302 1709 ~DD BL,2 lB66 881E3308 1710 ` MO~ CSEND_INDE:~.BL

~_ 311 1 338~44 - HEWLETT-P~CK~RD: aoa6 ~s~e~bl~r SOIJPl:E LINE
1711 ;
rB6~ B8S541 1712 ~OV ax ~ ~sc II_~U
tB6D E97SFD 1713 J~P MSG_WT_END

~715 : ------_________________________ 1716 ;
1717 ; Ev~n~ Kcy Op~ration 1718 ;
171g ----_____________ _______________ tB70 E84BF~ 1720 EYEHT KE7' OP: C~LL PC CODE 0 K~I
tB73 7410 ' 1721 J7 EY PC_OK `fO
1722 ;
lB75 E8~fO2 1723 C~LL ~NGO_INPUT ; PC Code Input.
IB79 E86hO3 1724 C~LL ~NGO_BIN_DX
lB7B E8SDF~ 1725 C~LL PC_CODE_~DRS
1B7E 3B10 1726 C~P DX,tSI~tBX~

1882 EgSDFD 1728 EVENT_ERR: JMP MSGERR_WT_END

tB85 1730 ÉV PC OK YO: ; Event Enable ' tB65 B87250 1731 ~OY ax ~ ~ sc II_PR
lB88 E81gF~ 1732 C~LL ~PU_LED_~X
le8e E8e8F~ 1733 C~LL TI~ER_1_5EC
~734 :
lB8E E82gFC 1735 C~LL NEXT_CONTINUE
1736 ;
tB91 E86601 1737 C~LL YOY~KU SE~RCH
IB94 7203 1738 JC Y_H~JIME
lB96 E9C600 1739 J~P FORCED EVENT
1'40 ;
1~99 B87250 1741 Y_H~JIME: MOV ~X,~SCII_PR
le9C E80SFg 1742 CRLL SPU LED ~X
lB9F E8B6F~ 1743 C~LL TIMER_10_5EC
1744 ;
tB~2 E815FC 1745 C~LL NEXT_CONTINUE
1746 ;
lBaS ~09907 1747 ~OY 4L,tKE'f_D~T~
lB~8 E91100 1718 J~P EVENT_tST_KEY
174g ;
1B~B E8~aF~ 17S0 EVENT_KE'f_~IT: C~LL TIMER_10_5EC
17Sl ;
lB~E E80gFC 17~2 C~LL NEXT CONTINUE
17S3 ;
lBBl ~0q907 1754 ~OV ~L,tKE'7'_D~T~
18B4 3C12 1755 C~P ~L,~UTHO_KE'7'_COCE
lBB6 742D 1756 J2 EVENT ~UTHO
leB9 3C16 17S7 CMP ~L,CLE~R_KEY_CODE
lB8~ 7432 17S8 J2 EVENT_CLE~R
lBBC 3C10 17S9 EYENT_lST_KEY: C~tP ~L,PLUS_KE'f_CODE
lBBE 7441 1760 JZ EYENT_PLUS
IBCO 3C14 1761 CMP aL,~tINU5_KEY_CODE
lBC2 7443 1762 J2 EVENT MINUS
IBC4 3C00 1763 C~P ~L,TI~ER_OUT_COGE
lBC6 74OB 1764 JB EVENT_T_OUT
leC8 3C11 176S C~P ~L,EVENT_KEY_CODE
t8CP 740~ 1766 JZ E~ENT_EVENT
lBCC E835F~ 1767 C~LL K~ZUKO

~ 33~ 4 ~ 312 HEWLETT-F~CKRRD: 8086 2s5~nbl~r . SOUFCE L I HE
I BCF 733E 1768 JNC R~NDOY YOY~KU
1sD1 EBaF 1 76g J~P EVENT ERR
1770 ;
1BD3 E922FD 1771 EVENT_T_OUT: J~P RaNDo~ ~ODORI
1772 ;
1sD6 EssoFa 1773 EYENT_EVENT: caLL EYENT_TO_BQSIC
18Ds Esa2Fq 1774 caLL VIEW TsL_LED
1BDC E81OF6 177S CQLL RUN_CONVERTER
1BDF E8CgF8 1776 CdLL SPU_LED_DISP
~B2 E9EEFC 1777 J~P NEXT_ENQ
1778 ;
1Bs E8B600 1,79 EVENT_dUTHO: CdLL KE~YdKU : F3y Ch3nn-l Shinki K~iylku 1BE8 B85S41 1780 ~Ov dX,~SCll_aU
1BEB E9osoo - 1781 J~P EVENT_~SC
~82 ;
1BEE E8C800 1Z83 EVEhT CLEdR: CaLL KdIYdKU
1BF1 7319 1784 JNC EVENT_NO
1BF3 B84s64 1785 ~ov ~x,asc I l_DE --1BF6 E8aBF8 1786 EVENT_~SC: CALL SPU_LED_dX
1sFs E84aF~ 1787 caLL TI~ER_1_SEC
~788 ;
1BFC E8BBFB 1789 caLL NEXT_CONTINUE
17~0 ;
1BFF EB84 1791 J~P EY_PC_OK_YO
1 7g2 ;
1C01 E80~01 17~3 EVENT_PLUS: CdLL UP_~tOYdKU
1C04 E90300 17g4 J~P EVENT_UD
1C07 E84E01 17~5 EvENT ~INU~: CdLL DoUN_YOYaKU
1C0~ 73S3 1796 EVENT_IJD: JNC FORCED_EVENT
1C0C Eg18FD 1,q7 EYENT_NO: J~P ~SG_NO_WT_END
~ 1~8 :
1COF B740 17~9 RdNDo~ oyaKu: ~Ov BH,0 1C11 8R1E2807 1800 ~Ov eL~cIc-ByTE~
1C15 8BF3 1801 ~ov SI,BX
1C17 E8a402 1.802 caLL KEy-BuFF-aDRs 1c1a 8800 1803 ~Ov tBx~s~aL
1804 ;
1C1C ~285 07 1 805 ~Ov tMSB LED~aL
1C1F Boæs 1806 ~Ov ~L,88H .. LSB =
1C21 a28407 1807 ~OV tLS8_LED~,dL
1C24 E8F8F8 1808 caLL SPU_LEG_FLdSH
1C27 E828Fa 180~ CdLL TI~EP~_5_5EC
1810 ;
1C2~ E88DFB 1811 C~LL NEXT_CONTINUE ; ttt K~y Input W1i~, ]~]
1812 ;
1C2Ci aoæ~o7 1813 ~OV AL,CKEY QdTd~ -1C30 E8D1F4 1814 caLL KRZUKO
1C33 7219 - 1815 JC IRG_YOY~KU
1C3S B700 1816 ~ov BH,0 1C37 Ba1E28o7 1817 MOV BL,tIC_BYTE~
C3B 8BF3 181B nov sI~sx IC3C~ E87E02 181~ caLL KEY_BUFF dDRS : dH = t 1,~ KEY
1C40 8~20 1820 ~OY dH,tSI~tBX3 : dL = t KEY_DdT~
1C42 d28407 1822 ~ov tLSB_LED~,QL : LEG Gi pl~y C4S 88~6850, 1823 ~Ov t~SB LED~aH
c4s Es7202 1824 caLL KEY_BUFF_dDRS

~ 313 1 338044 HEI~LETT-P~CK~RC~: 3086 ~e~b I cr SOu~CE L I NE
1C4C 894004 1825 nnv cs~csxl4~,~x 1-C4F E8CDF8 18~6 C~LL SPU_LED_FL~SH
1CS2 E841F~ 18~7 C~LL LED_BIN_BX
~828 ;
1C5S 8B362807 182 ~ov SI,CIC_B'tTE~
1C59 81C6000~ 1830 ~DD SI,HELP
sD 881C 1831 nov CSI~,BL
~832 ;
1CSF E83000 1833 FORCED_EVENT: C~LL EV_FREQ_~DRS
1C6. 833C00 1834 cnP UORD PTR CSI~.0 1C6S 7417 1835 JZ IRG YOYaKU ~ Hou~ F,3~t~im~i~n 1C6~ s33co1 1836 C~P UORD PTR CSI~
1C6~ 740C 1837 JZ EVENT_RT1 1-~38 ~
1C6C E86D00 , 1839 C~LL P~Y CH nIRU ; ttt P3-,~ Ch.~nr,~l TIJnin.3 ~]i 1C6F E839F8 1840 C~LL SPU LED DISP ~ ttt P3y 1C72 E8OE01 1841 C~LL EVENT_BIN_TBL
1C7S E933FF 1842 J~P EVENT_KE't_U~I T
1843 ;
1C78 E8~4F8 1844 EYENT_PTl: C~LL SPU_LED_FLaSH
1C7B E92DFF 1845 Jnp EVENT KEY_4~I T
1846 , lC7E E996fC 1847 IRC_YO'f~KU: Jnp UT_~0_4T END
184B ;
1~49 t~ttt~tt~t~t SI = ES E-~ENT_TInER ~ tCONV_NO~ # 128 ~ Ch~nn~l 1850 ;
IC81 8B362407 1851 ES_P~Y_ST~TUS: nov SI,tCONV_NO~
IC85 B107 18S2 ~OV CL,7 1C~7 D3C6 18S3 ROL SI,CL
1C89 81C60006 1854 ~DD SI,ES EVENT TInER r Timcr ~ r~,~
1C~D 03361E07 1855 ~DD SI,tBIN~RY LEDI : Ch~nn~l 1C91 C3, 1856 RET

IC92 BE0009 18S8 E~_FREQ_~DRS: ~OV SI,EVENT_NO_FREQ
IC9S 03361E07 - 1%59 ~DD sIrtBINaRy-LED
1C99 03361E07 1860 ~DD SI,tBtN~R't LEC~

1 86? J
1CE 8B36280- 1863 KEIY~KIl: ~Ov sI~tIc-eyTE~
IC~2 81C6000~ 1864 ~DD SI,HELP
1ca6 ~alC 1865 nnv BL,tSI~
1C~8 B700 1866 nov BH,0 IC~a 891ElE07 1867 nov tBIN~RY LEtj~.BX
lC~E E8DOFF 1868 'C~LL ES_PaY_ST~TUS
1C81 268024F8 1869 aND 8YTE PTR ES:tSI~,0FBH
lCBS ~02~07 1870 MOV ~E, t DE~.~ICE_NO~
lC88 260844 1871 OR ES:tSIl,~L

ICBC 8B362807 1873 KPIY~KIJ: ~Ov SI,tIC_BYTE~
1CC0 81c6oooa 1874 ~DD SI,HELP
1CC4 8R1C 1875 ~Ov BL,tSI~
1CC6 B700 1876 nov BH,0 lCC8 891EIE07 1877 ~OV tBIN~RY LED~,BX
1CCC E8B2FF 1878 C~LL ES P~Y_ST~TUS
1CCF 268J3CF8 1879 CnP BYTE FTF ES:tSI~.OF8H
1CD3 306 1880 JNC K~IYaKU ERR
1C~5 268024F8 1881 aND BYTE PTR ES:tSI~,0F8H

~-- 314 1 33804~
HEWLETT-P~CK~RD: 8086 ,~em~ler SOURCE LINE

lCD~ C3 1883 RET
lCDB C3 1884 KaIY~KU ERR: RET
188~ ;
lCDC E8R2FF 1886 P~Y CH MIRUI CaLL ES_F~t_STATUS
lCDF B480 1887 MOV aH,80H
lCE1 26803CF8 1888 CMF BYTE FTR ES:tSI~ OF8H
1CES 7202 1889 JC HaTU
lCE7 B4CO 1890 MOV ~H,OCOH

lCE9 Oa262Eo7 1892 HaTUI OR aH,tCONV_NO_BIT~
lCED 8026800,3F 1893 aND BYTE PTR t~OI,J_E'.'ENT~.3FH
1CF2 08,680~7 1894 OR tNOW_E~JENT],aH
1 cr6 E8F6F4 189S CaLL RUN_C13NYERTER
lCF9 C3 1896 RET
1897 ;
1CF~ BEOOO~ 1898 YOY~KU SE~RCH: ,10V SI,HELF
1CFD 03362807 1899 ~DD SI,tlC_EYTE~
1D01 B700 1900 MOY BH,O
1D03 8a1C . 1901 MOV BL,tSI~
1D05 83FB00 1902 C~P BX,O
1D08 7~0F 1903 JZ UP_W~KEaRI
1D0~ ~8 1904 DEC 8X
1b08 E9OB00 190S JrP UP_WaKEBRI

1DOE 8EOOOa 1907 UP_YOYaKU: MO~ SI,HELP
1D11 03362807 1908 ~DD SI,tlC_BYTE~
1D1S B700 1909 MOV BH,O
lD17 B~lC 1910 . MOV BL,tSI~
lDl9 88362407 1911 UP_WaKE~RI: MO~ SI,tCON~_NO~
l~lD 8107 1912 MO~ CL,7 lDlf D3e6 1913 ROE SI,CL
lD21 81C60006 1914 ~DD SI,ES_EVENT_TIMER
lD2S B164 191S MO~ CL,100 lD27 43 1916 UYL: I~C BX
1D28 83FB64 1917 CMP BX.100 tD2D 8B0100 1919 ,lOV BX,1 1D30 26F60007 1920 UYJ: TEST BYTE FTR ES:tSI~BX~!f 1D34 7S06 1921 JNZ UD_Y_RET

lD3a F9 1924 STC

1926 :
1D3C 891ElE07 19-~7 UD_t_RET: MO~ tBIN~R-_LED~.EX
1D40 E825Fa 1928 C~LL 8I~QEC_LED
1 ~:9 1D43 8E3000 1930 ~OV SI.. E ENT_CH~NNEL
1D46 03362407 1931 PDt- SI,tCON~_NO~
1D.a 881C 1932 MO~ tSI~8L

1D4C 8B362807 1934 MOV SI,tlC_BtTE~
1DS0 81C6000~ 193~ ~DD Sl,HELF
1DS4 881C 1936 MO~ C51~8L

HEWLETT-PRC~RRD: 8036 Rs~cmblcr ~ SQUFCE LINE
1939 :

ID~8 BE000R 1941 DQIJN_YOYRKU: ~Ot SI,HELP
tDSB 03362807 1942 RDD SI,CIC_BYTEI
ID5f 8atC 1943 ~OV BL,tSI~
lD61 B700 1944 ~OV BH,0 lD63 8B362407 lg45 MOV SI,tCONV_NO3 lD67 B107 1946 ~OV CL,7 lD69 D3C6 1947 ROL SI,CL
ID6B 81C60006 1948 RDD SI,ES_EvENT_TIrtER
1D6F B164 '949 ~OV CL,1 on 1D71 4B l9S0 DYL: DEC BX
1t172 7503 IgS1 JN2 DYJ
1D74 BB6300 1~2 ~OV BX,9g 1D77 26F60007 lg53 DYJ TEST BYTE PTR ES:tSI~tBX~
1D78 75BF 19S4 JN2 UD_Y_RET

1959 :
lD83 P01E07 Ig60 EVENT_BIN_TBL ~OV ~L,tBINRRY_LED3 ID86 BE3000 1961 hOV Sl,EVENT_CHRNNEL
ID89 03362407 tg62 RDD SI,tCONV_NO~
lD8D 8804 1963 ~OV tSI],RL
lD8F C3 lg64 RET
~965 :

~g67 : --------------------_________________ 1~68 :
lg69 Rnother S~broutincs 1970 ;
1971 -----___--________________ 1972 ;
~973 lD90 58 1974 RNGO_TOUROKU POP RX
1D91 BE0004 197S ~O~ SI,NEXT_GO_RDR5 1D94 B700 1976 -~OV BH,0 lD96 8RlE2807 t977 ~OV BL,CIC BYTE~
lD9R 02DB 1978 RDD BL,BL
lD9C 9900 1979 ~OV tSI~tBX~,RX
~980 J
ID~E B8~CD4 1981 ~NGO_1_10: ~O~ RX,RSCII_NU
lDRl Ea00F7 1982 CRLL SPU_LED_~X
lDR4 E8B1F8 lg93 CRLL TI~ER_10_5EC
1984 :
lDR7 E81OFR l985 CRLL NEXT_CONTINUE
- ~ sa6 lDRR E8FC00 19S7 CRLL RNGO SUB
lDRD 7307 1~88 JNC RNGO_1_20 IDRF 3C16 1989 C~tP ~L,CLER~ ~Ei CODE
1DB1 7571 1990 JN7 RNGO_ERR
lDB3 Eg42FB 1991 J~P RRNDQ~_~OtjORI
IDB6 8800 lg92 RNGO_l_ 0: ~OV t5I~tBX~YRL
IDB8 8R00 1?93 RNGO_l_ I: ~OV RL,tSI~te;~,~
IDBR R28407 1994 ~OV tL5B LED~,RL
lDBD B420 1~9~ ~OV RH,20~

~ 316 HEWLETT-PBCK~RG: 8086 ~s, n~bI~r SOURCE L I NE
lDBF E80E01 l9q6 C~LL aNGO_SUBt l q97 :
lDC2 E8fSF9 1998 C~LL NEXT_CONTINUE
1 ggg IDC5 E8E100 ~000 C~LL ~NGO_SU6 lDC8 73062001 JNC QNGO 1 30 lDCR 3C162002 C1~1P ~RL,CLE~R I~EY_COQE
lQCC ,5562003 JNZ ~:INGO_ERR
lDCE E8CE004 J11P ~NGO_1_10 1 DD0884001 2005 ~NC :1_1 _30: I~IO t CSI I t~X I 1 1~ f~L
lDD3 81~4001 qO6 ~NGO_1_31: 1~1OY ~L, tSI~tBX- l 1DD6 fl2840- 2007 llOY tLS8_LEQ~L
1DD8 8a20.Oq8 ~O~ f~H,tSIJtBXI
1 QDBE8F200 200q C ~L L ~NGO_SUB 1 1DDE E8D9F9 2011 CRLL NEXT_CONTINIJE

lDE1 E8C500 2013 C~LL ~NGO_SUB
1DE4 7306 . 2014 JNC ANGO_1 40 1QE6 3C162015 C11P aL,CLE~R_KEY_COQE
1 DE8 75E9 016 JNZ IqNGO_1 _31 1DE~ EBCC701. JIIP ~NC0_1_21 1DEC 884002 2018 ~NGO_1_40: 110- CSIltBX121~L
1 DEF8~4002 2019 ~qNG O_ 1 _41: 1~10V P~L, C S I ~ C B X ~ 21 1DF2 ~28407 2020 I~IOV CLSB_LEQ~ ,~qL
lDF5 81~6001 2021 ~10~J ~H, [Sl ~ CBX~1 1DF8 E8D500 2022 C-qLL ~NGO_SUB1 20~3;
1DF8 E8BCF9 2024 C~LL NEXT_CONTINUE

tDFE E8~800 2026 C ~LL f~NGO_8UB.
1E01 731~62027 JNC 8NGO_1_RET
1E03 3C1620;28 C11P QL,CLEP~P_KE-t COQE
1EOg 751D2079 JNZ f~NGO_ERR
1 E07 E8C~ 2030 J1~1P ~NGO_1_31 1E09 884003 2031 aNGO_1_RET: IIO- tSI~CBX13~,~L
1 E QC028407 2032 110~r C LSE_LEQ ~, ~L
1 E OF8~6002 2033 NOV ¢IH, t S I ~ t BX~2 1E12 E8B800 21~34 C~LL IqNBO_.;UB1 2 q35 1E1S BE0004 2036 ~10V SIJNEXT_GO ~DFS
lE18 B7002037 rlOV BH,0 lE1~q801E2807 2038 IIOV BL,CIC_e~TE3 1EtE 02QB2g39 ~QQ BL,BL
1E20 8B002040 I~IOV ~XrCSI~CBX~
1E22 !50 2041 F USH ~RX

2043:

204S:
1 E2, E9BBFF1 7 a46 ~NGO_ERR : .JI~IP 115GERR_I~IT_ENQ

2048:
2 ~49 1E27 S82050 ~NGO_INPIJT: POP ~X
IE28 BE0004 21JS1 ~O~ SI ,NEXT_~O ~QRS
1E2e B7002052 llO~ BH . O
_ _ . . . . . . . .

HEldLETT-Pf~CKhRG: 3096 R~ r SQI!PCE L I NE
I E2D 8Q I E2907 2 qS3 I'IOY BL, t I C_BYTE
I E31 02D8 20~4 ADD BL, BL
IE33 8~00 20SS ~IOV tSI~t8X~,RX
,056 IE35 B8B6B6 2QS7 fANGO_2_10: MOV RX,086E16H
IE38 EY69F6 2053 SALL SPU_LED_R~
IE3B E81iAF8 20S9 CALL TII~IER_I Q_SEC
2060;
IE3E E879Fg 2Q61 CALL NEXT_CONTINUE

lE41 E86S00 2063 fANGQ_2_11: CALL ANGQ_SUE~
IE44 7307 2064 JNC RNGO_2_20 IE4t; 3C16 2065 S11P AL,SLEAP_KEY_CODE
1 E48 75DR 2066 INZ ANGO_EI?R
1 E4A E9fABFR 2067 JnP RANDOI~l_l`lODOP I
1 E4D 8800 2089 RNGQ_2_20: I'IOY t S I ~ t BX ~, AL
l E4F B8B686 2069 RNGO`_2_2 t: I'IOY 4X ,96E~fiH
lE52 E88900 2070 CALL RNGO_SUB2 2g71:
lE!5~5 E862F9 2072 CALL NEXT_CQNTINUE
20~3 I ES8 E94E00 2074 CRLL ANGO_SUB
I ESI~ 7306 2075 JNC RNGO_2_30 IE5D 3C16 2076 Cr~lP RL,CLERR_KE`r'_SODE

1E61 EBD2 20f 3 J11P fAN~0_2_10 1 E63 884001 2079 fANG O_2_30: tlOV C S I ~ t B X + I ~, RL
1E66 B8B620 2030 ANGO_c_31: llOV AX,20B6H
IE69 E87200 2081' CRLL RNGO_SUB2 2082:
tE6C E34BF9 2083 CALL NEXT_CONTINUE
20a4 I E6F E83700 2085 CfALL fANGO_SUB
IE72 7306 2096 JNC IANGO 2_40 IE74 3C16 20137 CI~IP AL,CLE4R_KEY_COGE
I E76 75fAC 2088 JNZ RNGO ERR~
1 E78 EBDS 2 qas J11P ~NGO 2_21 lE7R 884002 2090 fANGO_2_40: 11OY tSI~tBX+2~,AL
1E,D B9`'3620 2091 RNGfs_2_4t: I`IOY fAX,209fiH
I E80 E~5B00 2gg2 CALL fANGO SUB2 2 gq3 ;
1 E83 E834F'3 2 Q94 CfALL NEXT SONT I NIJE
20q~5;
lE86 E82000 20~6 CALL fANGO_SUB
1 E8q 7306 2Q97 JNC RNGO_2_RET
lE8B 3C16 20g~ Cl`lP AL,CLEAR_lCE`f'_SOrlE
t E8D 759S 2099 JNZ fANGO_EPP
IE3F EBD~; 2100 ~ Jl`tP fANGO 2 :st t E9 t 384 Q Q 3 2101 ANf. O c RET ~ I~IOV t S I ~ t B~:+ 3 ~ . RL
1 E94 B9202 Q 21 Q 2 11OV AX,2 Q201~
IE97 E8`1400 2103 CALL fANGO_SI!F~2 cl 04;
lE9R BE0Q04 21Q5 IqOY SI,NEXT f.O_~Dls_ IE9D B700 2106 I~IO'/ BH,0 1 E~F 8fA 1 E2 :: Q . '' I Q7 I`IO'/ BL, t I C_B'f'TE ]
.IER3 Q2D8 - 10:3 RDD BL,E!L
lERS 3B00 2109 I'lOV L~X,tS}~CE~X~

HE~JLETT-Fi~l`K~PCI: B 0~6 ~c~mb l er 30UI~CE L I NF
1E~r SO 2110 PUSH ax IE~8 C3 21 1 1 PET
2112 :
-113 ;
21 14 :
lE~8 ~08907 21 It ~N~Q-sue MOV 2L, CKE~ P~T~
1E~C EsstF2 -t16 caLL K~ZUKO
lE~F 780D 2t 1. JNC KE~_BuFF_aPPS
lEB l 3C00 2 t la CMP aL, T 1 ME~_OUT_SQCE
1EB3 7504 211~ JNZ K~OPU
lEBS S8 2120 POP ~X
1Es6 E~3FF~ - 2121 JMP RaNDQM_MQGQRI
IEB~ E3tlZoo tl22 K~QFU: caLL KE~f-euFF ~DPS
lEec F~ 21 Z3 STC
lEBD C3 2124 RET
2125 :
lEBE BEOolo 2126 KEY BUFF_~DRS: MO~ SI,KEf_D~Ta sTacK
lECl B700 2127 MOV BH,O
lEC3 8alE2~07 2128 MOV BL,tIC_e.,TE~
lEC7 03DB 2128 ~DD BX, BX
lEC~ 03D8 2130 ~DD 8X,BX
lECB 03DB c~131 aDD BX.BX
1ECD o3De 2132 aDD BX,BX
IECF C3 ~133 RET
~34 ;
lEDO 88268507 213S ~HCQ_SUBI: MO~ cMse~-LED~aH
lED4 Es8DF4 2136 caLL SPU_CLE~R_DISP .-lED7 E8DlF5 2137 caLL SPU_LED_D I SP
-lED~ E87BF7 2138 caLL T I ~lER 10_5EC
lEDD C3 2139 RET
.t ~140 :
lEDE E8C3FS 2141 ~N80_5lJt12: C~LL SPU_LED_~X
EEl Es74F7 2142 CaLL TIMER 10 SEC
lEE4 C3 2143 RET
2144 ~
1EEs E8D8FF 2145 aN8Q-e I N_DX: caLL KE~ EUFF aDRS
lEEa BSoO 14E MOV CH,O
lEE~ 3~FS ~147 MO~ DH,CH
lEEC 3~10 214a MOV DL,CSI~CeX~ ; DX - #1 IEEE 80EZOF 2 t 48 ~ND DL,OFH
lEFl E31F00 2150 caLL MULTI lo Dx ; DX ~ #l*
lEF4 8u4301 21S1 ~OV CL,CSI+13CBX~
IEF7 30ElOF 2152 aND CL,OFH
1EFa 03D1 2153~DD DX,CX : D.X - #1*10+#2 lEFC Es14oo 2154CaLL MULTI lQ DX , r,x I #I*IQ+#2~*lrJ
tEFF aa4tBo2 2155MO~ CL,tS I +2]CBX~
lF02 soEloF 2156~ND CL,OFH
lFOS 03D1 157~DP Dx,CX PX = ~#1*10+#2:)*10+#3 F07 Ee~8oo 21saC~LL MULTI 10 DX r DX =~ ~- #I ~l 0+#2 :)~1 0+#3 i*l t lFO~ 3P4303 215~~0~ CL,~sI+:~ce~
lFOD 30ElOF 2160~ND CL,OFH
lF10 03rJI 21~ p PX,C.~- : ro~ 41~l0+#2i~ltI+~*lt+#q ~1~3;
lF13 03P2 2164 MULTI_10_DX: ~DD DX,DX : *2 I F 15 38C2 21 6S MCV ~X,DX
IF17 Q3Co 2166 ~DD ax,ax : ~2*2 ~ *4 .. . . . . . . .. .. ~

^ ~ 319 1 338044 HEIJLETT-F~CKRPD 8Q86 Rs~mbI~r : so~JPCE LINE
lF19 03C0 2167 Rt>D RX,~X : -~2~2~2 = *S
lFlB 03D0 c168 RDP DX,~X : ~Z ~ ~8 = *lq lFlD C3 21~ PET
21.~0 :
2171 : ~*~ #~ K~ In ~hita ~ng~u ~o t~i~pl3~J Sur~ *'~ J*'~
~1 2 ~
1FIE 58 217~ RNGO t~lSPLRY: POP RX
1F1F BE0004 2174 ~OV Sl,NEXT_GQ ~t>RS
1F22 B700 217S MOV RH,Q
lF24 8~1E2907 21.~6 ~QY 8L,tIC t3YTE]
lF28 02DB 21.7 ~DD BL,BL
lF2R 8gO0 2178 ~OV [5l3tBK~!~X
21.~ :
lF2C E83FFF 2180 C:RLL KEY_BIIFF_~rJPS
lF~F C6400700 2181 MOV BYTE PTP tSI~[B`$I.~,Q
21~2 :
1F33 BgS541 21B3 ~NGQ ûU_WT_LP- ~OV RX,RSC~ U
IF~6 E86BF5 2184 CRLL SPU_LEP ~X
1F3g E30RF7 213C CRLL TIMEP_1_3EC
lF3C E97BF9 ~137 CRLL NEKT_fONTINUE
~'88 :
lF3F ~08907 2189 MOV RL,tKE`~_PRTRi lF42 3C12 2190 CMP ~L,R'ITHO_KEY_CQDE
lF44 7476 21gl J~ RNGO_NINTEI
lF46 3C16 21g2 CMP RL,CLE~R_KEY_I`ODE
1F~8 7462 21g3 02 RNGO NO RUTHO
IF4R E871FF ~1~4 CRLL KEY_BUFF_~PPS
1F~D FE4007 21gS INC BYTE PTR CSI~tkX~
1F50 B020 21g6 MO~ RL,20H
1F52 R28507 21g7 MOV CMSk_LEP~.RL
1F55 8R60 clgB MOY ~L,tSI~tBY~
1F57 R28407 218q MOV tLSB LEP3~RL
IF5R E34EF5 2200 I_RLL ~PU LEP_Pl3P
1F5D EBE6F6 2201 RNGO t`lSP LP: CRLL TIMER_I_SEC
2202 :
IF60 E8~7F8 2203 CRLL NEXT_CQIITI~IUE
2204 ;
lF63 ~08907 c205 MOt ~L,tKEY D~TA~
lF66 3C12 2206 . CMP ~L,~UTHO_IEr_l;Ot~E
IF6~ 7452 2207 JZ 8NCO_NINTEI
IF6~ 3C16 2209 CMP ~L,CLE~R_KE`;_CODE
IF6C 743E 2209 J2 ~NGO NO ~UTHCI
lF6E Ea4DFF 2210 C8LL KE`f BUFF ~DRS
lF71 3~6007 2211 MOst ~H,tSI~CBX+.
lF74 aOE4q3 2212 ~ND ~H,3 lF77 0~DC 2213 OR BL,~H
lF7g a~40FF 2214 MO ~L,tSI~tB;~
lF7C ~2~50Z 22t5 t`tB~ tMse LED],~L
1F,F 3~00 2216 MOY ~L,tSI]tB`~
lF81 ~2a40, 2217 MOY tLSB LED~,~L
lF84 E80DF4 2218 C~LL SPU CLE~R_DISP
lF87 E821F5 221~q C~LL SPU_LED_DISP
2220 :
1F8a E831FF 2221 C~LL KEY_BUFF_~t'RS
lF8D FE4007 2222 INC BYTE PTR tSI~CBX~7 IF90 9a6007 2223 rto~t ~H,CSI~Ct~

320 l 338044 HE~LETT-P~CKRPD: 80Y6 Rssem~I~r . SOU~CE L I t~E
1Fg3 80FC96 2Z24 CMP RH,I~q IFs6 7314 2225 J~C aNGo NO aUTHo 1Fse 80E403 2Z26 ~ND aH~3 lFsB 7SC0 22-27 JNZ QNGO_t?ISP_LP
IF9D E8u6F6 2228 RUGD_~U_RETRY: CaLL T I MER 1 _SEC
~2zg :
1Fqo E817F8 3~30 CRLL NEXT_CONTINUE
2231 ;
1Fa3 ao8so7 Z-232 MOV aL,tKEY C.~RTR~
1Fa6 3C12 2233 C~P aL,aUTHO_KEt_~OC!E
Fa8 7412 2234 JZ ~NGO_NINTEI
Faa EB8~ 2235 JMP RNGO RU UT LP
2236 ;
1FaC BE0004 2~37 RNGa t~8_~UT~O: ~ov SI,NEXT_I;O_~DRS
1FRF 8700 2238 MOV BH. q FBl 8a1E28o7 223g ~O- BL,t I C_E TE3 F8s 02DB Z240 ~DD BL~sL
IFB7 8sqo 2241 MOY RX,tSI~CBX~

FBa F9 2243 STC
lFBB C3 2Z44 RET
224S ;
FBC 8E0004 2246 RNGO NrNTEI: ~O- SI.NEXT ~;O RDP.S
lFBF B700 2247 MOV BH.0 lFCl 8a1E28o7 2248 MOY BL.CIC_E~TE~
lFC5 02t?B 2249 hDt EL,BL
lFC7 eB00 22S0 ~ov aX,tSr~cEX~
lFC9 50 2251 P~JSH RX
lFCa FB 2S2 CLI`

2.S4 ;
22~
22~6 ;
1FCC 3C88 32S7 PRY_GROUP_l: CMP RL,88H
1FCE 7406 2258 JZ FRY_PROG ST~RT
lFt~0 3c8a 225~ C~P qL~8~
lFD2 7478 2260 JZ P~t PROG_STOP
lFD4 F8 2261 CLC
lFD5 C3 2262 QET
2263 :
lFD6 8R44 05 2264 PRY_PQOG_STRRT: ~O~ RL~tsr~5~ Ch 3nn~l lFD9 B400 2265 MOV aH~o lFt1e B5406 2266 ~oV t1X,tSI~6~ I DX - Fr~q. Q.3t3 lFDE BB0009 2267 MOV 8X,EVENT_NO_FRE~
lFE1 03Q8 2268 aDD BX,aX
1FE3 03t?~ 2269 aDD BX,RX , BX 5 Fr~q. T.3~ r~
IFE~ 8917 2270 rov tBXJ,QX ; Fr~qu~n~-~J S~, 2271 ;
1FE7 BaOoOo 2272 MOV t?x~ O
lFER Beooo6 2373 ~oV 8X,ES EVENT TI MEP
lFEQ 03D8 2274 ~DQ 8X~RX
227~ ;
lFEF 83FQ06 2276 E~_F_ST_C~: C~P DX,6 lFF2 7356 2277 JNC P-p-sTRRT-RET
2278 ;
IFF4 26F6q70- 2279 TEST BYTE FTR ES:t8X~"
1FF8 7449 2280 JZ NEXT EV_ST

~ ~ 321 l 338044 HEI~LETT-PR5~:RRD: 808C ~C~em~l~r SOURCE LINE
2Z81 ~
1FFa S0 2 82 FUSH ~X : Ch.3nn~ 1 1FF8 S3 2283 FUSH EX : N ~,h C~nv~r-t-r E.~ont Tim~r ad~ o FFC S2 22~4 PUSH DX : Dr~p No .

lFFD R31E07 2286 MO. c8rNRry-LED].Rx 2000 881624n7 2287 MOY tCON~._NO~.DL
Z004 268ao7 c2~8 ~O~ aL~ES:t8X~
2007 2407 228q aND aLj7 2009 7S02 2Z90 JNZ DEV_OK
200E BOOZ 2291 MO~ aL~2 -~2~2 ~
2onD ~22~07 Z293 DE~_O~ O~ CDEYICE_NO~,~L
2010 02C0 2 94 ADD RL,~L
2012 02C0 2295 ~DD RL,~L
2014 02C0 2296 ~DD ~L,RL ; RL # 8 2016 02DO 2297 ~DD DL,~L
2018 88162807 2~98 ~O~ CIC_EYTE~,QL
201C E81~F0 2~99 C~LL CON~_TO_DROP
201F E884F0 2300 C~LL ID_DROP_tlEYICE
2022 E88FF3 2301 - caLL SPU_REL~Y_ON
202S 8BlE1E07 2302 ~OY BX,CEINRPY_LED~
2029 E83CF7 2303 CRLL BINDEC_LED

202C BE8003 2305 ~O~ JUMP_~DDP~ESB
202F 03362807 2306 RtD 8l,tlC_BYTE~
2033 03362807 2307 RDD SI~tIC_EYTE~
2037 8B161~07 2308 MOY DX,tE~SE POINT~
203t~ 8914 730~ ~O~ CSI~.t~X
2310 :
203D E81FFC 2311 C~LL FORCEtl EYENT
, 2312 ;
2040 S~ Z313 POF DX

2042 58 ~31S POP ~x 2043 42 Z316 NEXT_EY ST: INC DX
2044 81C38000 2317 RDD Bx,128 2048 EB~5 231-8 .JMF EV F ;T_C~:
.31~ ;
204~ F8 ~320 P_P_ST~RT_RET: CLC

Z322 ~
204C 90 ~323 P~Y PFOC STOP: NOP
204D F8 2324 P~Y_GROUP_Z: CLC

23~6 ;
2327 ;
z328 ;
23 9 CLOB~L POWEF_GET l-MD
2330 GLOB~L LO~D_FFOM_DR13P
2331 CLOBRL LO~D_T13 DROP
2332 CLOB~L SPIJ_ST~TUS_RE~
2333 GLOBaL ID_DROP DE~ICE
2334 CLOtRL IC_DROF DE~:ICE
~33S GLOBaL CON~_SW tilT-aL
Z336 GLOBaL DROP_BI T aL
2337 CLOB~L SPU_RELhY OFF

~_ 1 338044 HEWLETT-PAC~:~RD: 8036 A~mbI~r SOURCE LINE
2338 GLOBAL SFU_CLEAR_DISP
'339 GLQBAL E'~/E~T_LED_OFF
234~ GLOBaL DROP_~AP_SET
2341 GLOBAL KEY OPERATIO~
2342 GLOBAL CONY TO_DP~OP
2343 GLOBAL t`POP_TO_CON'.' 2344 GLOBAL BINDEC_LED
234S GLOBAL LEt'_YIEW_TBL
2346 GLOBAL 5PU_LED_DISP
2347 GLO8~L RIlN_CONYERTER

2349 GLOBAL OP_SPU_OFF
23S0 GLOB~L OP_INITI~L
2351 GLOBAL PASE_ROUTINE
2352 GLOBAL JU~P ADPS INIT
2353 CLOBAL 0ll~P_~t!P'_INIE
2354 GLOBAL t~EYICE_~AP SET
2355 GLOBAL PAY_GROUP_1 2356 GLOBAL PAY_GPOUP_2 23S~ :
2358 :
2359 ;
2360 EXTRN SPECI~L SPU 1 ~361 2~3 2~65 Error,~,~ O

Claims (7)

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

1. A cable television system for transmitting via a cable network television signals from a head end to a plurality of subscriber premises, and other signalsbetween the head end and the plurality of subscriber premises, comprising:

polling signal means associated with the head end for applying polling signals to the cable network;

external control unit means located at a plurality of remote locations, each location being adjacent but external to a subset of the subscriber premises, for receiving the television signals and the polling signals from the cable network, each external control unit means having an address;

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 processing unit means connected to each drop cable at the subscriber premises for allowing the subscriber to apply to the drop cable a control signal indicative of information to be transmitted to said external control unit means, including information indicating the portion of the television signal which that subscriber wishes to select and information for transmission to the head end;

control signal processing means associated with the external control unit for receiving and storing the information indicated by the control signals applied to all of the drop cables associated with that external control unit means and for applying to each drop cable the portion of the television signal indicated by the television signal selection information received via the drop cable;

polling signal processing means associated with each external control unit means for processing the received polling signals and for responding thereto by applying to the cable network for transmission to the head end a response signal communicative solely of whether or not said external control unit means has information to transmit to the head end; and means associated with said polling signal means for, responsive to receipt from said external control unit means of a response signal communicative of a desire by said external control unit means to transmit information to the head end, applying additional polling signals to the cable network for determining the address of said external control unit means desiring to communicate.

2. The cable television system defined in claim 1 further comprising:

means associated with the head end for applying a request signal to the cable network responsive to receipt from said external control unit means of a response signal communicative of a desire by said external control unit means to transmit information to the head end; and request signal processing means associated with said external control unit means or receiving the request signal and for responding thereto by transmitting to the head end the information received and stored by said associated control signal processing means.

3. The cable television system defined in claim 2, wherein the polling and request signals include address signal data indicative of the external control unit means to which the polling and request signals are to be transmitted, and wherein said external control unit means further comprises:

means for producing address signal information which uniquely identifies said external control unit means; and means for comparing received address signal data to the address signal information and for causing said polling signal processing means and said request signal processing means to respond to received polling and request signals if the received address signal data bear a predetermined relationship tothe address signal information.

4. A cable television system for transmitting television signals via a cable network from a head end to a plurality of remote locations, each remote location being adjacent but external to a selected set of subscriber premises, comprising:

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

a plurality of drop cables connected to at least one 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 the drop cable at the subscriber premises for applying to the drop cable a service request signal communicative solely of a request by the subscriber device means to communicate with the external control unit means; and drop polling means associated with the external control unit means for sensing in a predetermined order on each drop cable the presence of the service request signal to enable the associated external control unit means to rapidly locate a drop cable on which a subscriber device means is requesting to communicate with the external control unit means; wherein:

said service request signal has a duration at least as long as the time needed for said drop polling means to sense all of said plurality of drop cablesin said predetermined order.

5. The cable television system of claim 4, further comprising:

device polling means associated with the external control unit means, said device polling means being responsive to the drop polling means sensing the service request signal on a drop cable for applying a first control signal to that drop cable, the first control signal including data indicative of a subscriber device means address;

address means associated with each subscriber device means for producing address signal information which uniquely identifies the subscriber device means on the drop cable to which the subscriber device means is connected;

transmitter means associated with each subscriber device means for applying to its associated drop cable a second control signal indicative of datato be transmitted to the external control unit means, and means associated with each subscriber device means for receiving the first control signal, for comparing the received address signal data to the associated address signal information, and for enabling said transmitter means associated with said subscriber device means to transmit the second control signal if the received address signal data bear a predetermined relationship to the associated address signal information.

6. The cable television system of claim 5, wherein:

a plurality of subscriber device means are connected to one drop cable;
and the device polling means includes means for applying to that drop cable a plurality of first control signal, each first control signal including addressdata indicative of a different one of the subscriber devices connected to that drop cable.

7. The cable television system of claim 6, wherein at least one of the subscriber device means is a subscriber processing unit means for allowing the subscriber to apply to the drop cable and communicated to the external control unit means second control signals indicative of the portion of the television signal which that subscriber wishes to select.