JPS582928A - Communication controller - Google Patents

Abstract

PURPOSE:To simplify the structure of a control program and to shorten the processing time of the character processing and etc., by determining character classification codes indicating statuses of MODEMs and network controllers and providing a monitor part which detects the change of statuses. CONSTITUTION:In case of the character reception processing or the like of a certain line, contents of an MODEM status register MDS are compared with contents of the register MDS, which are stored in an MODEM status memory MDS1 in the just preceding scanning cycle, in exclusive OR circuits EOR1- EORn, and corresponding EORs output ''1'' when they do not coincide with each other. An MODEM status encoder MEC outputs a character classification code indicating the status of the MODEM corresponding to bits ''1'' and outputs this code to a character table buffer CTB. Meanwhile, a character classification code is outputted from a sense buffer encoder SEC in accordance with respective bits of a sense buffer SSB and is stored in the buffer CTB. When a change is detected in contents of the register MDS, a gate A3 is closed by the output of the encoder MEC to stop the output of the encoder DEC, thus detecting the abnor mal state of the MODEM.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a communication control device that can simplify processing related to control and monitoring of a network control device and a modem device connected to a communication control device in a data communication system.

Generally, in a data communication system, the central processing unit and times Im,! The communication control device provided for the interface between the two monitors the network control device and the modem. For example, in character reception processing, the modem (hereinafter referred to as a modem) is in normal operation and the communication control device monitors the network control device and the modem. Check whether the received characters are correctly received and are round and if they are received correctly! The 6 & scissors character is a transmission control character, for example, the character placed in the received character Boolean o destination 111 (8
:1 tart of digits ext) or scissors letter day I
The character placed at the end of (ETX: lad of T
ext ), etc., or general characters, and the processing of the own ``scissor'' characters can be done based on the content of the scissors character classification O. ★Eh, even if a character is sent by Asahi Soju or a mail is sent by JlallK, processing is performed in the same procedure as the * character reception process described above.

The third diagram shows the configuration of the overconfidence control device.

The communication control device of the opening is equipped with a control@LC and a calculation section CC, and has a plurality of interface circuits LIIO-Lel.
The network control device NCU Kl! It is threaded. W holder LC can be used to indicate the status of the signal line of the control device, such as modem Stemes register MD8, reception character O normality, etc. to indicate the status of the signal line of the control device. The circle indicates whether the code is a valid character, that is, a sense parameter indicating whether the character is a valid character.
Register introduction x1 Line number register Iυ to store the number of the line to be processed, line number register L
A character table A that is read from the character table TBL and displays the round character classification contents of the twin decoder U that decodes the contents of NH, for knowing the type (character classification) of the received character or transmitted character; for requesting processing from the file or character table register CTII, the control unit C0NT that controls the operation of each part in the control gLC, and the arithmetic unit CC! 611 request 7 lag F
Equipped with LG etc. In addition, the calculation section CC is connected to the microphone! Control system C8 for storing program, address/resume ADH, operating system 0PR1) Wrap circuit TRP
, an arithmetic logic unit LU, and an arithmetic register RIG and 1-111G.

The communication control device having the above-mentioned configuration performs time division processing on the modem MDM or network control device NCU for a plurality of lines, that is, one line. In other words, the p-line number register LNR is sequentially updated according to instructions from the control controller C0NT, and is input to the line decoder/IJ[) to randomly select one of the line drive signals LNQtk to LNmO. , character data is input from the corresponding 11 m modem MDM, etc. to the received character res. , The character classification content indicating the scissors character data IO type is stored in the character table PY7ACTEBK0 Next, the control unit nit Cω (T#1J611 request 7 turns on the ladder and the calculation unit ccK#s taki is turned on. request.

The operation sCC is processed as described above. The place where the request came from, Toragu! The #Asahiun request is detected by the Otori device, and the address/
Move the address of Regis JADIKIII's memory c8 and start the #& operational microphone 4 fa program. If the modem MDM is connected to the 9th layer request 062, the control procedure shown in FIG. 2 is executed. That is, from the spring in the modem register MDIO to the modem M
After confirming that DM is operating normally and confirming that the received characters are valid characters from the contents of Sense Puff 77881HD, the character table buffer CTII K
Each process is performed according to the stored character classification contents.

For example, if the content of the character table buffer CTB is 00, the transmission control character is CTl-0 in Figure 2.
The processing for transmission control characters is performed for characters defined as . In addition, if the modem MDM is not operating normally, abnormality processing will be performed using fault processing zologram etc. It is determined whether the character is an all-space polar character or not, and the necessary O processing is performed.

Furthermore, if the network control unit NCU is connected to a line for which a processing request has been made from the control unit LC, as an example, the controller IN (dialing in progress 1[) shown in FIG. 3 is executed. That is, the modem path status register MD84D
From the contents of each bit, confirm that the DLO bit, which indicates that the network control unit NCU is operational, is on, and that the MCL bit, which indicates that the network control unit NCU is sending out an incorrect code, is off. After confirming that the DIC bit indicating connection completion is off, it is determined whether the PND bit indicating a dial request from the network control unit NCU is on or off. As a result of this determination, if the n bit is on, the overconfidence control device connects the dial transmission lines Dill, D82. If the PND bit is off, the state of the Mayal transmission unit Dll, D12, DI4 and Di8 is maintained in the trench where there is a Mayal request (PND bit on).

By the way, since the above-mentioned processing is performed on a time-sharing basis for each line, in conventional communication control equipment, the control f
This has the disadvantage that Rodaram becomes complicated and the processing time increases.

SUMMARY OF THE INVENTION In view of the above-mentioned problems with the conventional type, an object of the present invention is to provide an overconfidence control device with a character classification code that represents the O status of the modem and network control equipment, and a monitoring unit that detects changes in the status. Based on this concept, the aim is to simplify the structure of the control program and shorten the processing time for character processing, etc.

The actual system performs character classification of transmitted and received character information and uses a predetermined CO
Store the code indicating the character classification contents in the V-jisume, and then set the saturation request flag to the micro! In a communication control device that starts a program and performs processing such as character processing, a character classification content code that indicates the status of the network control device and modem device that are connected to each line of the skeleton communication control device and controls each wrinkled line. and a monitoring section for monitoring the states of the network control device and the modem, and when the monitoring section detects a change in the state of the network control device and the modem, the monitoring section stores a predetermined value indicating the state in the predetermined register. The present invention is characterized in that a circle character classification content code is stored and a microprogram is activated upon a processing request.

In addition, the present invention does not rush character classification of transmitted and received character information, and after storing a code indicating the content of character classification in a predetermined register, activates a microdata system according to a request 7 ladder to perform character processing, etc. An overconfidence control device that processes Kk%/&te, all! - A character classification content code representing polarity and all-space polarity or an out-of-synchronization character is determined, and when an all-matter polarity or an all-space polarity is received and an out-of-synchronization character is received, the character classification content code is set in the above-mentioned predetermined register. The feature is that after storing, the microprogram is activated by a processing request flag.

The present invention will be described in detail below using aim.

11411 shows an example of the overconfidence control device according to the present example.As shown in No. 411, in the present invention, the new nine modem status
Metsu MDI 1, exclusive disintegration circuit EOR1 not l
, Ion wh is provided, modem status encoder C, sense Δt7a encoder If
1NC, 4yA-jl INVI kl and INV2, and PR-) M1 & M4, etc. are provided.

The other parts are almost the same as those in Figure 1.

In the configuration of the happy 4 diagram, the modem status mail 4m7
) 4Dg 1Hiro has the same number of words as the number of lines connected to the communication control device, and each word has its own time! IKI
Status information of nine modems, etc., is stored, that is, the contents of the modem status register jl1MD8 corresponding to each modem before one scan are stored, and the character reception processing cap of each line is stored in the line number register JLNR. This is done sequentially for each line indicated by the modem status.
Memory MD! The next time, the text reception process for 1 and 0 lines has been completed for the call to 11! This is done by transferring the contents of the modem status register JMDI before IK migration. 19. Writing and reading of the modem status memo vMD Hatake 1 is done using the contents of the line number V register 114 as an address. can be done.

In the above configuration, when performing character reception processing on a certain line, the newly set modem Stemes
Register MDIO contents and modem status message 1
The contents of the modem status register pMD8 stored in the Konto IK and the 1** content of the modem status register pMD8 before the signal are exclusive ORed for each pit.
They are compared by a mouse, and if there is a change in the contents of the two, the output of the exclusive OR circuit corresponding to the change is r.
lJ and tkJb, modem status enthusiast〆mc
outputs a character classification code corresponding to the wrinkle output rlJO bit position, that is, a predetermined character classification code representing the state of the modem, and stores it in the character table buffer CTBK.

On the other hand, according to the contents of each bit of the sense buffer 788B, the sense ΔT7A encode/II (J) is generated.

The character classification code is output from Pf-)A3 and stored in the character table ΔT7ACTI.In this case, if the content of the modem status register pwmo mentioned above is modified, the modem・Status encoder IMIC
Otts force in A-JI) andr via JVI
Since the voltage is applied to the sense buffer encoder 8 IC, the ANDr-) gam 3 is closed and the output from the sense buffer encoder 8 IC is blocked. Note that the character classification code is output when the received character is an invalid character, judging from the contents of the sense buffer 788IO, that is, when the data 1 line is an asynchronous line. All in case! - In the case of characters with ta polarity, all-space polarity, or out-of-synchronization characters, a predetermined character classification code is output for these invalid characters.

9. Based on the contents of the received character buffer RCB and the transmitted character buffer 8CB, the corresponding character classification code is output from the character table BL as in the case of FIG.
Character table Δtsu7 act via andr-)m4
It is stored in B. However, if there is a change in the contents of the modem status register MDS or the sense buffer S
If a character classification code is output from SB, input INVI or INV 2 K to Cyandog-F.
A4 is closed and output from the character table BL is blocked. i.e. modem status #V Zosta MD8
, sense and buff 78111. Receive character buffer RCB
C) A priority order is set in order of the transmission literature buffer gcB C), and the character classification code corresponding to each content is stored in the character coder.

FIG. 5 shows the control datagram in the communication control stirrup when the above configuration is used. That is, with the above configuration, the status of the normality of the MDM etc. and the validity of the characters is changed to =-. Character table /(y 7 ACTI K
Since the information is stored, character classification can be performed immediately without having to judge these O states in the control program. Therefore, abnormal states of the modem MDM, invalid characters, etc. are also classified by predetermined round character classification codes, and processing can be performed according to the respective character classification codes.

As described above, according to Honjitsu 11MK, the structure of the control program is simplified, and the structure of the control program is simplified, and there is no need to judge abnormal status of the modem, invalid characters, etc. in the control program.
Processing time such as character processing for each line can be shortened.

[Brief explanation of drawings]

FIG. 1 is a program circuit diagram showing the configuration of a conventional communication system Wit device; FIGS. 2 and 3 are flow charts showing an example of a control program for the device shown in FIG. 1; FIG. Communication according to one embodiment of the present invention! FIG. 5 is a block circuit diagram showing the structure of the l'lJ master device, and FIG. 5 is a flowchart showing an example of a control program for the device shown in FIG. LC・-control unit, cc・-calculation unit, LaI3. L81゜-・, LB grave-in! Face circuit, MDM...modem, NCU...wire control device, MDS...modem
status register, 88B- sense buffer,
MDC...modem drop control register, LNR
...Line number register, LND--Line decoder/, TBL--Character table, CTB--Character table ΔT7a, C0NT--Control units), F
LG...processing request flag, CII...control memory,
ADR...address register, 0PB--operation register, RP--truck f circuit, LU--...arithmetic logic Il: L unit, MU-RIG, B-REG...
Arithmetic register J, MD81...modem status memory, EOR1, "-, EORm = exclusive OR circuit, MXC-modem-status encoder, ate
...Sense-buffer encode/, I) JVI
, I) JV2...Invar! , Mu1. Mu2. M3
．． M4-and dirt. Patent applicant Fujitsu Ltd. Patent application agent Patent attorney Akira Aomi Patent attorney Kazuyuki Nishidate Patent attorney 1) Shino Patent attorney Akira Yamaguchi

Claims (1)

[Claims] 1. Classify the characters of the received character information to obtain a predetermined resolution!
After storing the code indicating the content of character classification in the communication control device that starts the LeMic p7m program based on the processing request flag and processes the character circles, etc., it connects to each line of the communication control device and A character classification content code representing the status of the network control device and modem that performs control for each line is determined, and a monitoring unit is provided that monitors the status of the network control device and modem. and detecting a change in the status of the modulation/demodulation device, storing a predetermined round character classification content 2 representing the status in the predetermined register and activating the processing request 7 ladder microglodaram. Control device. 2. A communication control device that performs character classification of transmitted and received character information and stores a code indicating the content of the character classification in a predetermined V register, and then activates the icrozologram according to a processing request flag to perform processing such as character processing. , a character classification content code representing all mark polarity and all space polarity or an out-of-synchronization character is defined, and when an all-mark polarity or all-space polarity or an out-of-synchronization character is received,
A communication control device characterized in that after storing the character classification content code in the predetermined register, a microprogram is activated by a processing request flag.