SU1339577A1 - Interfacing device - Google Patents

Abstract

This invention relates to the field of computing. The aim of the invention is to simplify the device. The device comprises a register unit 1, a control unit 2, a memory 3, a selector 4, a control trigger block 5, a buffer memory 6, a modem communication unit 7. The device provides the interconnection of the computer with the remote station by implementing firmware communication control using the control unit, control unit, triggers, and additionally entered memory and selector. 1 il. Sync from VM co oo

Description

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The invention relates to computing technology, in particular: to devices for interfacing computers with data interfacing equipment, can be used in data acquisition systems, processing and displaying various types of data, in telediagnostics systems and allows organizing multimachine complexes based on several computers. interconnected via communication channels.

The aim of the invention is the ynponie of the interface circuitry.

The drawing shows a block diagram of an interface device.

The device contains a register unit 1, a control unit 2, a nam 3, a selector 4, a control trigger unit 5, a buffer memory 6, a modem connection unit -1.

The register unit 1 serves to exchange information and display the current states of the computer and the device, as well as to store the intermediate features of the microprograms, the initial address of the microprogram, and to issue it to the memory block. Unit 1 also serves as an intermediate storage for symbols along the communication line. Control unit 2 is designed to convert the computer addressable signals into write signals — read registers block 1 and memory 3 into reset signals and set control triggers. The memory 3 is used to store the firmware received from the computer, to store the microcommand and to analyze the signals of the operating conditions of the device. The selector 4 is used to initiate the microcommand of the appropriate format and to count the symbols exchanged over the communication line. Control trigger block 5 serves to control memory, buffer memory 6, modem communication block 7, and to organize a sequence of clock signals. Buffer memory 6 is intended for receiving signals from a communication line and for issuing characters to a communication line, as well as for intermediate storage of symbols when comparing them with service symbols. The modem communication unit 7 serves to issue and receive interface signals, to arrange bit synchronization with the modem, and to count eight bits of a symbol. The information comes from the computer to block 1 when there is a write enable signal from block 2 and is recorded

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in the corresponding rotor unit I. Three registers are used to store the initial address of a firmware program called from a computer. In two registers is stored exchange symbol with the communication line. All registers are used to store device status indications. The device works as follows.

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At the initial moment of time, all registers and triggers are reset from the computer, thereby prohibiting the issuance of a sequence of clock signals in block 5 controlling the operation of the device. Then, the filling of the memory 3 from the computer begins. From the computer to the memory address counter 3 through block 1, according to the control signals from block 2, it records the address of the recorded microcommand. At this address, 32 bits of microcommand are recorded in the memory according to the control signals of block 2. Then in the address counter

25 of memory 3, the address of the next microcommand is entered, and it is again written into memory 3. This continues until all the firmware is written into the memory. After the firmware is stored in the memory 3, the initial reset is again performed, the address of the first microcommand of the device operation is entered into the counter of the memory address 3. WA, the trigger in block 5 is set to one. Thus, the device sync sequence is triggered. In the register of the selector 4, a microcommand from memory 3 is entered, which through the selector

4 initiates the corresponding actions. If it is necessary to send a character to a computer, it is sent to the registers of block 1 using an F1-format micro-command, and then the computer finds it

45 of these registers. In order to send a character to the communication line, the computer sends it to the registers of block 1, and from there a F1 format microcommand is stored in memory 6 and then sent a bit by bit from the modem upon arrival of the clock signal from the modem. The F2 microcommand can store any information in block 1. Therefore, program-accessible registers are used to fix the state of the device. In the event of a disruption on the part of the computer device, it collects information; from these registers of block 1, it determines the action that must be taken

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This is to satisfy this chapros, for example, to assign a character to a device for transmission to a communication line. To turn off the device, the computer resets the triggers of block 5, after which the output of the sequence of clock signals in the device stops and it stops working.

Claims (1)

Invention Formula An interface device containing a block of registers, the information input of which is connected to the information input from the computer of the device, whose address input is connected to the address input of the control unit, the information direction output of which is connected to the input on-. control information of the register block of the control input of which is connected to the control output of the register block of the control trigger block, the inputs of the installation and sampling of which are connected respectively to the outputs of the setup of the register block and the selection of the control block whose control input is connected to the control control module, the output of the control trigger block, the outputs of the buffer memory and the communication unit with the modem of which are connected to the control inputs of the buffer memory and the communication unit with the modem, respectively, d and the modem synchronization output and the exchange synchronization output of which are connected respectively to the input AND output of the device modem synchronization and the synchronization input of the exchange of the buffer memory, the information input and output of the reception information of which are connected respectively to the input and output of the device modem information and the input of the reception of the register block, information output before Editor A. Borovich Compiled by M. Makeev Tehred M. Didyk 4224/40 Circulation 672 Subscription  VNISHI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Rauschska nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 0 9577 chi with (.1 with the information input to the buffer memory, so that, in order to simplify the device, a memory and a selector are entered into it, and the synchronization input from the computing machine - connected to the synchronization inputs of the buffer memory, the communication unit with the modem, the memory and the control trigger unit, the control inputs and the conditions of which are connected respectively to the control output of the selector and the output of the condition condition 15, the read-write inputs counter, conditions from buffer memory, conditions from communication unit with the modem, the byte numbers are connected respectively to the read - write output of the control unit, 0 by the selector counter, the outputs of the buffer memory and the communication unit with the modem, the output of the byte number of the control trigger block, the outputs of the microcommand, the sign 25 of the format, the read control and the entry of the information of the memory record are connected respectively to the input of the contents of the microcommand selector, the format of the control unit, the control of the read information of the register block and the output of the record information of the register block, interrupt outputs and account synchronization of the control trigger block are connected respectively with the interrupt output of the device and the synchronization input of the selector's account, the outputs of the register number, transmission direction, the constant of the microcommand, and the exchange control with the modem with are connected respectively with the register number of the register block, the transmission direction input of the control block, the input of the buffer buffer microcommand constant, and the exchange control input with the modem of the communication unit with the modem. thirty 35 40 45 Proofreader M. Demchik