SU1432535A1 - Device for interfacing subscribers with computer - Google Patents

Abstract

The invention relates to computing and can be used in channelized interface devices of electronic computers. The aim of the invention is to increase the capacity due to the possibility of selecting and forming the address of a new subscriber upon his request during the servicing time in a computer application from the previous subscriber. The goal is achieved in that the device containing the register 4 of the reception mask, the first group of 3 elements AND, the switch 5, the converter 10 of the position code into binary, the element 8, the pulse generator 7 and the first counter 9 are entered the second 16 and the third 14 counters, the second 13 and third 12 groups of elements AND, trigger 6, address register 11, reception register 2 and element OR 5. The device allows parallel servicing of applications in a computer and generates the address of the next subscriber whose request must be serviced, which leads to a decrease in the number non-serviced orders and exclusion of their loss. The device also performs a temporary control over the process of servicing the request // // wok, which eliminates the hanging of the computer processor. 1 il.

Description

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The invention relates to computing technology and can be used in multichannel devices (electronic computing machines).

The purpose of the invention is to increase the capacity of the device.

The drawing shows the functional diagram of the device.

The device contains tires 1 Transmitter i) oc subscribers, reception register 2, the first group of elements And 3, request mask register 1, switch 5, trigger 6 j pulse generator 7, element 8, first counter 9, convert the position code to binary, address register 11, the third group of elements AND 12, the second group of 13 elements AND, the third counter 14, the element OR 15, the second counter 16, input 17 Response of the signal device's computer, output | 18 Signal failure, signal foud 19 Request of the computer , group {address outputs 20 of the device. I The device works as follows.

 | In the initial state, all the counters ||) the registers and triggers are in the zero state (the fault circuit is not shown jnj).

One or several tires 1 receive initiative signals from subscribers. From bus 1, signals are sent to roster 2 and memorized. From register 2, signals in accordance with the code recorded in Register 4, through element AND b are sent to a group of information inputs of switch 5, and the output of elements And 3 receive signals only from those devices that are allowed to be serviced, as in Register 4 for these devices is recorded. 1 The group of control inputs of switch 5 receives the binary code of the number from counter 9.

In counter 9, the pulses rtocTynaroT from the generator of 7 pulses through the element E 8. In the initial state, i.e. in the absence of requests at the output of the coagulator 5, there is no single signal and the trigger 6 is in the zero state, a single signal is generated from the inverse output of the trigger 6, allowing the passage of pulses from the generator 7 to the counter 9 through the element I. 9 works in the mode of a unit unit shift by performing a round of all

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their discharges When the unit iaxonnT- c in the discharge of the counter 9, corresponding to the bus number 1 on which the request is located and which01 is stored in the corresponding receive trigger trigger, a single signal is generated at the output of the switch 5. This signal switches trigger 6 to one state. The signal from the inverse output of the trigger 6 through the element And 8 blocks the arrival of pulses from the generator 7 to the counter 9. The position code of the counter 9, corresponding to the subscriber number that made the request, enters the input of the converter 10. From the output of the converter 10, the binary code of the subscriber’s address The direct output of the trigger 6 is written to the address register 11. The generated address corresponding to the number of the subscriber making the request, when a request is received from the computer, at input 19 of the device is transmitted from the outputs of the And 12 elements to the computer for servicing. The transmitted code can be the starting address of the program serving the subscriber. .

A single signal from the direct output of the trigger 6 is fed to the inputs of the And elements and a single signal from the output of one of the And 13 elements embraces the corresponding bit of the receive register 2 to receive new initiative signals from the subscriber.

After receiving the address, the computer sends a signal to input 17, which means that the address code is sensed. The output signal from the OR element 15 switches the trigger b to the zero state, the register 11 is nullified to receive the new address, and the counter is unlocked and the device operation is repeated.

No signal on device input 19 A request for a computer means that it is busy and it is impossible to serve the request of a subscriber whose address is generated by the device. In this case, the counter 14 counts the pulses from the generator 7. After the time determined by the width of the counter 14, an overflow signal is generated at its output, which through the OR 15 element enters the reset input of trigger 6, switching it to the zero state. The signal from the inverse output of the trigger 6 permits the passage of the pulses of the trigger 7, thus creating the possibility of service requests that have again been received by this moment in the register 2 of the reception. The overflow signal from the output of the counter 14 is fed to the input of the counter 16, increasing its state by one. If the request of the computer signal is not received for a long time, during which the overflow signal is generated in the counter 16, then the output 18 receives a signal indicating that it is impossible to serve any of the incoming subscriber requests. The signal at output 18 can be used to interrupt the operation of the computer and to address the causes of the situation, in particular by restarting the processing program, which leads to a reduction in unproductive downtime, as well as the detection of such situations as a computer processor

Claims (1)

Invention Formula A device for interfacing subscribers with a computer, containing the request mask register, the first group of elements AND, the switch, the pulse generator, the first counter, the position code converter “binary, the element AND, and the group of information outputs of the request mask register is connected to the first inputs of the And the first group, the outputs of which are connected to the group of information inputs of the switch, the output of the pulse generator is connected to the first input of the element I, the output of which is connected to the counting input of the first counter, the group of outputs which is connected to the group of information inputs of the position code to binary converter and to the group of control inputs of the cockchutator, characterized in that, in order to increase the capacity of the device, the second and third groups of elements I are entered into it, 0 five 0 5 Q 5 0 five the DIM element, the second and third counters, the address register, the trigger, the receive register, the second inputs of the AND elements of the first group are connected to the output register group, the information input group of which is a device input group for connecting to the corresponding subscriber buses , a group of inputs for resetting the reception register is connected to the outputs of the corresponding elements AND of the second group, the switch output is connected to the trigger setup input, inverse11 the output of which is connected to the second input of the AND element, and the direct the course - with the synchronization input of the address register and the first inputs of the elements of the second group, the second inputs of which are connected to the output group of the first counter, the output group of the position code to binary converter is connected to the information input group of the address register, the output group of which is connected to the first inputs of the corresponding elements And the third group, the outputs of which are similar to the group of outputs of the device for connection to the address group of computer inputs, the output of the OR element is connected to the reset inputs of the trigger and the register addresses, and the first input is the device input for connecting the signal output of the response of the computer, the second input of the OR element is connected to the counting input of the second counter and the output of the third counter, the counting input connected to the output of the Pulse generator, the reset input of the third counter is the device input for connecting the output signal The request of the computer and. is connected to the second inputs of the elements of the third group and the reset input of the second counter, the output of which is the code of the device for connecting the signal inputs Denial of service bonentov.