RU1783529C - Device for program control - Google Patents

Abstract

The invention relates to computer technology and can be used in devices for debugging programs, devices for monitoring the correct execution of computer programs. The purpose of the invention is to expand the functionality of the device by monitoring the correct execution of a set of information-related programs. At the same time, the correct execution of the program is controlled by determining the availability of all the source data for the program in question. The device for monitoring programs contains n channels 3, each of which contains comparison circuits 4, 13, switch 5, registers 6, 7, 11, 12, T - trigger 8, pulse shapers 9 and 10, AND element 14. 1 ill.

Description

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The invention relates to computer technology and can be used in devices for debugging programs.

The purpose of the invention is to expand the functionality of the device by monitoring the correct execution of a set of information-related programs.

The drawing shows a structural diagram of the device.

The device contains input 1, outputs 2.1 - 2.p, channels 3.1-Z.p, each of which includes a comparison circuit 4, switch 5, registers 6, 7, T-trigger 8, pulse shapers 9, 10, registers 11 , 12, comparison circuit 13, element And 14,

The device operates as follows.

In the initial state, the addresses of the beginning and the end of the 1st program, respectively, are recorded in registers 6 and 7 of channel 3.1. Switches 10 of all channels are connected to the output of the code value at the first input. Registers 11,12 contain (n 1) a trigger, in the j-th trip of register 11 of the t-th channel the value is 1st, if the results of the j-th program are the source data for the execution of the -th program, otherwise in this trigger the sign of O is written. The device register 12 is reset.

Consider the operation of the device on the example of one channel, because other channels work similarly. At the input of the device 1 receives the address code of the computer command counter. The value of the current code of the address of the instruction counter in the comparison circuit 4 is compared with the value of the start address of the monitored program recorded in register b. If the values of the codes at the inputs of the comparison circuit 4 coincide, then at its input a single signal will appear, which translates the T-trigger into a single state. High potential from the input of the T-flip-flop 5 goes to the control input of the switch 5, connecting the register 7 to its output, as well as to the input of the pulse shaper 10. Shaper 10 generates a pulse from the potential drop from low to high If the program corresponding to the channel in question uses results of other programs, then the logical 1 value should be written in the corresponding section of register 12. Such a record comes from the shapers at the end of the execution of the corresponding programs. Thus, if the controlled program is not executed correctly, the codes in the channel registers 11 and 12 are unequal, and therefore, at the input, the comparison circuit 13 will not have a high potential. The pulse generated by the driver 10 passes to the input of error 2 through the open element And 14. Otherwise, if the program

. if it is carried out correctly in the sense of a given control indicator, then when the last address of the program command appears, the codes will be compared in scheme 4, the output of which will receive a pulse. This pulse arriving at the input of the T-flip-flop 5, will translate it into its initial (zero) state. Switch 5 will reset. Shaper 10 generates an impulse for the potential drop from high

to low. This impulse will reset the channel 12 register, and also will go to the corresponding setting inputs of the registers 12 of other channels, the control of the program at its next execution, as well as other

complex programs will occur in a similar way.

The technical and economic advantage of the claimed device in comparison with the prototype is to expand the functionality of the device by controlling the correct execution of the information complex of the associated programs at a low hardware cost.

Claims (1)

The claims A program control device comprising a first channel comprising a first Comparison circuit, a switch, a program start address register, an address register the end of the program, a T-trigger, a first pulse shaper, an And element, two registers, the address input of the device being connected to the first input of the first comparison circuit, the output of which is connected to the input of the T-trigger, the output of which is connected to the input of the first pulse shaper and to the control the input of the switch, the information inputs of which are connected respectively to the outputs of the address registers the beginning and end of the program, the output of the switch is connected to the second input of the first comparison circuit, characterized in that, in order to expand the functionality of the device by monitoring the correct execution of the complex of information-related programs, it contains a second pulse generator, a second comparison circuit, and the output the trigger is connected through the second pulse generator to the first input of the And element, the outputs of the first and second registers are connected to the corresponding inputs of the second comparison circuit, the output is Not equal about the second comparison circuit is connected to the second input of the element And, as well as in the mouth  517835296 The system introduced (n-1) identical channels, the second registers of other channels outputs moreover, the output of the first driver of im-elements And n channels form a group of pulses of each channel connected to the input of the device error inputs, the address input resetting the second register of its channel the device is connected to the first inputs and to the corresponding bit inputs 5 of the first p-1 channel comparison circuits.