SU1242967A2 - Device for monitoring program run - Google Patents

Abstract

The invention relates to computing technology and can be used to control the course of a program of specialized computers and is an improvement of the device according to the author. St. No. 892446. The purpose of the invention is to expand the functionality by checking the execution of the cyclic program sections. The device contains two counters, two AND-NOT elements, five AND elements, a comparison circuit, an OR element. 2 Il. Yu i4 1h9 Q & GO

Description

one

to calculate the program to be used °

The invention relates to a technique and can be called to control the progress of a specialized computer in an automated control system, operating in real time, and is an improvement of the device according to the author. St. No. 892446,

The aim of the invention is to extend the functionality of the device by checking the execution of the cyclic program sections.

FIG. 1 shows a block diagram of a device for monitoring program progress; in fig. 2 - structure of a special team.

The device contains a counter 1, the first element AND-NOT 2, the first 3 and second 4 elements AND, the element OR 5, the comparison circuit 6, the second counter 7, the second element AND-NOT 8, the third 9 and the quarter 10 elements 10, the trigger 11, the fifth element And 12, the resolution inputs 13, the count 14, the reset 15 of the first counter, the first group of information outputs 16 of the device, the input 17 of the device control sign, the input 18 of the transition control sign, the entrance 19 of the transition sign, the condition sign 20, the error output 21, The input 22 of the control sign, the input 23 of the conditional transition sign, the second group of information outputs 24, input 25 of the device.

The special command (FIG. 2) includes a field 26 in which the command code is written, a one-bit field 27 in which 1 is recorded, if it is necessary to control the correctness of the conditional transition to the program section that is started by this special command, field 28 in which the value is written recognition of the conditional transition, the field 29 of the cycle control flag, in which 1 is written, if it is necessary to monitor the correctness of the cyclic part of the program, which is started by this special command, and O, if correct The cycle 30 is not controlled by the field 30, which records the number of commands to be executed on the program section, limited by a special command and the first after it, the conditional jump command or the stop command, field 31, which records the number of repetitions of the cyclic program section.

five

The device works as follows.

If there are no conditional jump commands in the program, then you can specify the number of commands to be executed in advance. In this case, a special command is put in the beginning of the program, O is written in field 27, and the number of commands to be written in field 30. execution in the program without taking into account the stop command, in the floors x 28, 29 and 31 are written O.

In this case, the program control unit works in the following 5 ways.

When the special command is executed, the control unit of the digital computer analyzes the code of the special command “If O is recorded in the special command field 27 O, the unit 18 signal does not receive a single signal of the transition control feature, element 4 is closed and analysis correct execution of the conditional transition is not carried out. The input 15 of the device receives a signal that resets the counter 1 to the zero state. The input 13 of the device receives a control signal to enter the code to the counter, by which the direct code of the number of commands to be executed is recorded in the special command field 30, converted into an additional one and fed to counter 1. B. The end of each command, except the conditional command the transition and stop at input 14 of the device receives a signal by which the contents of counter 1 is increased by one.

When a stop command is executed, a single sign of the end sign control is generated at the device input 17. If the course of the program is not broken, i.e. no command is missing and no command line is executed, then all bits of counter 1 are in one state. From the output of the element AND-NOT 2 to the input of the element 3, the zero signal arrives and a single signal is not generated at its output. If at least one command is missed when executing the iMbi program, then by the time the stop command is executed, not all bits of counter 1 are in one state, the output of the AND-NOT element 2 contains a single signal. When executing a stop command, a single signal comes in | Apply to the input 17 of the device, create 0

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3

At the output of the element AND 3 is the unit signal, which is fed to the input of the element OR 5. At the output of the last, a single signal is formed, which is fed to the output 21 of the device and indicates an error during the program. If an extra command is executed when executing a program, even before the stop command is executed, a single signal is received from the high bit of counter 1 to the second input of the element OR 5 from the transfer output, and a single signal is generated at the device output 21.

If there are conditional jump instructions in the program, you can specify in advance the number of commands executed in the program sections from the beginning of the program to the first conditional jump command between the conditional jump commands and from the last branch of the program of the CONDITION jump command to the stop command. In order to control the progress of the program, the first field of each branch of the program must be executed by a special team. In this case, when executing a special command, both the correctness of the conditional transition is checked as well as the number of commands to be executed at the program section is set to the next conditional transition or stop command. When executing the conditional transfer command, a single signal is received at input 17 of the control end sign as well as. when executing a stop command.

When executing a special command of a program section to which control is transferred by a conditional pereod command, during which a transition is monitored, the program progress control device works as follows.

A single signal arrives at the device input 18, which opens element 4. The second input of element 4 receives a signal from the output of the comparison circuit 6, at input 19 of which a signal of a conditional transition sign generated in the car arrives and a signal of one-bit is received at input 20 a sign from that bit of the machine command register in which, when the special command is executed, the value of a one-bit code recorded in field 28 is stored. If conditional

42967 4

the transition is carried out correctly, then the same signals arrive at the inputs 19 and 20 of the device, from the output of the circuit. we 6 to the second input of the element And 4 receives a zero signal. If the conditional transition is carried out incorrectly, different signals come to the inputs 19 and 20 of the device and from the output of circuit b to the second input of the And 4 element

IQ single signal. From the output of the element AND 4 a single signal is fed to the third input of the element OR 5 and generates a single signal at the output 21 of the device, indicating

j error during the program ..

If there are cyclic sections in the program, you can specify in advance the number of iterations of the cycle. In this front cyclic area

2Q becomes a special command, in field 29 WHICH is written 1, in field 31 - the number of repetitions of the cycle in the additional code. The first command of the cyclic section becomes the special command, in field 27 of which O is recorded, in field 30 — the number of commands to be executed in the cyclic section without considering the conditional branch command, in fields 28.29 and 31 are recorded O. The first command of the program section, on which the transfer of control occurs after exiting the cycle, a special command becomes, in which field 1 is written 1, in field 28 it is written down

with

 the reference value of the signal conditional, transition (s) e 1) and in the remaining fields x (29-31) recorded O.

In this case, the device control the progress of the program works as follows.

o At initial cycle settings in the control unit of a digital computer, a special command code is analyzed. If in the field 29 special team

5 is recorded 1 then a single signal of the control character of the loop is received at the device input 22, which sets the trigger 11 into one state and zeroes all the bits of the counter 7,

 on which the code from the floor 31 of the special command is then entered. At the next execution of the cyclic area (cycle body) in the device for controlling the digital computer, the analysis of the special team is carried out. Since O is written in field 27, a single signal of the transition control feature does not arrive at the input 18 of the device, the AND 4 element

0

0

Acquisition and analysis of the conditional transition is not carried out. Input 15 of the device receives a signal resetting the counter 1 zero state. The input 13 of the device receives the control signal of entering the code to the meter, according to which the direct code of the command numbers to be executed in the cyclic section is written: the command is converted to an additional one and is fed to the counter 1. At the end of the execution of each command, except for the conditional jump command, the input 14 of the device receives a signal, by which the contents of counter 1 are incremented. When the conditional jump command is executed at the beginning of the cycle, a single signal of the conditional junction coj, which enters the inputs of the first 3 and third 9 elements, is formed at the input 23 of the device. If the progress of the cyclic portion is not disturbed, that e is not passed one command and no one command is completed, all bits of counter 1 are in one state. From the output of the AND-NOT 2 element or the input of the AND 3 element, a zero signal comes in and a single signal is not generated at its output.

If at least one command is executed when executing a cyclic program section, then at the output of the element AND-NOT 2 a single signal is formed, which will form at the output of the element And 3 also a single signal, which is. ry enters the input of the element OR 5, the output of the element OR 5 forms a single signal, which arrives at the output 21 of the device and indicates an error during the program. If at performance of programs. the command is completed before the jump command is executed at the beginning

cycle to the second input of the element OR 5 from the transfer output from the higher bit of counter 1, a single signal is received at the level of 21 yqrpoftcTBa a single signal of the signal is generated. A single signal of the conditional transition

-CO a from input 23 enters the input of an element AND 9, which is open to the resolving potential, from the output of the trigger

11 s At the output of the element And 9, a signal is generated, which arrives at the counting input of the counter 7j at which its content is increased by one.

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Q

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When exiting the cycle, a conditional jump command in the control unit of the digital computer analyzes the special command executed first. after exiting the cycle, In field x 27 and 28 of this special command, 1 is recorded, which in the form of single signals comes from the inputs 18 and 20 of the device to the first and second inputs of the And 12 element, which are open at the first input by the potential from the output of the 11 trigger Element And 12 it triggers and outputs a signal that sets trigger 11 in O and enters input element E 10. If the program flow is not disturbed, i.e. Since the cycle is completed a specified number of times, all bits of counter 7 are in a single state. From the output of the element AND-NE 8 to the input of the element AND 10, a zero signal arrives and no single signal is generated at its output. If the cycle is one hundred times smaller than the specified one, then during the code from the cycle not all bits of the count 7 are in a single state, the output signal of the IS-NE 8 has a single signal that will form the single the signal that arrives at the input of the element OR 5. At the output of the element OR 5, a single signal is generated, which is fed to the code 21 of the device and CBi is excited about an error during the program. If the program is looped, then a second signal is sent to the second input of the SHSh 5 from the transfer output from the high bit of the counter 7 and a single signal is generated at the output 21 of the device.

The proposed device is able to control the course of programs in the presence of interruptions. When interrupts are processed, the contents of the main machine registers are stored in memory, C programs 16 and 24 of the program control device connected to the unit bits of counters 1 and 7, respectively, the codes on the counters are received and stored in the corresponding memory cells cars. On returning to the interrupted program, it is necessary to recover information on counters 1 and 7 that is at the moment of arrival of the interrupt signal. This is; by calculating a special command, in the fields x 30 and 31 of which codes recorded in the memory are recorded.

Claims (1)

 Invention Formula The device for controlling the progress of programs according to the author, St. No. 89-2446, characterized in that, in order to expand the functionality of the device by checking the execution of cyclic program sections, a second counter, a second AND-NOT element, a third, fourth, and five AND elements and a trigger are entered into it, and the trigger input is combined with the installation input of the second counter and connected to the input of the control sign of the device cycle, the direct output of the trigger is connected to the first inputs of the third and fifth And elements, the second input of the third And element is combined with the first input of the first And element and the to the entrance priznaRedaktor N.Gunko Compiled by I.Safronova Tehred M. Khodanich Proofreader T. Kolb Order 3707/49 Circulation 671 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Moscow, Zh-35, Raushsk nab., d, 4/5 Production and printing company, Uzhgorod, st. Project, 4 ka repeat device cycle, the output of the third element And is connected to the score-. input of the second counter, the group of information inputs of which is a group of information inputs of the device, information outputs  the second counter is connected to the corresponding inputs of the second element 10 AND-NOT and form a group of information outputs of the device, the code of the second element AND-NOT is connected to the first input. the house of the fourth element And, the second entrance of which is combined with zero f5 by the trigger input and connected to the output of the fifth element And, the second and third inputs of which are connected respectively to the inputs of the condition sign and the sign of control of the device transition, the counter overflow output and the output of the fourth AND element are connected to the second and fourth inputs of the OR element, respectively. 20