SU516040A1 - Device for controlling the sequence of the program modules - Google Patents

Description

This invention relates to the field of computing. There are known devices for controlling the sequence of the program modules, containing a control signal generation unit, a matrix for remembering module states, two AND units, a comparison unit, and a module number registers unit whose input is connected to the information input of the device, and the outputs are connected to the first group input block comparison. The second group of block inputs is connected to the input of the module of the device program. The output of the control signal generating unit is connected to the first inputs of the rows of the memory module of the module states. The known devices do not allow monitoring the timeliness of the inclusion of the program modules in the work. The aim of the invention is to expand the functionality of the device. The device differs from the known ones in that it contains two OR elements, the output of the first of which is connected to the output permit of executing the next module of the program of the device, and the output of the second one - with the output of erroneous switching the module into operation of the device. The inputs of the first element OR are connected to the first outputs of the columns of the memory matrix of the modules and the inputs of the control signal generation unit, and the inputs of the second element of OR are connected to the second outputs of the columns of the memory module of the comparison module, information outputs of which connected to the first groups of inputs of blocks of elements "And, the second groups of inputs of which are combined and connected to the corresponding control inputs of the device. The outputs of one block of elements "I" are connected to the second inputs of rows of the memory matrix of the module states, the inputs of the columns of which are connected to the outputs of another block of elements "I. The block diagram of the device for controlling the sequence of the program modules is shown in the drawing. The device contains a control signal generation unit 1, a module state memory 2, a module number registers unit 3, a comparison unit 4, information input 5, module reception input 6, control inputs 7 and 8, and OR 9 and 10 elements, output 11 of permitting the execution of the next module of the program, output 12 of erroneous switching the module into operation, blocks of elements "And 13 and 14.

The device for controlling the sequence of the following program modules works as follows.

Each column of the memory module memory module is associated with a program module. The rows of the memory module memory module correspond to the module predecessors. A unit is recorded in separate rows of each column if the module is dependent on the predecessor module, and zero if it is not. The initial information is written into the memory module of the module states using control signals generated by the scheduler. Before the next module of the program is put into operation, the absence of ones in the corresponding column is checked. If there is at least one unit in this column, then it is concluded that not all the predecessor modules are implemented and the "Incorrect module activation into operation" signal is generated.

The device operates in three modes: recording dependencies of the next module of the program, monitoring the correctness of switching the module into operation, and erasing the dependencies of the module after it has been executed.

In the mode of recording dependencies of the next module of the program, the device operates as follows.

Input 6 receives the number of the module for which the dependence is to be written, and input 8 receives the control signal. The comparator compares the 3 modules and the numbers received at input 6. A signal is generated from one of the outputs of the comparator, which, through one of the elements of AND 14, excites the corresponding column of the memory module of the module states. At the same time, from block 1, the unit write signals are sent to the rows of the matrix corresponding to the moduli of the predecessors, under the action of which units are recorded at the intersection of the excited column and rows.

In the mode of checking the correctness of switching on the modules, the excitation of a column of the memory matrix of the states of the modules is performed in the same way as in the recording mode of communications. Then, under the action of control signals from block 1, the dependence of the module corresponding to the excited column on the predecessor modules is checked. If there are no units in this column, the first of its outputs is excited, resulting in a signal at the output of the element "OR 9", permitting the execution of the next program module. At the same time, a warning signal is issued to block 1 to fill in the number of the program module to be put into operation. If there is a unit in this column at least in one of the rows, the second output of this column is excited, as a result

A module erroneous turn-on signal appears at the output of the second element OR 10. If, in the process of checking that the module is turned on correctly, the module number to be turned on, input 6 does not match any of the program module numbers recorded in block 3, a signal appears at the output of the block mismatch 4 comparison, which, passing through the element "OR 10", provides for the formation of a signal of an erroneous switching on of the module at the output 12.

In the mode of erasing dependencies of a program module after its execution, input 6 receives the number of an already implemented module

program, and the input 7 - control signal. By comparing the numbers of the modules in block 4 and the operation of one of the elements in block 13, one of the rows of the memory matrix of the states of modules 2 is excited, after which, under the action of the control signal from block 1, units are erased in all columns of the excited row.

Claims (1)

Invention Formula A device for controlling the sequence of the program modules containing a control signal generation unit, a memory module of the module states, two AND blocks, a comparison block and a module number registers block whose input is connected to the information input of the device, and the outputs are connected to the first group the inputs of the comparison unit, the second group of inputs of which is connected to the input of the receiving module of the device’s program module, the output of the control signal forming unit is connected to the first inputs of rows of the memory matrix of the module states, characterized in that, in order to expand the functionality, it contains two elements "OR, the output of the first of which is connected to the output of permitting the execution of the next module of the program of the device, and the output of the second one with the output of the erroneous switching on of the module in the operation of the device; the inputs of the first element OR are connected to the first outputs of the columns of the memory matrix of the module states and the inputs of the control signal generation unit, and the inputs of the second element OR are connected to the second outputs of the columns of the memory matrix of the module state and the output of the comparison block, whose information outputs are connected to the first groups of inputs of the blocks “And”, the second groups of inputs of which are combined and connected to the corresponding device control inputs; the outputs of one block of elements PI are connected to the second inputs of rows of a memory matrix of module states, the inputs of which columns are connected to the outputs of another block of elements I. eight - eleven Tz