JPS6325743A - Evaluation system for microprogram - Google Patents

Abstract

PURPOSE:To completely evaluate the bug of a microprogram by writing the executing frequency of the microprogram to an error correction code part and deciding the executing frequency of an error correction code part of the microprogram after an evaluation program is run. CONSTITUTION:A memory circuit 1 stores a microprogram containing an error correction code part. When this microprogram is carried out, the executing frequency of the microprogram is written to the error correction code part. The contents of the circuit 1 are read out by a service processor 10 through a data signal line 100 after an evaluation program is run. Thus the executing frequency of the error correction code part is decided for the microprogram.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to the evaluation of microprograms, and more particularly to the evaluation of nine microprograms equipped with an error correction code section.

(Conventional technology) Conventionally, evaluation of this type of microprogram was performed simply by running the evaluation program, so evaluation at the machine language level was progressing, but at the microprogram level, it was difficult to evaluate the number of times each microprogram was passed. No progress has been made in evaluating whether

(Problems to be Solved by the Invention) The conventional microprogram evaluation method described above only executes a machine language level evaluation program, and it is important to note that it is not possible to satisfactorily evaluate all microprograms.

Therefore, after evaluating the microprogram, the microprogram? After the installed device was shipped to the UK, bugs were sometimes discovered in the microprogram because it had not been evaluated.

Is the purpose of the present invention a microprogram that is equipped with all error correction codes in evaluation mode? After reading and counting up the error correction code section until it reaches the maximum value, it is written to the error correction code section of the memory circuit of the microprogram.After completing the evaluation, the service processor reads out the contents of the memory circuit and detects the error. It is an object of the present invention to provide a microprogram evaluation method that eliminates the above-mentioned drawbacks and completely evaluates all bugs in a microprogram by determining directly above the correction code section.

(Means for Solving Problems) The microprogram evaluation method according to the present invention includes a memory circuit, an address register, and a frame 7) - a register, a flip-flop, an AND gate, a counter, and a service processor. It is constructed with the following features.

The memory circuit is for storing the entire microprogram including the entire error correction code section.

The address register is a device that stores the address of the memory circuit, and the command register is a command that is output from the memory circuit. It is for storing.

The flip-flop is for resetting the error correction code part of the memory circuit.Is the microprogram executed after resetting the AND game H-j flip-flop?
This is for setting the evaluation mode.

The counter is used to read commands from the storage device to the command register in the evaluation mode, count up until the error correction code section kA reaches a large value, and then write the command to the error correction code section of the storage circuit.

After the service processor completes the evaluation, the contents of the memory circuit! This is for determining all the values in the error correction code section.

(Example) Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the microprogram evaluation method according to the present invention. In FIG. 1, 10 is a service processor, and 11 is a microprogram control device. microprogram controller'l
In ll, 1 is a microprogram storage circuit, 2
is an address register of the memory circuit 1, 3 is a microprogram command register for holding the output of the memory circuit 1, and 4 is a command register for microprogram evaluation mode from the service processor 10 to the microprogram control device 11. 5 is a counter for counting up the error correction code W15 of the microprogram set in the command register 3 until it reaches the maximum value; 6 is an error correction code section of the storage circuit 1; In order to rewrite, j and M of memory circuit 1 are included. Ninth AN enabled by the output of flip-flop 4
This is the D gate.

FIG. 2 is a timing diagram illustrating the operation of the device shown in FIG. 1.

The operation of FIG. 1 will be explained below with full reference to FIG. 2.

In the third phase of the first machine cycle, microprogram address a is set in address register 2. Second
In the first phase of the machine cycle, the contents of the memory circuit I are read out and set in the command register 3 as a microprogram command A. In the second phase of the second machine cycle, the count value of the error correction code section of the microprogram command A set in the command register 3 is counted up through the counter 5 and written into the error correction code section of the memory circuit 1. . The next address b of microprogram command A is the third address of the second machine cycle.
It is set in address register 2 in phase. When the microprogram is executed in this manner, the number of executions of the microprogram is written in the error correction code section.

After the evaluation program has run, the contents of the memory circuit 1 are read out by the service processor 10 through the entire data signal line 1°, and the number of executions of the error correction code portion of the microprogram is determined.

By doing the above classification, you can find all microprograms with low evaluations.

(Effects of the Invention) As explained above, the inventive feature is that in the evaluation mode, after reading out the microprogram "It" with an error correction code and counting up the error correction code section until it reaches the maximum value, the microprogram storage circuit After the evaluation is completed, the service processor reads the contents of the memory circuit and determines the value of the error correction code section, thereby calculating the number of executions using the error correction code section of the microprogram. This has the effect that unevaluated parts of a microprogram can be easily known.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the microprogram evaluation method according to the invention. FIG. 2 is a timing diagram showing the entire operation of FIG. 1. 1...Memory circuit 2...Address register 3...
・Command register 4...Flip-flop 5...Counter 6...
・AND gate 10...Service processor 11...Microprogram control device 100...Signal line

Claims (1)

[Claims] a memory circuit for storing a microprogram having an error correction code section; an address register for storing an address of the memory circuit; and a command register for storing a command output from the memory circuit;
a flip-flop for resetting the error correction code section of the memory circuit; an AND gate for putting the execution of the microprogram into evaluation mode after resetting the flip-flop; a counter for reading to the command register, counting up the error correction code section until it reaches a maximum value, and writing it to the error correction code section of the storage circuit; and after the completion of the evaluation, the contents of the storage circuit are A microprogram evaluation method comprising: a service processor for reading and determining the value of the error correction code section.