JPS62229339A - Diagnosis system for microprogram - Google Patents

Abstract

PURPOSE:To shorten the diagnosis executing time by transferring a microprogram stored in a main memory of a main controller to a RAM of a device to be diagnosed and executing this microprogram through said device to attain the self-diagnosis. CONSTITUTION:A main controller 11 designates a device 13 to be diagnosed and carries out the STREG instruction of the diagnosis program of a main memory 12. Thus a microprocessor 15 of the device 13 is started. Then a microprogram (i) is sent to the device 13 from the memory 12 and then written to a RAM 14 under the control of the microprocessor 15. Then the EXC instruc tion of the diagnosis program is executed and the processor 15 of the device 13 is started for execution of the program (i) written to the RAM 14. Thus the seld-diagnosis of the device 13 is carried out and the result of this diagnosis is sent back to the controller 11.

Description

[Detailed Description of the Invention] [Summary] A microprogram stored in the main memory of a main controller is transferred to a random access memory of a device to be diagnosed such as a magnetic disk control device, and the microprogram is transferred to the device to be diagnosed. The self-diagnosis is performed by executing the self-diagnosis, and the diagnostic execution time can be shortened.

[Industrial application field]

The present invention relates to a microprogram diagnosis method in which a device to be diagnosed executes a microprogram to perform self-diagnosis in response to instructions from a main controller.

[Conventional technology]

In electronic switching systems equipped with various peripheral devices such as magnetic disk control devices that have built-in microprocessors, the main IT device diagnoses these devices. The test data is edited according to the diagnostic program, the test data is sequentially transferred to the device to be diagnosed under the control of the main controller, the test data is processed by the device to be diagnosed, the results are transferred to the main controller, and the test data is transferred to the device being diagnosed. The purpose was to search for failures in equipment.

[Problem that the invention seeks to solve]

As mentioned above, in the conventional diagnostic method, the main controller edits the test data and transfers it to the device being diagnosed, which has the drawback of increasing the overhead of the main controller and lengthening the diagnostic execution time. Ta.

Furthermore, since different test data editing and execution processes are performed depending on the type of device to be diagnosed, there is a drawback that test data cannot be easily created.

The present invention improves the above-mentioned conventional drawbacks, and aims to enable diagnosis to be performed in a short time.

[Means for solving problems]

The microprogram diagnosis method of the present invention transfers a microprogram to a device to be diagnosed having a microprocessor to execute diagnosis, and will be explained with reference to FIG. The microprogram stored in the main memory 2 of the main controller 1 is transferred to the random access memory (RAM) 4 of the device to be diagnosed 3 having a microprocessor (MPU) 5 such as a magnetic disk controller. The device to be diagnosed 3 executes the microprogram written in the microprogram 4 to perform diagnosis.

[Operation] The microprogram stored in the main memory 2 packages test orders, execution processing, etc., and is transferred to the random access memory 4 of the desired device to be diagnosed 3 under the control of the main controller 1. When the main controller 1 issues an execution instruction, the device 3 to be diagnosed starts self-diagnosis under the control of the microprocessor 5, and editing of test data in the main side 411 + device 1 is not necessary. This reduces diagnostic time.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is an explanatory diagram of the operation of the embodiment of the present invention, in which 11 is the main controller, 12 is the main memory, 13 is the device to be diagnosed,
4 is a random access memory (RAM), and 15 is a microprocessor (MPU). The diagnostic program stored in the main memory 12 includes a 5TREG instruction for storing a microprogram, an EXC instruction for executing the microprogram, and packaged microprograms i, j, . . . has been done.

The main control device 11 specifies the device to be diagnosed 13 by device number, etc., and executes the 5TR of the diagnostic program in the main memory 12.
■Execute the EG command. Thereby, the device to be diagnosed 13
microprocessor 15 is activated. Then, the microprogram i for the device to be diagnosed 13 in the main memory 12 is transferred (2). This transferred microprogram i is written into the random access memory 14 under the control of the microprocessor 15. Then, execute the EXC command of the diagnostic program. As a result, the microprocessor 15 of the device to be diagnosed 13 is activated,
The microprogram i written in the random access memory 14 is executed to perform self-diagnosis. The diagnosis results are sent back to the main controller 11.

A microprogram to perform such diagnosis
Jr... can be packaged according to the type of the device to be diagnosed 13 and stored in the main memory 12. In that case, the microprogram i corresponding to the device number of the device to be diagnosed 13, etc. , J+, and so on. The random access memory 14 of the device to be diagnosed 13 is used to read and write various data when performing normal control, and the aforementioned microprogram is written into that area during diagnosis.

In addition, it is packaged to correspond to the diagnostic steps of the device to be diagnosed 13, for example, as described above, the microprogram i
Run the self-diagnosis and if the result is good,
Information indicating the diagnosis result 'OK' is sent back to the main control device 11, whereby the main control device 11 transfers the next microprogram j to the device to be diagnosed 13, and executes this microprogram j in the device to be diagnosed 13. It is possible to perform a self-diagnosis by repeating the self-diagnosis and to diagnose all functions of the device to be diagnosed 13. If the self-diagnosis fails, it can be determined that the failure is at a location corresponding to the diagnosis step.

FIG. 3 is a block diagram of an embodiment of the present invention, showing a duplex configuration. 20.30 is the main memory (MMo, MML), 21.31 is the main controller (
cco, cc, ), 22.32 is the channel control device (C
HCo, CHC+), 23.33 is a magnetic disk control device (DKCo, DKc,), and 24.34 is a magnetic disk device (DK).

, DK, ), 25.35 is a magnetic tape controller (TPC)
o, TPO+), 26.36 is a magnetic tape device (TPO+), 26.36 is a magnetic tape device (TPO+)
Po, TP+), 27 is a microprocessor (MPU)
, 28 is a random access memory (RAM).

Main memory 20, 30 can be accessed from main controller 21, and channel controller 2
2.32, one of which is the active system and the other is the backup system.

Further, magnetic disk devices 24 and 34 are controlled by magnetic disk controllers 23 and 33, and data is written and read. Similarly, magnetic tape controller 25.35
The magnetic tape devices 26 and 36 are controlled to write and read data.

When the 0 system including the main controller 21 (CCo) is the standby system, the 1 system including the main controller 31 (CCV) is the active system, and the standby magnetic disk controller 23 is the device to be diagnosed, the main controller The 5TREG command of the diagnostic program described in FIG. 2 is executed from the device 31 to the magnetic disk control device 23 via the channel control device 22, and the microprocessor 27 of the magnetic disk control device 23 is activated. Then, the microprogram corresponding to the magnetic disk controller 23 is transferred from the main memory 30 and written into the random access memory 28.

Next, the EXC instruction of the diagnostic program is executed, and the microprogram written in the random access memory 28 is executed to perform self-diagnosis. The diagnosis results are transferred to the main control device 31 via the channel control device 22.

When the magnetic tape control device 25 is used as the device to be diagnosed, self-diagnosis is executed in the same manner as described above.

When the microprogram transferred from the main memory 30 to the random access memory 28 is packaged for each diagnostic step, self-diagnosis is performed by transferring the microprogram corresponding to each diagnostic step to a plurality of devices to be diagnosed. It is also possible to

〔Effect of the invention〕

As explained above, the present invention transfers the microprogram of the diagnostic program in the main memory 2 to the random access memory 4 of the device to be diagnosed 3 under the control of the main controller 1, and writes the microprogram in the random access memory 4. Since the main controller 1 does not need to edit test data or the like, it is possible to shorten the diagnosis time. In addition, by packaging the microprogram to be transferred, it is possible to facilitate diagnostic processing for different types of devices to be diagnosed, and it is also possible to package the microprogram to correspond to the diagnostic steps, so it is possible to perform self-programming at any diagnostic step. Diagnosis can also be performed.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the principle of the present invention, FIG. 2 is an explanatory diagram of the operation of an embodiment of the invention, and FIG. 3 is a block diagram of an embodiment of the invention. 1.11 is the main controller, 2.12 is the main memory, 3.
13 is the device to be diagnosed, 4.14 is the random access memory (RAM), and 5.15 is the microprocessor (MP
U).

Claims (1)

[Claims] The microprogram stored in the main memory (2) of the main controller (1) is transferred to the random access memory (4) of the device to be diagnosed (3), and the microprogram stored in the random access memory (4) is A microprogram diagnosis method characterized in that the device to be diagnosed (3) executes a microprogram to perform diagnosis.