JPH0887426A - Self-diagnosis state display system - Google Patents

Abstract

PURPOSE: To prevent the trouble of a processor in test execution or abnormality of a test program from being overlooked by displaying a stage before a test is started, a stage at the start of the test, and a stage at the end of the test at a display part, state by state, when each test for diagnosis is conducted. CONSTITUTION: If trouble occurs to a device such as a computer device or communication device including a processor and the device stops, the processor 1 actuates a self-diagnostic part 2. The self-diagnostic part 2 is provided with a test execution part 3, which executes plural tests corresponding to respective units 5 in order. When the test execution part 3 is actuated to take a self- diagnosis as to one unit, a preparation display means 3a displays 'preparation display' showing that preparations are completed first. After this display, the test start means 3b of the test execution part 3 starts testing the 1st object unit and then a start display means 3c operates to display 'test start' at the display part 6 by referring to a table 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-diagnosis status display system. Microprocessors are used in information processing devices, communication devices, and the like. In a device using such a processing device, when a hardware or software error (fault) occurs, a self-diagnosis program is started to detect the cause of the fault and the operation of each part is checked in order. In many cases, the failure location can be detected using the result of this diagnosis. However, with this method, when a failure occurs in a device such as a processor, which is the center of processing, it is difficult to detect it by the diagnostic operation of the self-diagnosis program, and improvement thereof is desired.

[0002]

2. Description of the Related Art FIG. 5 is an explanatory view of a conventional example. In FIG. Is a hardware block diagram, B. Is the operation flow when a failure occurs.

A. The hardware configuration shown in can be configured as a device for performing various processes such as a computer device and a communication control device, and a large number of units 1, units 2, ... Units are connected. Unit 1
~ Unit n is connected to, for example, a RAM, a ROM, a channel device, a disk device, a display, a device to be controlled corresponding to the purpose of use of this device, and an interface circuit.

Such a device is a microprocessor 5
0 is processed by the program stored in the memory (stored in one of the units), and the necessary input / output operation is performed.
B. of FIG. Is A. This is a general operation flow executed when a failure occurs in the device as shown in FIG. When a failure occurs (S1 in B. of FIG. 5), the self-diagnosis program stored in the memory in advance is activated (S2).

The self-diagnosis program sequentially tests the function of each unit connected to the microprocessor 50 by the test program to determine whether or not an error is detected. For example, for a memory, write the specified data, read the data from the same address, compare the write data and the read data,
Normal / abnormal is detected by matching or not matching.

Initially, n = 1 is set, and self-diagnosis is performed on the unit 1 by executing the test 1 (at step S3).
It is determined whether or not an error is detected (S4), and when an error is detected, the self-diagnosis operation is stopped (S5), and an error code obtained by encoding the content of the error is displayed on the display (S6). If it is normal, the end of the test 1 is displayed (at step S7), and n is incremented by 1 (at step S8). In this case, n = 2, and the test 2 for self-diagnosis of the unit 2 is started. Similarly, every time the test is completed, a message is displayed, and if no error is detected, the tests up to the unit n are executed.

[0007]

When performing diagnosis by the above-mentioned conventional self-diagnosis program, the self-diagnosis program is executed by the microprocessor and the error code is stopped to display the error code. However, when there is a failure in the microprocessor, the device does not work at all, so the error code cannot be displayed, and there is the problem that it is not possible to determine what is the cause. It should be noted that the same problem occurs when there is an abnormality in the diagnostic program.

Further, when a failure occurs in the microprocessor during the execution of the self-diagnosis program, the operator cannot identify the hardware abnormality. In this case, since only the number of completion of the self-diagnosis test is displayed, the operator erroneously determines that an abnormality (fault) has occurred in the units in the next order after completion. Probability is high. However, in the case of an abnormality of the microprocessor, the cause of the abnormality cannot be determined after all, because the abnormal unit is normal even if checked.

When the microprocessor intermittently fails, if the self-diagnosis program is executed again, the test is normally executed and the failure of the microprocessor itself is overlooked. was there.

The present invention can prevent erroneous indication of the cause of failure when a failure occurs in the processing device itself such as a microprocessor during execution of self-diagnosis or an abnormality in the diagnostic program. The purpose is to provide a self-diagnosis status display method that can be performed.

[0011]

FIG. 1 is a block diagram showing the principle of the present invention. In FIG. 1, 1 is a processing device such as a microprocessor, 2 is a self-diagnosis unit, 3 is a test execution unit, 3a is a preparation display unit, 3b is a test start unit, 3c is a start display unit, 3d is a test end detection unit, 3e is an end display means, 4 is a table, 5 is each unit such as RAM, ROM, disk device, etc., which is connected to the processor 1, and 6 is a display unit.

According to the present invention, when each test for diagnosis is executed in the self-diagnosis section, a display is made on the display section in each of the states before the test is started, the test is started and the test is ended. By doing so, it is possible to prevent the failure of the processing device during the test execution or the abnormality of the test program from being overlooked.

[0013]

In FIG. 1, a computer device including a processing device,
When a device such as a communication device fails and stops, the processing device 1 activates the self-diagnosis unit 2. In the self-diagnosis section 2,
A test execution unit 3 is provided, and executes a plurality of tests corresponding to each unit 5 in order. When the test execution unit 3 is activated to perform self-diagnosis for one unit, the preparation display means 3 indicates that the preparation state is completed first.
The control displayed by a is performed. That is, the table 4 stores the character data displayed during the test execution in the self-diagnosis unit 2, and the preparation display means 3a displays the table 4
The corresponding "preparation display" character is extracted from the display unit 6
Perform the control displayed on. If this display is stopped (not displayed), there is a high possibility that the processing device has a fault, and there is a possibility that the program of the diagnostic execution unit is abnormal. However, the probability is low because the diagnostic program is sufficiently debugged beforehand.

After this display, the test starting means 3b of the test execution section 3 starts the test for the first unit to be tested, and then the start display means 3c operates to refer to the table 4 and Display "Start test" 6
Perform the control displayed on. After this, the test end detection means 3
Detects whether d is currently testing the unit. When the end of the test is detected, the end display means 3e controls the table 4 to display "test end" on the display unit 6.

When the test for one unit is completed, the test execution unit 3 is subsequently activated for the next unit, the status of each diagnosis is displayed on the display unit 6 in the same manner as above, and all necessary tests are completed. The tests are sequentially executed until the above.

In FIG. 1, after the preparation state is completed and the "preparation display" is performed, when the test is started, the state of "testing" is displayed and the display is stopped at the end of the test. You can

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The self-diagnosis status display system of the present invention can be implemented in various computer devices including a program-controlled processor, communication devices such as exchanges, and various control devices. The example of the system configuration implemented is shown.

In FIG. 2, 20 is a microprocessor, 21 is a program control unit in the microprocessor,
22 is a loader for loading the self-diagnosis program from the disk device into the memory (RAM), 23 is a bus, 2
Reference numeral 4 denotes a disk device (indicated by DISK) for storing a program including a self-diagnosis program, 25 denotes RAM, 26 denotes ROM, 27 denotes a display unit, and 28 and 29 denote various input / output units.

The display unit 27 is, specifically, a multi-digit character display attached to a display device such as a CRT for displaying characters and images on the screen or a device (computer, communication device, etc.) that constitutes this system. It can be configured by a display panel including an element (liquid crystal or LED).

FIG. 3 is a processing flow of the embodiment, which is executed by the program control unit 21 of the microprocessor 20 in the configuration shown in FIG. FIG. 4 is a display example of the self-diagnosis status displayed on the display unit.

If the device shown in FIG. 2 stops due to an error for some reason, the self-diagnosis operation is started. First, the loader 22 of the microprocessor 20 is driven to execute the self-diagnosis program from the disk device 24 to the RAM 2
5 is loaded (S1 in FIG. 3). The loaded program includes a display data table (corresponding to table 4 in FIG. 1) in which each display data for displaying the self-diagnosis status is stored.

When the program loading is completed, display control for displaying the "preparation" state is performed as a process before starting the first test (test 1) determined by the program (at step S2). In this case, the corresponding display data is extracted from the display data table and displayed on the display unit 27. Therefore, even if self-diagnosis is activated,
If the display of the ready state is not output to the display unit 27, it is possible to suspect a failure of the microprocessor 20.

When the preparation state is displayed, the program of test 1 is activated (S3 in FIG. 3), and subsequently, control for displaying the "start" state is performed (S4). At this time, test 1 is started. When the test 1 is started, the target unit (the bus 23 in FIG.
The test is performed on one of the devices connected to. It is judged whether or not the test is finished (at step S5), and when it is finished, control for displaying the "finished" state is performed (at step S6). After this, it is judged whether or not all the tests have been completed (at step S7), and if not completed, the next test (in this case, test 2) is performed (at step S8). Also in the next test, the control for displaying the "preparation" state is first performed (S2 of the same), and thereafter, the same processing as S3 to S7 is executed.

When all the tests are completed, the display control of the "start all test end process" state is performed (S9 in the same step), and then the all test end process is started (S10) and the all test end process is completed ( By the step S11), display control of the "all test end processing completed" state is performed (step S12), and the self-diagnosis processing ends.

It is possible to change the processing flow of FIG. 3 to display "test is being executed". In that case, after the display of "Ready" status, "Start" of test 1
When the status is displayed, "Test 1 is being executed" is displayed, and when it is finished, the processing of "Test 1 is being executed" is stopped.

FIG. 4 shows a specific display example of the self-diagnosis status. This example corresponds to the processing of FIG. 3 described above, and “T01P” shown in a of FIG. 4 represents the preparation state of the test 1, and if this display does not occur, there is a high possibility that the microprocessor 20 is in failure. However, there is a possibility that the diagnostic program is abnormal, but such an abnormality can be confirmed by debugging or program trace.

4B and 4C show the start and end states of the test 1, after which the preparation state of the test 2 is displayed as shown in d, and the start of the test 2 is shown as e and f. Each ending status is displayed. Subsequently, although not shown, the "ready" state, the "start", and the "end" are similarly displayed for each of the tests 3, 4, and the like.

When all the tests are finished, the state of "start of all test end processing" is displayed as shown in g of FIG. 4, and when this processing is completed, the state of "all test end processing completion" shown in h of FIG. 4 is displayed. Is displayed.

[0029]

According to the present invention, it is possible to recognize a failure before starting of a microprocessor which has been overlooked by the conventional self-diagnosis.

Further, since it is possible to confirm whether there is an abnormality between the test items, it is possible to reduce the possibility of pointing out an erroneous suspicious point. Furthermore, the tracing effect can be improved when debugging the diagnostic program.

[Brief description of drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is a diagram showing an example of a system configuration in which the present invention is implemented.

FIG. 3 is a diagram showing a processing flow of the embodiment.

FIG. 4 is a diagram showing a display example of a self-diagnosis status displayed on a display unit.

FIG. 5 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processor 2 Self-diagnosis part 3 Test execution part 3a Preparation display means 3b Test start means 3c Start display means 3d Test end detection means 3e End display means 4 Table 5 Unit 6 Display part

Claims (6)

[Claims] 1. In a self-diagnosis status display method for a device including a processing unit and a display unit together with a plurality of units, a self-diagnosis unit provided in the processing unit performs a self-diagnosis test on each connected unit. A self-diagnosis status display method, comprising: an execution unit, wherein the test execution unit displays the preparation state on the display unit at the time of starting each test, and displays that the test is in progress during the subsequent tests. 2. The test execution unit according to claim 1, wherein the test execution unit displays the preparation state on the display unit at the time of starting each test, displays the start state on the display unit at the start of the subsequent test, and starts the test, A self-diagnosis status display method characterized in that the end state is displayed on the display section at the end. 3. The processing device according to claim 1, wherein the processing device loads a self-diagnosis program from an external storage device, and executes a test of each unit connected to the processing device according to the self-diagnosis program. A self-diagnosis status display method characterized by displaying each status on the display before starting and during testing. 4. The method according to claim 3, wherein when performing a test of each unit connected to the processing device according to the self-diagnosis program, each state is set before a test is started, at a start time, and when a test is ended. A self-diagnosis status display method characterized by displaying on a display unit. 5. The display device according to claim 1, wherein a display device for displaying a screen is connected to the processing device, and each state of the test execution unit is displayed on a part of a screen of the display device. Self-diagnosis status display method. 6. The self-diagnosis status display system according to claim 1, wherein the display unit is composed of a character display element having a plurality of digits necessary for displaying each state of the test execution unit. .