JPH0619746A - Fault diagnostic device - Google Patents

Abstract

PURPOSE:To estimate the cause of a fault by collecting and displaying trace information on an operation environment by a maintenance tool under the control of an internal central processing unit when a system breaks down. CONSTITUTION:When only the central processing unit 1 breaks down, a man- machine interface 5 collects respective items of trace information stored in the trace memories of a program trace device 3, a bus monitor device 4 and an RAS trace device 8, displays them in CRT 6 and estimates the fault cause of the central processing unit 1. When a system bus S1 breaks down at the same time as the central processing unit 1 or only the system bus S1 breaks down, for example the man-machine interface 5 cannot collect respective items of trace information. In such a case, the maintenance tool 85 connected to a maintenance port collects and displays operation environment trace information stored in the trace memory by using the central processing unit in the RAS trace device 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a failure diagnosing apparatus which provides information necessary for diagnosing a cause of failure of a computer, a controller and the like.

[0002]

2. Description of the Related Art FIG. 5 is a block diagram showing a conventional failure diagnosing device, and FIG. 6 is a block diagram showing a detailed structure of an operating environment tracing device shown in FIG. 5. In FIG. 5, 1 is a center of a computer or a controller. A processor, 2 is a main memory,
3 is a program trace device for tracing the program executed by the central processing unit 1; 4 is the system bus S1
Is a bus monitor device that traces the operating status of the.

Reference numeral 5 is a man-machine interface for collecting information from the program trace device 3 and the bus monitor device 4 for diagnosing the cause of a failure at the time of system failure. 6 is a CRT for displaying data at the time of failure. Is the above operating environment tracing device for tracing the operating environment of its own system such as a computer and a controller.

In FIG. 6, reference numeral 71 is a trace memory for storing the result of tracing the operating environment, and 72 is for viewing the environment trace result at the same time as other trace information.
A clock for tracing the time of the environment information, and 73 are analog / digital converters for converting the input signals from the sensors measuring the operating environment into digital data.

Further, 74 is a temperature sensor for measuring the temperature in the operating environment, 75 is a humidity sensor for measuring the humidity in the operating environment, and 76 is a power source used by a computer or controller. A primary power supply voltage measuring device for measuring the primary side voltage, S2 is an internal bus of the operating environment tracing device 7, and connects the clock 72 and the analog / digital converter 73 to the trace memory 71 for storing the trace result. is there.

Next, the operation will be described. In a normal operation, the central processing unit 1 executes a program while referring to an internal memory (not shown), and the execution trace of the program is constantly traced by the program tracing device 3.
The access to the main storage device 2 by the central processing unit 1 via the system bus S1 is traced by the bus monitor device 4.

Further, the operating environment tracing device 7 traces the operating environment (temperature, humidity, primary power supply voltage) of its own system at regular intervals. If a failure occurs in the central processing unit 1, the operating environment tracing device 7 The machine interface 5 collects each trace information stored in the trace memory 71 of the program trace device 3, the bus monitor device 4 and the operating environment trace device 7 and displays it on the CRT 6 to estimate the cause of failure of the central processing unit 1.

[0008]

Since the conventional failure diagnosis apparatus is constructed as described above, when estimating the cause of failure of the central processing unit of the computer or controller, the central part from each trace information to the failure is estimated. It is possible to know the operating status of the processing unit 1 and the system bus S1 and the operating environment of the system. However, when the system bus S1 and the man-machine interface together with the central processing unit 1 fail, no trace information can be collected and the system There was a problem that it was difficult to estimate the cause of the failure.

The invention of claim 1 is to solve the above problems, and enables collection and display of each trace information even when the system bus or man-machine interface fails. An object of the present invention is to obtain a failure diagnosis device that can easily estimate the cause of the failure.

It is an object of the present invention to provide a failure diagnosing device capable of directly collecting and displaying each trace information without using a system bus.

[0011]

According to a first aspect of the present invention, there is provided a failure diagnosing apparatus which includes a program tracing apparatus for tracing a program executed by a central processing unit and an access to a main memory by the central processing unit. A bus monitor device for tracing via the system bus is provided, and the RAS trace device is made to trace the operating environment of the own system,
The trace result is stored in the internal trace memory, and when the system fails, the maintenance tool collects and displays the trace information of the operating environment stored in the trace memory under the control of the internal central processing unit. It was done like this.

According to a second aspect of the present invention, there is provided a failure diagnosing apparatus which traces a program executed by a central processing unit and a trace of an access made by the central processing unit to a main memory via a system bus. A bus monitor device is provided, and the RAS trace device is made to trace the operating environment of its own system, and the trace result is stored in the internal trace memory, and at the time of system failure, under the control of the internal central processing unit. The program trace information or the bus trace information is directly collected and displayed by the maintenance tool from the program trace device or the bus monitor device through the trace information input port.

[0013]

According to the first aspect of the present invention, the failure diagnosing apparatus uses the RAS tracing apparatus having its own central processing unit to display the trace information of the operating environment in the trace memory even when the system bus of its own system fails. , Collect and display it on a maintenance tool so that the cause of failure can be easily estimated.

According to a second aspect of the present invention, there is provided a failure diagnosis device, wherein when a system bus or the like fails, each trace information from a program trace device or a bus monitor device is sent to a maintenance tool without using the system bus or internal bus. Collect and display directly so that the cause of failure can be estimated quickly and reliably.

[0015]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 to 6 and S1 are the same as the conventional ones. Reference numeral 8 is a RAS trace device having an operating environment tracing function for tracing the operating environment of its own system such as a computer and a controller, and a central processing unit independent of the central processing unit 1 (BASIC-CPU) such as a computer and a controller. The detailed configuration is shown in a block diagram in FIG.

In FIG. 2, 71 to 76 are the same as the conventional ones. Reference numeral 80 is a central processing unit (RAS-CPU) for the RAS trace device 8, 81 is a program memory for storing a program for setting the internal state of the RAS trace device 8 and software for communication with the maintenance tool 85, and 82 is a RAS. A maintenance port for connecting the trace device 8 and the maintenance tool 85.

Further, 83 is a device output port for outputting the operating environment trace information stored in the trace memory 71 to the printer 86, and 84 is the RAS trace device 8.
And a trace information input port for connecting the program trace device 3 and the bus monitor device 4, R1 is RA
It is an internal bus connecting each functional block inside the S trace device 8 and the system bus S1.

Next, the operation will be described. First, in FIG. 1, when only the central processing unit 1 fails, the man-machine interface 5 is stored in the trace memory 71 of the program trace unit 3, the bus monitor unit 4 and the RAS trace unit 8 in the same manner as in the conventional case. The trace information is collected and displayed on the CRT 6 to estimate the cause of failure of the central processing unit 1.

On the other hand, simultaneously with the central processing unit 1, for example, when the system bus S1 fails, or when only the system bus S1 fails, the man-machine interface 5 cannot collect each trace information.
In this case, the maintenance tool 85 connected to the maintenance port 82 can collect and display the operating environment trace information stored in the trace memory 71 using the central processing unit 80 in the RAS trace unit 8.

Example 2. Although the operating environment trace information stored in the trace memory 71 is collected and displayed from the maintenance tool 85 in the above embodiment, as shown in FIG. 3, the trace information input port 84 and the program trace device 3 or the bus monitor are displayed. By directly connecting to the device 4 without passing through the internal bus R1 or the system bus S1, the program trace information or the bus trace information can be promptly and reliably transmitted to the maintenance tool 85 via the central processing unit 80 even when the system bus S1 fails. Can be collected and displayed on.

Example 3. Further, in the embodiment of FIG. 1, the printer 86 is provided to output the program trace information, the bus trace information, or the operating environment trace information, but as shown in FIG. 4, for example, the floppy disk device 87 or the hard disk. By connecting to the device 88 or the optical disk device 89, each trace information may be recorded on these media.

[0022]

As described above, according to the first aspect of the present invention, the program tracing device for tracing the program executed by the central processing unit, and the access to the main memory by the central processing unit are transmitted via the system bus. And a bus monitor device that traces the operating environment of its own system, and stores the trace result in an internal trace memory. Since the maintenance tool is configured to collect and display the trace information of the operating environment stored in the trace memory under control, it is possible to collect and display each trace information to the maintenance tool, and the system bus failure If the trace information from each trace device cannot be collected in the man-machine interface due to But the effect of what is possible to estimate the failure cause can be obtained.

According to the invention of claim 2, a program trace device for tracing a program executed by the central processing unit, and a bus for tracing access to the main memory by the central processing unit via a system bus. A monitor device is provided, and the RAS trace device is made to trace the operating environment of its own system, and the trace result is stored in an internal trace memory, and at the time of the system failure, under the control of the internal central processing unit, Since the program trace information or the bus trace information is directly collected and displayed by the maintenance tool from the program trace device or the bus monitor device via the trace information input port, the system bus or the internal bus is not used. You can collect and display trace information,
Therefore, there is an effect that the cause of failure of the system bus or the like can be quickly and reliably estimated.

[Brief description of drawings]

FIG. 1 is a block diagram showing a failure diagnosis device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an embodiment of a RAS trace device according to the present invention.

FIG. 3 is a block diagram showing another embodiment of the RAS trace device according to the present invention.

FIG. 4 is a block diagram showing still another embodiment of the RAS trace device according to the present invention.

FIG. 5 is a block diagram showing a conventional failure diagnosis device.

FIG. 6 is a block diagram showing an operating environment tracing device in FIG.

[Explanation of symbols]

 1 Central Processing Unit 2 Main Memory Unit 3 Program Trace Unit 4 Bus Monitor Unit 8 RAS Trace Unit 71 Trace Memory 80 Internal Central Processing Unit 84 Trace Information Input Port 85 Maintenance Tool S1 System Bus

Claims (2)

[Claims] 1. A program trace device for tracing a program executed by a central processing unit, a bus monitor device for tracing an access to a main memory by the central processing unit via a system bus, and an operating environment of its own system. Trace information and store the trace result in the internal trace memory, and at the time of the system failure, under the control of the internal central processing unit, the maintenance tool trace information of the operating environment stored in the trace memory. And a RAS trace device for collecting and displaying 2. A program trace device for tracing a program executed by a central processing unit, a bus monitor device for tracing an access to a main memory by the central processing unit via a system bus, and an operating environment of its own system. Trace and store the trace result in the internal trace memory, and when the system fails, from the program trace device or bus monitor device via the trace information input port under the control of the internal central processing unit. RAS trace device that collects and displays program trace information or bus trace information directly on a maintenance tool.