JP2518829Y2 - I / O card abnormality detection system - Google Patents

Description

[Detailed description of the device]

[0001]

This invention relates to an input / output bus (for example, V
An I / O card abnormality detection system for detecting an operation abnormality of various I / O cards connected to this input / output bus in a computer device using a ME bus), and more specifically, to detect an operation abnormality early. It will improve.

[0002]

2. Description of the Related Art A computer system such as an FA computer has an input / output bus such as a VME bus, and various I / O cards (RS23
2C card, GPIB card, etc.) are connected and various processes are executed.

By the way, a method of detecting an abnormal operation of an I / O card installed in such a system is as follows.

That is, when an abnormality such as a time-out of the watch dog timer occurs on the I / O card side, I
The / O card side does not asynchronously notify the processor side of the abnormal state, but the processor side actually makes an input / output request to know the abnormality of the I / O card.

[0005]

An abnormality occurring on the I / O card side is not detected unless the processor in the computer system accesses it. , It could have a bad effect on the whole system.

An object of the present invention is to solve such a problem, and an object thereof is to detect an I / O card in which an abnormality has occurred and disconnect it at an early stage so that the operation of other parts can be continued. To do.

[0007]

DISCLOSURE OF THE INVENTION The present invention, which has solved the above problems, provides a computer system and a plurality of I / O cards connected to the computer system via an input / output bus and an I / O driver. And these I /
In an I / O card abnormality detection system for detecting an operation abnormality of an O card, an abnormality occurrence notification signal line to which an operation abnormality signal generated in the I / O card is transmitted is set to the input / output bus to generate the abnormality. The operation abnormality signal sent to the notification signal line is accepted as an interrupt, and each I / O
A system program is provided to inquire about the normality / abnormality of the I / O card connected to the driver, detect the abnormal I / O card, and notify the application program in the system of this abnormality. Is an I / O card abnormality detection system.

[0008]

In the I / O card abnormality detection system of the present invention, when an abnormality occurs, each I / O card sends an abnormality occurrence signal to the abnormality occurrence notification signal line to interrupt the computer system side. Computer that was interrupted
The system program in the system identifies the card in which the abnormality has occurred and notifies the upper application program.

[0009]

1 shows the concept of an I / O card abnormality detection system embodying the present invention.

The system shown in this figure is a computer
RS232C cards c1, GPIB cards c2, BSC cards c3, ... Are connected to the system 10 as I / O cards, and these I / O cards c1, c2, c3 ,.
Are interconnected by VMEbus B. Furthermore, VME
Bus B is a type of input / output bus, and its signal line has an abnormality occurrence notification signal line SYSFAI for transmitting an abnormality detection signal sent from each I / O card to the computer system 10 side.
L is assigned.

The computer system 10 includes a first I / O driver program 11 for controlling the I / O cards c1 and c2 and a second I / O driver program 12 for controlling the I / O card c3. Configurator program 13 that recognizes the type of I / O card and activates it, signal line
VMEbus controller 14 with gate array configuration that senses the abnormality detection signal on SYSFAIL, interface driver program 15 that recognizes this abnormality detection signal,
It is composed of a system monitor program 16 for recognizing an I / O card abnormality and notifying it to a host, an application program 17 written in BASIC language, and the like.

The I / I of the present invention thus constructed
The operation of the O card abnormality detection system will be described below. When the system starts up, the configurator program 13 recognizes the mounting state of the I / O card and activates the respective I / O driver programs 11 and 12. Once booting is complete, the configurator program
13 notifies the system monitor program 16 of the ready signal READY together with the status of the I / O card. This causes the system to begin normal operation.

In this normal operating state, the I / O card c
It is assumed that an abnormality occurs in any of 1, c2, c3. The I / O card in which the abnormality has occurred activates the signal line SYSFAIL assigned to the VMEbus B. The VMEbus controller 14 uses this signal line SYSFAIL
It receives an active signal and generates an interrupt signal. The interface driver program 15 that received this interrupt signal is the system monitor program 16
Notify this interrupt to. The system monitor program 16 is connected to each of the I / O driver programs 11 and 12
Queries the normal / abnormal status of the O cards c1, c2, c3 and detects the I / O card whose signal line SYSFAIL is active. When the system monitor program 16 detects an I / O card in which an abnormality has occurred, the system monitor program 16 notifies the application program 17 of the event.

In this way, the I /
The O card activates the signal line SYSFAIL of the VMEbus B to generate an interrupt to the computer system 10 side, and the computer system 10 side receives this interrupt and the system monitor program 16 causes the I / O driver program 11 , 12 I / O with abnormal operation
The O-card can be confirmed and the application program 17 can be notified.

[0015]

According to the I / O card abnormality detection system of the present invention, the I / O card abnormality is detected before the computer system side actually performs input / output access etc. The abnormality can be detected and countermeasures can be taken, and the abnormality can be detected in real time.

As a result, the application program can perform processing such as withdrawal of access to the card after the occurrence of an abnormality, and the reliability of the entire system can be improved.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of an I / O card abnormality detection system embodying the present invention.

[Explanation of symbols]

 10 Computer System 11 First I / O Driver Program 12 Second I / O Driver Program 13 Configurator Program 14 VMEbus Controller 15 Interface Driver Program 16 System Monitor Program 17 Application Program B VME bus

Claims (1)

(57) [Scope of utility model registration request] 1. A computer system, and a plurality of I / O cards connected to the computer system via an input / output bus and an I / O driver, wherein an abnormal operation of these I / O cards is detected. In the I / O card abnormality detection system for detecting, an abnormality occurrence notification signal line to which an operation abnormality signal generated in the I / O card is sent is set to the input / output bus and sent to the abnormality occurrence notification signal line. The operation abnormality signal is accepted as an interrupt and each of the I
The I / O card connected to the I / O driver is inquired about the normality / abnormality of the I / O card and the abnormal I / O card is detected.
An I / O card abnormality detection system comprising a system program for notifying the program.