JPS5953950A - Fault relieving method of inter-processor communication equipment - Google Patents

Abstract

PURPOSE:To eliminate a state that a stand-by system does not rise, and to improve performance, by constituting so that a processor communication equipment which takes the leadership initializes an inter-processor communication equipment of other system, when a fault is generated in the inter-processor communication equipment of other system. CONSTITUTION:When a fault is generated in a sub-system processor 6, a fault display FF/14 of a sub-system transmits fault information to a software by a data bus 18 of a CPU 1 of an active system, through a system control device 5 and a gate 12. As a result, the software detects its fault information, and issues an initializing prescribed instruction to an inter-processor communication equipment of its own system. When the self system is the ACT system, its signal is transmitted to the sub-system, and the inter-processor communication equipment of the sub-system is initialized.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has a dual central processing unit, and when a failure is detected in the inter-processor communication device of the other system, the processor The present invention relates to a method for relieving failures in intercommunication equipment.

Conventionally, when a failure occurs in an inter-processor communication device, the failure is detected via other systems and controllers, and each central control device initializes the inter-processor communication device to resolve the problem. They were assisting with communication equipment failures.

The drawback of this method is that synchronized operation is not possible because each unit performs the initial settings of the interprocessor communication device independently.

The purpose of the present invention is to overcome the shortcomings of the prior art, that is, instead of performing the initial settings of the inter-processor communication devices asynchronously in both systems, the inter-processor communication device having the initiative synchronizes the inter-processor communication devices of other systems. This is what we are trying to do.

The present invention aims to achieve the above-mentioned purpose by providing a means for detecting that an initial setting signal is sent when a failure occurs in a communication device between processors of another system, a means for communicating the signal to software, and a means for communicating between processors of another system. This is attempted to be achieved by providing a means for initializing the communication equipment.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

1 is a central control device of the ACT system. This is a 2-digit ACT system control device. 6 is an ACT-based interprocessor communication device. 4, 5.6 correspond to each of the above-mentioned devices of the SBY system.

7 is an address line of the central processing unit 1, and 8 is a data line.

Reference numeral 9 denotes a signal line for transmitting the status of the fault display F/F 14 of the inter-processor communication device of the own system to the system control device of the other system.

Reference numeral 12 denotes a gate through which the central control unit 1 reads failures in the communication device between processors of other threads.

15 is an address and decoder of a software interprocessor communication device. This is used to initialize the inter-processor communication device in the case of a 16-gate ACT system. 17 is SB
In the Y system, this is a gate that receives an initial setting command for the interprocessor communication device from another system.

When a failure occurs in the SBY thread processor communication device 6, the SBY system failure display F/F 14 transmits data to the ACT system central control unit 1 and bus 18 via the system control unit 5 and the gate 12. Okay, that failure information is passed on to the software.

By detecting the fault information, the software issues an initialization command to its own interprocessor communication device. If the own system is an ACT system, the signal is transmitted to the SBY system, and the SB
'Y system interprocessor communication device can also be initialized.

According to the present invention, by synchronizing and initializing the initial settings of the inter-processor communication device in both systems, the disadvantage that the stand and pie systems cannot be started due to a failure in the inter-processor communication device is eliminated, and performance is improved. be effective.

[Brief explanation of the drawing]

The figure is a circuit diagram of a communication device for explaining one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Central control unit, 2... System system #11 device, 6... Inter-processor communication device, 7... Address line, 8... Data line, 12...
...Gate, 15...Address, Tekota, 17...
·Gate.

Claims (1)

[Claims] 1. When the central processing unit is duplicated and connected to an inter-processor communication device in each base, means for detecting that a failure has occurred in the inter-processor communication device of another system;
A fault recovery method for an inter-processor communication device, comprising means for communicating the signal to software, and means for initializing an inter-processor communication device of another system according to a command from the software.