| 摘要 |
PURPOSE:To detect failed parts, to determine the system to be stopped and to improve the reliability, by accessing a memory from an opposing system central processor, when a data transfer failure to an external memory of the opposing system is detected. CONSTITUTION:If a failure is detected at the data transfer to an external memory of the opposing system, accessing is made to the memory from a central processing device of the opposing system. For example, at the data transfer from a central processing unit CPU1a to an external memory 2c, the CPU1a system transmits the test instruction of the external memory 2c to the opposing system CPU2a via a computer system link device CSL1j. Next, the CPU2a transfers the test data to the external memory 2c via the CSL1j and the result of this transfer is returned to the CPU1a via the CSL1j. According to the response message of the CPU1a, a system to be stopped is determined through the discrimination of failed parts parts and a stop instruction is transmitted. |
