| 摘要 |
PURPOSE:To attain automatically the initial program loading IPL again for a multi-system and to secure a workable state of the system, by detecting the generation of a trouble of the system and saving this state in an external memory. CONSTITUTION:When a subsystem has a trouble, an answer (1)' is not detected by a detector 11-2 to a command (1) issued from a main system 1 owing to a time-out state. In such a case, a CPU 11 of the system 1 shifts its control to a re-IPL program 12-1 within a ROM 12 as long as the down-information (3) is received. The program 12-1 saves the present contents of the memories of both systems to an external memory 14. The control is shifted to the IPL program in the same ROM 12 for execution of the system IPL. Thus both systems are ready to start their actions. |
