| 摘要 |
PURPOSE:To effectively use a memory chip, to secure a memory area in the own processor and to improve the processing efficiency of a system by providing a storing means capable of setting an arbitrary value due to an external input and an address supplying means. CONSTITUTION:At the time of occurrence of a failure, when a failure condition is detected by a diagnosing part 102, the failure condition is informed to a processing part 100 and a failure processing firmware is activated. Next, when the setting request of the mode at the time of failure is issued, a SET signal becomes a logic 1 from a micro instruction decoding part 105 and for the address range for a memory chip, high order 512 words can be addressed. Thereafter, by the diagnosis Read/Write control for the memory chip of a storing part 1, the log information, etc., at the time of failure can be stored from the firmware of the processing part 100. Since the memory area of the unused part can be addressed, the memory chip can be effectively used and the memory area can be secured in the own processor, the processing efficiency of the system can be improved. |
