| 摘要 |
PURPOSE:To secure the high reliability of output data to a peripheral device without duplexing an internal circuit and an internal bus by executing plural abnormality generation specifying means in stages and specifying a CPU generating abnormality. CONSTITUTION:When 'inconsistent error' information is continuously outputted from respective bus control modules 23, 33 to arithmetic control modules (ACPs) 22, 32 even when retrying processing is executed, a task being executed at present is abnormally ended as the 2nd specifying means and then retrying processing at a task level is executed. If the 'inconsistent error' is continued even when the retrying processing at the task level is executed, the operation check of hardware is executed by a test program controlled by an operation systems as the 3rd error specifying means, a fault generating position on the hardware is diagnosed and the CPU generating the abnormality can be specified. |
