| 摘要 |
PURPOSE:To shorten the time required for diagnosis of the abnormality of a multiprocessor by performing the comparison of the processing results among unit processors to the same processing data inputted via an input bus so as to decide an abnormal unit processor. CONSTITUTION:A deciding circuit 4 compares the data given from unit processors 1 - 3 with each other to decide an abnormal processor. When the coincidence is secured among these data, the normal states of all processors 1 - 3 are confirmed. When the coincidence is secured between data on two unit processors and no coincidence is secured with the data of the 3rd processor, the unit processor having the discordant data is decided abnormal. For instance, the processor 3 is decided abnormal when the coincidence is secured between both processors 1 and 2 and no coincidence is secured with the 3rd processor. Furthermore all processors 1 - 3 are decided abnormal when no coincidence is obtained between them. Then, the time required for diagnosis is shortened without the diagnostic processor. |
