| 摘要 |
PURPOSE:To secure data processing by converting a machine check interruption code into another data, and placing software in a disabled waiting state. CONSTITUTION:For example, a fault occurs during data processing and a decoder 5 decodes a machine check interruption signal. When it is judged that the result of decoding indicates a state wherein the subsequent operation of hardware can not be secured, a variation indication output 1 is sent out. A machine check interruption code MCIC varying circuit 3 sends out an all-0 signal outputted from an MCIC variation data part 7 instead of the machine check interruption signal. This is sent out to a register 9 through a write part 8 and decoded by the machine check processing routine of a control part 10. This signal, however, can not be decoded because of the all-0 state and the interruption processing of a machine check can not be carried on to enter the disabled waiting state, stopping the check of the data processor. |
