| 摘要 |
PURPOSE:To use a save area efficiently and to simplify a fault search system, by registering fault information on an item to be collected in a control information storage part previously. CONSTITUTION:If an abnormal state is detected while an execution part 4 exexcutes instructions of a microprogram, fault information is written in the register of a holding part 5. At this time, a microword instruction set in a comparison part 6 is executed, but the execution part 4 sets necessary address information in an indication part 1 before said setting. The microword set in the comparison part 6 is transferred through a storage part 3 to the execution part 4, where it is executed. During the execution of this instruction, whether the fault information set in the holding part 5 is registered in a control information storage part 7 previously or not is checked and only when so, the contents of the holding part 5 and an execution information storage part 8 are stored in a saving part 9. |
