| 摘要 |
PURPOSE:To avoid the undesired logging by comparing the address information set previously to a register and the address of a control storage part and starting the logging when the coincidence is obtained more than once. CONSTITUTION:A microinstruction 50 which is read out of a control storage part 21 is supplied to a CPU3 based on the contents 53 of a control storage address register 4. Thus the CPU3 is controlled. The address register information is set previously to an address register 5, and the contents of this address register information are compared 7 with the contents of the register 4. If no coincidence is obtained, the CPU3 sets successively the following microinstruction addresses 52. The contents of a counter 6 are subtracted one by one for each coincidence of contents between registers 4 and 5. Then a coincidence signal 59 is delivered when the contents of the counter 6 is set at 0. Thus the CPU3 stops its operation, and a maintenance diagnosing device 10 collects the log information needed for debug out of the CPU3. When the logging is over, the restart of operation is indicated 60 for the CPU3. This can avoid the undesired logging. |
