| 摘要 |
PURPOSE:To eliminate limitation for a memory accessible storage area by comprising a system so that built-in diagnosis using a storage part in a system controller can be feasible. CONSTITUTION:A diagnosis control part 10 in the system controller 1 informs state display to a bus control part 20 in a processor 2 to be diagnosed by using an address/write data signal line 30 and a bus control signal 33 so as to make access to storage area display 21 in the processor 2 to be diagnosed by the storage part 11 in the system controller 1. The bus control part 20 in the processor 2 to be diagnosed sets the information on the write data signal line 30 on the storage area display 21 by the above information. After that, the diagnosis control part 10 informs a diagnosis start-up request signal 23 to a processor part 22 in the processor 2 to be diagnosed by the address/write data signal line 30 and the bus control signal line 33 via the bus control part 20. The processor 2 to be diagnosed executes a diagnostic program by the diagnosis start-up request signal 23. |
