| 摘要 |
PURPOSE:To extract scan path data of a hardware register from a host device without need of a maintenance diagnosis exclusive bus on the occurrence of a hardware fault in a peripheral controller during system operation. CONSTITUTION:On the occurrence of a hardware fault, a diagnosis control section 30 detecting the fault, scan path data of the hardware register are collected and stored in a memory section 10 and when the storage of all data is finished, a flag indicating the storage of the scan path data in the memory section 10 is set and interrupt is produced to a firmware. The firmware receiving an interrupt collects fault information to command resetting. A processor section 40 receiving the reset command initialize the controller and it is reported to a host device when the initializing is finished. |
