| 摘要 |
PURPOSE:To reduce considerably the load on a central processor by saving state monitor data on each part of hardware in a system in an external storage device, and loading it again to a main storage device for restart processing when the system recovers from a fault. CONSTITUTION:When system initialization is completed, the central processor CPU sends a start command for data saving operation to a processor MPU. The MPU receives the command and writes data from the main storage device MM in specified addresses of the external storage device MMe at specified cycles according to coordination information on the MM and MMe. When restart processing is performed on fault recovery, data is transferred from the MMe to the MM according to the correspondence information on the MM and MMe and the MPU waits for a command from the CPU. The CPU starts normal service on the completion of the monitor data recovery operation of the MPU, which also returns to periodic operation.
|
