| 摘要 |
PURPOSE:To secure a logging of an error information within a channel memory to a main memory in a simple procedure, by indicating the head address within the channel memory and the length of the storing region following to the said head address to the channel from a CPU. CONSTITUTION:In case a channel device CMC (channel part) 3 or a CPU1 detects a fault, the CPU1 indicates the channel 3 according to the fault data to give a logging to the information to be stored in a channel memory 13 within the channel 3 to a main memoey 2 of the CPU1 side. The head address B of the region to be logged and within the channel 3 and the length showing the size of the storing region to be logged and following to the address B are indicated to the channel 3 from the CPU1. Then the data stored in the storing region is logged to the storing region having the head address A of the memory 2 from the channel 3. In case a fault occurs, a microprocessor 11 stops the subchannels excepting the one designated by a write control register 13 to carry out a logging. |
