| 摘要 |
PURPOSE:To perform error recovery processing immediately if an error occurs to a dual memory device during access to the memory device, by reporting the error to a maintenance processor while informing a processing processor that access is normal. CONSTITUTION:If an error occurs to one memory device 5d, an error report signal 26d is sent out and during reading operation, normal read data 27c of a memory device 5c is selected while read data 17a is sent back to the processing processor 2. Further, an error report signal 16a is not sent out to the processing processor 2 and an error report signal 16b is sent out to the main processor 3. After end signals 25c and 25d are both obtained, an end signal 15a is returned to the processing processor 2. |
