| 摘要 |
PURPOSE:To smoothly perform a restoring operation by stopping each of a DMA controller, an error correcting circuit, and a formatter with its own operation error signal and an operation error informing signal from the others. CONSTITUTION:The DMA controller 4, the error correcting circuit 6, and the formatter 7 constituting a controller 1 are internally provided with operation abnormality processing circuits 4a, 6a, and 7a respectively. If one of operation abnormality processing circuits 4a, 6a, and 7a detects the operation error in its own circuit, it stops its own operation at a prescribed timing and informs the other circuits of the occurrence of operation error. In being informed of the occurrence of operation error, the other operation abnormality processing circuits stop their operation at a prescribed timing. Contents of the error are read into a microcomputer 3 to perform the recovery operation. |
