| 摘要 |
<p>PURPOSE:To obtain a processing system for preventing data on a memory from being damaged, even if its processing is executed except the time when a power source is turned on, by setting a mode for inhibiting an error check at the time of readout of the memory, and utilizing this function at the time of write. CONSTITUTION:An FF6 is set/reset by a command from a processor 1, and an output of an ECC error checking circuit 3 is inhibited or made effective. When the processing is started, the processor 1 issues an ECC check inhibiting command, reads out data from the head address of a memory and writes it in the same address. Also, write and readout are repeated by increasing an address, and executed until the final address of the memory. In the end, an ECC check effective command is issued.</p> |
