| 摘要 |
<p>PURPOSE: To confirm whether a memory for parity and a parity generation and check circuit operate normally or not in the parity generation and check circuit. CONSTITUTION: In the parity generation and check circuit which generates a parity by an inspection circuit 302, and stores it in the memory 204 for parity at the time of writing data in the memory 203 for data from a microcomputer, and besides, executes the operation check of the memory 203 for data by executing the parity check of the read out data and the stored data at the time of reading the data out of the memory 203 for data, only one bit among the read out data is read out of the memory 204 for parity instead of the memory 203 for data by the microcomputer.</p> |
