| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high-reliability storage circuit module which can correct and detect an error by ECC by using existing SIMM and is suppressed in lost low by equipping the module with a correction and detection part which perform error correction and detection and composing an ECC storage part of a storage element having no error correcting function. SOLUTION: An ECC circuit 300 stores data A in a data memory 50 once the data A are written, and generates and stores an ECC code in an ECC code memory 60. When some data B is read out of the data memory 50, a CPU 100 reads the data B out of the data memory 50 and also reads the ECC code corresponding to the data B out of an ECC code memory 60. The ECC circuit 300 generates an ECC code for the read data B and compares it with the read ECC code. Here, both the data memory 50 and ECC code memory 60 use SIMM which are currently put on the market. |
