MEMORY DIAGNOSTIC METHOD, MEMORY DIAGNOSTIC DEVICE, AND MEMORY DIAGNOSTIC PROGRAM

摘要

A memory diagnostic method of relatively easily diagnosing a memory used by a process during execution of the process is provided. A fixed domain (8) stores data that are not changed by a process execution part (5). A variable domain (9) stores data that are possibly subject to writing by the process execution part (5). A fixed domain diagnostic part (2) adds an error-detecting code to data to be stored in the fixed domain (8) in advance. Then, the fixed domain diagnostic part (2) compares the error-detecting code calculated from the data read from the fixed domain (8) with the error-detecting code added in advance to determine whether there is any data error. A variable domain diagnostic part (3) temporarily stores data stored in the variable domain (9) in a memory region different from the memory storing the data, and writes known data in the variable domain (9) where the temporarily stored data were stored. Then, the variable domain diagnostic part (3) reads data from the region where the known data were written and determines whether the data is the same as the written known data.