| 摘要 |
<p>PURPOSE:To effectively execute partial initialization while preventing the destruction of the other information even at the time of the partial change of the information stored in a system memory. CONSTITUTION:A first identification area is ensured in a system memory, and whether or not an identification mark 1 is written in the first identification area is discriminated (S11). At the time of receiving an entire initializing instruction, an entire information area is initialized (S12) only when the mark 1 is not written, and the identification mark 1 is written in the first identification area (S13). Moreover, a second identification area is ensured in the system memory separately from the first identification area, and whether or not a mark 2 is written in the second identification area is discriminated (S14). At the time of receiving a partial initializing instruction, the partial initialization of the information area is operated (S15) only when the mark 2 is not written, and the mark 2 is written in the identification area (S16).</p> |
