| 摘要 |
<p>PURPOSE:To correct quickly and easily a control program of a power source control device by migrating a program from a DASD to a EEROM, when a CPU is being operated, and migrating the program from the EEROM to a RAM, when a power source is cut off. CONSTITUTION:By a correcting data of a fault and a version number-up, a control program in a DASD 1 is corrected. At the time of IMPL, a loader 3 compares the number of versions of a control program A7 in an EEROM 5 of a power source control device 4, and the number of versions of the program 2 in the DASD 1, and when coincidence is not obtained the program 2 is written in the ROM 5 and becomes the control program A7. The device 4 cuts off a power source of a CPU, and thereafter, compares a control program B8 in a RAM 6 and the number of versions of the program A7, and in case coincidence is not obtained the program B8 is rewritten to the program A7. In this case, the program A7 in the ROM 5 is migrated to the program B8 in the RAM 6, when the power source of the CPU is cut off, therefore, an influence to a system becomes minimum.</p> |
