| 摘要 |
PROBLEM TO BE SOLVED: To provide a computer system capable of implementing control program implementation means independent of the presence/absence of chargeable backup means.SOLUTION: The computer system includes a memory including a nonvolatile memory and a volatile memory, and an arithmetic unit and a control program described in a control program table of the memory is executed by the arithmetic unit. A first control program table is provided in the nonvolatile memory, and a second control program table is provided in the volatile memory. When powering on the computer system, the presence/absence of chargeable backup means and which one of the first and second control program tables is to be preferentially used are confirmed. If the chargeable backup means is not connected and the second control program table is to be preferentially used, contents of the first control program table are transferred to the second control program table. During arithmetic operation based on the second control program table, contents of the second control program table are transferred to the first control program table in each determined control cycle. |
