| 摘要 |
PURPOSE:To execute a program again from the begining, by storing an interruption instruction in an idle address of an ROM and writing an unconditional jump instruction in an address, to which the jumping is made when the interruption instruction is processed. CONSTITUTION:The program D' of an interruption instruction is stored in an idle address of an ROM. When a CPU reads and executes the program D' due to an accidental abnormality, the CPU executes a program E stored in an address which is previously fixed as a jumping destination in accordance with the program D'. An unconditional jump instruction is stored in the address where the program E is stored, so that the execution of the CPU is shifted to Address ''0000'' and the program is executed again from the begining when the CPU executes the program E. As a result, the program is again executed from the beginning without stopping the control of the CPU and the control of the CPU can be performed. |
