| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine by which an erroneous operation is prevented by securing the program operation of a control board even when a blackout occurs when a power source is turned on. SOLUTION: A main control board is equipped with CR filters 31, 32, a monostaple multi vibrator 33, a reset signal forming circuit 34, a power source monitoring circuit 35, a forced reset circuit 36, a reset combining circuit 37 and a CPU 11. The occurrence of the blackout immediately after turning of the power source is detected by the power source monitoring circuit 35 and the forced reset circuit 36 and thereby the CPU is reset, consequently the state in which the operation of the CPU 11 can not be secured due to the blackout immediately after the power source is turned on can be effectively avoided. COPYRIGHT: (C)2007,JPO&INPIT
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