| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine to keep the data exactly when an unexpected power cut occurs and it is required to keep the data. SOLUTION: A low voltage signal from a power source monitor circuit mounted on a source substrait is inputted to NMI terminal of a CPU 56 through a circuit for eliminating noises. The circuit for eliminating noises is provided with ferrite beads 906, two Schmitt trigger type turn around circuits 907 and 909, and a capacitor 908 set between the turn around circuits 907 and 909. CPU 56 executes the process of the time of a power cut according to an inputted signal to NMI terminal.
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