| 摘要 |
PROBLEM TO BE SOLVED: To enable make respective control means to surely receive a command from a game control means at all times. SOLUTION: An IC 901 for power source monitoring defines that power interruption is generated when a +30V voltage becomes equal to or lower than a prescribed value and supplies interruption signals to a CPU 56. On other substrates such as a prize ball control substrate 371, the IC 931 for the power source monitoring supplies the interruption signals to the CPU when the +30V voltage becomes equal to or lower than the prescribed value. The voltage of a +30V power source for which the IC 901 for the power source monitoring outputs the signals is set higher than the voltage of the +30V power source for which the IC 931 for the power source monitoring outputs the signals. Thus, when a power supply voltage lowers, NMI interruption is applied to the CPU 56 of a main substrate earlier than the CPU of the other respective substrates and the CPU 56 starts an NMI interruption processing earlier.
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