| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine wherein each control means can surely receive commands from a game control means. SOLUTION: The voltage of a +30 V power source to which a power source monitoring IC901 outputs a signal is preset to be the same as the voltage of a +30 V power source to which a power source monitoring IC931 outputs a signal and the same kind of IC is used as the power source monitoring IC901 and IC931. Therefore, when the voltage of the power source is decreasing, NMI cuts in prize ball controlling CPU371 of a prize ball controling substrate 37 at the same time as NMI cuts in CPU56 of a main substrate 31. In response to the interruption by NMI, each CPU stops its usual control, that is, CPU56 of the main substrate 31 and the prize ball controlling CPU371 shut down at the same time.
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