| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine allowing each control means to securely receive commands from a game control means. SOLUTION: The voltage of a +30 V power supply for a power supply monitoring IC 901 to output signals is set at the same voltage of a +30 V power supply for a power supply monitoring IC 931 to output signals, and the ICs of the same kind are used as the power supply monitoring ICs 901 and 931. Accordingly, the NMI interrupt is applied to a winning ball controlling CPU 371 of a winning ball controlling board 37 at the same timing as when the NMI interrupt is applied a CPU 56 of a main board 31 while the power supply voltage is gradually reduced. Then, the CPUs stop the normal control in response to the NMI interrupt. In other words, the CPU 56 of the main board 31 and the winning ball controlling CPU 371 start at the same timing. COPYRIGHT: (C)2008,JPO&INPIT
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