| 摘要 |
PROBLEM TO BE SOLVED: To provide a game board which can prevent illegal action allowing criminal game operation based on the possibility of the illegal passage and detection using a radio wave. SOLUTION: A second circuit part (a Zener diode 10 or an inverter 102b) receives a detection output of a starting port switch 17 from a first circuit part (a circuit for inputting a signal to a data input terminal 311 corresponding to the detection output of the starting port switch 17) and when the detection output gives an abnormal potential, it performs a signal processing to allow specifying of the occurrence of the abnormal potential. Moreover, when the detection output of the starting port switch 17 gives an abnormal potential, a third circuit part (an OR gate 110 or an inversion input buffer 109) receiving an output of the second circuit part performs a signal processing to input an interrupt signal indicating that the detection output of the starting port switch 17 corresponds to a criminal detection output. Then, a microcomputer 31 for game control performs an NMI interrupt processing to disable the game control based on an input of the interrupt signal from the third circuit part.
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