| 摘要 |
PROBLEM TO BE SOLVED: To cope with clever fraudulent actions in recent years and to effectively prevent the fraudulent actions to a board. SOLUTION: A bidirectional communication circuit for bidirectionally communicating data is provided for the connection of a pattern control board 33 and illumination/sound control boards (34, 35), and a game control board 30 and the pattern control board 33 are connected through a relay board 37 where a CPU is not loaded. A unidirectional communication circuit which does not transmit the data from the relay board 37 to the game control board 30 is provided for the connection of the relay board 37 and the game control board 30, and a unidirectional communication circuit which does not transmit the data from the pattern control board 33 to the relay board 37 is provided for the connection of the pattern control board 33 and the relay board 37. The game control board 30 and a special pattern display part 52 are directly connected. COPYRIGHT: (C)2006,JPO&NCIPI
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