| 摘要 |
PROBLEM TO BE SOLVED: To detect fraudulent ROM replacement in a game machine, in distinction from regular ROM replacement by maintenance work. SOLUTION: The game machine includes a switch SW operated when a case in which a main board is housed is removed, and a main board-monitoring board 3 including a processing section 3a for determining the presence/absence of removal of the case based on the output of the switch and a storage section 3b for storing the determination result of the processing section. A sub-board 2 reads out the contents of the storage section 3b of the main board-monitoring board 3 at least when electric power is turned on, and determines the presence/absence of a fraudulent act based on the read-out contents. COPYRIGHT: (C)2007,JPO&INPIT
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