| 摘要 |
PROBLEM TO BE SOLVED: To surely detect fraudulent exchanges of a ROM and a substrate without interference of a person doing fraudulent act. SOLUTION: A plurality of units for executing processing concerning a game are provided with a monitoring parts respectively. The monitoring part makes an error signal circulate. That is, the monitoring part: (a) transmits a check signal or the error signal for checking the connection of wiring; (b) monitors the signals transmitted from the other monitoring parts; (c) judges error when the received signal is the error signal, memorizes the occurrence of error and transmits the error signal to the other monitoring parts; (d) judges error when the check signal is not received, memorizes the occurrence of error and transmits the error signal to the other monitoring parts; and (e) executes an error processing. The monitoring part judges error when a ROM is removed as well. COPYRIGHT: (C)2008,JPO&INPIT
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