| 摘要 |
PROBLEM TO BE SOLVED: To prevent a fraud executed by abusing a RAM clear operation of a game machine.SOLUTION: When a power supply is applied, with the RAM switch of a Pachinko machine depressed, a RAM clear signal rises an approximate time Ta thereafter, and when a hand is released from the RAM clear switch, the RAM clear signal falls an approximate time Ta thereafter. The game machine acquires a hardware random number at the timing of the fall and defines it as an initial value of a software random number. The initial value of the software random number is thus determined according to a duration of depressing the RAM clear switch and thus varies each time of the RAM clear. This configuration can prevent a fraud executed by abusing the RAM clear operation of the game machine. |
