| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve security of a random number circuit that a game machine loads.SOLUTION: A game machine includes random number circuit monitoring means (for example, an update monitoring circuit 537) capable of monitoring occurrence of a fault in the frequency of a random number clock signal (for example, an external clock signal) for updating numerical data held by numerical value holding means (for example, a hard latch random number value register and a soft latch random number value register) of a 16-bit random number circuit 508b, and an update state of the numerical data held by the numerical value holding means. Generation of a first reset (for example, a system reset), or generation of a second reset (for example, user reset) can be set based on occurrence of a predetermined event (for example, input of an IAT signal from an IAT 506a, and input of a timeout signal from a watchdog timer (WDT) 506b).</p> |
