| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable a player to adjust volume to be output from sound output means and also to prevent the exposure of a fraudulent action from being blocked by volume adjustment.SOLUTION: Various kinds of sounds are output from speakers after the initialization of storage contents by a main control CPU is terminated. During the initialization by the main control CPU (during a period when the speakers are announcing that RAM clear has been performed), the operation of an operation switch is not accepted as validity. Then, volume is allowed to be adjustable by reflecting the operation of the operation switch within the range of ±2 with a default value set by an analog volume switch as reference. Consequently, volume to be output from the speakers can be adjusted by a player in a normal case, and a player cannot adjust volume during a period when the speakers are announcing that the RAM clear has been performed. Thus, the exposure of a fraudulent action is prevented from being blocked by volume adjustment.</p> |
