| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a game machine capable of monitoring abnormal ball entries to a ball entry port including a fixed-type start port and an ordinary winning port without increasing control loads on a main control unit.SOLUTION: In a game machine which dispenses a predetermined number of prize balls with a ball entry into a start port as a trigger, each time a game ball enters the start port, game control means transmits a ball entry command to performance control means. Each time receiving a ball entry command, the performance control means stores the counter value and executes a comparison process to make comparison between the counter value stored in association with the game ball entering the start port most recently and the counter value stored in association with the game ball entering the start port before a predetermined number of game balls, including the game ball entering most recently. If the comparison result shows that the time required for entrance into the start port by the game balls equal to or greater than the predetermined number of game balls is equal to or less than predetermined time, an abnormality signal is output, indicating that an abnormality has occurred in a ball entry state of the start port.</p> |
