| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine which allows fraudulent exchange of a storage medium element to be recognized logically by software.SOLUTION: When performing checksum to a detachable sub board socket attachment ROM 32, a range to perform the checksum is set in range setting data acquisition means 321, and data operation means 331 performs the checksum for the set range. The checksum is performed every time power of a slot machine 1 is supplied, and in abnormal display control means 561, the checksum of the previous time and the checksum of this time are compared. Since checksum values are different between the previous time and this time when the sub board socket attachment ROM 32 is exchanged to a different one, in this case, abnormality is displayed at a liquid crystal display device 4E, and thus, without using hardware such as a sensor, the fraudulent exchange of the sub board socket attachment ROM 32 can be surely recognized logically by software. |
