| 摘要 |
PROBLEM TO BE SOLVED: To surely detect alteration of a program incorporated in a control board of a game machine.SOLUTION: A method for preventing a fraudulent action in a game machine including a main control board and a sub control board, includes: a step of determining a reference address on a ROM of the sub control board on the basis of an intrinsic identification number of a CPU of the main control board; a step of generating duplicate data on the ROM on the basis of the reference address and a predetermined interval and storing it in temporary storage means of the sub control board; and a step of determining the reference address on the ROM of the sub control board on the basis of the intrinsic identification number upon activation of the game machine and collating data generated from the ROM upon the activation on the basis of the reference address determined upon the activation and the predetermined interval with the duplicate data, thereby determining the fraudulent action of the game machine. |
