| 摘要 |
PROBLEM TO BE SOLVED: To prevent dishonest alteration by providing the machine with a security chip having ROM, RAM, security check circuit, and CPU equipped in a delivery substrate and also with a common safety code between the CPU and the ROM. SOLUTION: A delivery substrate for a pachinko game machine equipped with ROM 10, security chips 20, etc. Program data and security codes (safety codes) are contained in the ROM 10, and clock-generation circuit 22, RAM 24, security check circuit 26, I/O port 28, I/F part 30, CPU 32, etc., are given in the security chip 20. Security check discriminating whether program data contained in the ROM 10 are normal or not is carried out in the security check circuit 26. When it is not normal, CPU 32 action is brought to a stop. Moreover, the machine is provided with the CPU 26a, ROM 26b, and RAM 26c. That is, the ROM 10 and the CPU 32 have a common safety code function.
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