| 摘要 |
<P>PROBLEM TO BE SOLVED: To increase security strength by a simple means, and to reduce a processing load of a main control part. <P>SOLUTION: A game machine includes a main control part and a peripheral control part. In the game machine, the main control part includes an inspection value generation part that converts a bit train of error inspection values by a plurality of conversion systems (rotation operation), and a transmission part for transmitting commands to the peripheral control part. The inspection value generation part is provided between a main CPU and the transmission part, and converts a bit train of error inspection values of commands generated in the past, to be added to a command to be transmitted. The conversion system of the bit train is changed on the basis of a control command to be transmitted. The conversion system includes regular variation and irregular variation of the amount of shift. An I/O control system in the inspection value generation part is different from that outside the inspection value generation part. The peripheral control unit generates an error inspection value for verification, inspects validity of the received command, and performs processing according to an inspection result. <P>COPYRIGHT: (C)2013,JPO&INPIT |
