| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem: a conventional game machine has a plurality of ROM mounted on a game performance control substrate, a board area occupied by the ROM on the board becomes large to restrict component placement, and the manufacturing cost of the game machine is not sufficiently reduced. SOLUTION: Even when a sequence program of a sub-CPU 82 and sound data to be used by a sound source IC 91 are stored in one ROM 83, an information read access to the ROM 83 is not simultaneously performed by the sub-CPU 82 and the sound source IC 91 by an address bus separating circuit 89 and a data bus separating circuit 90 being provided. Thus, since the information read access to the ROM 83 does not collide between the sub-CPU 82 and the sound source IC 91, each element is not broken but one ROM 83 can be shared between the sub-CPU 82 and the sound source IC 91, and the number of ROM used is reduced. COPYRIGHT: (C)2009,JPO&INPIT |
