| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a safe ball tank, to compact the constitution, to prevent an unpredicted disadvantage from being given to a player and to prevent illegal play. SOLUTION: A frame control substrate 31 is constituted of mainly a 1-chip microcomputer 90 with a built-in ROM and RAM and an input/output I/O 91 and a battery 92 for supplying power for emergency to the RAM of the 1-chip microcomputer 90 or the like in addition. To the input/output I/O 91, other than a game control substrate 30, the various kinds of lamp LEDs 60, a sound volume switch 61, the various kinds of solenoids 62, a sound generator 63, a prize ball pay-out device 64 and a hitting device control substrate 65 are connected. Respective winning ports are provided with winning ball detection switches and the number of winning balls is summed up corresponding to the difference of the numbers of prize balls. Communication from the game control substrate 30 to the frame control substrate 31 and a special pattern control substrate is performed only unidirectionally and the communication can not be performed from the frame control substrate 31 or the special pattern control substrate to the game control substrate 30. |
