| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine capable of properly determining whether or not, a data line for transmitting decoration control data is in an occupied state.SOLUTION: A game machine comprises: game control means for generally controlling a game; and performance control means for controlling a performance device for performing a game. The game machine further comprises: group unit control means for controlling a grouped performance device; group general control means for controlling each group unit control means; a timing signal line for transmitting a timing signal; and a data line on which data is transmitted and received bi-directionally. The group unit control means transmits a predetermined number of bytes of down direction data to the group unit control means with a predetermined interval being a second time value, while transmitting a pulse of a pulse width being a first time value, and when a state for maintaining the data line at a predetermined level continues for a predetermined monitoring time, determines that the data line is in an occupied state, and the monitoring time is longer than the first time value and shorter than the second time value.SELECTED DRAWING: Figure 67 |
