| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device for a game machine which is capable of maintaining the value of a counter to a value within an original update range even if repeatedly updating the value of the counter during a residual time of interrupt processing. SOLUTION: When Low is output from an OR circuit 39 every 2 ms (K), Hi is input to a PR terminal of a D flip-flop 42 (L). Since Vcc is input to a CLR terminal, when an operation code fetch signal is output from a CPU 11 and the output of an LIR terminal falls to Low from Hi, input to a CK terminal of the D flip-flop 42 rises to Hi from Low (M), then Low output input to a D terminal (K) is output to a URES terminal from a Q terminal (N), and user reset interrupt is generated at timing of operation code fetch. Consequently, since reset interrupt processing is not carried out during the execution of a write command, the value of an initial value counter can be maintained to the value within the original update range even if repeatedly updating the value of the initial value counter during the residual time of reset interrupt processing. COPYRIGHT: (C)2011,JPO&INPIT |
