Esempio n. 1
0
        public static int OPMInit(int num, int clock, int rate,FM_TIMERHANDLER TimerHandler, FM_IRQHANDLER IRQHandler)
        {
            if (FMOPM!=null) return (-1);	/* duplicate init. */
            cur_chip = null;	/* hiro-shi!! */

            YM2151NumChips = num;

            /* allocate ym2151 state space */
            FMOPM = new YM2151[YM2151NumChips];

            for (int i = 0; i < YM2151NumChips; i++)
                FMOPM[i] = new YM2151();

            /* allocate total lebel table (128kb space) */
            if (FMInitTable()==0)
            {
                FMOPM = null;
                return (-1);
            }
            for (int i = 0; i < YM2151NumChips; i++)
            {
                FMOPM[i].ST.index = (byte)i;
                FMOPM[i].ST.clock = clock;
                FMOPM[i].ST.rate = rate;
                /* FMOPM[i].ST.irq  = 0; */
                /* FMOPM[i].ST.status = 0; */
                FMOPM[i].ST.timermodel = FM_TIMER_INTERVAL;
                FMOPM[i].ST.freqbase = rate !=0? ((double)clock / rate) / 64 : 0;
                FMOPM[i].ST.TimerBase = 1.0 / ((double)clock / 64.0);
                /* Extend handler */
                FMOPM[i].ST.Timer_Handler = TimerHandler;
                FMOPM[i].ST.IRQ_Handler = IRQHandler;
                /* Reset callback handler of CT0/1 */
                FMOPM[i].PortWrite = null;
                OPMResetChip(i);
            }
            return (0);
        }
Esempio n. 2
0
        static void OPM_CALC_FCOUNT(YM2151 OPM, FM_CH CH)
        {
            if (CH.SLOT[SLOT1].Incr == unchecked((uint)-1))
            {
                int fc = (int)CH.fc;
                int kc = CH.kcode;

                CALC_FCSLOT(CH.SLOT[SLOT1], (int)(OPM.KC_TABLE[fc + CH.SLOT[SLOT1].DT2]), kc);
                CALC_FCSLOT(CH.SLOT[SLOT2], (int)(OPM.KC_TABLE[fc + CH.SLOT[SLOT2].DT2]), kc);
                CALC_FCSLOT(CH.SLOT[SLOT3], (int)(OPM.KC_TABLE[fc + CH.SLOT[SLOT3].DT2]), kc);
                CALC_FCSLOT(CH.SLOT[SLOT4], (int)(OPM.KC_TABLE[fc + CH.SLOT[SLOT4].DT2]), kc);
            }
        }