public static int YM2203Init(int num, int clock, int rate, FM_TIMERHANDLER TimerHandler, FM_IRQHANDLER IRQHandler)
{
if (FM2203 != null) return (-1); /* duplicate init. */
cur_chip = null; /* hiro-shi!! */
YM2203NumChips = num;
FM2203 = new YM2203[YM2203NumChips];
for (int i = 0; i < YM2203NumChips; i++) FM2203[i] = new YM2203();
/* allocate total level table (128kb space) */
if (FMInitTable() == 0)
{
FM2203 = null;
return (-1);
}
for (int i = 0; i < YM2203NumChips; i++)
{
FM2203[i].OPN.ST.index = (byte)i;
FM2203[i].OPN.type = TYPE_YM2203;
FM2203[i].OPN.P_CH = FM2203[i].CH;
FM2203[i].OPN.ST.clock = clock;
FM2203[i].OPN.ST.rate = rate;
/* FM2203[i].OPN.ST.irq = 0; */
/* FM2203[i].OPN.ST.satus = 0; */
FM2203[i].OPN.ST.timermodel = FM_TIMER_INTERVAL;
/* Extend handler */
FM2203[i].OPN.ST.Timer_Handler = TimerHandler;
FM2203[i].OPN.ST.IRQ_Handler = IRQHandler;
YM2203ResetChip(i);
}
return (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);
}
