void fmunit_write(int offset, int data)
{
if(!snd.enabled || !sms.use_fm)
return;
FM_Write(offset, data);
}
void FM_WriteReg(int reg, int data)
{
FM_Write(0, reg);
FM_Write(1, data);
}
void FM_SetContext(uint8 *data)
{
int i;
uint8 *reg = fm_context.reg;
memcpy(&fm_context, data, sizeof(FM_Context));
/* If we are loading a save state, we want to update the YM2413 context
but not actually write to the current YM2413 emulator. */
if(!snd.enabled || !sms.use_fm)
return;
FM_Write(0, 0x0E);
FM_Write(1, reg[0x0E]);
for(i = 0x00; i <= 0x07; i++)
{
FM_Write(0, i);
FM_Write(1, reg[i]);
}
for(i = 0x10; i <= 0x18; i++)
{
FM_Write(0, i);
FM_Write(1, reg[i]);
}
for(i = 0x20; i <= 0x28; i++)
{
FM_Write(0, i);
FM_Write(1, reg[i]);
}
for(i = 0x30; i <= 0x38; i++)
{
FM_Write(0, i);
FM_Write(1, reg[i]);
}
FM_Write(0, fm_context.latch);
}
