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(minor cleanup)

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This commit is contained in:
Michaël Banaan Ananas 2011-08-09 09:36:24 +00:00
parent 57ad553f9b
commit 4b3d9c520a
1 changed files with 13 additions and 15 deletions
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28
src/emu/sound/ymf278b.c
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@ -580,13 +580,6 @@ static void ymf278b_C_w(YMF278BChip *chip, UINT8 reg, UINT8 data, int init)
slot->wave |= data;
// load wavetable header
// status register LD bit is on for approx 300us
chip->status_ld = 1;
period = attotime::from_usec(300);
if (chip->clock != YMF278B_STD_CLOCK)
period = (period * chip->clock) / YMF278B_STD_CLOCK;
chip->timer_ld->adjust(period);
if(slot->wave < 384 || !chip->wavetblhdr)
offset = slot->wave * 12;
else
@ -620,6 +613,13 @@ static void ymf278b_C_w(YMF278BChip *chip, UINT8 reg, UINT8 data, int init)
for (i = 7; i < 12; i++)
ymf278b_C_w(chip, 8 + snum + (i-2) * 24, p[i], 1);
// status register LD bit is on for approx 300us
chip->status_ld = 1;
period = attotime::from_usec(300);
if (chip->clock != YMF278B_STD_CLOCK)
period = (period * chip->clock) / YMF278B_STD_CLOCK;
chip->timer_ld->adjust(period);
break;
}
@ -635,8 +635,8 @@ static void ymf278b_C_w(YMF278BChip *chip, UINT8 reg, UINT8 data, int init)
case 2:
slot->FN &= 0x07f;
slot->FN |= ((data&0x07)<<7);
slot->PRVB = ((data&0x8)>>3);
slot->OCT = ((data&0xf0)>>4);
slot->PRVB = (data&0x8)>>3;
slot->OCT = (data&0xf0)>>4;
if (slot->active && data != chip->pcmregs[reg])
{
ymf278b_compute_step(slot);
@ -645,7 +645,7 @@ static void ymf278b_C_w(YMF278BChip *chip, UINT8 reg, UINT8 data, int init)
break;
case 3:
slot->TL = (data>>1);
slot->TL = data>>1;
slot->LD = data&0x1;
break;
@ -654,20 +654,17 @@ static void ymf278b_C_w(YMF278BChip *chip, UINT8 reg, UINT8 data, int init)
slot->DAMP = (data&0x40)>>6;
if (data & 0x80)
{
// note on
slot->active = 1;
slot->env_step = 0;
slot->env_vol = 256U<<23;
slot->env_vol_step = 0;
slot->env_vol_lim = 256U<<23;
slot->env_prvb = 0;
slot->stepptr = 0;
ymf278b_compute_step(slot);
ymf278b_compute_envelope(slot);
LOG(("YMF278B: slot %2d wave %3d lfo=%d vib=%d ar=%d d1r=%d dl=%d d2r=%d rc=%d rr=%d am=%d\n", snum, slot->wave,
slot->lfo, slot->vib, slot->AR, slot->D1R, slot->DL, slot->D2R, slot->RC, slot->RR, slot->AM));
LOG(("YMF278B: slot %2d wave %3d lfo=%d vib=%d ar=%d d1r=%d dl=%d d2r=%d rc=%d rr=%d am=%d\n", snum, slot->wave,slot->lfo, slot->vib, slot->AR, slot->D1R, slot->DL, slot->D2R, slot->RC, slot->RR, slot->AM));
LOG((" b=%d, start=%x, loop=%x, end=%x, oct=%d, fn=%d, step=%x\n", slot->bits, slot->startaddr, slot->loopaddr>>16, slot->endaddr>>16, slot->OCT, slot->FN, slot->step));
}
else
@ -681,6 +678,7 @@ static void ymf278b_C_w(YMF278BChip *chip, UINT8 reg, UINT8 data, int init)
}
break;
// envelope settings
case 5:
slot->vib = data&0x7;
slot->lfo = (data>>3)&0x7;