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change Bifurcator system ID

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tildearrow 2024-04-21 03:34:20 -05:00
parent a6357525d9
commit ca5cf58d00
4 changed files with 4 additions and 2 deletions
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demos/misc/biffy_bifurcator.fur
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2
papers/format.md
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@ -243,8 +243,10 @@ size | description
| - 0xd6: NDS - 16 channels
| - 0xd7: Game Boy Advance (direct) - 2 channels
| - 0xd8: Game Boy Advance (MinMod) - 16 channels
| - 0xd9: Bifurcator - 4 channels
| - 0xde: YM2610B extended - 19 channels
| - 0xe0: QSound - 19 channels
| - 0xf0: SID2 - 3 channels
| - 0xf1: 5E01 - 5 channels
| - 0xfc: Pong - 1 channel
| - 0xfd: Dummy System - 8 channels

2
src/engine/platform/bifurcator.cpp
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@ -54,7 +54,7 @@ void DivPlatformBifurcator::acquire(short** buf, size_t len) {
for (int i=0; i<4; i++) {
chan[i].audSub+=chan[i].freq;
if (chan[i].audSub>=65536) {
long long newx=(long long)chan[i].curx*(chan[i].param+65536)/32768;
int64_t newx=(int64_t)chan[i].curx*(chan[i].param+65536)/32768;
newx*=65536-chan[i].curx;
chan[i].curx=(int)(newx/65536);
chan[i].audSub&=65535;

2
src/engine/sysDef.cpp
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@ -2092,7 +2092,7 @@ void DivEngine::registerSystems() {
);
sysDefs[DIV_SYSTEM_BIFURCATOR]=new DivSysDef(
"Bifurcator", NULL, 0xf2, 0, 4, false, true, 0, false, 0, 0, 0,
"Bifurcator", NULL, 0xd9, 0, 4, false, true, 0, false, 0, 0, 0,
"a fantasy sound chip using logistic map iterations to generate sound.",
{"Channel 1", "Channel 2", "Channel 3", "Channel 4"},
{"CH1", "CH2", "CH3", "CH4"},