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SNES: Fix wavesynth and channel 1

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This commit is contained in:
Natt Akuma 2022-09-19 01:01:46 +07:00
parent 7956d41f1b
commit 18d793dc20
2 changed files with 10 additions and 6 deletions
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11
src/engine/platform/snes.cpp
View file

@ -83,7 +83,6 @@ void DivPlatformSNES::acquire(short* bufL, short* bufR, size_t start, size_t len
void DivPlatformSNES::tick(bool sysTick) {
// KON/KOFF can't be written several times per one sample
// so they have to be accumulated
// TODO due to pipelining, KON/KOFF writes need to be delayed to accomodate sample address changes in the table
unsigned char kon=0;
unsigned char koff=0;
for (int i=0; i<8; i++) {
@ -203,7 +202,10 @@ void DivPlatformSNES::tick(bool sysTick) {
}
}
}
rWrite(0x4c,kon);
if (kon!=0) {
rWrite(0x4c,kon);
}
// always write KOFF as it's constantly polled
rWrite(0x5c,koff);
}
@ -213,7 +215,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA);
if (ins->amiga.useWave) {
chan[c.chan].useWave=true;
chan[c.chan].wtLen=(unsigned int)(ins->amiga.waveLen)+1;
chan[c.chan].wtLen=ins->amiga.waveLen+1;
if (chan[c.chan].insChanged) {
if (chan[c.chan].wave<0) {
chan[c.chan].wave=0;
@ -221,6 +223,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
chan[c.chan].ws.changeWave1(chan[c.chan].wave);
}
}
chan[c.chan].ws.init(ins,chan[c.chan].wtLen,15,chan[c.chan].insChanged);
} else {
chan[c.chan].sample=ins->amiga.getSample(c.value);
chan[c.chan].useWave=false;
@ -404,7 +407,7 @@ void DivPlatformSNES::reset() {
dsp.set_output(NULL,0);
memset(regPool,0,128);
// TODO more initial values
sampleTableBase=0;
sampleTableBase=0x100; // hack: this can't be 0 or channel 1 won't play??
rWrite(0x5d,sampleTableBase>>8);
rWrite(0x0c,127); // global volume left
rWrite(0x1c,127); // global volume right

5
src/engine/platform/snes.h
View file

@ -29,12 +29,13 @@
class DivPlatformSNES: public DivDispatch {
struct Channel {
int freq, baseFreq, pitch, pitch2;
unsigned int audPos, wtLen;
unsigned int audPos;
int sample, wave, ins;
int note;
int panL, panR;
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, useWave, setPos;
signed char vol;
int wtLen;
bool useEnv;
DivMacroInt std;
DivWaveSynth ws;
@ -48,7 +49,6 @@ class DivPlatformSNES: public DivDispatch {
pitch(0),
pitch2(0),
audPos(0),
wtLen(16),
sample(-1),
wave(-1),
ins(-1),
@ -64,6 +64,7 @@ class DivPlatformSNES: public DivDispatch {
useWave(false),
setPos(false),
vol(127),
wtLen(16),
useEnv(false) {}
};
Channel chan[8];