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add song tuning

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soon: system clock settings
This commit is contained in:
tildearrow 2022-01-28 00:55:51 -05:00
parent 0071894471
commit ec66b7a21b
26 changed files with 211 additions and 156 deletions
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22
src/engine/platform/genesis.cpp
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@ -9,6 +9,8 @@ static unsigned char konOffs[6]={
0, 1, 2, 4, 5, 6
};
#define CHIP_FREQBASE 9440540
void DivPlatformGenesis::acquire(short* bufL, short* bufR, size_t start, size_t len) {
static short o[2];
static int os[2];
@ -104,15 +106,15 @@ void DivPlatformGenesis::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=644.0f*pow(2.0f,((float)chan[i].std.arp/12.0f));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].std.arp);
} else {
chan[i].baseFreq=644.0f*pow(2.0f,((float)(chan[i].note+(signed char)chan[i].std.arp)/12.0f));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note+(signed char)chan[i].std.arp);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=644.0f*pow(2.0f,((float)chan[i].note/12.0f));
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -307,7 +309,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
}
dacPos=0;
dacPeriod=0;
chan[c.chan].baseFreq=644.0f*pow(2.0f,((float)c.value/12.0f));
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].furnaceDac=true;
} else { // compatible mode
@ -365,7 +367,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
chan[c.chan].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=644.0f*pow(2.0f,((float)c.value/12.0f));
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
}
@ -428,7 +430,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
break;
}
case DIV_CMD_NOTE_PORTA: {
int destFreq=644.0f*pow(2.0f,((float)c.value2/12.0f));
int destFreq=NOTE_FREQUENCY(c.value2);
int newFreq;
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
@ -471,7 +473,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
}
break;
case DIV_CMD_LEGATO: {
chan[c.chan].baseFreq=644.0f*pow(2.0f,((float)c.value/12.0f));
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
break;
@ -638,10 +640,12 @@ void DivPlatformGenesis::notifyInsDeletion(void* ins) {
void DivPlatformGenesis::setPAL(bool pal) {
if (pal) {
rate=211125;
chipClock=COLOR_PAL*12.0/7.0;
} else {
rate=213068;
chipClock=COLOR_NTSC*15.0/7.0;
}
psg.setPAL(pal);
rate=chipClock/36;
}
int DivPlatformGenesis::init(DivEngine* p, int channels, int sugRate, bool pal) {