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Genesis: implement arp macros

This commit is contained in:
tildearrow 2022-01-23 15:55:12 -05:00
parent 45d9bef2a8
commit 524f8c312e
2 changed files with 44 additions and 5 deletions
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25
src/engine/platform/genesis.cpp
View File

@ -83,6 +83,23 @@ void DivPlatformGenesis::tick() {
for (int i=0; i<6; i++) {
if (i==2 && extMode) continue;
chan[i].std.next();
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));
} else {
chan[i].baseFreq=644.0f*pow(2.0f,((float)(chan[i].note+(signed char)chan[i].std.arp-12)/12.0f));
}
}
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].freqChanged=true;
}
}
if (chan[i].std.hadAlg) {
chan[i].state.alg=chan[i].std.alg;
rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
@ -314,6 +331,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=644.0f*pow(2.0f,((float)c.value/12.0f));
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
}
chan[c.chan].keyOn=true;
@ -397,7 +415,10 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
chan[c.chan].baseFreq=newFreq;
chan[c.chan].portaPause=false;
chan[c.chan].freqChanged=true;
if (return2) return 2;
if (return2) {
chan[c.chan].inPorta=false;
return 2;
}
break;
}
case DIV_CMD_SAMPLE_MODE: {
@ -413,6 +434,7 @@ 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].note=c.value;
chan[c.chan].freqChanged=true;
break;
}
@ -463,6 +485,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
return 127;
break;
case DIV_CMD_PRE_PORTA:
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_PRE_NOTE:
break;

24
src/engine/platform/genesis.h
View File

@ -12,13 +12,29 @@ class DivPlatformGenesis: public DivDispatch {
DivInstrumentFM state;
DivMacroInt std;
unsigned char freqH, freqL;
int freq, baseFreq, pitch;
int freq, baseFreq, pitch, note;
unsigned char ins;
signed char konCycles;
bool active, insChanged, freqChanged, keyOn, keyOff, portaPause, furnaceDac;
bool active, insChanged, freqChanged, keyOn, keyOff, portaPause, furnaceDac, inPorta;
int vol;
unsigned char pan;
Channel(): freqH(0), freqL(0), freq(0), baseFreq(0), pitch(0), ins(-1), active(false), insChanged(true), freqChanged(false), keyOn(false), keyOff(false), portaPause(false), furnaceDac(false), vol(0), pan(3) {}
Channel():
freqH(0),
freqL(0),
freq(0),
baseFreq(0),
pitch(0),
note(0),
ins(-1),
active(false),
insChanged(true),
freqChanged(false),
keyOn(false),
keyOff(false),
portaPause(false),
furnaceDac(false),
inPorta(false),
vol(0),
pan(3) {}
};
Channel chan[10];
bool isMuted[10];