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Genesis: add DAC distortion flag

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This commit is contained in:
tildearrow 2022-02-02 03:06:30 -05:00
parent ec9cc0e254
commit 545f3ffdf4
3 changed files with 75 additions and 28 deletions
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83
src/engine/platform/genesis.cpp
View file

@ -95,10 +95,14 @@ void DivPlatformGenesis::tick() {
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
DivInstrumentFM::Operator& op=chan[i].state.op[j];
if (isOutput[chan[i].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[i].outVol&0x7f))/127));
if (isMuted[i]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
if (isOutput[chan[i].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[i].outVol&0x7f))/127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
}
@ -165,10 +169,14 @@ void DivPlatformGenesis::tick() {
}
if (m.hadTl) {
op.tl=127-m.tl;
if (isOutput[chan[i].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[i].outVol&0x7f))/127));
if (isMuted[i]) {
rWrite(baseAddr+ADDR_TL,0);
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
if (isOutput[chan[i].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[i].outVol&0x7f))/127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
if (m.hadRs) {
@ -276,6 +284,19 @@ void DivPlatformGenesis::muteChannel(int ch, bool mute) {
return;
}
isMuted[ch]=mute;
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[ch]|opOffs[j];
DivInstrumentFM::Operator& op=chan[ch].state.op[j];
if (isMuted[ch]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (isOutput[chan[ch].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[ch].outVol&0x7f))/127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
rWrite(chanOffs[ch]+ADDR_LRAF,(isMuted[ch]?0:(chan[ch].pan<<6))|(chan[ch].state.fms&7)|((chan[ch].state.ams&3)<<4));
}
@ -342,13 +363,17 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
for (int i=0; i<4; i++) {
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
if (isOutput[chan[c.chan].state.alg][i]) {
if (!chan[c.chan].active || chan[c.chan].insChanged) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[c.chan].outVol&0x7f))/127));
}
if (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (chan[c.chan].insChanged) {
rWrite(baseAddr+ADDR_TL,op.tl);
if (isOutput[chan[c.chan].state.alg][i]) {
if (!chan[c.chan].active || chan[c.chan].insChanged) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[c.chan].outVol&0x7f))/127));
}
} else {
if (chan[c.chan].insChanged) {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
if (chan[c.chan].insChanged) {
@ -391,10 +416,14 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
for (int i=0; i<4; i++) {
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
if (isOutput[chan[c.chan].state.alg][i]) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[c.chan].outVol&0x7f))/127));
if (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
if (isOutput[chan[c.chan].state.alg][i]) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[c.chan].outVol&0x7f))/127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
break;
@ -499,10 +528,14 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.tl=c.value2;
if (isOutput[chan[c.chan].state.alg][c.value]) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[c.chan].outVol&0x7f))/127));
if (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
if (isOutput[chan[c.chan].state.alg][c.value]) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[c.chan].outVol&0x7f))/127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
break;
}
@ -546,10 +579,14 @@ void DivPlatformGenesis::forceIns() {
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
DivInstrumentFM::Operator& op=chan[i].state.op[j];
if (isOutput[chan[i].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[i].outVol&0x7f))/127));
if (isMuted[i]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
if (isOutput[chan[i].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[i].outVol&0x7f))/127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
@ -580,6 +617,7 @@ void* DivPlatformGenesis::getChanState(int ch) {
void DivPlatformGenesis::reset() {
while (!writes.empty()) writes.pop();
OPN2_Reset(&fm);
OPN2_SetChipType(ladder?ym3438_mode_ym2612:0);
if (dumpWrites) {
addWrite(0xffffffff,0);
}
@ -665,11 +703,14 @@ void DivPlatformGenesis::setFlags(unsigned int flags) {
}
psg.setFlags(flags==1);
rate=chipClock/36;
ladder=flags&0x80000000;
OPN2_SetChipType(ladder?ym3438_mode_ym2612:0);
}
int DivPlatformGenesis::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
parent=p;
dumpWrites=false;
ladder=false;
skipRegisterWrites=false;
for (int i=0; i<10; i++) {
isMuted[i]=false;

1
src/engine/platform/genesis.h
View file

@ -61,6 +61,7 @@ class DivPlatformGenesis: public DivDispatch {
unsigned char lfoValue;
bool extMode;
bool ladder;
short oldWrites[512];
short pendingWrites[512];

19
src/gui/gui.cpp
View file

@ -4921,17 +4921,22 @@ bool FurnaceGUI::loop() {
bool sysPal=flags&1;
switch (e->song.system[i]) {
case DIV_SYSTEM_GENESIS:
case DIV_SYSTEM_GENESIS_EXT:
if (ImGui::RadioButton("NTSC (7.67MHz)",flags==0)) {
e->setSysFlags(i,0);
case DIV_SYSTEM_GENESIS_EXT: {
if (ImGui::RadioButton("NTSC (7.67MHz)",(flags&3)==0)) {
e->setSysFlags(i,(flags&0x80000000)|0);
}
if (ImGui::RadioButton("PAL (7.61MHz)",flags==1)) {
e->setSysFlags(i,1);
if (ImGui::RadioButton("PAL (7.61MHz)",(flags&3)==1)) {
e->setSysFlags(i,(flags&0x80000000)|1);
}
if (ImGui::RadioButton("FM Towns (8MHz)",flags==2)) {
e->setSysFlags(i,2);
if (ImGui::RadioButton("FM Towns (8MHz)",(flags&3)==2)) {
e->setSysFlags(i,(flags&0x80000000)|2);
}
bool ladder=flags&0x80000000;
if (ImGui::Checkbox("Enable DAC distortion",&ladder)) {
e->setSysFlags(i,(flags&(~0x80000000))|(ladder?0x80000000:0));
}
break;
}
case DIV_SYSTEM_SMS:
ImGui::Text("Clock rate:");
if (ImGui::RadioButton("NTSC (3.58MHz)",(flags&3)==0)) {