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T6W28: now implement easy noise here

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This commit is contained in:
tildearrow 2022-11-28 03:05:14 -05:00
parent cbff29deb6
commit 965725327b
4 changed files with 47 additions and 13 deletions
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2
src/engine/platform/sms.cpp
View file

@ -137,7 +137,7 @@ int DivPlatformSMS::snCalcFreq(int ch) {
if (ret<0) ret=0;
return ret;
}
return parent->calcFreq(chan[ch].baseFreq,chan[ch].pitch,true,0,chan[ch].pitch2,chipClock,toneDivider);
return parent->calcFreq(chan[ch].baseFreq,chan[ch].pitch,true,0,chan[ch].pitch2,chipClock,ch==3?noiseDivider:toneDivider);
}
void DivPlatformSMS::tick(bool sysTick) {

39
src/engine/platform/t6w28.cpp
View file

@ -81,10 +81,29 @@ void DivPlatformT6W28::writeOutVol(int ch) {
}
}
double DivPlatformT6W28::NOTE_SN(int ch, int note) {
double CHIP_DIVIDER=16;
if (ch==3) CHIP_DIVIDER=15;
if (parent->song.linearPitch==2 || !easyNoise) {
return NOTE_PERIODIC(note);
}
if (note>107) {
return MAX(0,13-107);
}
return NOTE_PERIODIC(note);
}
int DivPlatformT6W28::snCalcFreq(int ch) {
if (parent->song.linearPitch==2 && easyNoise && chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2>(107<<7)) {
int ret=(((13<<7)+0x40)-(chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2-(107<<7)))>>7;
if (ret<0) ret=0;
return ret;
}
return parent->calcFreq(chan[ch].baseFreq,chan[ch].pitch,true,0,chan[ch].pitch2,chipClock,ch==3?15:16);
}
void DivPlatformT6W28::tick(bool sysTick) {
for (int i=0; i<4; i++) {
double CHIP_DIVIDER=16;
if (i==3) CHIP_DIVIDER=15;
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=VOL_SCALE_LOG_BROKEN(chan[i].vol&15,MIN(15,chan[i].std.vol.val),15);
@ -92,7 +111,7 @@ void DivPlatformT6W28::tick(bool sysTick) {
if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
int noiseSeek=parent->calcArp(chan[i].note,chan[i].std.arp.val);
chan[i].baseFreq=NOTE_PERIODIC(noiseSeek);
chan[i].baseFreq=NOTE_SN(i,noiseSeek);
}
chan[i].freqChanged=true;
}
@ -124,7 +143,7 @@ void DivPlatformT6W28::tick(bool sysTick) {
rWrite(1,0xe0+chan[i].duty);
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true,0,chan[i].pitch2,chipClock,CHIP_DIVIDER);
chan[i].freq=snCalcFreq(i);
if (chan[i].freq>1023) chan[i].freq=1023;
if (i==3) {
rWrite(1,0x80|(2<<5)|(chan[3].freq&15));
@ -141,13 +160,11 @@ void DivPlatformT6W28::tick(bool sysTick) {
}
int DivPlatformT6W28::dispatch(DivCommand c) {
double CHIP_DIVIDER=16;
if (c.chan==3) CHIP_DIVIDER=15;
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_PCE);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].baseFreq=NOTE_SN(c.chan,c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
@ -197,7 +214,7 @@ int DivPlatformT6W28::dispatch(DivCommand c) {
chan[c.chan].freqChanged=true;
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=NOTE_PERIODIC(c.value2);
int destFreq=NOTE_SN(c.chan,c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
@ -231,15 +248,15 @@ int DivPlatformT6W28::dispatch(DivCommand c) {
break;
}
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.arp.will && !chan[c.chan].std.arp.mode)?(chan[c.chan].std.arp.val):(0)));
chan[c.chan].baseFreq=NOTE_SN(c.chan,c.value+((chan[c.chan].std.arp.will && !chan[c.chan].std.arp.mode)?(chan[c.chan].std.arp.val):(0)));
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
break;
case DIV_CMD_PRE_PORTA:
if (chan[c.chan].active && c.value2) {
if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_T6W28));
}
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will) chan[c.chan].baseFreq=NOTE_SN(c.chan,chan[c.chan].note);
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_GET_VOLMAX:

4
src/engine/platform/t6w28.h
View file

@ -76,6 +76,10 @@ class DivPlatformT6W28: public DivDispatch {
unsigned char regPool[128];
friend void putDispatchChip(void*,int);
friend void putDispatchChan(void*,int,int);
double NOTE_SN(int ch, int note);
int snCalcFreq(int ch);
void writeOutVol(int ch);
public:
void acquire(short* bufL, short* bufR, size_t start, size_t len);

15
src/gui/sysConf.cpp
View file

@ -1527,12 +1527,25 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
}
break;
}
case DIV_SYSTEM_T6W28: {
bool noEasyNoise=flags.getBool("noEasyNoise",false);
if (ImGui::Checkbox("Disable easy period to note mapping on upper octaves",&noEasyNoise)) {
altered=true;
}
if (altered) {
e->lockSave([&]() {
flags.set("noEasyNoise",noEasyNoise);
});
}
break;
}
case DIV_SYSTEM_SWAN:
case DIV_SYSTEM_VERA:
case DIV_SYSTEM_BUBSYS_WSG:
case DIV_SYSTEM_YMU759:
case DIV_SYSTEM_PET:
case DIV_SYSTEM_T6W28:
case DIV_SYSTEM_VBOY:
ImGui::Text("nothing to configure");
break;