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FDS: possibly final work

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the last thing left to do is the filter, but everything works now
This commit is contained in:
tildearrow 2022-04-05 18:18:14 -05:00
parent 4ba50b433a
commit 280cbb3e39
4 changed files with 122 additions and 6 deletions
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60
src/engine/platform/fds.cpp
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@ -63,10 +63,10 @@ const char* DivPlatformFDS::getEffectName(unsigned char effect) {
return "11xx: Set modulation depth";
break;
case 0x12:
return "12xy: Set modulation frequency high byte (x: enable; y: value)";
return "12xy: Set modulation speed high byte (x: enable; y: value)";
break;
case 0x13:
return "13xx: Set modulation frequency low byte";
return "13xx: Set modulation speed low byte";
break;
case 0x14:
return "14xx: Set modulator position";
@ -163,6 +163,22 @@ void DivPlatformFDS::tick() {
//if (!chan[i].keyOff) chan[i].keyOn=true;
}
}
if (chan[i].std.hadEx1) { // mod depth
chan[i].modOn=chan[i].std.ex1;
chan[i].modDepth=chan[i].std.ex1;
rWrite(0x4084,(chan[i].modOn<<7)|0x40|chan[i].modDepth);
}
if (chan[i].std.hadEx2) { // mod speed
chan[i].modFreq=chan[i].std.ex2;
rWrite(0x4086,chan[i].modFreq&0xff);
rWrite(0x4087,chan[i].modFreq>>8);
}
if (chan[i].std.hadEx3) { // mod position
chan[i].modPos=chan[i].std.ex3;
rWrite(0x4087,0x80|chan[i].modFreq>>8);
rWrite(0x4085,chan[i].modPos);
rWrite(0x4087,chan[i].modFreq>>8);
}
if (chan[i].sweepChanged) {
chan[i].sweepChanged=false;
if (i==0) {
@ -199,6 +215,42 @@ int DivPlatformFDS::dispatch(DivCommand c) {
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
if (chan[c.chan].insChanged) {
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
if (ins->fds.initModTableWithFirstWave) { // compatible
if (chan[c.chan].wave==-1) {
DivWavetable* wt=parent->getWave(0);
for (int i=0; i<32; i++) {
if (wt->max<1 || wt->len<1) {
rWrite(0x4040+i,0);
} else {
int data=wt->data[i*MIN(32,wt->len)/32]*7/wt->max;
if (data<0) data=0;
if (data>7) data=7;
chan[c.chan].modTable[i]=data;
}
}
rWrite(0x4087,0x80|chan[c.chan].modFreq>>8);
for (int i=0; i<32; i++) {
rWrite(0x4088,chan[c.chan].modTable[i]);
}
rWrite(0x4087,chan[c.chan].modFreq>>8);
}
} else { // The Familiar Way
chan[c.chan].modDepth=ins->fds.modDepth;
chan[c.chan].modOn=ins->fds.modDepth;
chan[c.chan].modFreq=ins->fds.modSpeed;
rWrite(0x4084,(chan[c.chan].modOn<<7)|0x40|chan[c.chan].modDepth);
rWrite(0x4086,chan[c.chan].modFreq&0xff);
rWrite(0x4087,0x80|chan[c.chan].modFreq>>8);
for (int i=0; i<32; i++) {
chan[c.chan].modTable[i]=ins->fds.modTable[i]&7;
rWrite(0x4088,chan[c.chan].modTable[i]);
}
rWrite(0x4087,chan[c.chan].modFreq>>8);
}
}
chan[c.chan].active=true;
chan[c.chan].keyOn=true;
chan[c.chan].std.init(parent->getIns(chan[c.chan].ins));
@ -256,7 +308,9 @@ int DivPlatformFDS::dispatch(DivCommand c) {
break;
case DIV_CMD_FDS_MOD_POS:
chan[c.chan].modPos=c.value&0x7f;
// TODO
rWrite(0x4087,0x80|chan[c.chan].modFreq>>8);
rWrite(0x4085,chan[c.chan].modPos);
rWrite(0x4087,chan[c.chan].modFreq>>8);
break;
case DIV_CMD_FDS_MOD_WAVE: {
DivWavetable* wt=parent->getWave(c.value);