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OPLL: 85% 

compatible drums work (kinda)
This commit is contained in:
tildearrow 2022-02-27 02:58:30 -05:00
parent 79c148849f
commit 77285a65e6
2 changed files with 90 additions and 26 deletions
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73
src/engine/platform/opll.cpp
View File

@ -80,6 +80,8 @@ void DivPlatformOPLL::acquire_nuked(short* bufL, short* bufR, size_t start, size
static int os;
for (size_t h=start; h<start+len; h++) {
os=0;
for (int i=0; i<9; i++) {
if (!writes.empty() && --delay<0) {
// 84 is safe value
QueuedWrite& w=writes.front();
@ -98,11 +100,11 @@ void DivPlatformOPLL::acquire_nuked(short* bufL, short* bufR, size_t start, size
}
OPLL_Clock(&fm,o);
os=(o[0]+o[1])<<7;
os+=(o[0]+o[1]);
}
os*=50;
if (os<-32768) os=-32768;
if (os>32767) os=32767;
//printf("%d\n",o[0]);
bufL[h]=os;
}
}
@ -239,7 +241,12 @@ void DivPlatformOPLL::tick() {
}*/
if (chan[i].keyOn || chan[i].keyOff) {
immWrite(0x20+i,(chan[i].freqH)|(chan[i].state.alg?0x20:0));
if (chan[i].drums) {
drumState&=~(0x10>>(chan[i].note%12));
immWrite(0x0e,0x20|drumState);
} else {
immWrite(0x20+i,(chan[i].freqH)/*|(chan[i].state.alg?0x20:0)*/);
}
//chan[i].keyOn=false;
chan[i].keyOff=false;
}
@ -259,9 +266,16 @@ void DivPlatformOPLL::tick() {
int freqt=toFreq(chan[i].freq);
chan[i].freqH=freqt>>8;
chan[i].freqL=freqt&0xff;
if (!chan[i].drums) {
immWrite(0x10+i,freqt&0xff);
}
if (chan[i].keyOn || chan[i].freqChanged) {
}
if (chan[i].keyOn && chan[i].drums) {
//printf("%d\n",chan[i].note%12);
drumState|=(0x10>>(chan[i].note%12));
immWrite(0x0e,0x20|drumState);
chan[i].keyOn=false;
} else if (chan[i].keyOn || chan[i].freqChanged) {
//immWrite(0x28,0xf0|konOffs[i]);
immWrite(0x20+i,(chan[i].freqH)|(chan[i].active<<4)|(chan[i].state.alg?0x20:0));
chan[i].keyOn=false;
@ -359,14 +373,52 @@ int DivPlatformOPLL::dispatch(DivCommand c) {
rWrite(0x06,(mod.sl<<4)|(mod.rr));
rWrite(0x07,(car.sl<<4)|(car.rr));
}
if (chan[c.chan].state.opllPreset==16) { // compatible drums mode
chan[c.chan].drums=true;
immWrite(0x16,0x20);
immWrite(0x26,0x05);
immWrite(0x16,0x20);
immWrite(0x26,0x05);
immWrite(0x17,0x50);
immWrite(0x27,0x05);
immWrite(0x17,0x50);
immWrite(0x27,0x05);
immWrite(0x18,0xC0);
immWrite(0x28,0x01);
} else {
chan[c.chan].drums=false;
rWrite(0x30+c.chan,(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15)|(chan[c.chan].state.opllPreset<<4));
}
}
chan[c.chan].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].note=c.value;
if (chan[c.chan].drums) {
switch (chan[c.chan].note%12) {
case 0: // kick
drumVol[0]=(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15);
break;
case 1: // snare
drumVol[1]=(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15);
break;
case 2: // tom
drumVol[2]=(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15);
break;
case 3: // top
drumVol[3]=(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15);
break;
default: // hi-hat
drumVol[4]=(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15);
break;
}
rWrite(0x36,drumVol[0]);
rWrite(0x37,drumVol[1]|(drumVol[4]<<4));
rWrite(0x38,drumVol[3]|(drumVol[2]<<4));
}
chan[c.chan].freqChanged=true;
}
chan[c.chan].keyOn=true;
@ -392,7 +444,9 @@ int DivPlatformOPLL::dispatch(DivCommand c) {
if (!chan[c.chan].std.hasVol) {
chan[c.chan].outVol=c.value;
}
if (!chan[c.chan].drums) {
rWrite(0x30+c.chan,(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15)|(chan[c.chan].state.opllPreset<<4));
}
break;
}
case DIV_CMD_GET_VOLUME: {
@ -570,6 +624,13 @@ void DivPlatformOPLL::reset() {
}
lastBusy=60;
drumState=0;
drumVol[0]=0;
drumVol[1]=0;
drumVol[2]=0;
drumVol[3]=0;
drumVol[4]=0;
delay=0;
}
@ -619,7 +680,7 @@ void DivPlatformOPLL::setFlags(unsigned int flags) {
} else {
chipClock=COLOR_NTSC/4.0;
}
rate=chipClock;
rate=chipClock/9;
}
int DivPlatformOPLL::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {

5
src/engine/platform/opll.h
View File

@ -35,7 +35,7 @@ class DivPlatformOPLL: public DivDispatch {
unsigned char freqH, freqL;
int freq, baseFreq, pitch, note;
unsigned char ins;
bool active, insChanged, freqChanged, keyOn, keyOff, portaPause, furnaceDac, inPorta;
bool active, insChanged, freqChanged, keyOn, keyOff, drums, portaPause, furnaceDac, inPorta;
int vol, outVol;
unsigned char pan;
Channel():
@ -51,6 +51,7 @@ class DivPlatformOPLL: public DivDispatch {
freqChanged(false),
keyOn(false),
keyOff(false),
drums(false),
portaPause(false),
furnaceDac(false),
inPorta(false),
@ -69,6 +70,8 @@ class DivPlatformOPLL: public DivDispatch {
opll_t fm;
int delay;
unsigned char lastBusy;
unsigned char drumState;
unsigned char drumVol[5];
unsigned char regPool[256];