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furnace/src/engine/platform/genesis.cpp
tildearrow 48db9a1d0c chip flags rewrite, part 4 - DO NOT USE 
the next part is to drop systemFlagsOld completely
and then to fix the GUI
2022-09-29 20:13:40 -05:00

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/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2022 tildearrow and contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "genesis.h"
#include "../engine.h"
#include <string.h>
#include <math.h>
#define CHIP_FREQBASE fmFreqBase
#define CHIP_DIVIDER fmDivBase
#define IS_REALLY_MUTED(x) (isMuted[x] && (x<5 || !softPCM || (isMuted[5] && isMuted[6])))
void DivPlatformGenesis::processDAC() {
if (softPCM) {
softPCMTimer+=chipClock/576;
if (softPCMTimer>rate) {
softPCMTimer-=rate;
int sample=0;
for (int i=5; i<7; i++) {
if (chan[i].dacSample!=-1) {
DivSample* s=parent->getSample(chan[i].dacSample);
if (!isMuted[i] && s->samples>0) {
if (parent->song.noOPN2Vol) {
chan[i].dacOutput=s->data8[chan[i].dacDirection?(s->samples-chan[i].dacPos-1):chan[i].dacPos];
} else {
chan[i].dacOutput=(s->data8[chan[i].dacDirection?(s->samples-chan[i].dacPos-1):chan[i].dacPos]*dacVolTable[chan[i].outVol])>>7;
}
sample+=chan[i].dacOutput;
} else {
chan[i].dacOutput=0;
}
chan[i].dacPeriod+=chan[i].dacRate;
if (chan[i].dacPeriod>=(chipClock/576)) {
if (s->samples>0) {
while (chan[i].dacPeriod>=(chipClock/576)) {
++chan[i].dacPos;
if (!chan[i].dacDirection && (s->isLoopable() && chan[i].dacPos>=(unsigned int)s->loopEnd)) {
chan[i].dacPos=s->loopStart;
} else if (chan[i].dacPos>=s->samples) {
chan[i].dacSample=-1;
chan[i].dacPeriod=0;
break;
}
chan[i].dacPeriod-=(chipClock/576);
}
} else {
chan[i].dacSample=-1;
}
}
}
}
//sample>>=1;
if (sample<-128) sample=-128;
if (sample>127) sample=127;
urgentWrite(0x2a,(unsigned char)sample+0x80);
}
} else {
if (!chan[5].dacReady) {
chan[5].dacDelay+=32000;
if (chan[5].dacDelay>=rate) {
chan[5].dacDelay-=rate;
chan[5].dacReady=true;
}
}
if (chan[5].dacMode && chan[5].dacSample!=-1) {
chan[5].dacPeriod+=chan[5].dacRate;
if (chan[5].dacPeriod>=rate) {
DivSample* s=parent->getSample(chan[5].dacSample);
if (s->samples>0) {
if (!isMuted[5]) {
if (chan[5].dacReady && writes.size()<16) {
int sample;
if (parent->song.noOPN2Vol) {
sample=s->data8[chan[5].dacDirection?(s->samples-chan[5].dacPos-1):chan[5].dacPos];
} else {
sample=(s->data8[chan[5].dacDirection?(s->samples-chan[5].dacPos-1):chan[5].dacPos]*dacVolTable[chan[5].outVol])>>7;
}
urgentWrite(0x2a,(unsigned char)sample+0x80);
chan[5].dacReady=false;
}
}
chan[5].dacPos++;
if (!chan[5].dacDirection && (s->isLoopable() && chan[5].dacPos>=(unsigned int)s->loopEnd)) {
chan[5].dacPos=s->loopStart;
} else if (chan[5].dacPos>=s->samples) {
chan[5].dacSample=-1;
if (parent->song.brokenDACMode) {
rWrite(0x2b,0);
}
}
while (chan[5].dacPeriod>=rate) chan[5].dacPeriod-=rate;
} else {
chan[5].dacSample=-1;
}
}
}
}
}
void DivPlatformGenesis::acquire_nuked(short* bufL, short* bufR, size_t start, size_t len) {
static short o[2];
static int os[2];
for (size_t h=start; h<start+len; h++) {
processDAC();
os[0]=0; os[1]=0;
for (int i=0; i<6; i++) {
if (!writes.empty() && --delay<0) {
delay=0;
QueuedWrite& w=writes.front();
if (w.addrOrVal) {
OPN2_Write(&fm,0x1+((w.addr>>8)<<1),w.val);
//printf("write: %x = %.2x\n",w.addr,w.val);
lastBusy=0;
regPool[w.addr&0x1ff]=w.val;
writes.pop_front();
} else {
lastBusy++;
if (fm.write_busy==0) {
//printf("busycounter: %d\n",lastBusy);
OPN2_Write(&fm,0x0+((w.addr>>8)<<1),w.addr);
w.addrOrVal=true;
}
}
}
OPN2_Clock(&fm,o); os[0]+=o[0]; os[1]+=o[1];
//OPN2_Write(&fm,0,0);
if (i==5) {
if (fm.dacen) {
if (softPCM) {
oscBuf[5]->data[oscBuf[5]->needle++]=chan[5].dacOutput<<7;
oscBuf[6]->data[oscBuf[6]->needle++]=chan[6].dacOutput<<7;
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=fm.dacdata<<7;
}
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=fm.ch_out[i]<<7;
}
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=fm.ch_out[i]<<7;
}
}
os[0]=(os[0]<<5);
if (os[0]<-32768) os[0]=-32768;
if (os[0]>32767) os[0]=32767;
os[1]=(os[1]<<5);
if (os[1]<-32768) os[1]=-32768;
if (os[1]>32767) os[1]=32767;
bufL[h]=os[0];
bufR[h]=os[1];
}
}
void DivPlatformGenesis::acquire_ymfm(short* bufL, short* bufR, size_t start, size_t len) {
static int os[2];
ymfm::ym2612::fm_engine* fme=fm_ymfm->debug_engine();
for (size_t h=start; h<start+len; h++) {
processDAC();
os[0]=0; os[1]=0;
if (!writes.empty()) {
QueuedWrite& w=writes.front();
fm_ymfm->write(0x0+((w.addr>>8)<<1),w.addr);
fm_ymfm->write(0x1+((w.addr>>8)<<1),w.val);
regPool[w.addr&0x1ff]=w.val;
writes.pop_front();
lastBusy=1;
}
if (ladder) {
fm_ymfm->generate(&out_ymfm);
} else {
((ymfm::ym3438*)fm_ymfm)->generate(&out_ymfm);
}
os[0]=out_ymfm.data[0];
os[1]=out_ymfm.data[1];
//OPN2_Write(&fm,0,0);
for (int i=0; i<6; i++) {
if (i==5) {
if (fm_ymfm->debug_dac_enable()) {
if (softPCM) {
oscBuf[5]->data[oscBuf[5]->needle++]=chan[5].dacOutput<<7;
oscBuf[6]->data[oscBuf[6]->needle++]=chan[6].dacOutput<<7;
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=fm_ymfm->debug_dac_data()<<7;
}
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=(fme->debug_channel(i)->debug_output(0)+fme->debug_channel(i)->debug_output(1))<<6;
}
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=(fme->debug_channel(i)->debug_output(0)+fme->debug_channel(i)->debug_output(1))<<6;
}
}
if (os[0]<-32768) os[0]=-32768;
if (os[0]>32767) os[0]=32767;
if (os[1]<-32768) os[1]=-32768;
if (os[1]>32767) os[1]=32767;
bufL[h]=os[0];
bufR[h]=os[1];
}
}
void DivPlatformGenesis::acquire(short* bufL, short* bufR, size_t start, size_t len) {
if (useYMFM) {
acquire_ymfm(bufL,bufR,start,len);
} else {
acquire_nuked(bufL,bufR,start,len);
}
}
void DivPlatformGenesis::tick(bool sysTick) {
for (int i=0; i<(softPCM?7:6); i++) {
if (i==2 && extMode) continue;
chan[i].std.next();
if (chan[i].std.vol.had) {
int inVol=chan[i].std.vol.val;
if (chan[i].furnaceDac && inVol>0) {
inVol+=63;
}
chan[i].outVol=VOL_SCALE_LOG(chan[i].vol,MIN(127,inVol),127);
if (i<6) for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
DivInstrumentFM::Operator& op=chan[i].state.op[j];
if (isMuted[i]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (KVS(i,j)) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
}
if (i>=5 && chan[i].furnaceDac) {
if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
chan[i].baseFreq=parent->calcBaseFreq(1,1,parent->calcArp(chan[i].note,chan[i].std.arp.val),false);
}
chan[i].freqChanged=true;
}
} else {
if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
chan[i].baseFreq=NOTE_FNUM_BLOCK(parent->calcArp(chan[i].note,chan[i].std.arp.val),11);
}
chan[i].freqChanged=true;
}
}
if (i>=5 && chan[i].furnaceDac) {
if (chan[i].std.panL.had) {
chan[5].pan&=1;
chan[5].pan|=chan[i].std.panL.val?2:0;
}
if (chan[i].std.panR.had) {
chan[5].pan&=2;
chan[5].pan|=chan[i].std.panR.val?1:0;
}
if (chan[i].std.panL.had || chan[i].std.panR.had) {
rWrite(chanOffs[5]+ADDR_LRAF,(IS_REALLY_MUTED(i)?0:(chan[5].pan<<6))|(chan[5].state.fms&7)|((chan[5].state.ams&3)<<4));
}
} else {
if (chan[i].std.panL.had) {
chan[i].pan=chan[i].std.panL.val&3;
if (i<6) {
rWrite(chanOffs[i]+ADDR_LRAF,(IS_REALLY_MUTED(i)?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
}
}
}
if (chan[i].std.pitch.had) {
if (chan[i].std.pitch.mode) {
chan[i].pitch2+=chan[i].std.pitch.val;
CLAMP_VAR(chan[i].pitch2,-32768,32767);
} else {
chan[i].pitch2=chan[i].std.pitch.val;
}
chan[i].freqChanged=true;
}
if (i>=6) continue;
if (chan[i].std.phaseReset.had) {
if (chan[i].std.phaseReset.val==1 && chan[i].active) {
chan[i].keyOn=true;
}
}
if (chan[i].std.alg.had) {
chan[i].state.alg=chan[i].std.alg.val;
rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
DivInstrumentFM::Operator& op=chan[i].state.op[j];
if (isMuted[i]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (KVS(i,j)) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
}
if (chan[i].std.fb.had) {
chan[i].state.fb=chan[i].std.fb.val;
rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
}
if (chan[i].std.fms.had) {
chan[i].state.fms=chan[i].std.fms.val;
rWrite(chanOffs[i]+ADDR_LRAF,(IS_REALLY_MUTED(i)?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
}
if (chan[i].std.ams.had) {
chan[i].state.ams=chan[i].std.ams.val;
rWrite(chanOffs[i]+ADDR_LRAF,(IS_REALLY_MUTED(i)?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
}
if (chan[i].std.ex4.had && chan[i].active) {
chan[i].opMask=chan[i].std.ex4.val&15;
chan[i].opMaskChanged=true;
}
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
DivInstrumentFM::Operator& op=chan[i].state.op[j];
DivMacroInt::IntOp& m=chan[i].std.op[j];
if (m.am.had) {
op.am=m.am.val;
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
if (m.ar.had) {
op.ar=m.ar.val;
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
if (m.dr.had) {
op.dr=m.dr.val;
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
if (m.mult.had) {
op.mult=m.mult.val;
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
}
if (m.rr.had) {
op.rr=m.rr.val;
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
if (m.sl.had) {
op.sl=m.sl.val;
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
if (m.tl.had) {
op.tl=127-m.tl.val;
if (isMuted[i]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (KVS(i,j)) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
if (m.rs.had) {
op.rs=m.rs.val;
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
if (m.dt.had) {
op.dt=m.dt.val;
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
}
if (m.d2r.had) {
op.d2r=m.d2r.val;
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
}
if (m.ssg.had) {
op.ssgEnv=m.ssg.val;
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
}
}
}
for (int i=0; i<512; i++) {
if (pendingWrites[i]!=oldWrites[i]) {
immWrite(i,pendingWrites[i]&0xff);
oldWrites[i]=pendingWrites[i];
}
}
for (int i=0; i<6; i++) {
if (i==2 && extMode) continue;
if (chan[i].keyOn || chan[i].keyOff) {
if (chan[i].hardReset && chan[i].keyOn) {
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
immWrite(baseAddr+ADDR_SL_RR,0x0f);
immWrite(baseAddr+ADDR_TL,0x7f);
oldWrites[baseAddr+ADDR_SL_RR]=-1;
oldWrites[baseAddr+ADDR_TL]=-1;
//rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
}
immWrite(0x28,0x00|konOffs[i]);
if (chan[i].hardReset && chan[i].keyOn) {
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
for (int k=0; k<5; k++) {
immWrite(baseAddr+ADDR_SL_RR,0x0f);
}
}
}
chan[i].keyOff=false;
}
}
for (int i=0; i<7; i++) {
if (i==2 && extMode) continue;
if (chan[i].freqChanged) {
if (parent->song.linearPitch==2) {
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,2,chan[i].pitch2,chipClock,CHIP_FREQBASE,11);
} else {
int fNum=parent->calcFreq(chan[i].baseFreq&0x7ff,chan[i].pitch,false,2,chan[i].pitch2,chipClock,CHIP_FREQBASE,11);
int block=(chan[i].baseFreq&0xf800)>>11;
if (fNum<0) fNum=0;
if (fNum>2047) {
while (block<7) {
fNum>>=1;
block++;
}
if (fNum>2047) fNum=2047;
}
chan[i].freq=(block<<11)|fNum;
}
if (chan[i].freq>0x3fff) chan[i].freq=0x3fff;
if (i<6) {
immWrite(chanOffs[i]+ADDR_FREQH,chan[i].freq>>8);
immWrite(chanOffs[i]+ADDR_FREQ,chan[i].freq&0xff);
}
if (chan[i].furnaceDac && chan[i].dacMode) {
double off=1.0;
if (chan[i].dacSample>=0 && chan[i].dacSample<parent->song.sampleLen) {
DivSample* s=parent->getSample(chan[i].dacSample);
if (s->centerRate<1) {
off=1.0;
} else {
off=(double)s->centerRate/8363.0;
}
}
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,2,chan[i].pitch2,1,1);
chan[i].dacRate=chan[i].freq*off;
if (chan[i].dacRate<1) chan[i].dacRate=1;
if (dumpWrites) addWrite(0xffff0001,chan[i].dacRate);
}
chan[i].freqChanged=false;
}
if (chan[i].keyOn || chan[i].opMaskChanged) {
if (i<6) immWrite(0x28,(chan[i].opMask<<4)|konOffs[i]);
chan[i].opMaskChanged=false;
chan[i].keyOn=false;
}
}
}
void DivPlatformGenesis::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
if (ch>6) return;
if (ch<6) {
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 (KVS(ch,j)) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[ch].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
} else {
ch--;
}
rWrite(chanOffs[ch]+ADDR_LRAF,(IS_REALLY_MUTED(ch)?0:(chan[ch].pan<<6))|(chan[ch].state.fms&7)|((chan[ch].state.ams&3)<<4));
}
int DivPlatformGenesis::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_FM);
if (c.chan==7 && extMode && softPCM) { // CSM
chan[c.chan].macroInit(ins);
chan[c.chan].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].portaPause=false;
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
}
chan[c.chan].keyOn=true;
chan[c.chan].active=true;
break;
}
if (c.chan>=5) {
if (ins->type==DIV_INS_AMIGA) {
chan[c.chan].dacMode=1;
rWrite(0x2b,1<<7);
} else if (chan[c.chan].furnaceDac) {
chan[c.chan].dacMode=0;
rWrite(0x2b,0<<7);
}
}
if (c.chan>=5 && chan[c.chan].dacMode) {
if (skipRegisterWrites) break;
if (ins->type==DIV_INS_AMIGA) { // Furnace mode
chan[c.chan].dacSample=ins->amiga.getSample(c.value);
if (chan[c.chan].dacSample<0 || chan[c.chan].dacSample>=parent->song.sampleLen) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002,0);
break;
} else {
rWrite(0x2b,1<<7);
if (dumpWrites) addWrite(0xffff0000,chan[c.chan].dacSample);
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=parent->calcBaseFreq(1,1,c.value,false);
chan[c.chan].portaPause=false;
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
}
chan[c.chan].furnaceDac=true;
chan[c.chan].macroInit(ins);
if (!chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
// ???
//chan[c.chan].keyOn=true;
chan[c.chan].active=true;
} else { // compatible mode
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
}
chan[c.chan].dacSample=12*chan[c.chan].sampleBank+chan[c.chan].note%12;
if (chan[c.chan].dacSample>=parent->song.sampleLen) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002,0);
break;
} else {
rWrite(0x2b,1<<7);
if (dumpWrites) addWrite(0xffff0000,chan[c.chan].dacSample);
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
chan[c.chan].dacRate=MAX(1,parent->getSample(chan[c.chan].dacSample)->rate);
if (dumpWrites) addWrite(0xffff0001,parent->getSample(chan[c.chan].dacSample)->rate);
chan[c.chan].furnaceDac=false;
}
break;
}
if (c.chan>=6) break;
if (chan[c.chan].insChanged) {
chan[c.chan].state=ins->fm;
chan[c.chan].opMask=
(chan[c.chan].state.op[0].enable?1:0)|
(chan[c.chan].state.op[2].enable?2:0)|
(chan[c.chan].state.op[1].enable?4:0)|
(chan[c.chan].state.op[3].enable?8:0);
}
chan[c.chan].macroInit(ins);
if (!chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
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 (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (KVS(c.chan,i)) {
if (!chan[c.chan].active || chan[c.chan].insChanged) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(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) {
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
}
}
if (chan[c.chan].insChanged) {
rWrite(chanOffs[c.chan]+ADDR_FB_ALG,(chan[c.chan].state.alg&7)|(chan[c.chan].state.fb<<3));
rWrite(chanOffs[c.chan]+ADDR_LRAF,(IS_REALLY_MUTED(c.chan)?0:(chan[c.chan].pan<<6))|(chan[c.chan].state.fms&7)|((chan[c.chan].state.ams&3)<<4));
}
chan[c.chan].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_FNUM_BLOCK(c.value,11);
chan[c.chan].portaPause=false;
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
}
chan[c.chan].keyOn=true;
chan[c.chan].active=true;
break;
}
case DIV_CMD_NOTE_OFF:
if (c.chan>=5 && c.chan<7) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002,0);
if (parent->song.brokenDACMode) {
rWrite(0x2b,0);
if (chan[c.chan].dacMode) break;
}
}
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
chan[c.chan].active=false;
break;
case DIV_CMD_NOTE_OFF_ENV:
if (c.chan>=5) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002,0);
}
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
chan[c.chan].active=false;
chan[c.chan].std.release();
break;
case DIV_CMD_ENV_RELEASE:
chan[c.chan].std.release();
break;
case DIV_CMD_VOLUME: {
chan[c.chan].vol=c.value;
if (!chan[c.chan].std.vol.has) {
chan[c.chan].outVol=c.value;
}
if (c.chan>=6) break;
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 (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (KVS(c.chan,i)) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
break;
}
case DIV_CMD_GET_VOLUME: {
return chan[c.chan].vol;
break;
}
case DIV_CMD_INSTRUMENT:
if (chan[c.chan].ins!=c.value || c.value2==1) {
chan[c.chan].insChanged=true;
}
chan[c.chan].ins=c.value;
break;
case DIV_CMD_PANNING: {
if (c.chan>5) c.chan=5;
if (c.value==0 && c.value2==0) {
chan[c.chan].pan=3;
} else {
chan[c.chan].pan=(c.value2>0)|((c.value>0)<<1);
}
rWrite(chanOffs[c.chan]+ADDR_LRAF,(IS_REALLY_MUTED(c.chan)?0:(chan[c.chan].pan<<6))|(chan[c.chan].state.fms&7)|((chan[c.chan].state.ams&3)<<4));
break;
}
case DIV_CMD_PITCH: {
chan[c.chan].pitch=c.value;
chan[c.chan].freqChanged=true;
break;
}
case DIV_CMD_NOTE_PORTA: {
if (parent->song.linearPitch==2) {
int destFreq=NOTE_FREQUENCY(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
if (chan[c.chan].baseFreq>=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
} else {
chan[c.chan].baseFreq-=c.value;
if (chan[c.chan].baseFreq<=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
}
chan[c.chan].freqChanged=true;
if (return2) {
chan[c.chan].inPorta=false;
return 2;
}
break;
}
if (c.chan==7) {
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
if (chan[c.chan].baseFreq>=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
} else {
chan[c.chan].baseFreq-=c.value;
if (chan[c.chan].baseFreq<=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
}
chan[c.chan].freqChanged=true;
if (return2) {
chan[c.chan].inPorta=false;
return 2;
}
break;
}
if (c.chan>=5 && chan[c.chan].furnaceDac && chan[c.chan].dacMode) {
int destFreq=parent->calcBaseFreq(1,1,c.value2,false);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value*16;
if (chan[c.chan].baseFreq>=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
} else {
chan[c.chan].baseFreq-=c.value*16;
if (chan[c.chan].baseFreq<=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
}
chan[c.chan].freqChanged=true;
if (return2) {
chan[c.chan].inPorta=false;
return 2;
}
break;
}
PLEASE_HELP_ME(chan[c.chan]);
break;
}
case DIV_CMD_SAMPLE_MODE: {
if (c.chan<5) c.chan=5;
chan[c.chan].dacMode=c.value;
rWrite(0x2b,c.value<<7);
break;
}
case DIV_CMD_SAMPLE_BANK:
if (c.chan<5) c.chan=5;
chan[c.chan].sampleBank=c.value;
if (chan[c.chan].sampleBank>(parent->song.sample.size()/12)) {
chan[c.chan].sampleBank=parent->song.sample.size()/12;
}
break;
case DIV_CMD_SAMPLE_DIR: {
if (c.chan<5) c.chan=5;
chan[c.chan].dacDirection=c.value;
if (dumpWrites) addWrite(0xffff0003,chan[c.chan].dacDirection);
break;
}
case DIV_CMD_LEGATO: {
if (c.chan==7) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
} else if (c.chan>=5 && chan[c.chan].furnaceDac && chan[c.chan].dacMode) {
chan[c.chan].baseFreq=parent->calcBaseFreq(1,1,c.value,false);
} else {
chan[c.chan].baseFreq=NOTE_FNUM_BLOCK(c.value,11);
}
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
break;
}
case DIV_CMD_FM_EXTCH: {
if (extSys) {
extMode=c.value;
immWrite(0x27,extMode?0x40:0);
}
break;
}
case DIV_CMD_FM_LFO: {
if (c.chan>=6) break;
lfoValue=(c.value&7)|((c.value>>4)<<3);
rWrite(0x22,lfoValue);
break;
}
case DIV_CMD_FM_FB: {
if (c.chan>=6) break;
chan[c.chan].state.fb=c.value&7;
rWrite(chanOffs[c.chan]+ADDR_FB_ALG,(chan[c.chan].state.alg&7)|(chan[c.chan].state.fb<<3));
break;
}
case DIV_CMD_FM_MULT: {
if (c.chan>=6) break;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.mult=c.value2&15;
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
break;
}
case DIV_CMD_FM_TL: {
if (c.chan>=6) break;
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 (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (KVS(c.chan,c.value)) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
break;
}
case DIV_CMD_FM_AR: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.ar=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.ar=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
break;
}
case DIV_CMD_FM_RS: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.rs=c.value2&3;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.rs=c.value2&3;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
break;
}
case DIV_CMD_FM_AM: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.am=c.value2&1;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.am=c.value2&1;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
break;
}
case DIV_CMD_FM_DR: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.dr=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.dr=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
break;
}
case DIV_CMD_FM_SL: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.sl=c.value2&15;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.sl=c.value2&15;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
break;
}
case DIV_CMD_FM_RR: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.rr=c.value2&15;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.rr=c.value2&15;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
break;
}
case DIV_CMD_FM_D2R: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.d2r=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.d2r=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
}
break;
}
case DIV_CMD_FM_DT: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.dt=c.value&7;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.dt=c.value2&7;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
}
break;
}
case DIV_CMD_FM_SSG: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.ssgEnv=8^(c.value2&15);
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.ssgEnv=8^(c.value2&15);
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
}
break;
}
case DIV_CMD_FM_HARD_RESET:
if (c.chan>=6) break;
chan[c.chan].hardReset=c.value;
break;
case DIV_ALWAYS_SET_VOLUME:
return 0;
break;
case DIV_CMD_GET_VOLMAX:
return 127;
break;
case DIV_CMD_PRE_PORTA:
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_PRE_NOTE:
break;
default:
//printf("WARNING: unimplemented command %d\n",c.cmd);
break;
}
return 1;
}
void DivPlatformGenesis::forceIns() {
for (int i=0; i<6; i++) {
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
DivInstrumentFM::Operator& op=chan[i].state.op[j];
if (isMuted[i]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (KVS(i,j)) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(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));
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
}
rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
rWrite(chanOffs[i]+ADDR_LRAF,(IS_REALLY_MUTED(i)?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
if (chan[i].active) {
chan[i].keyOn=true;
chan[i].freqChanged=true;
}
}
if (chan[5].dacMode) {
rWrite(0x2b,0x80);
}
immWrite(0x22,lfoValue);
}
void DivPlatformGenesis::toggleRegisterDump(bool enable) {
DivDispatch::toggleRegisterDump(enable);
}
void* DivPlatformGenesis::getChanState(int ch) {
return &chan[ch];
}
DivMacroInt* DivPlatformGenesis::getChanMacroInt(int ch) {
return &chan[ch].std;
}
DivDispatchOscBuffer* DivPlatformGenesis::getOscBuffer(int ch) {
return oscBuf[ch];
}
unsigned char* DivPlatformGenesis::getRegisterPool() {
return regPool;
}
int DivPlatformGenesis::getRegisterPoolSize() {
return 512;
}
void DivPlatformGenesis::reset() {
while (!writes.empty()) writes.pop_front();
memset(regPool,0,512);
if (useYMFM) {
fm_ymfm->reset();
}
OPN2_Reset(&fm);
OPN2_SetChipType(ladder?ym3438_mode_ym2612:0);
if (dumpWrites) {
addWrite(0xffffffff,0);
}
for (int i=0; i<10; i++) {
chan[i]=DivPlatformGenesis::Channel();
chan[i].std.setEngine(parent);
chan[i].vol=0x7f;
chan[i].outVol=0x7f;
}
for (int i=0; i<512; i++) {
oldWrites[i]=-1;
pendingWrites[i]=-1;
}
lastBusy=60;
lfoValue=8;
softPCMTimer=0;
extMode=false;
if (softPCM) {
chan[5].dacMode=true;
chan[6].dacMode=true;
}
// normal sample direction
if (dumpWrites) addWrite(0xffff0003,0);
// LFO
immWrite(0x22,lfoValue);
delay=0;
}
bool DivPlatformGenesis::isStereo() {
return true;
}
bool DivPlatformGenesis::keyOffAffectsArp(int ch) {
return (ch>5);
}
bool DivPlatformGenesis::keyOffAffectsPorta(int ch) {
return (ch>5);
}
void DivPlatformGenesis::notifyInsChange(int ins) {
for (int i=0; i<10; i++) {
if (chan[i].ins==ins) {
chan[i].insChanged=true;
}
}
}
void DivPlatformGenesis::notifyInsDeletion(void* ins) {
}
void DivPlatformGenesis::poke(unsigned int addr, unsigned short val) {
immWrite(addr,val);
}
void DivPlatformGenesis::poke(std::vector<DivRegWrite>& wlist) {
for (DivRegWrite& i: wlist) immWrite(i.addr,i.val);
}
int DivPlatformGenesis::getPortaFloor(int ch) {
return (ch>5)?12:0;
}
void DivPlatformGenesis::setYMFM(bool use) {
useYMFM=use;
}
void DivPlatformGenesis::setSoftPCM(bool value) {
softPCM=value;
}
void DivPlatformGenesis::setFlags(const DivConfig& flags) {
switch (flags.getInt("clockSel",0)) {
case 1:
chipClock=COLOR_PAL*12.0/7.0;
break;
case 2:
chipClock=8000000.0;
break;
case 3:
chipClock=COLOR_NTSC*12.0/7.0;
break;
case 4:
chipClock=COLOR_NTSC*9.0/4.0;
break;
default:
chipClock=COLOR_NTSC*15.0/7.0;
break;
}
ladder=flags.getBool("ladderEffect",false);
OPN2_SetChipType(ladder?ym3438_mode_ym2612:0);
if (useYMFM) {
if (fm_ymfm!=NULL) delete fm_ymfm;
if (ladder) {
fm_ymfm=new ymfm::ym2612(iface);
} else {
fm_ymfm=new ymfm::ym3438(iface);
}
rate=chipClock/144;
} else {
rate=chipClock/36;
}
for (int i=0; i<10; i++) {
oscBuf[i]->rate=rate;
}
}
int DivPlatformGenesis::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
parent=p;
dumpWrites=false;
ladder=false;
skipRegisterWrites=false;
for (int i=0; i<10; i++) {
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
fm_ymfm=NULL;
setFlags(flags);
for (int i=0; i<128; i++) {
dacVolTable[127-i]=128*pow(10.0f,(float)(-i)*0.75f/20.0f);
}
dacVolTable[0]=0;
reset();
return 10;
}
void DivPlatformGenesis::quit() {
for (int i=0; i<10; i++) {
delete oscBuf[i];
}
if (fm_ymfm!=NULL) delete fm_ymfm;
}
DivPlatformGenesis::~DivPlatformGenesis() {
}
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