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furnace/src/engine/platform/ay.cpp

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/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2023 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 "ay.h"
#include "../engine.h"
#include "../../ta-log.h"
#include "sound/ay8910.h"
#include <string.h>
#include <math.h>
#define rWrite(a,v) if (!skipRegisterWrites) {pendingWrites[a]=v;}
#define immWrite(a,v) if (!skipRegisterWrites) {writes.push(QueuedWrite(regRemap(a),v)); if (dumpWrites) {addWrite(regRemap(a),v);} }
#define CHIP_DIVIDER (extMode?extDiv:((sunsoft||clockSel)?16:8))
const char* regCheatSheetAY[]={
"FreqL_A", "0",
"FreqH_A", "1",
"FreqL_B", "2",
"FreqH_B", "3",
"FreqL_C", "4",
"FreqH_C", "5",
"FreqNoise", "6",
"Enable", "7",
"Volume_A", "8",
"Volume_B", "9",
"Volume_C", "A",
"FreqL_Env", "B",
"FreqH_Env", "C",
"Control_Env", "D",
"PortA", "E",
"PortB", "F",
NULL
};
const char* regCheatSheetAY8914[]={
"FreqL_A", "0",
"FreqL_B", "1",
"FreqL_C", "2",
"FreqL_Env", "3",
"FreqH_A", "4",
"FreqH_B", "5",
"FreqH_C", "6",
"FreqH_Env", "7",
"Enable", "8",
"FreqNoise", "9",
"Control_Env", "A",
"Volume_A", "B",
"Volume_B", "C",
"Volume_C", "D",
"PortA", "E",
"PortB", "F",
NULL
};
// taken from ay8910.cpp
const int sunsoftVolTable[32]={
103350, 73770, 52657, 37586, 32125, 27458, 24269, 21451,
18447, 15864, 14009, 12371, 10506, 8922, 7787, 6796,
5689, 4763, 4095, 3521, 2909, 2403, 2043, 1737,
1397, 1123, 925, 762, 578, 438, 332, 251
};
const char** DivPlatformAY8910::getRegisterSheet() {
return intellivision?regCheatSheetAY8914:regCheatSheetAY;
}
/* C program to generate this table:
#include <stdio.h>
#include <math.h>
int main(int argc, char** argv) {
for (int i=0; i<256; i++) {
if ((i&15)==0) printf("\n ");
printf(" %d,",(int)round(pow((double)i/255.0,0.36)*15.0));
}
}
*/
const unsigned char dacLogTableAY[256]={
0, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5,
6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11,
11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15
};
void DivPlatformAY8910::runDAC() {
for (int i=0; i<3; i++) {
if (chan[i].active && chan[i].curPSGMode.dac && chan[i].dac.sample!=-1) {
chan[i].dac.period+=chan[i].dac.rate;
bool end=false;
bool changed=false;
int prevOut=chan[i].dac.out;
while (chan[i].dac.period>dacRate && !end) {
DivSample* s=parent->getSample(chan[i].dac.sample);
if (s->samples<=0) {
chan[i].dac.sample=-1;
immWrite(0x08+i,0);
end=true;
break;
}
unsigned char dacData=dacLogTableAY[(unsigned char)s->data8[chan[i].dac.pos]^0x80];
chan[i].dac.out=(chan[i].active && !isMuted[i])?MAX(0,dacData-(15-chan[i].outVol)):0;
if (prevOut!=chan[i].dac.out) {
prevOut=chan[i].dac.out;
changed=true;
}
chan[i].dac.pos++;
if (s->isLoopable() && chan[i].dac.pos>=s->loopEnd) {
chan[i].dac.pos=s->loopStart;
} else if (chan[i].dac.pos>=(int)s->samples) {
chan[i].dac.sample=-1;
//immWrite(0x08+i,0);
end=true;
break;
}
chan[i].dac.period-=dacRate;
}
if (changed && !end) {
if (!isMuted[i]) {
immWrite(0x08+i,chan[i].dac.out);
}
}
}
}
}
void DivPlatformAY8910::checkWrites() {
while (!writes.empty()) {
QueuedWrite w=writes.front();
if (intellivision) {
ay8914_device* ay8914=(ay8914_device*)ay;
ay8914->write(w.addr,w.val);
} else {
ay->address_w(w.addr);
ay->data_w(w.val);
}
regPool[w.addr&0x0f]=w.val;
writes.pop();
}
}
void DivPlatformAY8910::acquire(short** buf, size_t len) {
if (ayBufLen<len) {
ayBufLen=len;
for (int i=0; i<3; i++) {
delete[] ayBuf[i];
ayBuf[i]=new short[ayBufLen];
}
}
if (sunsoft) {
for (size_t i=0; i<len; i++) {
runDAC();
checkWrites();
ay->sound_stream_update(ayBuf,1);
buf[0][i]=ayBuf[0][0];
buf[1][i]=buf[0][i];
oscBuf[0]->data[oscBuf[0]->needle++]=CLAMP(sunsoftVolTable[31-(ay->lastIndx&31)]<<3,-32768,32767);
oscBuf[1]->data[oscBuf[1]->needle++]=CLAMP(sunsoftVolTable[31-((ay->lastIndx>>5)&31)]<<3,-32768,32767);
oscBuf[2]->data[oscBuf[2]->needle++]=CLAMP(sunsoftVolTable[31-((ay->lastIndx>>10)&31)]<<3,-32768,32767);
}
} else {
for (size_t i=0; i<len; i++) {
runDAC();
checkWrites();
ay->sound_stream_update(ayBuf,1);
if (stereo) {
buf[0][i]=ayBuf[0][0]+ayBuf[1][0]+((ayBuf[2][0]*stereoSep)>>8);
buf[1][i]=((ayBuf[0][0]*stereoSep)>>8)+ayBuf[1][0]+ayBuf[2][0];
} else {
buf[0][i]=ayBuf[0][0]+ayBuf[1][0]+ayBuf[2][0];
buf[1][i]=buf[0][i];
}
oscBuf[0]->data[oscBuf[0]->needle++]=ayBuf[0][0]<<2;
oscBuf[1]->data[oscBuf[1]->needle++]=ayBuf[1][0]<<2;
oscBuf[2]->data[oscBuf[2]->needle++]=ayBuf[2][0]<<2;
}
}
}
void DivPlatformAY8910::updateOutSel(bool immediate) {
if (immediate) {
immWrite(0x07,
~((chan[0].curPSGMode.getTone())|
((chan[1].curPSGMode.getTone())<<1)|
((chan[2].curPSGMode.getTone())<<2)|
((chan[0].curPSGMode.getNoise())<<2)|
((chan[1].curPSGMode.getNoise())<<3)|
((chan[2].curPSGMode.getNoise())<<4)|
((!ioPortA)<<6)|
((!ioPortB)<<7)));
} else {
rWrite(0x07,
~((chan[0].curPSGMode.getTone())|
((chan[1].curPSGMode.getTone())<<1)|
((chan[2].curPSGMode.getTone())<<2)|
((chan[0].curPSGMode.getNoise())<<2)|
((chan[1].curPSGMode.getNoise())<<3)|
((chan[2].curPSGMode.getNoise())<<4)|
((!ioPortA)<<6)|
((!ioPortB)<<7)));
}
}
void DivPlatformAY8910::tick(bool sysTick) {
// PSG
for (int i=0; i<3; i++) {
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=MIN(15,chan[i].std.vol.val)-(15-(chan[i].vol&15));
if (chan[i].outVol<0) chan[i].outVol=0;
if (!chan[i].nextPSGMode.dac) {
if (isMuted[i]) {
rWrite(0x08+i,0);
} else if (intellivision && (chan[i].nextPSGMode.getEnvelope())) {
rWrite(0x08+i,(chan[i].outVol&0xc)<<2);
} else {
rWrite(0x08+i,(chan[i].outVol&15)|((chan[i].nextPSGMode.getEnvelope())<<2));
}
}
}
if (NEW_ARP_STRAT) {
chan[i].handleArp();
} else if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
chan[i].baseFreq=NOTE_PERIODIC(parent->calcArp(chan[i].note,chan[i].std.arp.val));
}
chan[i].freqChanged=true;
}
if (chan[i].std.duty.had) {
rWrite(0x06,31-chan[i].std.duty.val);
}
if (chan[i].std.wave.had) {
if (!chan[i].nextPSGMode.dac) {
chan[i].nextPSGMode.val=(chan[i].std.wave.val+1)&7;
if (chan[i].active) {
chan[i].curPSGMode.val=chan[i].nextPSGMode.val;
}
if (isMuted[i]) {
rWrite(0x08+i,0);
} else if (intellivision && (chan[i].nextPSGMode.getEnvelope())) {
rWrite(0x08+i,(chan[i].outVol&0xc)<<2);
} else {
rWrite(0x08+i,(chan[i].outVol&15)|((chan[i].nextPSGMode.getEnvelope())<<2));
}
}
}
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 (chan[i].std.phaseReset.had) {
if (chan[i].std.phaseReset.val==1) {
if (chan[i].nextPSGMode.dac) {
if (dumpWrites) addWrite(0xffff0002+(i<<8),0);
if (chan[i].dac.sample<0 || chan[i].dac.sample>=parent->song.sampleLen) {
if (dumpWrites) {
rWrite(0x08+i,0);
addWrite(0xffff0000+(i<<8),chan[i].dac.sample);
}
chan[i].dac.pos=0;
chan[i].dac.period=0;
chan[i].keyOn=true;
}
}
oldWrites[0x08+i]=-1;
oldWrites[0x0d]=-1;
}
}
if (chan[i].std.ex2.had) {
ayEnvMode=chan[i].std.ex2.val;
rWrite(0x0d,ayEnvMode);
}
if (chan[i].std.ex3.had) {
chan[i].autoEnvNum=chan[i].std.ex3.val;
chan[i].freqChanged=true;
if (!chan[i].std.alg.will) chan[i].autoEnvDen=1;
}
if (chan[i].std.alg.had) {
chan[i].autoEnvDen=chan[i].std.alg.val;
chan[i].freqChanged=true;
if (!chan[i].std.ex3.will) chan[i].autoEnvNum=1;
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,true,0,chan[i].pitch2,chipClock,CHIP_DIVIDER);
if (chan[i].dac.furnaceDAC) {
double off=1.0;
if (chan[i].dac.sample>=0 && chan[i].dac.sample<parent->song.sampleLen) {
DivSample* s=parent->getSample(chan[i].dac.sample);
if (s->centerRate<1) {
off=1.0;
} else {
off=8363.0/(double)s->centerRate;
}
}
chan[i].dac.rate=((double)rate*((sunsoft||clockSel)?8.0:16.0))/(double)(MAX(1,off*chan[i].freq));
if (dumpWrites) addWrite(0xffff0001+(i<<8),chan[i].dac.rate);
}
if (chan[i].freq<0) chan[i].freq=0;
if (chan[i].freq>4095) chan[i].freq=4095;
if (chan[i].keyOn) {
//rWrite(16+i*5+1,((chan[i].duty&3)<<6)|(63-(ins->gb.soundLen&63)));
//rWrite(16+i*5+2,((chan[i].vol<<4))|(ins->gb.envLen&7)|((ins->gb.envDir&1)<<3));
if (!chan[i].nextPSGMode.dac) {
chan[i].curPSGMode.val=chan[i].nextPSGMode.val;
}
}
if (chan[i].keyOff) {
chan[i].curPSGMode.val=0;
rWrite(0x08+i,0);
}
rWrite((i)<<1,chan[i].freq&0xff);
rWrite(1+((i)<<1),chan[i].freq>>8);
if (chan[i].keyOn) chan[i].keyOn=false;
if (chan[i].keyOff) chan[i].keyOff=false;
if (chan[i].freqChanged && chan[i].autoEnvNum>0 && chan[i].autoEnvDen>0) {
ayEnvPeriod=(chan[i].freq*chan[i].autoEnvDen/chan[i].autoEnvNum)>>4;
immWrite(0x0b,ayEnvPeriod);
immWrite(0x0c,ayEnvPeriod>>8);
}
chan[i].freqChanged=false;
}
}
updateOutSel();
if (ayEnvSlide!=0) {
ayEnvSlideLow+=ayEnvSlide;
while (ayEnvSlideLow>7) {
ayEnvSlideLow-=8;
if (ayEnvPeriod<0xffff) {
ayEnvPeriod++;
immWrite(0x0b,ayEnvPeriod);
immWrite(0x0c,ayEnvPeriod>>8);
}
}
while (ayEnvSlideLow<-7) {
ayEnvSlideLow+=8;
if (ayEnvPeriod>0) {
ayEnvPeriod--;
immWrite(0x0b,ayEnvPeriod);
immWrite(0x0c,ayEnvPeriod>>8);
}
}
}
for (int i=0; i<16; i++) {
if (pendingWrites[i]!=oldWrites[i]) {
immWrite(i,pendingWrites[i]&0xff);
oldWrites[i]=pendingWrites[i];
}
}
}
int DivPlatformAY8910::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_AY);
if (!parent->song.disableSampleMacro && (ins->type==DIV_INS_AMIGA || ins->amiga.useSample)) {
chan[c.chan].nextPSGMode.dac=true;
} else if (chan[c.chan].dac.furnaceDAC) {
chan[c.chan].nextPSGMode.dac=false;
}
if (chan[c.chan].nextPSGMode.dac) {
if (skipRegisterWrites) break;
if (!parent->song.disableSampleMacro && (ins->type==DIV_INS_AMIGA || ins->amiga.useSample)) {
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].dac.sample=ins->amiga.getSample(c.value);
c.value=ins->amiga.getFreq(c.value);
}
if (chan[c.chan].dac.sample<0 || chan[c.chan].dac.sample>=parent->song.sampleLen) {
chan[c.chan].dac.sample=-1;
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
break;
} else {
if (dumpWrites) {
rWrite(0x08+c.chan,0);
addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dac.sample);
}
}
chan[c.chan].dac.pos=0;
chan[c.chan].dac.period=0;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
chan[c.chan].active=true;
chan[c.chan].macroInit(ins);
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
//chan[c.chan].keyOn=true;
chan[c.chan].dac.furnaceDAC=true;
} else {
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
}
chan[c.chan].dac.sample=12*sampleBank+chan[c.chan].note%12;
if (chan[c.chan].dac.sample>=parent->song.sampleLen) {
chan[c.chan].dac.sample=-1;
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
break;
} else {
if (dumpWrites) addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dac.sample);
}
chan[c.chan].dac.pos=0;
chan[c.chan].dac.period=0;
chan[c.chan].dac.rate=parent->getSample(chan[c.chan].dac.sample)->rate*2048;
if (dumpWrites) {
rWrite(0x08+c.chan,0);
addWrite(0xffff0001+(c.chan<<8),chan[c.chan].dac.rate);
}
chan[c.chan].dac.furnaceDAC=false;
}
chan[c.chan].curPSGMode.dac=chan[c.chan].nextPSGMode.dac;
break;
}
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
chan[c.chan].active=true;
chan[c.chan].keyOn=true;
chan[c.chan].macroInit(ins);
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
if (!chan[c.chan].nextPSGMode.dac) {
if (isMuted[c.chan]) {
rWrite(0x08+c.chan,0);
} else if (intellivision && (chan[c.chan].nextPSGMode.getEnvelope())) {
rWrite(0x08+c.chan,(chan[c.chan].vol&0xc)<<2);
} else {
rWrite(0x08+c.chan,(chan[c.chan].vol&15)|((chan[c.chan].nextPSGMode.getEnvelope())<<2));
}
}
break;
}
case DIV_CMD_NOTE_OFF:
chan[c.chan].dac.sample=-1;
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
chan[c.chan].nextPSGMode.dac=false;
chan[c.chan].keyOff=true;
chan[c.chan].active=false;
chan[c.chan].macroInit(NULL);
break;
case DIV_CMD_NOTE_OFF_ENV:
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 (!chan[c.chan].nextPSGMode.dac) {
if (isMuted[c.chan]) {
rWrite(0x08+c.chan,0);
} else {
if (chan[c.chan].active) {
if (intellivision && (chan[c.chan].nextPSGMode.getEnvelope())) {
rWrite(0x08+c.chan,(chan[c.chan].vol&0xc)<<2);
} else {
rWrite(0x08+c.chan,(chan[c.chan].vol&15)|((chan[c.chan].nextPSGMode.getEnvelope())<<2));
}
}
}
}
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_PITCH: {
chan[c.chan].pitch=c.value;
chan[c.chan].freqChanged=true;
break;
}
case DIV_CMD_NOTE_PORTA: {
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;
}
case DIV_CMD_LEGATO: {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
break;
}
case DIV_CMD_STD_NOISE_MODE:
if (!chan[c.chan].nextPSGMode.dac) {
if (c.value<16) {
chan[c.chan].nextPSGMode.val=(c.value+1)&7;
if (chan[c.chan].active) {
chan[c.chan].curPSGMode.val=chan[c.chan].nextPSGMode.val;
}
if (isMuted[c.chan]) {
rWrite(0x08+c.chan,0);
} else if (chan[c.chan].active) {
if (intellivision && (chan[c.chan].nextPSGMode.getEnvelope())) {
rWrite(0x08+c.chan,(chan[c.chan].outVol&0xc)<<2);
} else {
rWrite(0x08+c.chan,(chan[c.chan].outVol&15)|((chan[c.chan].nextPSGMode.getEnvelope())<<2));
}
}
}
}
break;
case DIV_CMD_STD_NOISE_FREQ:
rWrite(0x06,31-c.value);
break;
case DIV_CMD_AY_ENVELOPE_SET:
ayEnvMode=c.value>>4;
rWrite(0x0d,ayEnvMode);
if (c.value&15) {
chan[c.chan].nextPSGMode.envelope|=1;
} else {
chan[c.chan].nextPSGMode.envelope&=~1;
}
if (!chan[c.chan].nextPSGMode.dac && chan[c.chan].active) {
chan[c.chan].curPSGMode.val=chan[c.chan].nextPSGMode.val;
}
if (isMuted[c.chan]) {
rWrite(0x08+c.chan,0);
} else if (intellivision && (chan[c.chan].nextPSGMode.getEnvelope())) {
rWrite(0x08+c.chan,(chan[c.chan].vol&0xc)<<2);
} else {
rWrite(0x08+c.chan,(chan[c.chan].vol&15)|((chan[c.chan].nextPSGMode.getEnvelope())<<2));
}
break;
case DIV_CMD_AY_ENVELOPE_LOW:
ayEnvPeriod&=0xff00;
ayEnvPeriod|=c.value;
immWrite(0x0b,ayEnvPeriod);
immWrite(0x0c,ayEnvPeriod>>8);
break;
case DIV_CMD_AY_ENVELOPE_HIGH:
ayEnvPeriod&=0xff;
ayEnvPeriod|=c.value<<8;
immWrite(0x0b,ayEnvPeriod);
immWrite(0x0c,ayEnvPeriod>>8);
break;
case DIV_CMD_AY_ENVELOPE_SLIDE:
ayEnvSlide=c.value;
break;
case DIV_CMD_AY_AUTO_ENVELOPE:
chan[c.chan].autoEnvNum=c.value>>4;
chan[c.chan].autoEnvDen=c.value&15;
chan[c.chan].freqChanged=true;
break;
case DIV_CMD_AY_IO_WRITE:
if (c.value==255) break;
if (c.value) { // port B
ioPortB=true;
portBVal=c.value2;
logI("AY I/O port B write: %x",portBVal);
} else { // port A
ioPortA=true;
portAVal=c.value2;
logI("AY I/O port A write: %x",portAVal);
}
updateOutSel(true);
immWrite(14+(c.value?1:0),(c.value?portBVal:portAVal));
break;
case DIV_CMD_SAMPLE_MODE:
chan[c.chan].nextPSGMode.dac=(c.value>0)?1:0;
if (chan[c.chan].active) {
chan[c.chan].curPSGMode.dac=chan[c.chan].nextPSGMode.dac;
}
break;
case DIV_CMD_SAMPLE_BANK:
sampleBank=c.value;
if (sampleBank>(parent->song.sample.size()/12)) {
sampleBank=parent->song.sample.size()/12;
}
break;
case DIV_CMD_MACRO_OFF:
chan[c.chan].std.mask(c.value,true);
break;
case DIV_CMD_MACRO_ON:
chan[c.chan].std.mask(c.value,false);
break;
case DIV_ALWAYS_SET_VOLUME:
return 0;
break;
case DIV_CMD_GET_VOLMAX:
return 15;
break;
case DIV_CMD_PRE_PORTA:
// TODO: FIX wtr_envelope.dmf
// the brokenPortaArp update broke it
if (chan[c.chan].active && c.value2) {
if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AY));
}
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
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 DivPlatformAY8910::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
if (isMuted[ch]) {
rWrite(0x08+ch,0);
} else if (chan[ch].active && chan[ch].nextPSGMode.dac) {
rWrite(0x08+ch,chan[ch].dac.out);
} else {
if (intellivision && (chan[ch].nextPSGMode.getEnvelope()) && chan[ch].active) {
rWrite(0x08+ch,(chan[ch].vol&0xc)<<2);
} else if (chan[ch].active) {
rWrite(0x08+ch,(chan[ch].outVol&15)|((chan[ch].nextPSGMode.getEnvelope())<<2));
}
}
}
void DivPlatformAY8910::forceIns() {
for (int i=0; i<3; i++) {
chan[i].insChanged=true;
chan[i].freqChanged=true;
}
immWrite(0x0b,ayEnvPeriod);
immWrite(0x0c,ayEnvPeriod>>8);
immWrite(0x0d,ayEnvMode);
}
void* DivPlatformAY8910::getChanState(int ch) {
return &chan[ch];
}
DivMacroInt* DivPlatformAY8910::getChanMacroInt(int ch) {
return &chan[ch].std;
}
DivSamplePos DivPlatformAY8910::getSamplePos(int ch) {
if (ch>=3) return DivSamplePos();
return DivSamplePos(
chan[ch].dac.sample,
chan[ch].dac.pos,
chan[ch].dac.rate
);
}
DivDispatchOscBuffer* DivPlatformAY8910::getOscBuffer(int ch) {
return oscBuf[ch];
}
unsigned char* DivPlatformAY8910::getRegisterPool() {
return regPool;
}
int DivPlatformAY8910::getRegisterPoolSize() {
return 16;
}
void DivPlatformAY8910::flushWrites() {
while (!writes.empty()) writes.pop();
}
bool DivPlatformAY8910::getDCOffRequired() {
return true;
}
void DivPlatformAY8910::reset() {
while (!writes.empty()) writes.pop();
ay->device_reset();
memset(regPool,0,16);
for (int i=0; i<3; i++) {
chan[i]=DivPlatformAY8910::Channel();
chan[i].std.setEngine(parent);
chan[i].vol=0x0f;
}
if (dumpWrites) {
addWrite(0xffffffff,0);
}
for (int i=0; i<16; i++) {
oldWrites[i]=-1;
pendingWrites[i]=-1;
}
sampleBank=0;
ayEnvPeriod=0;
ayEnvMode=0;
ayEnvSlide=0;
ayEnvSlideLow=0;
delay=0;
ioPortA=false;
ioPortB=false;
portAVal=0;
portBVal=0;
}
int DivPlatformAY8910::getOutputCount() {
return 2;
}
bool DivPlatformAY8910::keyOffAffectsArp(int ch) {
return true;
}
void DivPlatformAY8910::notifyInsDeletion(void* ins) {
for (int i=0; i<3; i++) {
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
}
}
void DivPlatformAY8910::poke(unsigned int addr, unsigned short val) {
immWrite(addr,val);
}
void DivPlatformAY8910::poke(std::vector<DivRegWrite>& wlist) {
for (DivRegWrite& i: wlist) immWrite(i.addr,i.val);
}
void DivPlatformAY8910::setExtClockDiv(unsigned int eclk, unsigned char ediv) {
if (extMode) {
extClock=eclk;
extDiv=ediv;
}
}
void DivPlatformAY8910::setFlags(const DivConfig& flags) {
if (extMode) {
chipClock=extClock;
rate=chipClock/extDiv;
clockSel=false;
dacRate=chipClock/dacRateDiv;
} else {
clockSel=flags.getBool("halfClock",false);
switch (flags.getInt("clockSel",0)) {
case 1:
chipClock=COLOR_PAL*2.0/5.0;
break;
case 2:
chipClock=1750000;
break;
case 3:
chipClock=2000000;
break;
case 4:
chipClock=1500000;
break;
case 5:
chipClock=1000000;
break;
case 6:
chipClock=COLOR_NTSC/4.0;
break;
case 7:
chipClock=COLOR_PAL*3.0/8.0;
break;
case 8:
chipClock=COLOR_PAL*3.0/16.0;
break;
case 9:
chipClock=COLOR_PAL/4.0;
break;
case 10:
chipClock=2097152;
break;
case 11:
chipClock=COLOR_NTSC;
break;
case 12:
chipClock=3600000;
break;
case 13:
chipClock=20000000/16;
break;
case 14:
chipClock=1536000;
break;
case 15:
chipClock=38400*13*4; // 31948800/16
break;
default:
chipClock=COLOR_NTSC/2.0;
break;
}
CHECK_CUSTOM_CLOCK;
rate=chipClock/8;
dacRate=rate;
}
for (int i=0; i<3; i++) {
oscBuf[i]->rate=rate;
}
if (ay!=NULL) delete ay;
switch (flags.getInt("chipType",0)) {
case 1:
ay=new ym2149_device(rate,clockSel);
sunsoft=false;
intellivision=false;
break;
case 2:
ay=new sunsoft_5b_sound_device(rate);
sunsoft=true;
intellivision=false;
break;
case 3:
ay=new ay8914_device(rate);
sunsoft=false;
intellivision=true;
break;
default:
ay=new ay8910_device(rate);
sunsoft=false;
intellivision=false;
break;
}
ay->device_start();
ay->device_reset();
stereo=flags.getBool("stereo",false);
stereoSep=flags.getInt("stereoSep",0)&255;
}
int DivPlatformAY8910::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
parent=p;
dumpWrites=false;
skipRegisterWrites=false;
for (int i=0; i<3; i++) {
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
ay=NULL;
setFlags(flags);
ayBufLen=65536;
for (int i=0; i<3; i++) ayBuf[i]=new short[ayBufLen];
reset();
return 3;
}
void DivPlatformAY8910::quit() {
for (int i=0; i<3; i++) {
delete oscBuf[i];
delete[] ayBuf[i];
}
if (ay!=NULL) delete ay;
}
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