Merge pull request #787 from tildearrow/ga20
add (Partial) GA20 support
This commit is contained in:
commit
f5667fac1f
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@ -445,6 +445,8 @@ src/engine/platform/sound/oki/okim6258.cpp
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src/engine/platform/sound/snes/SPC_DSP.cpp
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src/engine/platform/sound/ga20/iremga20.cpp
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src/engine/platform/oplAInterface.cpp
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src/engine/platform/ym2608Interface.cpp
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src/engine/platform/ym2610Interface.cpp
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@ -526,6 +528,7 @@ src/engine/platform/namcowsg.cpp
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src/engine/platform/rf5c68.cpp
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src/engine/platform/snes.cpp
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src/engine/platform/k007232.cpp
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src/engine/platform/ga20.cpp
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src/engine/platform/pcmdac.cpp
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src/engine/platform/dummy.cpp
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)
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@ -72,6 +72,7 @@
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#include "platform/snes.h"
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#include "platform/vb.h"
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#include "platform/k007232.h"
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#include "platform/ga20.h"
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#include "platform/pcmdac.h"
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#include "platform/dummy.h"
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#include "../ta-log.h"
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@ -426,6 +427,9 @@ void DivDispatchContainer::init(DivSystem sys, DivEngine* eng, int chanCount, do
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case DIV_SYSTEM_K007232:
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dispatch=new DivPlatformK007232;
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break;
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case DIV_SYSTEM_GA20:
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dispatch=new DivPlatformGA20;
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break;
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case DIV_SYSTEM_PCM_DAC:
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dispatch=new DivPlatformPCMDAC;
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break;
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@ -0,0 +1,486 @@
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/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2022 tildearrow and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "ga20.h"
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#include "../engine.h"
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#include "../../ta-log.h"
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#include <math.h>
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#define rWrite(a,v) {if(!skipRegisterWrites) {writes.emplace(a,v); if(dumpWrites) addWrite(a,v);}}
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#define CHIP_DIVIDER 64
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const char* regCheatSheetGA20[]={
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// on-chip
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"CHX_StartL", "X*8+0",
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"CHX_StartH", "X*8+1",
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"CHX_EndL", "X*8+2",
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"CHX_EndH", "X*8+3",
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"CHX_Freq", "X*8+4",
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"CHX_Volume", "X*8+5",
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"CHX_Control", "X*8+6",
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"CHX_Status", "X*8+7",
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NULL
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};
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const char** DivPlatformGA20::getRegisterSheet() {
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return regCheatSheetGA20;
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}
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inline void DivPlatformGA20::chWrite(unsigned char ch, unsigned int addr, unsigned char val) {
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if (!skipRegisterWrites) {
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if ((ch<4) && (addr<8)) {
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rWrite((ch<<3)+(addr&7),val);
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}
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}
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}
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void DivPlatformGA20::acquire(short* bufL, short* bufR, size_t start, size_t len) {
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if (ga20BufLen<len) {
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ga20BufLen=len;
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for (int i=0; i<4; i++) {
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delete[] ga20Buf[i];
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ga20Buf[i]=new short[ga20BufLen];
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}
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}
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for (size_t h=start; h<start+len; h++) {
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if ((--delay)<=0) {
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delay=MAX(0,delay);
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if (!writes.empty()) {
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QueuedWrite& w=writes.front();
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ga20.write(w.addr,w.val);
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regPool[w.addr]=w.val;
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writes.pop();
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delay=w.delay;
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}
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}
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short *buffer[4] = {&ga20Buf[0][h],&ga20Buf[1][h],&ga20Buf[2][h],&ga20Buf[3][h]};
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ga20.sound_stream_update(buffer, 1);
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bufL[h]=(signed int)(ga20Buf[0][h]+ga20Buf[1][h]+ga20Buf[2][h]+ga20Buf[3][h])>>2;
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for (int i=0; i<4; i++) {
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oscBuf[i]->data[oscBuf[i]->needle++]=ga20Buf[i][h];
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}
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}
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}
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u8 DivPlatformGA20::read_byte(u32 address) {
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if ((sampleMem!=NULL) && (address<getSampleMemCapacity())) {
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return sampleMem[address&0xfffff];
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}
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return 0;
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}
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void DivPlatformGA20::tick(bool sysTick) {
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for (int i=0; i<4; i++) {
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chan[i].std.next();
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if (chan[i].std.vol.had) {
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const signed char macroVol=VOL_SCALE_LOG((chan[i].vol&0xff),(0xff*MIN(chan[i].macroVolMul,chan[i].std.vol.val))/chan[i].macroVolMul,0xff);
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if ((!isMuted[i]) && (macroVol!=chan[i].outVol)) {
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chan[i].outVol=macroVol;
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chan[i].volumeChanged=true;
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}
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}
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if (chan[i].std.arp.had) {
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if (!chan[i].inPorta) {
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chan[i].baseFreq=NOTE_PERIODIC(parent->calcArp(chan[i].note,chan[i].std.arp.val));
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}
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chan[i].freqChanged=true;
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}
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if (chan[i].std.pitch.had) {
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if (chan[i].std.pitch.mode) {
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chan[i].pitch2+=chan[i].std.pitch.val;
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CLAMP_VAR(chan[i].pitch2,-32768,32767);
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} else {
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chan[i].pitch2=chan[i].std.pitch.val;
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}
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chan[i].freqChanged=true;
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}
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if (chan[i].std.phaseReset.had) {
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if (chan[i].std.phaseReset.val==1 && chan[i].active) {
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chan[i].audPos=0;
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chan[i].setPos=true;
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}
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}
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if (chan[i].volumeChanged) {
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chan[i].resVol=(chan[i].active && isMuted[i])?0:chan[i].outVol&0xff;
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chWrite(i,0x5,chan[i].resVol);
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chan[i].volumeChanged=false;
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}
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if (chan[i].setPos) {
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// force keyon
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chan[i].keyOn=true;
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chan[i].setPos=false;
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} else {
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chan[i].audPos=0;
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}
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if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
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double off=1.0;
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int sample=chan[i].sample;
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if (sample>=0 && sample<parent->song.sampleLen) {
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DivSample* s=parent->getSample(sample);
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if (s->centerRate<1) {
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off=1.0;
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} else {
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off=8363.0/s->centerRate;
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}
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}
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DivSample* s=parent->getSample(chan[i].sample);
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chan[i].freq=0x100-(int)(off*parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true,0,chan[i].pitch2,chipClock,CHIP_DIVIDER));
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if (chan[i].freq>255) chan[i].freq=255;
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if (chan[i].freq<0) chan[i].freq=0;
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if (chan[i].keyOn) {
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unsigned int start=0;
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unsigned int end=0;
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if (chan[i].sample>=0 && chan[i].sample<parent->song.sampleLen) {
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start=sampleOffGA20[chan[i].sample]&0xfffff;
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end=start+s->length8;
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}
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if (chan[i].audPos>0) {
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start=start+MIN(chan[i].audPos,MIN(getSampleMemCapacity()-1,s->length8));
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}
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start=MIN(start,getSampleMemCapacity()-1);
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end=MIN(end,getSampleMemCapacity()-1);
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// force keyoff first
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chWrite(i,5,0);
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chWrite(i,6,0);
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// keyon
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if (chan[i].prevFreq!=chan[i].freq) {
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chWrite(i,4,chan[i].freq&0xff);
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chan[i].prevFreq=chan[i].freq;
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}
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chWrite(i,0,start>>4);
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chWrite(i,1,start>>12);
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chWrite(i,2,end>>4);
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chWrite(i,3,end>>12);
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chWrite(i,5,chan[i].resVol);
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chWrite(i,6,2);
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if (!chan[i].std.vol.had) {
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chan[i].outVol=chan[i].vol;
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if (!isMuted[i]) {
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chan[i].volumeChanged=true;
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}
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}
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chan[i].keyOn=false;
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}
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if (chan[i].keyOff) {
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chWrite(i,5,0);
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chWrite(i,6,0);
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chan[i].keyOff=false;
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}
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if (chan[i].freqChanged) {
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if (chan[i].prevFreq!=chan[i].freq) {
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chWrite(i,4,chan[i].freq&0xff);
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chan[i].prevFreq=chan[i].freq;
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}
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chan[i].freqChanged=false;
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}
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}
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}
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}
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int DivPlatformGA20::dispatch(DivCommand c) {
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switch (c.cmd) {
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case DIV_CMD_NOTE_ON: {
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DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA);
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chan[c.chan].macroVolMul=ins->type==DIV_INS_AMIGA?64:255;
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chan[c.chan].sample=ins->amiga.getSample(c.value);
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
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}
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if (chan[c.chan].sample<0 || chan[c.chan].sample>=parent->song.sampleLen) {
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chan[c.chan].sample=-1;
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}
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].freqChanged=true;
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chan[c.chan].note=c.value;
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}
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chan[c.chan].active=true;
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chan[c.chan].keyOn=true;
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chan[c.chan].macroInit(ins);
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if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
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chan[c.chan].outVol=chan[c.chan].vol;
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if (!isMuted[c.chan]) {
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chan[c.chan].volumeChanged=true;
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}
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}
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break;
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}
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case DIV_CMD_NOTE_OFF:
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chan[c.chan].sample=-1;
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chan[c.chan].active=false;
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chan[c.chan].keyOff=true;
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chan[c.chan].macroInit(NULL);
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break;
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case DIV_CMD_NOTE_OFF_ENV:
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case DIV_CMD_ENV_RELEASE:
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chan[c.chan].std.release();
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break;
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case DIV_CMD_INSTRUMENT:
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if (chan[c.chan].ins!=c.value || c.value2==1) {
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chan[c.chan].ins=c.value;
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}
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break;
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case DIV_CMD_VOLUME:
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if (chan[c.chan].vol!=c.value) {
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chan[c.chan].vol=c.value;
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if (!chan[c.chan].std.vol.has) {
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chan[c.chan].outVol=c.value;
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if (!isMuted[c.chan]) {
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chan[c.chan].volumeChanged=true;
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}
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}
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}
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break;
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case DIV_CMD_GET_VOLUME:
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if (chan[c.chan].std.vol.has) {
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return chan[c.chan].vol;
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}
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return chan[c.chan].outVol;
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break;
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case DIV_CMD_PITCH:
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chan[c.chan].pitch=c.value;
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chan[c.chan].freqChanged=true;
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break;
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case DIV_CMD_NOTE_PORTA: {
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const int destFreq=NOTE_PERIODIC(c.value2);
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bool return2=false;
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if (destFreq>chan[c.chan].baseFreq) {
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chan[c.chan].baseFreq+=c.value;
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if (chan[c.chan].baseFreq>=destFreq) {
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chan[c.chan].baseFreq=destFreq;
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return2=true;
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}
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} else {
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chan[c.chan].baseFreq-=c.value;
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if (chan[c.chan].baseFreq<=destFreq) {
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chan[c.chan].baseFreq=destFreq;
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return2=true;
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}
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}
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chan[c.chan].freqChanged=true;
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if (return2) {
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chan[c.chan].inPorta=false;
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return 2;
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}
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break;
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}
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case DIV_CMD_LEGATO: {
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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-12):(0)));
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chan[c.chan].freqChanged=true;
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chan[c.chan].note=c.value;
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break;
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}
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case DIV_CMD_PRE_PORTA:
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if (chan[c.chan].active && c.value2) {
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if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
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}
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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);
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chan[c.chan].inPorta=c.value;
|
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break;
|
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case DIV_CMD_SAMPLE_POS:
|
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chan[c.chan].audPos=c.value;
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chan[c.chan].setPos=true;
|
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break;
|
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case DIV_CMD_GET_VOLMAX:
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return 255;
|
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break;
|
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case DIV_ALWAYS_SET_VOLUME:
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return 1;
|
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break;
|
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default:
|
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break;
|
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}
|
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return 1;
|
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}
|
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|
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void DivPlatformGA20::muteChannel(int ch, bool mute) {
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isMuted[ch]=mute;
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chan[ch].volumeChanged=true;
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}
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|
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void DivPlatformGA20::forceIns() {
|
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while (!writes.empty()) writes.pop();
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for (int i=0; i<4; i++) {
|
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chan[i].insChanged=true;
|
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chan[i].volumeChanged=true;
|
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chan[i].freqChanged=true;
|
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chan[i].prevFreq=-1;
|
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}
|
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}
|
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|
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void* DivPlatformGA20::getChanState(int ch) {
|
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return &chan[ch];
|
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}
|
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|
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DivMacroInt* DivPlatformGA20::getChanMacroInt(int ch) {
|
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return &chan[ch].std;
|
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}
|
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|
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DivDispatchOscBuffer* DivPlatformGA20::getOscBuffer(int ch) {
|
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return oscBuf[ch];
|
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}
|
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|
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void DivPlatformGA20::reset() {
|
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while (!writes.empty()) {
|
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writes.pop();
|
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}
|
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memset(regPool,0,32);
|
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ga20.device_reset();
|
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delay=0;
|
||||
for (int i=0; i<4; i++) {
|
||||
chan[i]=DivPlatformGA20::Channel();
|
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chan[i].std.setEngine(parent);
|
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// keyoff all channels
|
||||
chWrite(i,5,0);
|
||||
chWrite(i,6,0);
|
||||
}
|
||||
}
|
||||
|
||||
bool DivPlatformGA20::isStereo() {
|
||||
return false;
|
||||
}
|
||||
|
||||
void DivPlatformGA20::notifyInsChange(int ins) {
|
||||
for (int i=0; i<4; i++) {
|
||||
if (chan[i].ins==ins) {
|
||||
chan[i].insChanged=true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void DivPlatformGA20::notifyWaveChange(int wave) {
|
||||
// TODO when wavetables are added
|
||||
// TODO they probably won't be added unless the samples reside in RAM
|
||||
}
|
||||
|
||||
void DivPlatformGA20::notifyInsDeletion(void* ins) {
|
||||
for (int i=0; i<4; i++) {
|
||||
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
|
||||
}
|
||||
}
|
||||
|
||||
void DivPlatformGA20::setFlags(const DivConfig& flags) {
|
||||
chipClock=COLOR_NTSC;
|
||||
CHECK_CUSTOM_CLOCK;
|
||||
rate=chipClock/4;
|
||||
for (int i=0; i<4; i++) {
|
||||
oscBuf[i]->rate=rate;
|
||||
}
|
||||
}
|
||||
|
||||
void DivPlatformGA20::poke(unsigned int addr, unsigned short val) {
|
||||
rWrite(addr&0x1f,val);
|
||||
}
|
||||
|
||||
void DivPlatformGA20::poke(std::vector<DivRegWrite>& wlist) {
|
||||
for (DivRegWrite& i: wlist) rWrite(i.addr&0x1f,i.val);
|
||||
}
|
||||
|
||||
unsigned char* DivPlatformGA20::getRegisterPool() {
|
||||
return regPool;
|
||||
}
|
||||
|
||||
int DivPlatformGA20::getRegisterPoolSize() {
|
||||
return 32;
|
||||
}
|
||||
|
||||
const void* DivPlatformGA20::getSampleMem(int index) {
|
||||
return index == 0 ? sampleMem : NULL;
|
||||
}
|
||||
|
||||
size_t DivPlatformGA20::getSampleMemCapacity(int index) {
|
||||
return index == 0 ? 1048576 : 0;
|
||||
}
|
||||
|
||||
size_t DivPlatformGA20::getSampleMemUsage(int index) {
|
||||
return index == 0 ? sampleMemLen : 0;
|
||||
}
|
||||
|
||||
bool DivPlatformGA20::isSampleLoaded(int index, int sample) {
|
||||
if (index!=0) return false;
|
||||
if (sample<0 || sample>255) return false;
|
||||
return sampleLoaded[sample];
|
||||
}
|
||||
|
||||
void DivPlatformGA20::renderSamples(int sysID) {
|
||||
memset(sampleMem,0x00,getSampleMemCapacity());
|
||||
memset(sampleOffGA20,0,256*sizeof(unsigned int));
|
||||
memset(sampleLoaded,0,256*sizeof(bool));
|
||||
|
||||
size_t memPos=0;
|
||||
for (int i=0; i<parent->song.sampleLen; i++) {
|
||||
DivSample* s=parent->song.sample[i];
|
||||
if (!s->renderOn[0][sysID]) {
|
||||
sampleOffGA20[i]=0;
|
||||
continue;
|
||||
}
|
||||
|
||||
const int length=s->getLoopEndPosition(DIV_SAMPLE_DEPTH_8BIT);
|
||||
int actualLength=MIN((int)(getSampleMemCapacity()-memPos)-1,length);
|
||||
if (actualLength>0) {
|
||||
sampleOffGA20[i]=memPos;
|
||||
for (int j=0; j<actualLength; j++) {
|
||||
// convert to 8 bit unsigned
|
||||
unsigned char val=((unsigned char)(s->data8[j]))^0x80;
|
||||
sampleMem[memPos++]=CLAMP(val,0x01,0xff);
|
||||
}
|
||||
// write end of sample marker
|
||||
memset(&sampleMem[memPos],0x00,1);
|
||||
memPos+=1;
|
||||
}
|
||||
if ((memPos+MAX(actualLength,0))>=(getSampleMemCapacity()-1)) {
|
||||
logW("out of GA20 PCM memory for sample %d!",i);
|
||||
break;
|
||||
} else {
|
||||
sampleLoaded[i]=true;
|
||||
}
|
||||
// allign to 16 byte
|
||||
memPos=(memPos+0xf)&~0xf;
|
||||
}
|
||||
sampleMemLen=memPos;
|
||||
}
|
||||
|
||||
int DivPlatformGA20::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
|
||||
parent=p;
|
||||
dumpWrites=false;
|
||||
skipRegisterWrites=false;
|
||||
|
||||
for (int i=0; i<4; i++) {
|
||||
isMuted[i]=false;
|
||||
oscBuf[i]=new DivDispatchOscBuffer;
|
||||
}
|
||||
sampleMem=new unsigned char[getSampleMemCapacity()];
|
||||
sampleMemLen=0;
|
||||
delay=0;
|
||||
setFlags(flags);
|
||||
ga20BufLen=65536;
|
||||
for (int i=0; i<4; i++) ga20Buf[i]=new short[ga20BufLen];
|
||||
reset();
|
||||
|
||||
return 4;
|
||||
}
|
||||
|
||||
void DivPlatformGA20::quit() {
|
||||
delete[] sampleMem;
|
||||
for (int i=0; i<4; i++) {
|
||||
delete[] ga20Buf[i];
|
||||
delete oscBuf[i];
|
||||
}
|
||||
}
|
|
@ -0,0 +1,109 @@
|
|||
/**
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef _GA20_H
|
||||
#define _GA20_H
|
||||
|
||||
#include "../dispatch.h"
|
||||
#include <queue>
|
||||
#include "../macroInt.h"
|
||||
#include "sound/ga20/iremga20.h"
|
||||
|
||||
class DivPlatformGA20: public DivDispatch, public iremga20_intf {
|
||||
struct Channel: public SharedChannel<int> {
|
||||
int prevFreq;
|
||||
unsigned int audPos;
|
||||
int sample;
|
||||
bool volumeChanged, setPos;
|
||||
int resVol;
|
||||
int macroVolMul;
|
||||
Channel():
|
||||
SharedChannel<int>(255),
|
||||
prevFreq(-1),
|
||||
audPos(0),
|
||||
sample(-1),
|
||||
volumeChanged(false),
|
||||
setPos(false),
|
||||
resVol(255),
|
||||
macroVolMul(64) {}
|
||||
};
|
||||
Channel chan[4];
|
||||
DivDispatchOscBuffer* oscBuf[4];
|
||||
bool isMuted[4];
|
||||
struct QueuedWrite {
|
||||
unsigned short addr;
|
||||
unsigned char val;
|
||||
unsigned short delay;
|
||||
QueuedWrite(unsigned short a, unsigned char v, unsigned short d=1):
|
||||
addr(a),
|
||||
val(v),
|
||||
delay(d) {}
|
||||
};
|
||||
std::queue<QueuedWrite> writes;
|
||||
unsigned int sampleOffGA20[256];
|
||||
bool sampleLoaded[256];
|
||||
|
||||
int delay;
|
||||
|
||||
short* ga20Buf[4];
|
||||
size_t ga20BufLen;
|
||||
|
||||
unsigned char* sampleMem;
|
||||
size_t sampleMemLen;
|
||||
iremga20_device ga20;
|
||||
unsigned char regPool[32];
|
||||
friend void putDispatchChip(void*,int);
|
||||
friend void putDispatchChan(void*,int,int);
|
||||
|
||||
void chWrite(unsigned char ch, unsigned int addr, unsigned char val);
|
||||
public:
|
||||
virtual u8 read_byte(u32 address) override;
|
||||
virtual void acquire(short* bufL, short* bufR, size_t start, size_t len) override;
|
||||
virtual int dispatch(DivCommand c) override;
|
||||
virtual void* getChanState(int chan) override;
|
||||
virtual DivMacroInt* getChanMacroInt(int ch) override;
|
||||
virtual DivDispatchOscBuffer* getOscBuffer(int chan) override;
|
||||
virtual unsigned char* getRegisterPool() override;
|
||||
virtual int getRegisterPoolSize() override;
|
||||
virtual void reset() override;
|
||||
virtual void forceIns() override;
|
||||
virtual void tick(bool sysTick=true) override;
|
||||
virtual void muteChannel(int ch, bool mute) override;
|
||||
virtual bool isStereo() override;
|
||||
virtual void notifyInsChange(int ins) override;
|
||||
virtual void notifyWaveChange(int wave) override;
|
||||
virtual void notifyInsDeletion(void* ins) override;
|
||||
virtual void setFlags(const DivConfig& flags) override;
|
||||
virtual void poke(unsigned int addr, unsigned short val) override;
|
||||
virtual void poke(std::vector<DivRegWrite>& wlist) override;
|
||||
virtual const char** getRegisterSheet() override;
|
||||
virtual const void* getSampleMem(int index = 0) override;
|
||||
virtual size_t getSampleMemCapacity(int index = 0) override;
|
||||
virtual size_t getSampleMemUsage(int index = 0) override;
|
||||
virtual bool isSampleLoaded(int index, int sample) override;
|
||||
virtual void renderSamples(int chipID) override;
|
||||
virtual int init(DivEngine* parent, int channels, int sugRate, const DivConfig& flags) override;
|
||||
virtual void quit() override;
|
||||
DivPlatformGA20():
|
||||
DivDispatch(),
|
||||
iremga20_intf(),
|
||||
ga20(*this) {}
|
||||
};
|
||||
|
||||
#endif
|
|
@ -0,0 +1,175 @@
|
|||
// license:BSD-3-Clause
|
||||
// copyright-holders:Acho A. Tang,R. Belmont, Valley Bell
|
||||
/*********************************************************
|
||||
|
||||
Irem GA20 PCM Sound Chip
|
||||
80 pin QFP, label NANAO GA20 (Nanao Corporation was Irem's parent company)
|
||||
|
||||
TODO:
|
||||
- It's not currently known whether this chip is stereo.
|
||||
- Is sample position base(regs 0,1) used while sample is playing, or
|
||||
latched at key on? We've always emulated it the latter way.
|
||||
gunforc2 seems to be the only game updating the address regs sometimes
|
||||
while a sample is playing, but it doesn't seem intentional.
|
||||
- What is the 2nd sample address for? Is it end(cut-off) address, or
|
||||
loop start address? Every game writes a value that's past sample end.
|
||||
- All games write either 0 or 2 to reg #6, do other bits have any function?
|
||||
|
||||
|
||||
Revisions:
|
||||
|
||||
04-15-2002 Acho A. Tang
|
||||
- rewrote channel mixing
|
||||
- added prelimenary volume and sample rate emulation
|
||||
|
||||
05-30-2002 Acho A. Tang
|
||||
- applied hyperbolic gain control to volume and used
|
||||
a musical-note style progression in sample rate
|
||||
calculation(still very inaccurate)
|
||||
|
||||
02-18-2004 R. Belmont
|
||||
- sample rate calculation reverse-engineered.
|
||||
Thanks to Fujix, Yasuhiro Ogawa, the Guru, and Tormod
|
||||
for real PCB samples that made this possible.
|
||||
|
||||
02-03-2007 R. Belmont
|
||||
- Cleaned up faux x86 assembly.
|
||||
|
||||
09-25-2018 Valley Bell & co
|
||||
- rewrote channel update to make data 0 act as sample terminator
|
||||
|
||||
|
||||
DISCLAIMER
|
||||
- This file is modified for suitable in furnace.
|
||||
- modified by cam900
|
||||
|
||||
*********************************************************/
|
||||
|
||||
#include "iremga20.h"
|
||||
|
||||
#include <string.h>
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// LIVE DEVICE
|
||||
//**************************************************************************
|
||||
|
||||
//-------------------------------------------------
|
||||
// iremga20_device - constructor
|
||||
//-------------------------------------------------
|
||||
|
||||
iremga20_device::iremga20_device(iremga20_intf &intf) :
|
||||
m_regs{0},
|
||||
m_channel{channel_def(), channel_def(), channel_def(), channel_def()},
|
||||
m_intf(intf)
|
||||
{
|
||||
}
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_reset - device-specific reset
|
||||
//-------------------------------------------------
|
||||
|
||||
void iremga20_device::device_reset()
|
||||
{
|
||||
memset(m_regs, 0, 0x20 * sizeof(u8));
|
||||
for (int i = 0; i < 4; i++)
|
||||
{
|
||||
m_channel[i].rate = 0;
|
||||
m_channel[i].pos = 0;
|
||||
m_channel[i].counter = 0;
|
||||
m_channel[i].end = 0;
|
||||
m_channel[i].volume = 0;
|
||||
m_channel[i].play = false;
|
||||
}
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// sound_stream_update - handle a stream update
|
||||
//-------------------------------------------------
|
||||
|
||||
void iremga20_device::sound_stream_update(short** outputs, int len)
|
||||
{
|
||||
for (int i = 0; i < len; i++)
|
||||
{
|
||||
for (int j = 0; j < 4; j++)
|
||||
{
|
||||
s32 sampleout = 0;
|
||||
|
||||
channel_def &ch = m_channel[j];
|
||||
if (ch.play)
|
||||
{
|
||||
int sample = m_intf.read_byte(ch.pos);
|
||||
if (sample == 0x00) // check for sample end marker
|
||||
ch.play = false;
|
||||
else
|
||||
{
|
||||
sampleout = (sample - 0x80) * (s32)ch.volume;
|
||||
ch.counter--;
|
||||
if (ch.counter <= ch.rate)
|
||||
{
|
||||
ch.pos++;
|
||||
ch.counter = 0x100;
|
||||
}
|
||||
}
|
||||
}
|
||||
outputs[j][i] = sampleout;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void iremga20_device::write(u32 offset, u8 data)
|
||||
{
|
||||
offset &= 0x1f;
|
||||
m_regs[offset] = data;
|
||||
int ch = offset >> 3;
|
||||
|
||||
// channel regs:
|
||||
// 0,1: start address
|
||||
// 2,3: end? address
|
||||
// 4: rate
|
||||
// 5: volume
|
||||
// 6: control
|
||||
// 7: voice status (read-only)
|
||||
|
||||
switch (offset & 0x7)
|
||||
{
|
||||
case 4:
|
||||
m_channel[ch].rate = data;
|
||||
break;
|
||||
|
||||
case 5:
|
||||
m_channel[ch].volume = (data * 256) / (data + 10);
|
||||
break;
|
||||
|
||||
case 6:
|
||||
// d1: key on/off
|
||||
if (data & 2)
|
||||
{
|
||||
m_channel[ch].play = true;
|
||||
m_channel[ch].pos = (m_regs[ch << 3 | 0] | m_regs[ch << 3 | 1] << 8) << 4;
|
||||
m_channel[ch].end = (m_regs[ch << 3 | 2] | m_regs[ch << 3 | 3] << 8) << 4;
|
||||
m_channel[ch].counter = 0x100;
|
||||
}
|
||||
else
|
||||
m_channel[ch].play = false;
|
||||
|
||||
// other: unknown/unused
|
||||
// possibilities are: loop flag, left/right speaker(stereo)
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
u8 iremga20_device::read(u32 offset)
|
||||
{
|
||||
offset &= 0x1f;
|
||||
int ch = offset >> 3;
|
||||
|
||||
switch (offset & 0x7)
|
||||
{
|
||||
case 7: // voice status. bit 0 is 1 if active. (routine around 0xccc in rtypeleo)
|
||||
return m_channel[ch].play ? 1 : 0;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
|
@ -0,0 +1,74 @@
|
|||
// license:BSD-3-Clause
|
||||
// copyright-holders:Acho A. Tang,R. Belmont
|
||||
/*********************************************************
|
||||
|
||||
Irem GA20 PCM Sound Chip
|
||||
|
||||
DISCLAIMER
|
||||
- This file is modified for suitable in furnace.
|
||||
- modified by cam900
|
||||
|
||||
*********************************************************/
|
||||
#ifndef MAME_SOUND_IREMGA20_H
|
||||
#define MAME_SOUND_IREMGA20_H
|
||||
|
||||
#pragma once
|
||||
|
||||
//**************************************************************************
|
||||
// TYPE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
using u8 = unsigned char;
|
||||
using u32 = unsigned int;
|
||||
using s32 = signed int;
|
||||
|
||||
class iremga20_intf
|
||||
{
|
||||
public:
|
||||
virtual u8 read_byte(u32 address) { return 0; };
|
||||
};
|
||||
|
||||
// ======================> iremga20_device
|
||||
|
||||
class iremga20_device
|
||||
{
|
||||
public:
|
||||
iremga20_device(iremga20_intf &intf);
|
||||
|
||||
void write(u32 offset, u8 data);
|
||||
u8 read(u32 offset);
|
||||
|
||||
// device-level overrides
|
||||
void device_reset();
|
||||
|
||||
// sound stream update overrides
|
||||
void sound_stream_update(short** outputs, int len);
|
||||
|
||||
private:
|
||||
struct channel_def
|
||||
{
|
||||
channel_def() :
|
||||
rate(0),
|
||||
pos(0),
|
||||
counter(0),
|
||||
end(0),
|
||||
volume(0),
|
||||
play(0)
|
||||
{
|
||||
}
|
||||
|
||||
u32 rate;
|
||||
u32 pos;
|
||||
u32 counter;
|
||||
u32 end;
|
||||
u32 volume;
|
||||
bool play;
|
||||
};
|
||||
|
||||
u8 m_regs[0x20];
|
||||
channel_def m_channel[4];
|
||||
|
||||
iremga20_intf &m_intf;
|
||||
};
|
||||
|
||||
#endif // MAME_SOUND_IREMGA20_H
|
|
@ -1710,7 +1710,7 @@ void DivEngine::registerSystems() {
|
|||
{"CH1", "CH2", "CH3", "CH4"},
|
||||
{DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM, DIV_CH_PCM},
|
||||
{DIV_INS_GA20, DIV_INS_GA20, DIV_INS_GA20, DIV_INS_GA20},
|
||||
{DIV_INS_AMIGA, DIV_INS_AMIGA}
|
||||
{DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA, DIV_INS_AMIGA}
|
||||
);
|
||||
|
||||
sysDefs[DIV_SYSTEM_DUMMY]=new DivSysDef(
|
||||
|
|
|
@ -513,6 +513,16 @@ void DivEngine::performVGMWrite(SafeWriter* w, DivSystem sys, DivRegWrite& write
|
|||
w->writeS_BE(baseAddr2S|(0x580>>2));
|
||||
w->writeC(0xff);
|
||||
break;
|
||||
case DIV_SYSTEM_GA20:
|
||||
for (int i=0; i<3; i++) {
|
||||
w->writeC(0xbf); // mute
|
||||
w->writeC((baseAddr2|5)+(i*8));
|
||||
w->writeC(0);
|
||||
w->writeC(0xbf); // keyoff
|
||||
w->writeC((baseAddr2|6)+(i*8));
|
||||
w->writeC(0);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
@ -829,6 +839,11 @@ void DivEngine::performVGMWrite(SafeWriter* w, DivSystem sys, DivRegWrite& write
|
|||
w->writeC(baseAddr2|(write.addr&0x7f));
|
||||
w->writeC(write.val);
|
||||
break;
|
||||
case DIV_SYSTEM_GA20:
|
||||
w->writeC(0xbf);
|
||||
w->writeC(baseAddr2|(write.addr&0x7f));
|
||||
w->writeC(write.val);
|
||||
break;
|
||||
default:
|
||||
logW("write not handled!");
|
||||
break;
|
||||
|
@ -975,6 +990,7 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
|
|||
DivDispatch* writeZ280[2]={NULL,NULL};
|
||||
DivDispatch* writeRF5C68[2]={NULL,NULL};
|
||||
DivDispatch* writeMSM6295[2]={NULL,NULL};
|
||||
DivDispatch* writeGA20[2]={NULL,NULL};
|
||||
|
||||
for (int i=0; i<song.systemLen; i++) {
|
||||
willExport[i]=false;
|
||||
|
@ -1394,6 +1410,19 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
|
|||
howManyChips++;
|
||||
}
|
||||
break;
|
||||
case DIV_SYSTEM_GA20:
|
||||
if (!hasGA20) {
|
||||
hasGA20=disCont[i].dispatch->chipClock;
|
||||
willExport[i]=true;
|
||||
writeGA20[0]=disCont[i].dispatch;
|
||||
} else if (!(hasGA20&0x40000000)) {
|
||||
isSecond[i]=true;
|
||||
willExport[i]=true;
|
||||
writeGA20[1]=disCont[i].dispatch;
|
||||
hasGA20|=0x40000000;
|
||||
howManyChips++;
|
||||
}
|
||||
break;
|
||||
case DIV_SYSTEM_T6W28:
|
||||
if (!hasSN) {
|
||||
hasSN=0xc0000000|disCont[i].dispatch->chipClock;
|
||||
|
@ -1776,6 +1805,15 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
|
|||
w->writeI(0);
|
||||
w->write(writeMSM6295[i]->getSampleMem(),writeMSM6295[i]->getSampleMemUsage());
|
||||
}
|
||||
if (writeGA20[i]!=NULL && writeGA20[i]->getSampleMemUsage()>0) {
|
||||
w->writeC(0x67);
|
||||
w->writeC(0x66);
|
||||
w->writeC(0x93);
|
||||
w->writeI((writeGA20[i]->getSampleMemUsage()+8)|(i*0x80000000));
|
||||
w->writeI(writeGA20[i]->getSampleMemCapacity());
|
||||
w->writeI(0);
|
||||
w->write(writeGA20[i]->getSampleMem(),writeGA20[i]->getSampleMemUsage());
|
||||
}
|
||||
}
|
||||
|
||||
// initialize streams
|
||||
|
|
|
@ -49,6 +49,7 @@
|
|||
#include "../engine/platform/lynx.h"
|
||||
#include "../engine/platform/pcmdac.h"
|
||||
#include "../engine/platform/k007232.h"
|
||||
#include "../engine/platform/ga20.h"
|
||||
#include "../engine/platform/dummy.h"
|
||||
|
||||
#define COMMON_CHIP_DEBUG \
|
||||
|
@ -502,6 +503,14 @@ void putDispatchChip(void* data, int type) {
|
|||
ImGui::TextColored(ch->stereo?colorOn:colorOff,">> Stereo");
|
||||
break;
|
||||
}
|
||||
case DIV_SYSTEM_GA20: {
|
||||
DivPlatformGA20* ch=(DivPlatformGA20*)data;
|
||||
ImGui::Text("> GA20");
|
||||
COMMON_CHIP_DEBUG;
|
||||
ImGui::Text("- delay: %.2x",ch->delay);
|
||||
COMMON_CHIP_DEBUG_BOOL;
|
||||
break;
|
||||
}
|
||||
default:
|
||||
ImGui::Text("Unimplemented chip! Help!");
|
||||
break;
|
||||
|
@ -914,6 +923,20 @@ void putDispatchChan(void* data, int chanNum, int type) {
|
|||
ImGui::TextColored(ch->setPos?colorOn:colorOff,">> SetPos");
|
||||
break;
|
||||
}
|
||||
case DIV_SYSTEM_GA20: {
|
||||
DivPlatformGA20::Channel* ch=(DivPlatformGA20::Channel*)data;
|
||||
ImGui::Text("> GA20");
|
||||
COMMON_CHAN_DEBUG;
|
||||
ImGui::Text("- prevFreq: %d",ch->prevFreq);
|
||||
ImGui::Text("* Sample: %d",ch->sample);
|
||||
ImGui::Text(" - pos: %d",ch->audPos);
|
||||
ImGui::Text("- resVol: %.2x",ch->resVol);
|
||||
ImGui::Text("- macroVolMul: %.2x",ch->macroVolMul);
|
||||
COMMON_CHAN_DEBUG_BOOL;
|
||||
ImGui::TextColored(ch->volumeChanged?colorOn:colorOff,">> VolumeChanged");
|
||||
ImGui::TextColored(ch->setPos?colorOn:colorOff,">> SetPos");
|
||||
break;
|
||||
}
|
||||
default:
|
||||
ImGui::Text("Unimplemented chip! Help!");
|
||||
break;
|
||||
|
|
|
@ -1325,7 +1325,8 @@ void FurnaceGUI::doAction(int what) {
|
|||
i==DIV_INS_SU ||
|
||||
i==DIV_INS_SNES ||
|
||||
i==DIV_INS_ES5506 ||
|
||||
i==DIV_INS_K007232) {
|
||||
i==DIV_INS_K007232 ||
|
||||
i==DIV_INS_GA20) {
|
||||
makeInsTypeList.push_back(i);
|
||||
}
|
||||
}
|
||||
|
|
|
@ -983,6 +983,7 @@ const int availableSystems[]={
|
|||
DIV_SYSTEM_SNES,
|
||||
DIV_SYSTEM_MSM5232,
|
||||
DIV_SYSTEM_K007232,
|
||||
DIV_SYSTEM_GA20,
|
||||
DIV_SYSTEM_PCM_DAC,
|
||||
DIV_SYSTEM_PONG,
|
||||
0 // don't remove this last one!
|
||||
|
@ -1083,6 +1084,7 @@ const int chipsSample[]={
|
|||
DIV_SYSTEM_RF5C68,
|
||||
DIV_SYSTEM_SNES,
|
||||
DIV_SYSTEM_K007232,
|
||||
DIV_SYSTEM_GA20,
|
||||
DIV_SYSTEM_PCM_DAC,
|
||||
0 // don't remove this last one!
|
||||
};
|
||||
|
|
|
@ -4253,7 +4253,8 @@ void FurnaceGUI::drawInsEdit() {
|
|||
ins->type==DIV_INS_SU ||
|
||||
ins->type==DIV_INS_SNES ||
|
||||
ins->type==DIV_INS_ES5506 ||
|
||||
ins->type==DIV_INS_K007232) {
|
||||
ins->type==DIV_INS_K007232 ||
|
||||
ins->type==DIV_INS_GA20) {
|
||||
if (ImGui::BeginTabItem((ins->type==DIV_INS_SU)?"Sound Unit":"Sample")) {
|
||||
String sName;
|
||||
if (ins->amiga.initSample<0 || ins->amiga.initSample>=e->song.sampleLen) {
|
||||
|
@ -4943,7 +4944,8 @@ void FurnaceGUI::drawInsEdit() {
|
|||
if (ins->type==DIV_INS_ADPCMA) {
|
||||
volMax=31;
|
||||
}
|
||||
if (ins->type==DIV_INS_ADPCMB || ins->type==DIV_INS_YMZ280B || ins->type==DIV_INS_RF5C68) {
|
||||
if (ins->type==DIV_INS_ADPCMB || ins->type==DIV_INS_YMZ280B || ins->type==DIV_INS_RF5C68 ||
|
||||
ins->type==DIV_INS_GA20) {
|
||||
volMax=255;
|
||||
}
|
||||
if (ins->type==DIV_INS_QSOUND) {
|
||||
|
@ -4998,7 +5000,7 @@ void FurnaceGUI::drawInsEdit() {
|
|||
}
|
||||
if (ins->type==DIV_INS_TIA || ins->type==DIV_INS_AMIGA || ins->type==DIV_INS_SCC ||
|
||||
ins->type==DIV_INS_PET || ins->type==DIV_INS_VIC || ins->type==DIV_INS_SEGAPCM ||
|
||||
ins->type==DIV_INS_FM || ins->type==DIV_INS_K007232) {
|
||||
ins->type==DIV_INS_FM || ins->type==DIV_INS_K007232 || ins->type==DIV_INS_GA20) {
|
||||
dutyMax=0;
|
||||
}
|
||||
if (ins->type==DIV_INS_VBOY) {
|
||||
|
@ -5082,6 +5084,7 @@ void FurnaceGUI::drawInsEdit() {
|
|||
if (ins->type==DIV_INS_MSM6295) waveMax=0;
|
||||
if (ins->type==DIV_INS_SEGAPCM) waveMax=0;
|
||||
if (ins->type==DIV_INS_K007232) waveMax=0;
|
||||
if (ins->type==DIV_INS_GA20) waveMax=0;
|
||||
if (ins->type==DIV_INS_POKEMINI) waveMax=0;
|
||||
if (ins->type==DIV_INS_SU) waveMax=7;
|
||||
if (ins->type==DIV_INS_PET) {
|
||||
|
@ -5282,7 +5285,8 @@ void FurnaceGUI::drawInsEdit() {
|
|||
ins->type==DIV_INS_T6W28 ||
|
||||
ins->type==DIV_INS_VBOY ||
|
||||
(ins->type==DIV_INS_X1_010 && ins->amiga.useSample) ||
|
||||
ins->type==DIV_INS_K007232) {
|
||||
ins->type==DIV_INS_K007232 ||
|
||||
ins->type==DIV_INS_GA20) {
|
||||
macroList.push_back(FurnaceGUIMacroDesc("Phase Reset",&ins->std.phaseResetMacro,0,1,32,uiColors[GUI_COLOR_MACRO_OTHER],false,NULL,NULL,true));
|
||||
}
|
||||
if (ex1Max>0) {
|
||||
|
|
|
@ -1158,6 +1158,11 @@ void FurnaceGUI::initSystemPresets() {
|
|||
CH(DIV_SYSTEM_K007232, 64, 0, "")
|
||||
}
|
||||
);
|
||||
ENTRY(
|
||||
"Irem GA20", {
|
||||
CH(DIV_SYSTEM_GA20, 64, 0, "")
|
||||
}
|
||||
);
|
||||
ENTRY(
|
||||
"Generic PCM DAC", {
|
||||
CH(DIV_SYSTEM_PCM_DAC, 64, 0, "")
|
||||
|
@ -2194,6 +2199,12 @@ void FurnaceGUI::initSystemPresets() {
|
|||
)
|
||||
}
|
||||
);
|
||||
ENTRY(
|
||||
"Irem M92/M107", {
|
||||
CH(DIV_SYSTEM_YM2151, 64, 0, ""),
|
||||
CH(DIV_SYSTEM_GA20, 64, 0, "")
|
||||
}
|
||||
);
|
||||
CATEGORY_END;
|
||||
|
||||
CATEGORY_BEGIN("DefleMask-compatible","these configurations are compatible with DefleMask.\nselect this if you need to save as .dmf or work with that program.");
|
||||
|
|
|
@ -1565,6 +1565,7 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
|
|||
case DIV_SYSTEM_BUBSYS_WSG:
|
||||
case DIV_SYSTEM_PET:
|
||||
case DIV_SYSTEM_VBOY:
|
||||
case DIV_SYSTEM_GA20:
|
||||
ImGui::Text("nothing to configure");
|
||||
break;
|
||||
case DIV_SYSTEM_VERA:
|
||||
|
|
|
@ -194,6 +194,7 @@ TAParamResult pVersion(String) {
|
|||
printf("- reSIDfp by Dag Lem, Antti Lankila and Leandro Nini (GPLv2)\n");
|
||||
printf("- Stella by Stella Team (GPLv2)\n");
|
||||
printf("- vgsound_emu (second version, modified version) by cam900 (zlib license)\n");
|
||||
printf("- MAME GA20 core by Acho A. Tang, R. Belmont, Valley Bell (BSD 3-clause)\n");
|
||||
return TA_PARAM_QUIT;
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in New Issue