535 lines
15 KiB
C++
535 lines
15 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2023 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 "k053260.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) {k053260.write(a,v); regPool[a]=v; if(dumpWrites) addWrite(a,v);}}
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#define CHIP_DIVIDER 16
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#define TICK_DIVIDER 64 // for match to YM3012 output rate
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const char* regCheatSheetK053260[]={
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"MainToSub0", "00",
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"MainToSub1", "01",
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"SubToMain0", "02",
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"SubToMain1", "03",
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"CHx_FreqL", "08+x*8",
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"CHx_FreqH", "09+x*8",
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"CHx_LengthL", "0A+x*8",
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"CHx_LengthH", "0B+x*8",
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"CHx_StartL", "0C+x*8",
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"CHx_StartM", "0D+x*8",
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"CHx_StartH", "0E+x*8",
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"CHx_Volume", "0F+x*8",
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"KeyOn", "28",
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"Status", "29",
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"LoopFormat", "2A",
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"Test", "2B",
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"CH01_Pan", "2C",
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"CH23_Pan", "2D",
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"ROMReadback", "2E",
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"Control", "2F",
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NULL
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};
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const char** DivPlatformK053260::getRegisterSheet() {
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return regCheatSheetK053260;
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}
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inline void DivPlatformK053260::chWrite(unsigned char ch, unsigned int addr, unsigned char val) {
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if (!skipRegisterWrites) {
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rWrite(8+((ch<<3)|(addr&7)),val);
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}
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}
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u8 DivPlatformK053260::read_sample(u32 address) {
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if ((sampleMem!=NULL) && (address<getSampleMemCapacity())) {
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return sampleMem[address&0x1fffff];
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}
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return 0;
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}
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void DivPlatformK053260::acquire(short** buf, size_t len) {
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for (size_t i=0; i<len; i++) {
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k053260.tick(TICK_DIVIDER);
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int lout=(k053260.output(0)); // scale to 16 bit
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int rout=(k053260.output(1)); // scale to 16 bit
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if (lout>32767) lout=32767;
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if (lout<-32768) lout=-32768;
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if (rout>32767) rout=32767;
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if (rout<-32768) rout=-32768;
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buf[0][i]=lout;
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buf[1][i]=rout;
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for (int i=0; i<4; i++) {
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oscBuf[i]->data[oscBuf[i]->needle++]=(k053260.voice_out(i,0)+k053260.voice_out(i,1))>>2;
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}
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}
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}
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void DivPlatformK053260::tick(bool sysTick) {
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unsigned char panMask=0;
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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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chan[i].outVol=((chan[i].vol&0x7f)*MIN(chan[i].macroVolMul,chan[i].std.vol.val))/chan[i].macroVolMul;
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chWrite(i,7,chan[i].outVol);
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}
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if (NEW_ARP_STRAT) {
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chan[i].handleArp();
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} else 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.panL.had) { // panning
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chan[i].panning=4+chan[i].std.panL.val;
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if (!isMuted[i]) {
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panMask|=1<<i;
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}
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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].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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int sample=chan[i].sample;
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DivSample* s=parent->getSample(sample);
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unsigned char keyon=regPool[0x28]|(1<<i);
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unsigned char keyoff=keyon&~(0x11<<i);
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unsigned char loopoff=regPool[0x2a]&~(0x11<<i);
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unsigned char loopon=loopoff|(s->isLoopable()?(1<<i):0)|(s->depth==DIV_SAMPLE_DEPTH_ADPCM_K?(0x10<<i):0);
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double off=1.0;
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if (sample>=0 && sample<parent->song.sampleLen) {
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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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chan[i].freq=0x1000-(int)(off*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));
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if (chan[i].freq>4095) chan[i].freq=4095;
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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 length=0;
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if (sample>=0 && sample<parent->song.sampleLen) {
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start=sampleOffK053260[sample];
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length=(s->depth==DIV_SAMPLE_DEPTH_ADPCM_K)?s->lengthK:s->length8;
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if (chan[i].reverse) {
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start+=length;
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keyon|=(16<<i);
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}
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}
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if (chan[i].audPos>0) {
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if (s->depth==DIV_SAMPLE_DEPTH_ADPCM_K) {
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chan[i].audPos>>=1;
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if (chan[i].reverse) {
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start=start-MIN(chan[i].audPos,s->lengthK);
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} else {
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start=start+MIN(chan[i].audPos,s->lengthK);
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}
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} else {
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if (chan[i].reverse) {
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start=start-MIN(chan[i].audPos,s->length8);
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} else {
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start=start+MIN(chan[i].audPos,s->length8);
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}
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}
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length=MAX(1,length-chan[i].audPos);
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}
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start=MIN(start,getSampleMemCapacity());
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length=MIN(65535,MIN(length,getSampleMemCapacity()));
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rWrite(0x28,keyoff); // force keyoff first
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rWrite(0x2a,loopoff);
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chWrite(i,2,length&0xff);
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chWrite(i,3,length>>8);
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chWrite(i,4,start&0xff);
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chWrite(i,5,start>>8);
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chWrite(i,6,start>>16);
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if (!chan[i].std.vol.had) {
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chan[i].outVol=chan[i].vol;
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chWrite(i,7,chan[i].outVol);
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}
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rWrite(0x2a,loopon);
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rWrite(0x28,keyon);
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chan[i].keyOn=false;
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}
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if (chan[i].keyOff) {
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rWrite(0x28,keyoff);
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rWrite(0x2a,loopoff);
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chan[i].keyOff=false;
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}
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if (chan[i].freqChanged) {
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chWrite(i,0,chan[i].freq&0xff);
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chWrite(i,1,chan[i].freq>>8);
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chan[i].freqChanged=false;
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}
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}
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}
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if (panMask) {
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updatePanning(panMask);
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}
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}
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void DivPlatformK053260::updatePanning(unsigned char mask) {
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if (mask&3) {
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rWrite(0x2c,
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(isMuted[0]?0:chan[0].panning)|
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(isMuted[1]?0:chan[1].panning<<3));
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}
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if (mask&0xc) {
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rWrite(0x2d,
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(isMuted[2]?0:chan[2].panning)|
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(isMuted[3]?0:chan[3].panning<<3));
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}
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}
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int DivPlatformK053260::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?64:127;
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].sample=ins->amiga.getSample(c.value);
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c.value=ins->amiga.getFreq(c.value);
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}
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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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}
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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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chWrite(c.chan,7,chan[c.chan].outVol);
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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_PANNING:
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chan[c.chan].panning=MIN(parent->convertPanSplitToLinearLR(c.value,c.value2,7)+1,7);
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if (!isMuted[c.chan]) {
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updatePanning(1<<c.chan);
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}
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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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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+((HACKY_LEGATO_MESS)?(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 && !NEW_ARP_STRAT) 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_SAMPLE_DIR: {
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if (chan[c.chan].reverse!=(bool)(c.value&1)) {
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chan[c.chan].reverse=c.value&1;
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}
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break;
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}
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case DIV_CMD_GET_VOLMAX:
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return 127;
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break;
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case DIV_CMD_MACRO_OFF:
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chan[c.chan].std.mask(c.value,true);
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break;
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case DIV_CMD_MACRO_ON:
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chan[c.chan].std.mask(c.value,false);
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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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void DivPlatformK053260::muteChannel(int ch, bool mute) {
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isMuted[ch]=mute;
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updatePanning(1<<ch);
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}
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void DivPlatformK053260::forceIns() {
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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].freqChanged=true;
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chan[i].sample=-1;
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chWrite(i,1,isMuted[i]?0:chan[i].panning);
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}
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}
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void* DivPlatformK053260::getChanState(int ch) {
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return &chan[ch];
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}
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DivMacroInt* DivPlatformK053260::getChanMacroInt(int ch) {
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return &chan[ch].std;
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}
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unsigned short DivPlatformK053260::getPan(int ch) {
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return parent->convertPanLinearToSplit(chan[ch].panning,8,7);
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}
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DivDispatchOscBuffer* DivPlatformK053260::getOscBuffer(int ch) {
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return oscBuf[ch];
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}
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void DivPlatformK053260::reset() {
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memset(regPool,0,64);
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k053260.reset();
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rWrite(0x28,0); // keyoff all channels
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for (int i=0; i<4; i++) {
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chan[i]=DivPlatformK053260::Channel();
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chan[i].std.setEngine(parent);
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}
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updatePanning(0xf);
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rWrite(0x2f,2); // sound enable
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}
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int DivPlatformK053260::getOutputCount() {
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return 2;
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}
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void DivPlatformK053260::notifyInsChange(int ins) {
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for (int i=0; i<4; i++) {
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if (chan[i].ins==ins) {
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chan[i].insChanged=true;
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}
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}
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}
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void DivPlatformK053260::notifyWaveChange(int wave) {
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}
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void DivPlatformK053260::notifyInsDeletion(void* ins) {
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for (int i=0; i<4; i++) {
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chan[i].std.notifyInsDeletion((DivInstrument*)ins);
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}
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}
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void DivPlatformK053260::setFlags(const DivConfig& flags) {
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switch (flags.getInt("clockSel",0)) {
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case 1: chipClock=4000000; break;
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default: chipClock=COLOR_NTSC; break;
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}
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CHECK_CUSTOM_CLOCK;
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rate=chipClock/TICK_DIVIDER;
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for (int i=0; i<4; i++) {
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oscBuf[i]->rate=rate;
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}
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}
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void DivPlatformK053260::poke(unsigned int addr, unsigned short val) {
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rWrite(addr&0x3f,val);
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}
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void DivPlatformK053260::poke(std::vector<DivRegWrite>& wlist) {
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for (DivRegWrite& i: wlist) rWrite(i.addr&0x3f,i.val);
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}
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unsigned char* DivPlatformK053260::getRegisterPool() {
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regPool[0x29]=k053260.read(0x29); // dynamically updated
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return regPool;
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}
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int DivPlatformK053260::getRegisterPoolSize() {
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return 64;
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}
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const void* DivPlatformK053260::getSampleMem(int index) {
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return index == 0 ? sampleMem : NULL;
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}
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size_t DivPlatformK053260::getSampleMemCapacity(int index) {
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return index == 0 ? 2097152 : 0;
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}
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size_t DivPlatformK053260::getSampleMemUsage(int index) {
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return index == 0 ? sampleMemLen : 0;
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}
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bool DivPlatformK053260::isSampleLoaded(int index, int sample) {
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if (index!=0) return false;
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if (sample<0 || sample>255) return false;
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return sampleLoaded[sample];
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}
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void DivPlatformK053260::renderSamples(int sysID) {
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memset(sampleMem,0,getSampleMemCapacity());
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memset(sampleOffK053260,0,256*sizeof(unsigned int));
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memset(sampleLoaded,0,256*sizeof(bool));
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size_t memPos=1; // for avoid silence
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for (int i=0; i<parent->song.sampleLen; i++) {
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DivSample* s=parent->song.sample[i];
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if (!s->renderOn[0][sysID]) {
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sampleOffK053260[i]=0;
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continue;
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}
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int length, actualLength;
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if (s->depth==DIV_SAMPLE_DEPTH_ADPCM_K) {
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length=MIN(65535,s->getEndPosition(DIV_SAMPLE_DEPTH_ADPCM_K));
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actualLength=MIN((int)(getSampleMemCapacity()-memPos-1),length);
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if (actualLength>0) {
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sampleOffK053260[i]=memPos-1;
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for (int j=0; j<actualLength; j++) {
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sampleMem[memPos++]=s->dataK[j];
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}
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sampleMem[memPos++]=0; // Silence for avoid popping noise
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}
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} else {
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length=MIN(65535,s->getEndPosition(DIV_SAMPLE_DEPTH_8BIT));
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actualLength=MIN((int)(getSampleMemCapacity()-memPos-1),length);
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if (actualLength>0) {
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sampleOffK053260[i]=memPos-1;
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for (int j=0; j<actualLength; j++) {
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sampleMem[memPos++]=s->data8[j];
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}
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sampleMem[memPos++]=0; // Silence for avoid popping noise
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}
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}
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if (actualLength<length) {
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logW("out of K053260 PCM memory for sample %d!",i);
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break;
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}
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sampleLoaded[i]=true;
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}
|
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sampleMemLen=memPos;
|
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}
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|
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int DivPlatformK053260::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
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parent=p;
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dumpWrites=false;
|
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skipRegisterWrites=false;
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|
|
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for (int i=0; i<4; i++) {
|
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isMuted[i]=false;
|
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oscBuf[i]=new DivDispatchOscBuffer;
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}
|
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sampleMem=new unsigned char[getSampleMemCapacity()];
|
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sampleMemLen=0;
|
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setFlags(flags);
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reset();
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|
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return 4;
|
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}
|
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|
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void DivPlatformK053260::quit() {
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delete[] sampleMem;
|
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for (int i=0; i<4; i++) {
|
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delete oscBuf[i];
|
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}
|
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}
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