407 lines
11 KiB
C++
407 lines
11 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 "t6w28.h"
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#include "../engine.h"
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#include "sound/t6w28/T6W28_Apu.h"
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#include <math.h>
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//#define rWrite(a,v) pendingWrites[a]=v;
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#define rWrite(a,v) if (!skipRegisterWrites) {writes.push(QueuedWrite(a,v)); if (dumpWrites) {addWrite(a,v);} }
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const char* regCheatSheetT6W28[]={
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"Data0", "0",
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"Data1", "1",
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NULL
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};
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const char** DivPlatformT6W28::getRegisterSheet() {
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return regCheatSheetT6W28;
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}
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void DivPlatformT6W28::acquire(short** buf, size_t len) {
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for (size_t h=0; h<len; h++) {
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cycles=0;
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while (!writes.empty() && cycles<16) {
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QueuedWrite w=writes.front();
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if (w.addr) {
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t6w->write_data_right(cycles,w.val);
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} else {
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t6w->write_data_left(cycles,w.val);
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}
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regPool[w.addr&1]=w.val;
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//cycles+=2;
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writes.pop();
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}
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t6w->end_frame(16);
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tempL=0;
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tempR=0;
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for (int i=0; i<4; i++) {
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oscBuf[i]->data[oscBuf[i]->needle++]=(out[i][1].curValue+out[i][2].curValue)<<7;
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tempL+=out[i][1].curValue<<7;
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tempR+=out[i][2].curValue<<7;
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}
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if (tempL<-32768) tempL=-32768;
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if (tempL>32767) tempL=32767;
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if (tempR<-32768) tempR=-32768;
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if (tempR>32767) tempR=32767;
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buf[0][h]=tempL;
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buf[1][h]=tempR;
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}
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}
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void DivPlatformT6W28::writeOutVol(int ch) {
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if (chan[ch].active) {
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int left=15-CLAMP(chan[ch].outVol+chan[ch].panL-15,0,15);
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int right=15-CLAMP(chan[ch].outVol+chan[ch].panR-15,0,15);
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rWrite(0,0x90|(ch<<5)|(isMuted[ch]?15:left));
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rWrite(1,0x90|(ch<<5)|(isMuted[ch]?15:right));
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} else {
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rWrite(0,0x9f|(ch<<5));
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rWrite(1,0x9f|(ch<<5));
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}
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}
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double DivPlatformT6W28::NOTE_SN(int ch, int note) {
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double CHIP_DIVIDER=16;
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if (ch==3) CHIP_DIVIDER=15;
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if (parent->song.linearPitch==2 || !easyNoise) {
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return NOTE_PERIODIC(note);
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}
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if (note>107) {
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return MAX(0,13-(note-107));
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}
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return NOTE_PERIODIC(note);
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}
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int DivPlatformT6W28::snCalcFreq(int ch) {
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if (parent->song.linearPitch==2 && easyNoise && chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2>(107<<7)) {
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int ret=(((13<<7)+0x40)-(chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2-(107<<7)))>>7;
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if (ret<0) ret=0;
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return ret;
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}
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return parent->calcFreq(chan[ch].baseFreq,chan[ch].pitch,chan[ch].fixedArp?chan[ch].baseNoteOverride:chan[ch].arpOff,chan[ch].fixedArp,true,0,chan[ch].pitch2,chipClock,ch==3?15:16);
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}
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void DivPlatformT6W28::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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chan[i].outVol=VOL_SCALE_LOG_BROKEN(chan[i].vol&15,MIN(15,chan[i].std.vol.val),15);
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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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int noiseSeek=parent->calcArp(chan[i].note,chan[i].std.arp.val);
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chan[i].baseFreq=NOTE_SN(i,noiseSeek);
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}
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chan[i].freqChanged=true;
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}
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if (i==3 && chan[i].std.duty.had) {
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if (chan[i].duty!=chan[i].std.duty.val) {
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chan[i].duty=((chan[i].std.duty.val==1)?4:0)|3;
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rWrite(1,0xe0+chan[i].duty);
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}
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}
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if (chan[i].std.panL.had) {
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chan[i].panL=chan[i].std.panL.val&15;
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}
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if (chan[i].std.panR.had) {
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chan[i].panR=chan[i].std.panR.val&15;
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}
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if (chan[i].std.vol.had || chan[i].std.panL.had || chan[i].std.panR.had) {
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writeOutVol(i);
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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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rWrite(1,0xe0+chan[i].duty);
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}
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if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
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chan[i].freq=snCalcFreq(i);
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if (chan[i].freq<0) chan[i].freq=0;
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if (chan[i].freq>1023) chan[i].freq=1023;
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if (i==3) {
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rWrite(1,0x80|(2<<5)|(chan[3].freq&15));
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rWrite(1,chan[3].freq>>4);
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} else {
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rWrite(0,0x80|i<<5|(chan[i].freq&15));
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rWrite(0,chan[i].freq>>4);
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}
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if (chan[i].keyOn) chan[i].keyOn=false;
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if (chan[i].keyOff) chan[i].keyOff=false;
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chan[i].freqChanged=false;
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}
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}
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}
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int DivPlatformT6W28::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_PCE);
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].baseFreq=NOTE_SN(c.chan,c.value);
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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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writeOutVol(c.chan);
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}
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chan[c.chan].insChanged=false;
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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].active=false;
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chan[c.chan].keyOff=true;
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chan[c.chan].macroInit(NULL);
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writeOutVol(c.chan);
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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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chan[c.chan].insChanged=true;
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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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writeOutVol(c.chan);
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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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int destFreq=NOTE_SN(c.chan,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_STD_NOISE_MODE:
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if (c.chan!=3) break;
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chan[c.chan].duty=(((c.value&15)==1)?4:0)|3;
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rWrite(1,0xe0+chan[c.chan].duty);
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break;
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case DIV_CMD_PANNING: {
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chan[c.chan].panL=c.value>>4;
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chan[c.chan].panR=c.value2>>4;
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writeOutVol(c.chan);
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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_SN(c.chan,c.value+((HACKY_LEGATO_MESS)?(chan[c.chan].std.arp.val):(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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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_T6W28));
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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_SN(c.chan,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_GET_VOLMAX:
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return 15;
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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 DivPlatformT6W28::muteChannel(int ch, bool mute) {
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isMuted[ch]=mute;
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}
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void DivPlatformT6W28::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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}
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rWrite(1,0xe0+chan[3].duty);
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}
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void* DivPlatformT6W28::getChanState(int ch) {
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return &chan[ch];
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}
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DivMacroInt* DivPlatformT6W28::getChanMacroInt(int ch) {
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return &chan[ch].std;
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}
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DivDispatchOscBuffer* DivPlatformT6W28::getOscBuffer(int ch) {
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return oscBuf[ch];
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}
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unsigned char* DivPlatformT6W28::getRegisterPool() {
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return regPool;
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}
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int DivPlatformT6W28::getRegisterPoolSize() {
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return 112;
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}
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void DivPlatformT6W28::reset() {
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while (!writes.empty()) writes.pop();
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memset(regPool,0,128);
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for (int i=0; i<4; i++) {
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chan[i]=DivPlatformT6W28::Channel();
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chan[i].std.setEngine(parent);
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out[i][0].curValue=0;
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out[i][1].curValue=0;
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out[i][2].curValue=0;
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}
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if (dumpWrites) {
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addWrite(0xffffffff,0);
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}
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t6w->reset();
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lastPan=0xff;
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tempL=0;
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tempR=0;
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cycles=0;
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curChan=-1;
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delay=0;
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// default noise mode
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rWrite(1,0xe7);
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}
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int DivPlatformT6W28::getOutputCount() {
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return 2;
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}
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bool DivPlatformT6W28::keyOffAffectsArp(int ch) {
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return true;
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}
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void DivPlatformT6W28::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 DivPlatformT6W28::setFlags(const DivConfig& flags) {
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chipClock=3072000.0;
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CHECK_CUSTOM_CLOCK;
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rate=chipClock/16;
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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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easyNoise=!flags.getBool("noEasyNoise",false);
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if (t6w!=NULL) {
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delete t6w;
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t6w=NULL;
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}
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t6w=new MDFN_IEN_NGP::T6W28_Apu;
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for (int i=0; i<4; i++) {
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t6w->osc_output(i,&out[i][0],&out[i][1],&out[i][2]);
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}
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}
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void DivPlatformT6W28::poke(unsigned int addr, unsigned short val) {
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rWrite(addr,val);
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}
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void DivPlatformT6W28::poke(std::vector<DivRegWrite>& wlist) {
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for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
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}
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int DivPlatformT6W28::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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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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t6w=NULL;
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setFlags(flags);
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reset();
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return 6;
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}
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void DivPlatformT6W28::quit() {
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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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if (t6w!=NULL) {
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delete t6w;
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t6w=NULL;
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}
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}
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DivPlatformT6W28::~DivPlatformT6W28() {
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}
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