600 lines
16 KiB
C++
600 lines
16 KiB
C++
/**
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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 "sms.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(0x200+a,v);}}}
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const char* regCheatSheetSN[]={
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"DATA", "0",
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NULL
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};
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const char* regCheatSheetGG[]={
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"DATA", "0",
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"Stereo", "1",
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NULL
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};
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const char** DivPlatformSMS::getRegisterSheet() {
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return stereo?regCheatSheetGG:regCheatSheetSN;
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}
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void DivPlatformSMS::acquire_nuked(short* bufL, short* bufR, size_t start, size_t len) {
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int oL=0;
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int oR=0;
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for (size_t h=start; h<start+len; h++) {
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if (!writes.empty()) {
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QueuedWrite w=writes.front();
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if (w.addr==0) {
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YMPSG_Write(&sn_nuked,w.val);
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} else if (w.addr==1) {
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YMPSG_WriteStereo(&sn_nuked,w.val);
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}
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writes.pop();
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}
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_Clock(&sn_nuked);
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YMPSG_GetOutput(&sn_nuked,&oL,&oR);
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if (oL<-32768) oL=-32768;
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if (oL>32767) oL=32767;
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if (oR<-32768) oR=-32768;
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if (oR>32767) oR=32767;
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bufL[h]=oL;
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bufR[h]=oR;
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for (int i=0; i<4; i++) {
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if (isMuted[i]) {
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oscBuf[i]->data[oscBuf[i]->needle++]=0;
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} else {
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oscBuf[i]->data[oscBuf[i]->needle++]=sn_nuked.vol_table[sn_nuked.volume_out[i]]*3;
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}
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}
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}
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}
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void DivPlatformSMS::acquire_mame(short* bufL, short* bufR, size_t start, size_t len) {
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while (!writes.empty()) {
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QueuedWrite w=writes.front();
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if (stereo && (w.addr==1))
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sn->stereo_w(w.val);
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else if (w.addr==0) {
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sn->write(w.val);
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}
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writes.pop();
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}
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for (size_t h=start; h<start+len; h++) {
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short* outs[2]={
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&bufL[h],
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&bufR[h]
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};
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sn->sound_stream_update(outs,1);
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for (int i=0; i<4; i++) {
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if (isMuted[i]) {
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oscBuf[i]->data[oscBuf[i]->needle++]=0;
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} else {
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oscBuf[i]->data[oscBuf[i]->needle++]=sn->get_channel_output(i)*3;
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}
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}
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}
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}
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void DivPlatformSMS::acquire(short* bufL, short* bufR, size_t start, size_t len) {
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if (nuked) {
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acquire_nuked(bufL,bufR,start,len);
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} else {
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acquire_mame(bufL,bufR,start,len);
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}
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}
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double DivPlatformSMS::NOTE_SN(int ch, int note) {
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double CHIP_DIVIDER=toneDivider;
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if (ch==3) CHIP_DIVIDER=noiseDivider;
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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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int easyStartingPeriod=16;
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int easyThreshold=round(12.0*log((chipClock/(easyStartingPeriod*CHIP_DIVIDER))/(0.0625*parent->song.tuning))/log(2.0))-3;
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if (note>easyThreshold) {
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return MAX(0,easyStartingPeriod-(note-easyThreshold));
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}
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return NOTE_PERIODIC(note);
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}
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int DivPlatformSMS::snCalcFreq(int ch) {
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double CHIP_DIVIDER=toneDivider;
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if (ch==3) CHIP_DIVIDER=noiseDivider;
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int easyStartingPeriod=16;
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int easyThreshold=round(128.0*12.0*log((chipClock/(easyStartingPeriod*CHIP_DIVIDER))/(0.0625*parent->song.tuning))/log(2.0))-384+64;
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if (parent->song.linearPitch==2 && easyNoise && chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2>(easyThreshold)) {
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int ret=(((easyStartingPeriod<<7))-(chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2-(easyThreshold)))>>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,true,0,chan[ch].pitch2,chipClock,CHIP_DIVIDER);
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}
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void DivPlatformSMS::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(chan[i].std.vol.val,chan[i].vol,15);
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if (chan[i].outVol<0) chan[i].outVol=0;
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// old formula
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// ((chan[i].vol&15)*MIN(15,chan[i].std.vol.val))>>4;
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chan[i].writeVol=true;
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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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// TODO: add compatibility flag. this is horrible.
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int areYouSerious=parent->calcArp(chan[i].note,chan[i].std.arp.val);
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while (areYouSerious>0x60) areYouSerious-=12;
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chan[i].baseFreq=NOTE_SN(i,areYouSerious);
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chan[i].actualNote=areYouSerious;
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chan[i].freqChanged=true;
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}
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}
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if (i==3) {
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if (chan[i].std.duty.had) {
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if (chan[i].std.duty.val!=snNoiseMode || parent->song.snDutyReset) {
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snNoiseMode=chan[i].std.duty.val;
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if (chan[i].std.duty.val<2) {
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chan[3].freqChanged=false;
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}
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updateSNMode=true;
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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) {
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updateSNMode=true;
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}
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}
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}
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if (stereo) {
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if (chan[i].std.panL.had) {
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lastPan&=~(0x11<<i);
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lastPan|=((chan[i].std.panL.val&1)<<i)|(((chan[i].std.panL.val>>1)&1)<<(i+4));
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rWrite(1,lastPan);
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}
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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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}
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for (int i=0; i<3; i++) {
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if (chan[i].freqChanged) {
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chan[i].freq=snCalcFreq(i);
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if (chan[i].freq>1023) chan[i].freq=1023;
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if (parent->song.snNoLowPeriods) {
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if (chan[i].freq<8) chan[i].freq=1;
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} else {
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if (chan[i].freq<0) chan[i].freq=0;
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}
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//if (chan[i].actualNote>0x5d) chan[i].freq=0x01;
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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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// what?
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/*if (i==2 && snNoiseMode&2) {
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chan[3].baseFreq=chan[2].baseFreq;
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chan[3].actualNote=chan[2].actualNote;
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}*/
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chan[i].freqChanged=false;
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}
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}
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if (chan[3].freqChanged || updateSNMode) {
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chan[3].freq=snCalcFreq(3);
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//parent->calcFreq(chan[3].baseFreq,chan[3].pitch,true,0,chan[3].pitch2,chipClock,noiseDivider);
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if (chan[3].freq>1023) chan[3].freq=1023;
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if (parent->song.snNoLowPeriods) {
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if (chan[3].actualNote>0x5d) chan[3].freq=0x01;
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}
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if (snNoiseMode&2) { // take period from channel 3
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if (updateSNMode || resetPhase) {
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if (snNoiseMode&1) {
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rWrite(0,0xe7);
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} else {
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rWrite(0,0xe3);
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}
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if (updateSNMode) {
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rWrite(0,0xdf);
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}
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}
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if (chan[3].freqChanged) {
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rWrite(0,0xc0|(chan[3].freq&15));
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rWrite(0,chan[3].freq>>4);
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}
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} else { // 3 fixed values
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unsigned char value;
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if (chan[3].std.arp.had) {
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value=parent->calcArp(chan[3].note,chan[3].std.arp.val)%12;
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} else { // pardon?
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value=chan[3].note%12;
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}
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if (value<3) {
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value=2-value;
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if (value!=oldValue || updateSNMode || resetPhase) {
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oldValue=value;
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rWrite(0,0xe0|value|((snNoiseMode&1)<<2));
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}
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}
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}
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chan[3].freqChanged=false;
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updateSNMode=false;
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}
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for (int i=0; i<4; i++) {
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if (chan[i].writeVol) {
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rWrite(0,0x90|(i<<5)|(isMuted[i]?15:(15-(chan[i].outVol&15))));
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chan[i].writeVol=false;
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}
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}
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}
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int DivPlatformSMS::dispatch(DivCommand c) {
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switch (c.cmd) {
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case DIV_CMD_NOTE_ON:
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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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chan[c.chan].actualNote=c.value;
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}
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chan[c.chan].active=true;
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//if (!parent->song.brokenOutVol2) {
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chan[c.chan].writeVol=true;
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chan[c.chan].outVol=chan[c.chan].vol;
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//rWrite(0,0x90|c.chan<<5|(isMuted[c.chan]?15:(15-(chan[c.chan].vol&15))));
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//}
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chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_STD));
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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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case DIV_CMD_NOTE_OFF:
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chan[c.chan].active=false;
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rWrite(0,0x9f|c.chan<<5);
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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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chan[c.chan].ins=c.value;
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//chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_STD));
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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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}
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if (chan[c.chan].active) {
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chan[c.chan].writeVol=true;
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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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snNoiseMode=(c.value&1)|((c.value&16)>>3);
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updateSNMode=true;
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break;
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case DIV_CMD_PANNING: {
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if (stereo) {
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if (c.chan>3) c.chan=3;
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lastPan&=~(0x11<<c.chan);
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int pan=0;
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if (c.value>0) pan|=0x10;
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if (c.value2>0) pan|=0x01;
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if (pan==0) pan=0x11;
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lastPan|=pan<<c.chan;
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rWrite(1,lastPan);
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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_SN(c.chan,c.value+((chan[c.chan].std.arp.will && !chan[c.chan].std.arp.mode)?(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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chan[c.chan].actualNote=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_STD));
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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_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_ALWAYS_SET_VOLUME:
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return 0;
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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 DivPlatformSMS::muteChannel(int ch, bool mute) {
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isMuted[ch]=mute;
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if (chan[ch].active) chan[ch].writeVol=true;
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}
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void DivPlatformSMS::forceIns() {
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for (int i=0; i<4; i++) {
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if (chan[i].active) {
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chan[i].insChanged=true;
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chan[i].freqChanged=true;
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}
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}
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updateSNMode=true;
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}
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void* DivPlatformSMS::getChanState(int ch) {
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return &chan[ch];
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}
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DivMacroInt* DivPlatformSMS::getChanMacroInt(int ch) {
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return &chan[ch].std;
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}
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DivDispatchOscBuffer* DivPlatformSMS::getOscBuffer(int ch) {
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return oscBuf[ch];
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}
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void DivPlatformSMS::reset() {
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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]=DivPlatformSMS::Channel();
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chan[i].std.setEngine(parent);
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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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sn->device_start();
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YMPSG_Init(&sn_nuked,isRealSN,12,isRealSN?13:15,isRealSN?16383:32767);
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snNoiseMode=3;
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rWrite(0,0xe7);
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updateSNMode=true;
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oldValue=0xff;
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lastPan=0xff;
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if (stereo) {
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rWrite(1,0xff);
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}
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}
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bool DivPlatformSMS::isStereo() {
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return stereo;
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}
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bool DivPlatformSMS::keyOffAffectsArp(int ch) {
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return true;
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}
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bool DivPlatformSMS::keyOffAffectsPorta(int ch) {
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return true;
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}
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int DivPlatformSMS::getPortaFloor(int ch) {
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return 12;
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}
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void DivPlatformSMS::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 DivPlatformSMS::poke(unsigned int addr, unsigned short val) {
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rWrite(addr,val);
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}
|
|
|
|
void DivPlatformSMS::poke(std::vector<DivRegWrite>& wlist) {
|
|
for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
|
|
}
|
|
|
|
void DivPlatformSMS::setFlags(const DivConfig& flags) {
|
|
switch (flags.getInt("clockSel",0)) {
|
|
case 1:
|
|
chipClock=COLOR_PAL*4.0/5.0;
|
|
break;
|
|
case 2:
|
|
chipClock=4000000;
|
|
break;
|
|
case 3:
|
|
chipClock=COLOR_NTSC/2.0;
|
|
break;
|
|
case 4:
|
|
chipClock=3000000;
|
|
break;
|
|
case 5:
|
|
chipClock=2000000;
|
|
break;
|
|
case 6:
|
|
chipClock=COLOR_NTSC/8.0;
|
|
break;
|
|
default:
|
|
chipClock=COLOR_NTSC;
|
|
break;
|
|
}
|
|
CHECK_CUSTOM_CLOCK;
|
|
resetPhase=!flags.getBool("noPhaseReset",false);
|
|
easyNoise=!flags.getBool("noEasyNoise",false);
|
|
divider=16;
|
|
toneDivider=64.0;
|
|
noiseDivider=64.0;
|
|
if (sn!=NULL) delete sn;
|
|
switch (flags.getInt("chipType",0)) {
|
|
case 1: // TI SN76489
|
|
sn=new sn76489_device();
|
|
isRealSN=true;
|
|
stereo=false;
|
|
noiseDivider=60.0; // 64 for match to tone frequency on non-Sega PSG but compatibility
|
|
break;
|
|
case 2: // TI+Atari
|
|
sn=new sn76496_base_device(0x4000, 0x0f35, 0x01, 0x02, true, false, 1/*8*/, false, true);
|
|
isRealSN=true;
|
|
stereo=false;
|
|
noiseDivider=60.0;
|
|
break;
|
|
case 3: // Game Gear (not fully emulated yet!)
|
|
sn=new gamegear_device();
|
|
isRealSN=false;
|
|
stereo=true;
|
|
break;
|
|
case 4: // TI SN76489A
|
|
sn=new sn76489a_device();
|
|
isRealSN=false; // TODO
|
|
stereo=false;
|
|
noiseDivider=60.0;
|
|
break;
|
|
case 5: // TI SN76496
|
|
sn=new sn76496_device();
|
|
isRealSN=false; // TODO
|
|
stereo=false;
|
|
noiseDivider=60.0;
|
|
break;
|
|
case 6: // NCR 8496
|
|
sn=new ncr8496_device();
|
|
isRealSN=false;
|
|
stereo=false;
|
|
noiseDivider=60.0;
|
|
break;
|
|
case 7: // Tandy PSSJ 3-voice sound
|
|
sn=new pssj3_device();
|
|
isRealSN=false;
|
|
stereo=false;
|
|
noiseDivider=60.0;
|
|
break;
|
|
case 8: // TI SN94624
|
|
sn=new sn94624_device();
|
|
isRealSN=true;
|
|
stereo=false;
|
|
divider=2;
|
|
toneDivider=8.0;
|
|
noiseDivider=7.5;
|
|
break;
|
|
case 9: // TI SN76494
|
|
sn=new sn76494_device();
|
|
isRealSN=false; // TODO
|
|
stereo=false;
|
|
divider=2;
|
|
toneDivider=8.0;
|
|
noiseDivider=7.5;
|
|
break;
|
|
default: // Sega
|
|
sn=new segapsg_device();
|
|
isRealSN=false;
|
|
stereo=false;
|
|
break;
|
|
}
|
|
|
|
rate=chipClock/divider;
|
|
for (int i=0; i<4; i++) {
|
|
oscBuf[i]->rate=rate;
|
|
}
|
|
}
|
|
|
|
void DivPlatformSMS::setNuked(bool value) {
|
|
nuked=value;
|
|
}
|
|
|
|
int DivPlatformSMS::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
|
|
parent=p;
|
|
dumpWrites=false;
|
|
skipRegisterWrites=false;
|
|
resetPhase=false;
|
|
oldValue=0xff;
|
|
lastPan=0xff;
|
|
for (int i=0; i<4; i++) {
|
|
isMuted[i]=false;
|
|
oscBuf[i]=new DivDispatchOscBuffer;
|
|
}
|
|
sn=NULL;
|
|
setFlags(flags);
|
|
reset();
|
|
return 4;
|
|
}
|
|
|
|
void DivPlatformSMS::quit() {
|
|
for (int i=0; i<4; i++) {
|
|
delete oscBuf[i];
|
|
}
|
|
if (sn!=NULL) delete sn;
|
|
}
|
|
|
|
DivPlatformSMS::~DivPlatformSMS() {
|
|
}
|