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many fixes to NES system playback
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parent
3286c3c0c5
commit
6599eb4f7e
3 changed files with 23 additions and 17 deletions
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@ -37,14 +37,14 @@ static int dacRates[6]={
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};
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static unsigned char noiseTable[256]={
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6,
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4,
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15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4,
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15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4,
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3, 2, 1, 0, 12, 11, 10, 9, 8, 7, 6, 5, 4,
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3, 2, 1, 0, 11, 10, 9, 8, 7, 6, 5, 4,
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15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4,
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3, 2, 1, 0, 12, 11, 10, 9, 8, 7, 6, 5, 4,
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3, 2, 1, 0, 11, 10, 9, 8, 7, 6, 5, 4,
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15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4,
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3, 2, 1, 0, 12, 11, 10, 9, 8, 7, 6, 5, 4,
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3, 2, 1, 0, 11, 10, 9, 8, 7, 6, 5, 4,
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15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
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15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
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15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
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@ -65,9 +65,12 @@ void DivPlatformNES::tick() {
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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.hadVol) {
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chan[i].outVol=(chan[i].vol*chan[i].std.vol)/15;
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// ok, why are the volumes like that?
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chan[i].outVol=chan[i].std.vol-(15-chan[i].vol);
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if (chan[i].outVol<0) chan[i].outVol=0;
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if (i==2) { // triangle
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apu_wr_reg(0x4000+i*4,(chan[i].outVol==0)?0:255);
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chan[i].freqChanged=true;
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} else {
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apu_wr_reg(0x4000+i*4,0x30|chan[i].outVol|((chan[i].duty&3)<<6));
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}
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@ -84,7 +87,7 @@ void DivPlatformNES::tick() {
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} else {
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if (!chan[i].inPorta) {
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if (chan[i].std.arpMode) {
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chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp+24)/12.0f)));
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chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
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} else {
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chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].note+chan[i].std.arp-12)/12.0f)));
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}
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@ -103,13 +106,8 @@ void DivPlatformNES::tick() {
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if (i!=2) {
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apu_wr_reg(0x4000+i*4,0x30|chan[i].outVol|((chan[i].duty&3)<<6));
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}
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}
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if (chan[i].std.hadWave) {
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if (chan[i].wave!=chan[i].std.wave) {
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chan[i].wave=chan[i].std.wave;
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if (i==2) {
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if (!chan[i].keyOff) chan[i].keyOn=true;
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}
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if (i==3) { // noise
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chan[i].freqChanged=true;
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}
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}
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if (chan[i].sweepChanged) {
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@ -126,7 +124,6 @@ void DivPlatformNES::tick() {
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chan[i].freq=(chan[i].baseFreq*(ONE_SEMITONE-chan[i].pitch))/ONE_SEMITONE;
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if (chan[i].freq>2047) chan[i].freq=2047;
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}
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if (chan[i].note>0x5d) chan[i].freq=0x01;
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if (chan[i].keyOn) {
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//rWrite(16+i*5+1,((chan[i].duty&3)<<6)|(63-(ins->gb.soundLen&63)));
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//rWrite(16+i*5+2,((chan[i].vol<<4))|(ins->gb.envLen&7)|((ins->gb.envDir&1)<<3));
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@ -140,7 +137,7 @@ void DivPlatformNES::tick() {
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}
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}
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if (i==3) { // noise
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apu_wr_reg(0x4002+i*4,chan[i].freq);
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apu_wr_reg(0x4002+i*4,(chan[i].duty<<7)|chan[i].freq);
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apu_wr_reg(0x4003+i*4,0xf0);
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} else {
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apu_wr_reg(0x4002+i*4,chan[i].freq&0xff);
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@ -240,7 +237,7 @@ int DivPlatformNES::dispatch(DivCommand c) {
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}
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case DIV_CMD_STD_NOISE_MODE:
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chan[c.chan].duty=c.value;
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if (c.chan!=2) {
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if (c.chan==3) { // noise
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chan[c.chan].freqChanged=true;
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}
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break;
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@ -15,7 +15,7 @@ class DivPlatformNES: public DivDispatch {
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freq(0),
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baseFreq(0),
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pitch(0),
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prevFreq(-1),
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prevFreq(65535),
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ins(-1),
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note(0),
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duty(0),
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@ -133,6 +133,15 @@ bool DivEngine::perSystemEffect(int ch, unsigned char effect, unsigned char effe
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return false;
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}
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break;
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case DIV_SYSTEM_NES:
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switch (effect) {
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case 0x12: // duty or noise mode
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dispatchCmd(DivCommand(DIV_CMD_STD_NOISE_MODE,ch,effectVal));
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break;
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default:
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return false;
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}
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break;
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default:
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return false;
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}
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