diff --git a/src/engine/platform/saa.cpp b/src/engine/platform/saa.cpp index 0a30e241..1cd467c9 100644 --- a/src/engine/platform/saa.cpp +++ b/src/engine/platform/saa.cpp @@ -4,15 +4,14 @@ #include #include -#define rWrite(a,v) if (!skipRegisterWrites) {pendingWrites[a]=v;} -#define immWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v);} +#define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v);} -#define PSG_FREQ_BASE 6848.0f +#define PSG_FREQ_BASE 122240.0f void DivPlatformSAA1099::acquire(short* bufL, short* bufR, size_t start, size_t len) { if (ayBufLencalcFreq(chan[i].baseFreq,chan[i].pitch,true); + if (chan[i].freq>=32768) { + chan[i].freqH=7; + } else if (chan[i].freq>=16384) { + chan[i].freqH=6; + } else if (chan[i].freq>=8192) { + chan[i].freqH=5; + } else if (chan[i].freq>=4096) { + chan[i].freqH=4; + } else if (chan[i].freq>=2048) { + chan[i].freqH=3; + } else if (chan[i].freq>=1024) { + chan[i].freqH=2; + } else if (chan[i].freq>=512) { + chan[i].freqH=1; + } else { + chan[i].freqH=0; + } + chan[i].freqL=0xff-(chan[i].freq>>chan[i].freqH); + chan[i].freqH=7-chan[i].freqH; if (chan[i].freq>4095) chan[i].freq=4095; if (chan[i].keyOn) { //rWrite(16+i*5+1,((chan[i].duty&3)<<6)|(63-(ins->gb.soundLen&63))); //rWrite(16+i*5+2,((chan[i].vol<<4))|(ins->gb.envLen&7)|((ins->gb.envDir&1)<<3)); } if (chan[i].keyOff) { - rWrite(0x08+i,0); + rWrite(i,0); } - rWrite((i)<<1,chan[i].freq&0xff); - rWrite(1+((i)<<1),chan[i].freq>>8); + rWrite(0x08+i,chan[i].freqL); + rWrite(0x10+(i>>1),chan[i&2].freqH|(chan[1+(i&2)].freqH<<4)); if (chan[i].keyOn) chan[i].keyOn=false; if (chan[i].keyOff) chan[i].keyOff=false; chan[i].freqChanged=false; } } - rWrite(0x07, - ~((chan[0].psgMode&1)| - ((chan[1].psgMode&1)<<1)| - ((chan[2].psgMode&1)<<2)| - ((chan[0].psgMode&2)<<2)| - ((chan[1].psgMode&2)<<3)| - ((chan[2].psgMode&2)<<4))); + rWrite(0x14,(chan[0].psgMode&1)| + ((chan[1].psgMode&1)<<1)| + ((chan[2].psgMode&1)<<2)| + ((chan[3].psgMode&1)<<3)| + ((chan[4].psgMode&1)<<4)| + ((chan[5].psgMode&1)<<5) + ); + + rWrite(0x15,((chan[0].psgMode&2)>>1)| + (chan[1].psgMode&2)| + ((chan[2].psgMode&2)<<1)| + ((chan[3].psgMode&2)<<2)| + ((chan[4].psgMode&2)<<3)| + ((chan[5].psgMode&2)<<4) + ); if (ayEnvSlide!=0) { ayEnvSlideLow+=ayEnvSlide; @@ -97,26 +122,19 @@ void DivPlatformSAA1099::tick() { ayEnvSlideLow-=8; if (ayEnvPeriod<0xffff) { ayEnvPeriod++; - immWrite(0x0b,ayEnvPeriod); - immWrite(0x0c,ayEnvPeriod>>8); + rWrite(0x0b,ayEnvPeriod); + rWrite(0x0c,ayEnvPeriod>>8); } } while (ayEnvSlideLow<-7) { ayEnvSlideLow+=8; if (ayEnvPeriod>0) { ayEnvPeriod--; - immWrite(0x0b,ayEnvPeriod); - immWrite(0x0c,ayEnvPeriod>>8); + rWrite(0x0b,ayEnvPeriod); + rWrite(0x0c,ayEnvPeriod>>8); } } } - - for (int i=0; i<16; i++) { - if (pendingWrites[i]!=oldWrites[i]) { - immWrite(i,pendingWrites[i]&0xff); - oldWrites[i]=pendingWrites[i]; - } - } } int DivPlatformSAA1099::dispatch(DivCommand c) { @@ -130,9 +148,9 @@ int DivPlatformSAA1099::dispatch(DivCommand c) { chan[c.chan].keyOn=true; chan[c.chan].std.init(ins); if (isMuted[c.chan]) { - rWrite(0x08+c.chan,0); + rWrite(c.chan,0); } else { - rWrite(0x08+c.chan,(chan[c.chan].vol&15)|((chan[c.chan].psgMode&4)<<2)); + rWrite(c.chan,(chan[c.chan].vol&15)); } break; } @@ -147,9 +165,9 @@ int DivPlatformSAA1099::dispatch(DivCommand c) { chan[c.chan].outVol=c.value; } if (isMuted[c.chan]) { - rWrite(0x08+c.chan,0); + rWrite(c.chan,0); } else { - if (chan[c.chan].active) rWrite(0x08+c.chan,(chan[c.chan].vol&15)|((chan[c.chan].psgMode&4)<<2)); + if (chan[c.chan].active) rWrite(c.chan,(chan[c.chan].vol&15)); } break; break; @@ -208,23 +226,18 @@ int DivPlatformSAA1099::dispatch(DivCommand c) { } else { chan[c.chan].psgMode&=~4; } - if (isMuted[c.chan]) { - rWrite(0x08+c.chan,0); - } else { - rWrite(0x08+c.chan,(chan[c.chan].vol&15)|((chan[c.chan].psgMode&4)<<2)); - } break; case DIV_CMD_AY_ENVELOPE_LOW: ayEnvPeriod&=0xff00; ayEnvPeriod|=c.value; - immWrite(0x0b,ayEnvPeriod); - immWrite(0x0c,ayEnvPeriod>>8); + rWrite(0x0b,ayEnvPeriod); + rWrite(0x0c,ayEnvPeriod>>8); break; case DIV_CMD_AY_ENVELOPE_HIGH: ayEnvPeriod&=0xff; ayEnvPeriod|=c.value<<8; - immWrite(0x0b,ayEnvPeriod); - immWrite(0x0c,ayEnvPeriod>>8); + rWrite(0x0b,ayEnvPeriod); + rWrite(0x0c,ayEnvPeriod>>8); break; case DIV_CMD_AY_ENVELOPE_SLIDE: ayEnvSlide=c.value; @@ -251,9 +264,9 @@ int DivPlatformSAA1099::dispatch(DivCommand c) { void DivPlatformSAA1099::muteChannel(int ch, bool mute) { isMuted[ch]=mute; if (isMuted[ch]) { - rWrite(0x08+ch,0); + rWrite(ch,0); } else { - rWrite(0x08+ch,(chan[ch].outVol&15)|((chan[ch].psgMode&4)<<2)); + rWrite(ch,(chan[ch].outVol&15)); } } @@ -261,24 +274,19 @@ void DivPlatformSAA1099::forceIns() { for (int i=0; i<3; i++) { chan[i].insChanged=true; } - immWrite(0x0b,ayEnvPeriod); - immWrite(0x0c,ayEnvPeriod>>8); - immWrite(0x0d,ayEnvMode); + rWrite(0x0b,ayEnvPeriod); + rWrite(0x0c,ayEnvPeriod>>8); + rWrite(0x0d,ayEnvMode); } void DivPlatformSAA1099::reset() { while (!writes.empty()) writes.pop(); saa=saa1099_device(); - for (int i=0; i<3; i++) { + for (int i=0; i<6; i++) { chan[i]=DivPlatformSAA1099::Channel(); chan[i].vol=0x0f; } - for (int i=0; i<16; i++) { - oldWrites[i]=-1; - pendingWrites[i]=-1; - } - lastBusy=60; dacMode=0; dacPeriod=0; @@ -294,10 +302,12 @@ void DivPlatformSAA1099::reset() { delay=0; extMode=false; + + rWrite(0x1c,1); } bool DivPlatformSAA1099::isStereo() { - return false; + return true; } bool DivPlatformSAA1099::keyOffAffectsArp(int ch) { @@ -305,7 +315,7 @@ bool DivPlatformSAA1099::keyOffAffectsArp(int ch) { } void DivPlatformSAA1099::notifyInsDeletion(void* ins) { - for (int i=0; i<3; i++) { + for (int i=0; i<6; i++) { chan[i].std.notifyInsDeletion((DivInstrument*)ins); } } @@ -321,16 +331,16 @@ void DivPlatformSAA1099::setPAL(bool pal) { int DivPlatformSAA1099::init(DivEngine* p, int channels, int sugRate, bool pal) { parent=p; skipRegisterWrites=false; - for (int i=0; i<3; i++) { + for (int i=0; i<6; i++) { isMuted[i]=false; } setPAL(pal); ayBufLen=65536; - for (int i=0; i<3; i++) ayBuf[i]=new short[ayBufLen]; + for (int i=0; i<2; i++) ayBuf[i]=new short[ayBufLen]; reset(); return 3; } void DivPlatformSAA1099::quit() { - for (int i=0; i<3; i++) delete[] ayBuf[i]; + for (int i=0; i<2; i++) delete[] ayBuf[i]; } \ No newline at end of file diff --git a/src/engine/platform/saa.h b/src/engine/platform/saa.h index 4a685acf..ff822911 100644 --- a/src/engine/platform/saa.h +++ b/src/engine/platform/saa.h @@ -16,10 +16,10 @@ class DivPlatformSAA1099: public DivDispatch { int vol, outVol; unsigned char pan; DivMacroInt std; - Channel(): freqH(0), freqL(0), freq(0), baseFreq(0), pitch(0), ins(-1), note(0), psgMode(1), active(false), insChanged(true), freqChanged(false), keyOn(false), keyOff(false), portaPause(false), inPorta(false), vol(0), outVol(15), pan(3) {} + Channel(): freqH(0), freqL(0), freq(0), baseFreq(0), pitch(0), ins(-1), note(0), psgMode(1), active(false), insChanged(true), freqChanged(false), keyOn(false), keyOff(false), portaPause(false), inPorta(false), vol(0), outVol(15), pan(255) {} }; - Channel chan[3]; - bool isMuted[3]; + Channel chan[6]; + bool isMuted[6]; struct QueuedWrite { unsigned short addr; unsigned char val; @@ -47,7 +47,7 @@ class DivPlatformSAA1099: public DivDispatch { unsigned short ayEnvPeriod; short ayEnvSlideLow; short ayEnvSlide; - short* ayBuf[3]; + short* ayBuf[2]; size_t ayBufLen; public: diff --git a/src/engine/platform/sound/saa1099.cpp b/src/engine/platform/sound/saa1099.cpp index 01c96dd8..24f09f6a 100644 --- a/src/engine/platform/sound/saa1099.cpp +++ b/src/engine/platform/sound/saa1099.cpp @@ -72,16 +72,16 @@ #define BIT(x,n) (((x)>>(n))&1) -static constexpr int clock_divider = 256; +static constexpr int clock_divider = 32; static constexpr int LEFT = 0x00; static constexpr int RIGHT = 0x01; static constexpr unsigned short amplitude_lookup[16] = { - 0*32767/16, 1*32767/16, 2*32767/16, 3*32767/16, - 4*32767/16, 5*32767/16, 6*32767/16, 7*32767/16, - 8*32767/16, 9*32767/16, 10*32767/16, 11*32767/16, - 12*32767/16, 13*32767/16, 14*32767/16, 15*32767/16 + 0*32767/96, 1*32767/96, 2*32767/96, 3*32767/96, + 4*32767/96, 5*32767/96, 6*32767/96, 7*32767/96, + 8*32767/96, 9*32767/96, 10*32767/96, 11*32767/96, + 12*32767/96, 13*32767/96, 14*32767/96, 15*32767/96 }; static constexpr unsigned char envelope[8][64] = {