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it plays notes

This commit is contained in:
tildearrow 2022-01-14 18:19:52 -05:00
parent 740521b469
commit e05db17ce2
3 changed files with 79 additions and 69 deletions
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130
src/engine/platform/saa.cpp
View File

@ -4,15 +4,14 @@
#include <string.h>
#include <math.h>
#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 (ayBufLen<len) {
ayBufLen=len;
for (int i=0; i<3; i++) {
for (int i=0; i<2; i++) {
delete[] ayBuf[i];
ayBuf[i]=new short[ayBufLen];
}
@ -25,22 +24,21 @@ void DivPlatformSAA1099::acquire(short* bufL, short* bufR, size_t start, size_t
}
saa.sound_stream_update(ayBuf,len);
for (size_t i=0; i<len; i++) {
bufL[i+start]=ayBuf[0][i]+ayBuf[1][i]+ayBuf[2][i];
bufR[i+start]=ayBuf[0][i]+ayBuf[1][i]+ayBuf[2][i];
bufL[i+start]=ayBuf[0][i];
bufR[i+start]=ayBuf[1][i];
}
}
void DivPlatformSAA1099::tick() {
// PSG
for (int i=0; i<3; i++) {
for (int i=0; i<6; i++) {
chan[i].std.next();
if (chan[i].std.hadVol) {
chan[i].outVol=chan[i].std.vol-(15-chan[i].vol);
if (chan[i].outVol<0) chan[i].outVol=0;
if (isMuted[i]) {
rWrite(0x08+i,0);
rWrite(i,0);
} else {
rWrite(0x08+i,(chan[i].outVol&15)|((chan[i].psgMode&4)<<2));
rWrite(i,(chan[i].outVol&15));
}
}
if (chan[i].std.hadArp) {
@ -67,29 +65,56 @@ void DivPlatformSAA1099::tick() {
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
chan[i].freq=parent->calcFreq(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];
}

8
src/engine/platform/saa.h
View File

@ -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:

10
src/engine/platform/sound/saa1099.cpp
View File

@ -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] = {