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C64: dSID core, part 1

This commit is contained in:
tildearrow 2023-07-05 17:09:02 -05:00
parent 56b786f55e
commit 621616ae25
9 changed files with 235 additions and 200 deletions
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2
CMakeLists.txt
View File

@ -455,6 +455,8 @@ src/engine/platform/sound/c64_fp/WaveformCalculator.cpp
src/engine/platform/sound/c64_fp/WaveformGenerator.cpp
src/engine/platform/sound/c64_fp/resample/SincResampler.cpp
src/engine/platform/sound/c64_d/dsid.c
src/engine/platform/sound/tia/AudioChannel.cpp
src/engine/platform/sound/tia/Audio.cpp

4
src/engine/dispatchContainer.cpp
View File

@ -273,12 +273,12 @@ void DivDispatchContainer::init(DivSystem sys, DivEngine* eng, int chanCount, do
break;
case DIV_SYSTEM_C64_6581:
dispatch=new DivPlatformC64;
((DivPlatformC64*)dispatch)->setFP(eng->getConfInt("c64Core",1)==1);
((DivPlatformC64*)dispatch)->setCore(eng->getConfInt("c64Core",0));
((DivPlatformC64*)dispatch)->setChipModel(true);
break;
case DIV_SYSTEM_C64_8580:
dispatch=new DivPlatformC64;
((DivPlatformC64*)dispatch)->setFP(eng->getConfInt("c64Core",1)==1);
((DivPlatformC64*)dispatch)->setCore(eng->getConfInt("c64Core",0));
((DivPlatformC64*)dispatch)->setChipModel(false);
break;
case DIV_SYSTEM_YM2151:

58
src/engine/platform/c64.cpp
View File

@ -65,19 +65,29 @@ const char** DivPlatformC64::getRegisterSheet() {
}
void DivPlatformC64::acquire(short** buf, size_t len) {
int dcOff=isFP?0:sid.get_dc(0);
int dcOff=(sidCore)?0:sid.get_dc(0);
for (size_t i=0; i<len; i++) {
if (!writes.empty()) {
QueuedWrite w=writes.front();
if (isFP) {
if (sidCore==2) {
dSID_write(sid_d,w.addr,w.val);
} else if (sidCore==1) {
sid_fp.write(w.addr,w.val);
} else {
sid.write(w.addr,w.val);
};
}
regPool[w.addr&0x1f]=w.val;
writes.pop();
}
if (isFP) {
if (sidCore==2) {
buf[0][i]=32767.0*dSID_render(sid_d);
if (++writeOscBuf>=4) {
writeOscBuf=0;
oscBuf[0]->data[oscBuf[0]->needle++]=sid_d->lastOut[0];
oscBuf[1]->data[oscBuf[1]->needle++]=sid_d->lastOut[1];
oscBuf[2]->data[oscBuf[2]->needle++]=sid_d->lastOut[2];
}
} else if (sidCore==1) {
sid_fp.clock(4,&buf[0][i]);
if (++writeOscBuf>=4) {
writeOscBuf=0;
@ -452,7 +462,14 @@ int DivPlatformC64::dispatch(DivCommand c) {
void DivPlatformC64::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
if (isFP) {
if (sidCore==2) {
dSID_setMuteMask(
sid_d,
(isMuted[0]?1:0)|
(isMuted[1]?2:0)|
(isMuted[2]?4:0)
);
} else if (sidCore==1) {
sid_fp.mute(ch,mute);
} else {
sid.set_is_muted(ch,mute);
@ -514,7 +531,7 @@ bool DivPlatformC64::getWantPreNote() {
}
float DivPlatformC64::getPostAmp() {
return isFP?3.0f:1.0f;
return (sidCore==1)?3.0f:1.0f;
}
void DivPlatformC64::reset() {
@ -524,7 +541,9 @@ void DivPlatformC64::reset() {
chan[i].std.setEngine(parent);
}
if (isFP) {
if (sidCore==2) {
dSID_init(sid_d,chipClock,rate,sidIs6581?6581:8580,1);
} else if (sidCore==1) {
sid_fp.reset();
sid_fp.clockSilent(16000);
} else {
@ -555,22 +574,27 @@ void DivPlatformC64::poke(std::vector<DivRegWrite>& wlist) {
void DivPlatformC64::setChipModel(bool is6581) {
if (is6581) {
if (isFP) {
if (sidCore==2) {
// do nothing
} else if (sidCore==1) {
sid_fp.setChipModel(reSIDfp::MOS6581);
} else {
sid.set_chip_model(MOS6581);
}
} else {
if (isFP) {
if (sidCore==2) {
// do nothing
} else if (sidCore==1) {
sid_fp.setChipModel(reSIDfp::MOS8580);
} else {
sid.set_chip_model(MOS8580);
}
}
sidIs6581=is6581;
}
void DivPlatformC64::setFP(bool fp) {
isFP=fp;
void DivPlatformC64::setCore(unsigned char which) {
sidCore=which;
}
void DivPlatformC64::setFlags(const DivConfig& flags) {
@ -591,9 +615,9 @@ void DivPlatformC64::setFlags(const DivConfig& flags) {
for (int i=0; i<3; i++) {
oscBuf[i]->rate=rate/16;
}
if (isFP) {
if (sidCore>0) {
rate/=4;
sid_fp.setSamplingParameters(chipClock,reSIDfp::DECIMATE,rate,0);
if (sidCore==1) sid_fp.setSamplingParameters(chipClock,reSIDfp::DECIMATE,rate,0);
}
keyPriority=flags.getBool("keyPriority",true);
testAD=((flags.getInt("testAttack",0)&15)<<4)|(flags.getInt("testDecay",0)&15);
@ -609,6 +633,13 @@ int DivPlatformC64::init(DivEngine* p, int channels, int sugRate, const DivConfi
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
if (sidCore==2) {
sid_d=new struct SID_chip;
} else {
sid_d=NULL;
}
setFlags(flags);
reset();
@ -620,6 +651,7 @@ void DivPlatformC64::quit() {
for (int i=0; i<3; i++) {
delete oscBuf[i];
}
if (sid_d!=NULL) delete sid_d;
}
DivPlatformC64::~DivPlatformC64() {

8
src/engine/platform/c64.h
View File

@ -24,6 +24,7 @@
#include <queue>
#include "sound/c64/sid.h"
#include "sound/c64_fp/SID.h"
#include "sound/c64_d/dsid.h"
class DivPlatformC64: public DivDispatch {
struct Channel: public SharedChannel<signed char> {
@ -64,15 +65,16 @@ class DivPlatformC64: public DivDispatch {
unsigned char filtControl, filtRes, vol;
unsigned char writeOscBuf;
unsigned char sidCore;
int filtCut, resetTime;
bool isFP;
bool keyPriority;
bool keyPriority, sidIs6581;
unsigned char chanOrder[3];
unsigned char testAD, testSR;
SID sid;
reSIDfp::SID sid_fp;
struct SID_chip* sid_d;
unsigned char regPool[32];
friend void putDispatchChip(void*,int);
@ -105,7 +107,7 @@ class DivPlatformC64: public DivDispatch {
const char** getRegisterSheet();
int init(DivEngine* parent, int channels, int sugRate, const DivConfig& flags);
void setChipModel(bool is6581);
void setFP(bool fp);
void setCore(unsigned char which);
void quit();
~DivPlatformC64();
};

294
src/engine/platform/sound/c64_d/dsid.c
View File

@ -3,11 +3,30 @@
#include <stdlib.h>
#include <string.h> // memset, memcpy
// defle internals
void waveforms_add_sample(uint8_t id, int16_t left, int16_t right);
#define SID_OUT_SCALE (0x10000 * 3 * 16)
struct SID_chip sid;
static char init_wf = 1;
// CONTROL
#define GAT 0x01
#define SYN 0x02
#define RNG 0x04
#define TST 0x08
#define TRI 0x10
#define SAW 0x20
#define PUL 0x40
#define NOI 0x80
#define _HZ 0x10
#define DECSUS 0x40
#define ATK 0x80
// filter mode (high)
#define LP 0x10
#define BP 0x20
#define HP 0x40
#define OFF3 0x80
#define waveforms_add_sample(_id,_s) \
sid->lastOut[_id]=(_s);
const int Aexp[256] = {
1, 30, 30, 30, 30, 30, 30, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
@ -22,7 +41,7 @@ const int Aexp[256] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
double cmbWF(int chn, int *wfa, int index, int differ6581, struct SID_globals *g) {
if (differ6581 && sid.g.model == 6581)
if (differ6581 && g->model == 6581)
index &= 0x7FF;
return wfa[index];
@ -42,60 +61,53 @@ void cCmbWF(int *wfa, double bitmul, double bstr, double trh) {
}
}
void dSID_init(double samplingRate, int model) {
void dSID_init(struct SID_chip* sid, double clockRate, double samplingRate, int model, unsigned char init_wf) {
if (model == 6581) {
sid.g.model = 6581;
sid->g.model = 6581;
} else {
sid.g.model = 8580;
sid->g.model = 8580;
}
// SID area
for (int i = 0xD400; i <= 0xD7FF; i++)
sid.M[i] = 0;
// IO area
for (int i = 0xDE00; i <= 0xDFFF; i++)
sid.M[i] = 0;
memset(sid.SIDct, 0, sizeof(sid.SIDct));
memset(sid->M,0,MemLen);
memset(sid->SIDct, 0, sizeof(sid->SIDct));
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
sid.SIDct[i].ch[j].Ast = _HZ;
sid.SIDct[i].ch[j].nLFSR = 0x7FFFF8;
sid.SIDct[i].ch[j].prevwfout = 0;
sid->SIDct[i].ch[j].Ast = _HZ;
sid->SIDct[i].ch[j].nLFSR = 0x7FFFF8;
sid->SIDct[i].ch[j].prevwfout = 0;
}
sid.SIDct[i].ch[0].FSW = 1;
sid.SIDct[i].ch[1].FSW = 2;
sid.SIDct[i].ch[2].FSW = 4;
sid->SIDct[i].ch[0].FSW = 1;
sid->SIDct[i].ch[1].FSW = 2;
sid->SIDct[i].ch[2].FSW = 4;
}
sid.g.ctfr = -2.0 * 3.14 * (12500.0 / 256.0) / samplingRate,
sid.g.ctf_ratio_6581 = -2.0 * 3.14 * (20000.0 / 256.0) / samplingRate;
sid.g.ckr = (double) SID_CLK / samplingRate;
sid->g.ctfr = -2.0 * 3.14 * (12500.0 / 256.0) / samplingRate,
sid->g.ctf_ratio_6581 = -2.0 * 3.14 * (20000.0 / 256.0) / samplingRate;
sid->g.ckr = clockRate / samplingRate;
const double bAprd[16] = {9, 32 * 1, 63 * 1, 95 * 1, 149 * 1, 220 * 1,
267 * 1, 313 * 1, 392 * 1, 977 * 1, 1954 * 1, 3126 * 1,
3907 * 1, 11720 * 1, 19532 * 1, 31251 * 1};
const int bAstp[16] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
memcpy(&sid.g.Aprd, &bAprd, sizeof(bAprd));
memcpy(&sid.g.Astp, &bAstp, sizeof(bAstp));
memcpy(&sid->g.Aprd, &bAprd, sizeof(bAprd));
memcpy(&sid->g.Astp, &bAstp, sizeof(bAstp));
if (init_wf) {
cCmbWF(sid.g.trsaw, 0.8, 2.4, 0.64);
cCmbWF(sid.g.pusaw, 1.4, 1.9, 0.68);
cCmbWF(sid.g.Pulsetrsaw, 0.8, 2.5, 0.64);
init_wf = 0;
cCmbWF(sid->g.trsaw, 0.8, 2.4, 0.64);
cCmbWF(sid->g.pusaw, 1.4, 1.9, 0.68);
cCmbWF(sid->g.Pulsetrsaw, 0.8, 2.5, 0.64);
}
double prd0 = sid.g.ckr > 9 ? sid.g.ckr : 9;
sid.g.Aprd[0] = prd0;
sid.g.Astp[0] = ceil(prd0 / 9);
double prd0 = sid->g.ckr > 9 ? sid->g.ckr : 9;
sid->g.Aprd[0] = prd0;
sid->g.Astp[0] = ceil(prd0 / 9);
}
double dSID_render() {
double dSID_render(struct SID_chip* sid) {
double flin = 0, output = 0;
double wfout = 0;
for (int chn = 0; chn < SID_CHA; chn++) {
struct SIDVOICE *voic = &((struct SIDMEM *) (sid.M))->v[chn];
double pgt = (sid.SIDct->ch[chn].Ast & GAT);
for (int chn = 0; chn < 3; chn++) {
struct SIDVOICE *voic = &((struct SIDMEM *) (sid->M))->v[chn];
double pgt = (sid->SIDct->ch[chn].Ast & GAT);
uint8_t ctrl = voic->control;
uint8_t wf = ctrl & 0xF0;
uint8_t test = ctrl & TST;
@ -103,78 +115,78 @@ double dSID_render() {
double tmp = 0;
if (pgt != (ctrl & GAT)) {
if (pgt) {
sid.SIDct->ch[chn].Ast &= 0xFF - (GAT | ATK | DECSUS);
sid->SIDct->ch[chn].Ast &= 0xFF - (GAT | ATK | DECSUS);
} else {
sid.SIDct->ch[chn].Ast = (GAT | ATK | DECSUS);
if ((SR & 0xF) > (sid.SIDct->ch[chn].pSR & 0xF))
sid->SIDct->ch[chn].Ast = (GAT | ATK | DECSUS);
if ((SR & 0xF) > (sid->SIDct->ch[chn].pSR & 0xF))
tmp = 1;
}
}
sid.SIDct->ch[chn].pSR = SR;
sid.SIDct->ch[chn].rcnt += sid.g.ckr;
if (sid.SIDct->ch[chn].rcnt >= 0x8000)
sid.SIDct->ch[chn].rcnt -= 0x8000;
sid->SIDct->ch[chn].pSR = SR;
sid->SIDct->ch[chn].rcnt += sid->g.ckr;
if (sid->SIDct->ch[chn].rcnt >= 0x8000)
sid->SIDct->ch[chn].rcnt -= 0x8000;
static double step;
double prd;
if (sid.SIDct->ch[chn].Ast & ATK) {
if (sid->SIDct->ch[chn].Ast & ATK) {
step = voic->attack;
prd = sid.g.Aprd[(int) step];
} else if (sid.SIDct->ch[chn].Ast & DECSUS) {
prd = sid->g.Aprd[(int) step];
} else if (sid->SIDct->ch[chn].Ast & DECSUS) {
step = voic->decay;
prd = sid.g.Aprd[(int) step];
prd = sid->g.Aprd[(int) step];
} else {
step = SR & 0xF;
prd = sid.g.Aprd[(int) step];
prd = sid->g.Aprd[(int) step];
}
step = sid.g.Astp[(int) step];
if (sid.SIDct->ch[chn].rcnt >= prd && sid.SIDct->ch[chn].rcnt < prd + sid.g.ckr &&
step = sid->g.Astp[(int) step];
if (sid->SIDct->ch[chn].rcnt >= prd && sid->SIDct->ch[chn].rcnt < prd + sid->g.ckr &&
tmp == 0) {
sid.SIDct->ch[chn].rcnt -= prd;
if ((sid.SIDct->ch[chn].Ast & ATK) ||
++sid.SIDct->ch[chn].expcnt == Aexp[(int) sid.SIDct->ch[chn].envcnt]) {
if (!(sid.SIDct->ch[chn].Ast & _HZ)) {
if (sid.SIDct->ch[chn].Ast & ATK) {
sid.SIDct->ch[chn].envcnt += step;
if (sid.SIDct->ch[chn].envcnt >= 0xFF) {
sid.SIDct->ch[chn].envcnt = 0xFF;
sid.SIDct->ch[chn].Ast &= 0xFF - ATK;
sid->SIDct->ch[chn].rcnt -= prd;
if ((sid->SIDct->ch[chn].Ast & ATK) ||
++sid->SIDct->ch[chn].expcnt == Aexp[(int) sid->SIDct->ch[chn].envcnt]) {
if (!(sid->SIDct->ch[chn].Ast & _HZ)) {
if (sid->SIDct->ch[chn].Ast & ATK) {
sid->SIDct->ch[chn].envcnt += step;
if (sid->SIDct->ch[chn].envcnt >= 0xFF) {
sid->SIDct->ch[chn].envcnt = 0xFF;
sid->SIDct->ch[chn].Ast &= 0xFF - ATK;
}
} else if (!(sid.SIDct->ch[chn].Ast & DECSUS) ||
sid.SIDct->ch[chn].envcnt > (SR >> 4) + (SR & 0xF0)) {
sid.SIDct->ch[chn].envcnt -= step;
if (sid.SIDct->ch[chn].envcnt <= 0 &&
sid.SIDct->ch[chn].envcnt + step != 0) {
sid.SIDct->ch[chn].envcnt = 0;
sid.SIDct->ch[chn].Ast |= _HZ;
} else if (!(sid->SIDct->ch[chn].Ast & DECSUS) ||
sid->SIDct->ch[chn].envcnt > (SR >> 4) + (SR & 0xF0)) {
sid->SIDct->ch[chn].envcnt -= step;
if (sid->SIDct->ch[chn].envcnt <= 0 &&
sid->SIDct->ch[chn].envcnt + step != 0) {
sid->SIDct->ch[chn].envcnt = 0;
sid->SIDct->ch[chn].Ast |= _HZ;
}
}
}
sid.SIDct->ch[chn].expcnt = 0;
sid->SIDct->ch[chn].expcnt = 0;
} else {
}
}
sid.SIDct->ch[chn].envcnt = (int) sid.SIDct->ch[chn].envcnt & 0xFF;
double aAdd = (voic->freq_low + voic->freq_high * 256) * sid.g.ckr;
if (test || ((ctrl & SYN) && sid.SIDct->sMSBrise)) {
sid.SIDct->ch[chn].pacc = 0;
sid->SIDct->ch[chn].envcnt = (int) sid->SIDct->ch[chn].envcnt & 0xFF;
double aAdd = (voic->freq_low + voic->freq_high * 256) * sid->g.ckr;
if (test || ((ctrl & SYN) && sid->SIDct->sMSBrise)) {
sid->SIDct->ch[chn].pacc = 0;
} else {
sid.SIDct->ch[chn].pacc += aAdd;
if (sid.SIDct->ch[chn].pacc > 0xFFFFFF)
sid.SIDct->ch[chn].pacc -= 0x1000000;
sid->SIDct->ch[chn].pacc += aAdd;
if (sid->SIDct->ch[chn].pacc > 0xFFFFFF)
sid->SIDct->ch[chn].pacc -= 0x1000000;
}
double MSB = (int) sid.SIDct->ch[chn].pacc & 0x800000;
sid.SIDct->sMSBrise = (MSB > ((int) sid.SIDct->ch[chn].pracc & 0x800000)) ? 1 : 0;
double MSB = (int) sid->SIDct->ch[chn].pacc & 0x800000;
sid->SIDct->sMSBrise = (MSB > ((int) sid->SIDct->ch[chn].pracc & 0x800000)) ? 1 : 0;
if (wf & NOI) {
tmp = sid.SIDct->ch[chn].nLFSR;
if ((((int) sid.SIDct->ch[chn].pacc & 0x100000) !=
((int) sid.SIDct->ch[chn].pracc & 0x100000)) ||
tmp = sid->SIDct->ch[chn].nLFSR;
if ((((int) sid->SIDct->ch[chn].pacc & 0x100000) !=
((int) sid->SIDct->ch[chn].pracc & 0x100000)) ||
aAdd >= 0x100000) {
step = ((int) tmp & 0x400000) ^ (((int) tmp & 0x20000) << 5);
tmp = (((int) tmp << 1) + (step > 0 || test)) & 0x7FFFFF;
sid.SIDct->ch[chn].nLFSR = tmp;
sid->SIDct->ch[chn].nLFSR = tmp;
}
wfout = (wf & 0x70) ? 0
: (((int) tmp & 0x100000) >> 5) + (((int) tmp & 0x40000) >> 4) +
@ -189,7 +201,7 @@ double dSID_render() {
tmp = (int) tmp ^ 0xFFFF;
if (pw > tmp)
pw = tmp;
tmp = (int) sid.SIDct->ch[chn].pacc >> 8;
tmp = (int) sid->SIDct->ch[chn].pacc >> 8;
if (wf == PUL) {
int lel = ((int) aAdd >> 16);
if (lel > 0) {
@ -220,23 +232,23 @@ double dSID_render() {
if (wf & TRI) {
if (wf & SAW) {
wfout =
(wfout) ? cmbWF(chn, sid.g.Pulsetrsaw, (int) tmp >> 4, 1, &sid.g) : 0;
(wfout) ? cmbWF(chn, sid->g.Pulsetrsaw, (int) tmp >> 4, 1, &sid->g) : 0;
} else {
tmp = (int) sid.SIDct->ch[chn].pacc ^ (ctrl & RNG ? sid.SIDct->sMSB : 0);
tmp = (int) sid->SIDct->ch[chn].pacc ^ (ctrl & RNG ? sid->SIDct->sMSB : 0);
wfout =
(wfout)
? cmbWF(chn, sid.g.pusaw,
? cmbWF(chn, sid->g.pusaw,
((int) tmp ^ ((int) tmp & 0x800000 ? 0xFFFFFF : 0)) >> 11,
0, &sid.g)
0, &sid->g)
: 0;
}
} else if (wf & SAW)
wfout = (wfout) ? cmbWF(chn, sid.g.pusaw, (int) tmp >> 4, 1, &sid.g) : 0;
wfout = (wfout) ? cmbWF(chn, sid->g.pusaw, (int) tmp >> 4, 1, &sid->g) : 0;
}
} else if (wf & SAW) {
wfout = (int) sid.SIDct->ch[chn].pacc >> 8;
wfout = (int) sid->SIDct->ch[chn].pacc >> 8;
if (wf & TRI)
wfout = cmbWF(chn, sid.g.trsaw, (int) wfout >> 4, 1, &sid.g);
wfout = cmbWF(chn, sid->g.trsaw, (int) wfout >> 4, 1, &sid->g);
else {
step = aAdd / 0x1200000;
wfout += wfout * step;
@ -244,103 +256,107 @@ double dSID_render() {
wfout = 0xFFFF - (wfout - 0x10000) / step;
}
} else if (wf & TRI) {
tmp = (int) sid.SIDct->ch[chn].pacc ^ (ctrl & RNG ? sid.SIDct->sMSB : 0);
tmp = (int) sid->SIDct->ch[chn].pacc ^ (ctrl & RNG ? sid->SIDct->sMSB : 0);
wfout = ((int) tmp ^ ((int) tmp & 0x800000 ? 0xFFFFFF : 0)) >> 7;
}
if (wf)
sid.SIDct->ch[chn].prevwfout = wfout;
sid->SIDct->ch[chn].prevwfout = wfout;
else {
wfout = sid.SIDct->ch[chn].prevwfout;
wfout = sid->SIDct->ch[chn].prevwfout;
}
sid.SIDct->ch[chn].pracc = sid.SIDct->ch[chn].pacc;
sid.SIDct->sMSB = MSB;
sid->SIDct->ch[chn].pracc = sid->SIDct->ch[chn].pacc;
sid->SIDct->sMSB = MSB;
// double preflin = flin;
if ((sid.mute_mask & (1 << chn))) {
if (sid.M[0x17] & sid.SIDct->ch[chn].FSW) {
double chnout = (wfout - 0x8000) * (sid.SIDct->ch[chn].envcnt / 256);
if ((sid->mute_mask & (1 << chn))) {
if (sid->M[0x17] & sid->SIDct->ch[chn].FSW) {
double chnout = (wfout - 0x8000) * (sid->SIDct->ch[chn].envcnt / 256);
flin += chnout;
// defle fake filter for solo waveform ahead
// fake filter for solo waveform ahead
// mostly copypasted from below
double fakeflin = chnout;
double fakeflout = 0;
static double fakeplp[SID_CHA] = {0};
static double fakepbp[SID_CHA] = {0};
double ctf = ((double) (sid.M[0x15] & 7)) / 8 + sid.M[0x16] + 0.2;
static double fakeplp[3] = {0};
static double fakepbp[3] = {0};
double ctf = ((double) (sid->M[0x15] & 7)) / 8 + sid->M[0x16] + 0.2;
double reso;
if (sid.g.model == 8580) {
ctf = 1 - exp(ctf * sid.g.ctfr);
reso = pow(2, ((double) (4 - (double) (sid.M[0x17] >> 4)) / 8));
if (sid->g.model == 8580) {
ctf = 1 - exp(ctf * sid->g.ctfr);
reso = pow(2, ((double) (4 - (double) (sid->M[0x17] >> 4)) / 8));
} else {
if (ctf < 24)
ctf = 0.035;
else
ctf = 1 - 1.263 * exp(ctf * sid.g.ctf_ratio_6581);
reso = (sid.M[0x17] > 0x5F) ? 8.0 / (double) (sid.M[0x17] >> 4) : 1.41;
ctf = 1 - 1.263 * exp(ctf * sid->g.ctf_ratio_6581);
reso = (sid->M[0x17] > 0x5F) ? 8.0 / (double) (sid->M[0x17] >> 4) : 1.41;
}
double tmp = fakeflin + fakepbp[chn] * reso + fakeplp[chn];
if (sid.M[0x18] & HP)
if (sid->M[0x18] & HP)
fakeflout -= tmp;
tmp = fakepbp[chn] - tmp * ctf;
fakepbp[chn] = tmp;
if (sid.M[0x18] & BP)
if (sid->M[0x18] & BP)
fakeflout -= tmp;
tmp = fakeplp[chn] + tmp * ctf;
fakeplp[chn] = tmp;
if (sid.M[0x18] & LP)
if (sid->M[0x18] & LP)
fakeflout += tmp;
double defle_wf_out = (fakeflout / SID_OUT_SCALE) * (sid.M[0x18] & 0xF) * 65535;
waveforms_add_sample(1 + chn, defle_wf_out, defle_wf_out);
} else if ((chn % SID_CHA) != 2 || !(sid.M[0x18] & OFF3)) {
double chnout = (wfout - 0x8000) * (sid.SIDct->ch[chn].envcnt / 256);
double wf_out = (fakeflout / SID_OUT_SCALE) * (sid->M[0x18] & 0xF) * 65535;
waveforms_add_sample(1 + chn, wf_out);
} else if ((chn % 3) != 2 || !(sid->M[0x18] & OFF3)) {
double chnout = (wfout - 0x8000) * (sid->SIDct->ch[chn].envcnt / 256);
output += chnout;
double defle_wf_out = (chnout / SID_OUT_SCALE) * (sid.M[0x18] & 0xF) * 65535;
waveforms_add_sample(1 + chn, defle_wf_out, defle_wf_out);
double wf_out = (chnout / SID_OUT_SCALE) * (sid->M[0x18] & 0xF) * 65535;
waveforms_add_sample(1 + chn, wf_out);
}
} else {
waveforms_add_sample(1 + chn, 0, 0);
waveforms_add_sample(1 + chn, 0);
}
}
int M1 = 0;
if (M1 & 3)
sid.M[0x1B] = (int) wfout >> 8;
sid.M[0x1C] = sid.SIDct->ch[2].envcnt;
sid->M[0x1B] = (int) wfout >> 8;
sid->M[0x1C] = sid->SIDct->ch[2].envcnt;
double ctf = ((double) (sid.M[0x15] & 7)) / 8 + sid.M[0x16] + 0.2;
double ctf = ((double) (sid->M[0x15] & 7)) / 8 + sid->M[0x16] + 0.2;
double reso;
if (sid.g.model == 8580) {
ctf = 1 - exp(ctf * sid.g.ctfr);
reso = pow(2, ((double) (4 - (double) (sid.M[0x17] >> 4)) / 8));
if (sid->g.model == 8580) {
ctf = 1 - exp(ctf * sid->g.ctfr);
reso = pow(2, ((double) (4 - (double) (sid->M[0x17] >> 4)) / 8));
} else {
if (ctf < 24)
ctf = 0.035;
else
ctf = 1 - 1.263 * exp(ctf * sid.g.ctf_ratio_6581);
reso = (sid.M[0x17] > 0x5F) ? 8.0 / (double) (sid.M[0x17] >> 4) : 1.41;
ctf = 1 - 1.263 * exp(ctf * sid->g.ctf_ratio_6581);
reso = (sid->M[0x17] > 0x5F) ? 8.0 / (double) (sid->M[0x17] >> 4) : 1.41;
}
double tmp = flin + sid.SIDct->pbp * reso + sid.SIDct->plp;
if (sid.M[0x18] & HP)
double tmp = flin + sid->SIDct->pbp * reso + sid->SIDct->plp;
if (sid->M[0x18] & HP)
output -= tmp;
tmp = sid.SIDct->pbp - tmp * ctf;
sid.SIDct->pbp = tmp;
if (sid.M[0x18] & BP)
tmp = sid->SIDct->pbp - tmp * ctf;
sid->SIDct->pbp = tmp;
if (sid->M[0x18] & BP)
output -= tmp;
tmp = sid.SIDct->plp + tmp * ctf;
sid.SIDct->plp = tmp;
if (sid.M[0x18] & LP)
tmp = sid->SIDct->plp + tmp * ctf;
sid->SIDct->plp = tmp;
if (sid->M[0x18] & LP)
output += tmp;
return (output / SID_OUT_SCALE) * (sid.M[0x18] & 0xF);
return (output / SID_OUT_SCALE) * (sid->M[0x18] & 0xF);
}
void dSID_setMuteMask(int mute_mask) {
sid.mute_mask = mute_mask;
void dSID_setMuteMask(struct SID_chip* sid, int mute_mask) {
sid->mute_mask = mute_mask;
}
float dSID_getVolume(int channel) {
if ((sid.M[0x18] & 0xF) == 0)
float dSID_getVolume(struct SID_chip* sid, int channel) {
if ((sid->M[0x18] & 0xF) == 0)
return 0;
return sid.SIDct[0].ch[channel].envcnt / 256.0f;
return sid->SIDct[0].ch[channel].envcnt / 256.0f;
}
void dSID_write(struct SID_chip* sid, unsigned char addr, unsigned char val) {
sid->M[addr&0x1f]=val;
}

55
src/engine/platform/sound/c64_d/dsid.h
View File

@ -1,36 +1,12 @@
#pragma once
#ifndef DSID_H
#define DSID_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#define SID_CLK 985248
#define SID_CHA 3
#define SID_OUT_SCALE (0x10000 * SID_CHA * 16)
// TODO: prefix SID_
// CONTROL
#define GAT 0x01
#define SYN 0x02
#define RNG 0x04
#define TST 0x08
#define TRI 0x10
#define SAW 0x20
#define PUL 0x40
#define NOI 0x80
#define _HZ 0x10
#define DECSUS 0x40
#define ATK 0x80
// TODO: change
// filter mode (high)
#define LP 0x10
#define BP 0x20
#define HP 0x40
#define OFF3 0x80
extern const int Aexp[256];
struct SID_ctx_chan {
double rcnt;
double envcnt;
@ -67,7 +43,7 @@ struct SIDVOICE {
};
struct SIDMEM {
struct SIDVOICE v[SID_CHA];
struct SIDVOICE v[3];
uint8_t UNUSED : 4;
uint8_t cutoff_low : 4;
uint8_t cutoff_high;
@ -101,12 +77,19 @@ struct SID_chip {
struct SID_globals g;
struct SID_ctx SIDct[3];
uint8_t M[MemLen];
int16_t lastOut[3];
int mute_mask;
};
extern struct SID_chip sid;
double dSID_render(struct SID_chip* sid);
void dSID_init(struct SID_chip* sid, double clockRate, double samplingRate, int model, unsigned char init_wf);
float dSID_getVolume(struct SID_chip* sid, int channel);
void dSID_setMuteMask(struct SID_chip* sid, int mute_mask);
double dSID_render();
void dSID_init(double samplingRate, int model);
float dSID_getVolume(int channel);
void dSID_setMuteMask(int mute_mask);
void dSID_write(struct SID_chip* sid, unsigned char addr, unsigned char val);
#ifdef __cplusplus
}
#endif
#endif

1
src/gui/debug.cpp
View File

@ -356,7 +356,6 @@ void putDispatchChip(void* data, int type) {
ImGui::Text("- filtCut: %d",ch->filtCut);
ImGui::Text("- resetTime: %d",ch->resetTime);
COMMON_CHIP_DEBUG_BOOL;
ImGui::TextColored(ch->isFP?colorOn:colorOff,">> IsFP");
break;
}
case DIV_SYSTEM_ARCADE:

2
src/gui/gui.h
View File

@ -1544,7 +1544,7 @@ class FurnaceGUI {
snCore(0),
nesCore(0),
fdsCore(0),
c64Core(1),
c64Core(0),
pokeyCore(1),
opnCore(1),
pcSpeakerOutMethod(0),

11
src/gui/settings.cpp
View File

@ -116,7 +116,8 @@ const char* nesCores[]={
const char* c64Cores[]={
"reSID",
"reSIDfp"
"reSIDfp",
"dSID"
};
const char* pokeyCores[]={
@ -1254,7 +1255,7 @@ void FurnaceGUI::drawSettings() {
ImGui::Text("SID core");
ImGui::SameLine();
ImGui::Combo("##C64Core",&settings.c64Core,c64Cores,2);
ImGui::Combo("##C64Core",&settings.c64Core,c64Cores,3);
ImGui::Text("POKEY core");
ImGui::SameLine();
@ -2645,7 +2646,7 @@ void FurnaceGUI::syncSettings() {
settings.snCore=e->getConfInt("snCore",0);
settings.nesCore=e->getConfInt("nesCore",0);
settings.fdsCore=e->getConfInt("fdsCore",0);
settings.c64Core=e->getConfInt("c64Core",1);
settings.c64Core=e->getConfInt("c64Core",0);
settings.pokeyCore=e->getConfInt("pokeyCore",1);
settings.opnCore=e->getConfInt("opnCore",1);
settings.pcSpeakerOutMethod=e->getConfInt("pcSpeakerOutMethod",0);
@ -2791,7 +2792,7 @@ void FurnaceGUI::syncSettings() {
clampSetting(settings.snCore,0,1);
clampSetting(settings.nesCore,0,1);
clampSetting(settings.fdsCore,0,1);
clampSetting(settings.c64Core,0,1);
clampSetting(settings.c64Core,0,2);
clampSetting(settings.pokeyCore,0,1);
clampSetting(settings.opnCore,0,1);
clampSetting(settings.pcSpeakerOutMethod,0,4);
@ -2971,7 +2972,7 @@ void FurnaceGUI::commitSettings() {
settings.snCore!=e->getConfInt("snCore",0) ||
settings.nesCore!=e->getConfInt("nesCore",0) ||
settings.fdsCore!=e->getConfInt("fdsCore",0) ||
settings.c64Core!=e->getConfInt("c64Core",1) ||
settings.c64Core!=e->getConfInt("c64Core",0) ||
settings.pokeyCore!=e->getConfInt("pokeyCore",1) ||
settings.opnCore!=e->getConfInt("opnCore",1)
);