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Pitch correction (again), Fix compatibility issue

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This commit is contained in:
cam900 2022-06-18 10:38:48 +09:00
parent 66f3f0e678
commit 6dc81c7af1
2 changed files with 17 additions and 11 deletions
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24
src/engine/platform/sms.cpp
View file

@ -120,7 +120,7 @@ void DivPlatformSMS::acquire(short* bufL, short* bufR, size_t start, size_t len)
void DivPlatformSMS::tick(bool sysTick) {
for (int i=0; i<4; i++) {
int CHIP_DIVIDER=toneDivider;
double CHIP_DIVIDER=toneDivider;
if (i==3) CHIP_DIVIDER=noiseDivider;
chan[i].std.next();
if (chan[i].std.vol.had) {
@ -245,7 +245,7 @@ void DivPlatformSMS::tick(bool sysTick) {
}
int DivPlatformSMS::dispatch(DivCommand c) {
int CHIP_DIVIDER=toneDivider;
double CHIP_DIVIDER=toneDivider;
if (c.chan==3) CHIP_DIVIDER=noiseDivider;
switch (c.cmd) {
case DIV_CMD_NOTE_ON:
@ -465,8 +465,8 @@ void DivPlatformSMS::setFlags(unsigned int flags) {
}
resetPhase=!(flags&16);
divider=16;
toneDivider=64;
noiseDivider=64;
toneDivider=64.0;
noiseDivider=64.0;
if (sn!=NULL) delete sn;
switch (flags&0xcc) {
default: // Sega
@ -479,11 +479,13 @@ void DivPlatformSMS::setFlags(unsigned int flags) {
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 0x08: // TI+Atari
sn=new sn76496_base_device(0x4000, 0x0f35, 0x01, 0x02, true, false, 8, false, true);
sn=new sn76496_base_device(0x4000, 0x0f35, 0x01, 0x02, true, false, 1/*8*/, false, true);
isRealSN=true;
stereo=false;
noiseDivider=60.0;
break;
case 0x0c: // Game Gear (not fully emulated yet!)
sn=new gamegear_device();
@ -494,37 +496,41 @@ void DivPlatformSMS::setFlags(unsigned int flags) {
sn=new sn76489a_device();
isRealSN=false; // TODO
stereo=false;
noiseDivider=60.0;
break;
case 0x44: // TI SN76496
sn=new sn76496_device();
isRealSN=false; // TODO
stereo=false;
noiseDivider=60.0;
break;
case 0x48: // NCR 8496
sn=new ncr8496_device();
isRealSN=false;
stereo=false;
noiseDivider=60.0;
break;
case 0x4c: // Tandy PSSJ 3-voice sound
sn=new pssj3_device();
isRealSN=false;
stereo=false;
noiseDivider=60.0;
break;
case 0x80: // TI SN94624
sn=new sn94624_device();
isRealSN=true;
stereo=false;
divider=2;
toneDivider=8;
noiseDivider=8;
toneDivider=8.0;
noiseDivider=7.5;
break;
case 0x84: // TI SN76494
sn=new sn76494_device();
isRealSN=false; // TODO
stereo=false;
divider=2;
toneDivider=8;
noiseDivider=8;
toneDivider=8.0;
noiseDivider=7.5;
break;
}
rate=chipClock/divider;

4
src/engine/platform/sms.h
View file

@ -62,8 +62,8 @@ class DivPlatformSMS: public DivDispatch {
unsigned char oldValue;
unsigned char snNoiseMode;
int divider=16;
int toneDivider=64;
int noiseDivider=64;
double toneDivider=64.0;
double noiseDivider=64.0;
bool updateSNMode;
bool resetPhase;
bool isRealSN;