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dev145 - Namco WSG: new noise strategy for C30

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tildearrow 2023-03-09 02:55:16 -05:00
parent 3cede1c2fd
commit 8c706f71a9
5 changed files with 40 additions and 5 deletions
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14
src/engine/platform/namcowsg.cpp
View file

@ -316,9 +316,16 @@ void DivPlatformNamcoWSG::tick(bool sysTick) {
rWrite((i<<3)+0x100,0);
rWrite((i<<3)+0x104,(chan[(i+1)&7].noise?0x80:0));
}
rWrite((i<<3)+0x103,chan[i].freq&0xff);
rWrite((i<<3)+0x102,(chan[i].freq>>8)&0xff);
rWrite((i<<3)+0x101,((chan[i].freq>>16)&15)|(i<<4));
if (chan[i].noise && newNoise) {
int noiseFreq=chan[i].freq>>9;
if (noiseFreq<0) noiseFreq=0;
if (noiseFreq>255) noiseFreq=255;
rWrite((i<<3)+0x103,noiseFreq);
} else {
rWrite((i<<3)+0x103,chan[i].freq&0xff);
rWrite((i<<3)+0x102,(chan[i].freq>>8)&0xff);
rWrite((i<<3)+0x101,((chan[i].freq>>16)&15)|(i<<4));
}
}
break;
}
@ -544,6 +551,7 @@ void DivPlatformNamcoWSG::setFlags(const DivConfig& flags) {
for (int i=0; i<chans; i++) {
oscBuf[i]->rate=rate;
}
newNoise=flags.getBool("newNoise",true);
}
void DivPlatformNamcoWSG::poke(unsigned int addr, unsigned short val) {

1
src/engine/platform/namcowsg.h
View file

@ -49,6 +49,7 @@ class DivPlatformNamcoWSG: public DivDispatch {
namco_audio_device* namco;
int devType, chans;
bool newNoise;
unsigned char regPool[512];
void updateWave(int ch);
friend void putDispatchChip(void*,int);