otomatalabs/furnace
7
0
Fork 0
Code Issues Pull requests Actions Packages Projects Releases Wiki Activity

YM2608-LLE, part 12

Browse source
This commit is contained in:
tildearrow 2024-04-28 09:59:48 -05:00
parent 15fb257964
commit a235e4d77c
1 changed files with 27 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

35
src/engine/platform/ym2608.cpp
View file

@ -532,7 +532,18 @@ void DivPlatformYM2608::acquire_lle(short** buf, size_t len) {
}
} else if (!writes.empty()) {
QueuedWrite& w=writes.front();
if (w.addrOrVal) {
if (w.addr>=0x2d && w.addr<=0x2f) {
// ignore prescaler writes since it doesn't work too well
fm_lle.input.cs=1;
fm_lle.input.rd=1;
fm_lle.input.wr=1;
fm_lle.input.a1=0;
fm_lle.input.a0=0;
fm_lle.input.data=0;
regPool[w.addr&0x1ff]=w.val;
writes.pop_front();
} if (w.addrOrVal) {
fm_lle.input.cs=0;
fm_lle.input.rd=1;
fm_lle.input.wr=0;
@ -594,12 +605,20 @@ void DivPlatformYM2608::acquire_lle(short** buf, size_t len) {
}
if (!fm_lle.o_s && lastS) {
if (!fm_lle.o_sh1 && lastSH) {
dacOut[0]=dacVal^0x8000;
have0=true;
dacVal2=dacVal;
}
if (!fm_lle.o_sh2 && lastSH2) {
dacOut[1]=dacVal^0x8000;
dacVal2=dacVal;
}
if (fm_lle.o_sh1 && !lastSH) {
dacOut[0]=dacVal2^0x8000;
have0=true;
}
if (fm_lle.o_sh2 && !lastSH2) {
dacOut[1]=dacVal2^0x8000;
have1=true;
}
@ -636,7 +655,7 @@ void DivPlatformYM2608::acquire_lle(short** buf, size_t len) {
}
if (howLong!=48) {
//logW("NOT 48! %d",howLong);
logW("NOT 48! %d",howLong);
}
// chan osc
@ -663,8 +682,8 @@ void DivPlatformYM2608::acquire_lle(short** buf, size_t len) {
int accm1=(short)dacOut[0];
int accm2=(short)dacOut[1];
int outL=(accm1)+fm_lle.o_analog*ssgVol*42;
int outR=(accm2)+fm_lle.o_analog*ssgVol*42;
int outL=((accm1*fmVol)>>8)+fm_lle.o_analog*ssgVol*42;
int outR=((accm2*fmVol)>>8)+fm_lle.o_analog*ssgVol*42;
if (outL<-32768) outL=-32768;
if (outL>32767) outL=32767;
@ -1931,7 +1950,7 @@ void DivPlatformYM2608::setFlags(const DivConfig& flags) {
ssgVol=flags.getInt("ssgVol",128);
fmVol=flags.getInt("fmVol",256);
if (useCombo==2) {
rate=chipClock/144;
rate=chipClock/(fmDivBase*2);
} else {
rate=fm->sample_rate(chipClock);
}