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Fix LFO disable/enable behavior for YM2151.

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This commit is contained in:
ZeroByteOrg 2022-06-29 16:59:47 -05:00
parent a8a38dce2b
commit 807848cfee
1 changed files with 13 additions and 5 deletions
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18
src/engine/platform/arcade.cpp
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@ -172,7 +172,7 @@ void DivPlatformArcade::acquire_nuked(short* bufL, short* bufR, size_t start, si
w.addrOrVal=true; w.addrOrVal=true;
} }
} }
OPM_Clock(&fm,NULL,NULL,NULL,NULL); OPM_Clock(&fm,NULL,NULL,NULL,NULL);
OPM_Clock(&fm,NULL,NULL,NULL,NULL); OPM_Clock(&fm,NULL,NULL,NULL,NULL);
OPM_Clock(&fm,NULL,NULL,NULL,NULL); OPM_Clock(&fm,NULL,NULL,NULL,NULL);
@ -182,13 +182,13 @@ void DivPlatformArcade::acquire_nuked(short* bufL, short* bufR, size_t start, si
for (int i=0; i<8; i++) { for (int i=0; i<8; i++) {
oscBuf[i]->data[oscBuf[i]->needle++]=fm.ch_out[i]; oscBuf[i]->data[oscBuf[i]->needle++]=fm.ch_out[i];
} }
if (o[0]<-32768) o[0]=-32768; if (o[0]<-32768) o[0]=-32768;
if (o[0]>32767) o[0]=32767; if (o[0]>32767) o[0]=32767;
if (o[1]<-32768) o[1]=-32768; if (o[1]<-32768) o[1]=-32768;
if (o[1]>32767) o[1]=32767; if (o[1]>32767) o[1]=32767;
bufL[h]=o[0]; bufL[h]=o[0];
bufR[h]=o[1]; bufR[h]=o[1];
} }
@ -211,7 +211,7 @@ void DivPlatformArcade::acquire_ymfm(short* bufL, short* bufR, size_t start, siz
delay=1; delay=1;
} }
} }
fm_ymfm->generate(&out_ymfm); fm_ymfm->generate(&out_ymfm);
for (int i=0; i<8; i++) { for (int i=0; i<8; i++) {
@ -225,7 +225,7 @@ void DivPlatformArcade::acquire_ymfm(short* bufL, short* bufR, size_t start, siz
os[1]=out_ymfm.data[1]; os[1]=out_ymfm.data[1];
if (os[1]<-32768) os[1]=-32768; if (os[1]<-32768) os[1]=-32768;
if (os[1]>32767) os[1]=32767; if (os[1]>32767) os[1]=32767;
bufL[h]=os[0]; bufL[h]=os[0];
bufR[h]=os[1]; bufR[h]=os[1];
} }
@ -616,6 +616,12 @@ int DivPlatformArcade::dispatch(DivCommand c) {
break; break;
} }
case DIV_CMD_FM_LFO: { case DIV_CMD_FM_LFO: {
if(c.value==0) {
rWrite(0x01,0x02);
}
else {
rWrite(0x01,0x00);
}
rWrite(0x18,c.value); rWrite(0x18,c.value);
break; break;
} }
@ -938,6 +944,8 @@ void DivPlatformArcade::reset() {
pmDepth=0x7f; pmDepth=0x7f;
//rWrite(0x18,0x10); //rWrite(0x18,0x10);
immWrite(0x01,0x02); // LFO Off
immWrite(0x18,0x00); // LFO Freq Off
immWrite(0x19,amDepth); immWrite(0x19,amDepth);
immWrite(0x19,0x80|pmDepth); immWrite(0x19,0x80|pmDepth);
//rWrite(0x1b,0x00); //rWrite(0x1b,0x00);