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YM2612: implement 30xx on ExtCh

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tildearrow 2023-07-29 14:17:04 -05:00
parent 97d44d9a26
commit 233431c2cc
1 changed files with 12 additions and 1 deletions
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11
src/engine/platform/genesisext.cpp
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@ -19,6 +19,7 @@
#include "genesisext.h"
#include "../engine.h"
#include "../../ta-log.h"
#include <math.h>
#define CHIP_FREQBASE fmFreqBase
@ -576,6 +577,7 @@ void DivPlatformGenesisExt::tick(bool sysTick) {
bool writeNoteOn=false;
unsigned char writeMask=2;
unsigned char hardResetMask=0;
if (extMode) for (int i=0; i<4; i++) {
if (opChan[i].freqChanged) {
if (parent->song.linearPitch==2) {
@ -603,10 +605,15 @@ void DivPlatformGenesisExt::tick(bool sysTick) {
writeNoteOn=true;
if (opChan[i].mask) {
writeMask|=1<<(4+i);
if (opChan[i].hardReset) {
hardResetMask|=1<<(4+i);
}
}
if (!opChan[i].hardReset) {
opChan[i].keyOn=false;
}
}
}
if (extMode) {
if (chan[csmChan].freqChanged) {
@ -638,7 +645,9 @@ void DivPlatformGenesisExt::tick(bool sysTick) {
(writeMask&0x40)?'3':'-',
(writeMask&0x80)?'4':'-'
);*/
writeMask^=hardResetMask;
immWrite(0x28,writeMask);
writeMask^=hardResetMask;
// hard reset handling
if (mustHardReset) {
@ -648,9 +657,11 @@ void DivPlatformGenesisExt::tick(bool sysTick) {
for (int i=0; i<4; i++) {
if (opChan[i].keyOn && opChan[i].hardReset) {
// restore SL/RR
logV("eco: %d",extChanOffs);
unsigned short baseAddr=chanOffs[extChanOffs]|opOffs[i];
DivInstrumentFM::Operator& op=chan[extChanOffs].state.op[i];
immWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
opChan[i].keyOn=false;
}
}
immWrite(0x28,writeMask);