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tildearrow 2022-09-24 02:31:10 -05:00
parent 98cebf92f2
commit 5e2a247b77
3 changed files with 62 additions and 62 deletions
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28
src/engine/zsm.cpp
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@ -110,14 +110,14 @@ void DivZSM::writeYM(unsigned char a, unsigned char v) {
void DivZSM::writePSG(unsigned char a, unsigned char v) {
// TODO: suppress writes to PSG voice that is not audible (volume=0)
if (a >= 64) {
logD ("ZSM: ignoring VERA PSG write a=%02x v=%02x",a,v);
return;
logD ("ZSM: ignoring VERA PSG write a=%02x v=%02x",a,v);
return;
}
if(psgState[psg_PREV][a] == v) {
if (psgState[psg_NEW][a] != v)
// NEW value is being reset to the same as PREV value
// so it is no longer a new write.
numWrites--;
numWrites--;
} else {
if (psgState[psg_PREV][a] == psgState[psg_NEW][a])
// if this write changes the NEW cached value to something other
@ -143,7 +143,7 @@ void DivZSM::setLoopPoint() {
flushTicks(); // flush ticks incase no writes were pending
logI("ZSM: loop at file offset %d bytes",w->tell());
loopOffset=w->tell();
//update the ZSM header's loop offset value
// update the ZSM header's loop offset value
w->seek(0x03,SEEK_SET);
w->writeS((short)(loopOffset&0xffff));
w->writeC((unsigned char)((loopOffset>>16)&0xff));
@ -155,7 +155,7 @@ void DivZSM::setLoopPoint() {
// ... and cache (except for unused channels)
memset(&ymState[ym_NEW],-1,0x20);
for (int chan=0; chan<8 ; chan++) {
//do not clear state for as-yet-unused channels
// do not clear state for as-yet-unused channels
if (!(ymMask & (1<<chan))) continue;
// clear the state for channels in use so they match the unknown state
// of the YM shadow.
@ -189,11 +189,11 @@ void DivZSM::flushWrites() {
for (DivRegWrite& write: ymwrites) {
if (n%ZSM_YM_MAX_WRITES == 0) {
if(ymwrites.size()-n > ZSM_YM_MAX_WRITES) {
w->writeC((unsigned char)(ZSM_YM_CMD+ZSM_YM_MAX_WRITES));
logD("ZSM: YM-write: %d (%02x) [max]",ZSM_YM_MAX_WRITES,ZSM_YM_MAX_WRITES+ZSM_YM_CMD);
w->writeC((unsigned char)(ZSM_YM_CMD+ZSM_YM_MAX_WRITES));
logD("ZSM: YM-write: %d (%02x) [max]",ZSM_YM_MAX_WRITES,ZSM_YM_MAX_WRITES+ZSM_YM_CMD);
} else {
w->writeC((unsigned char)(ZSM_YM_CMD+ymwrites.size()-n));
logD("ZSM: YM-write: %d (%02x)",ymwrites.size()-n,ZSM_YM_CMD+ymwrites.size()-n);
w->writeC((unsigned char)(ZSM_YM_CMD+ymwrites.size()-n));
logD("ZSM: YM-write: %d (%02x)",ymwrites.size()-n,ZSM_YM_CMD+ymwrites.size()-n);
}
}
n++;
@ -206,13 +206,13 @@ void DivZSM::flushWrites() {
void DivZSM::flushTicks() {
while (ticks > ZSM_DELAY_MAX) {
logD("ZSM: write delay %d (max)",ZSM_DELAY_MAX);
w->writeC((unsigned char)(ZSM_DELAY_CMD+ZSM_DELAY_MAX));
ticks -= ZSM_DELAY_MAX;
logD("ZSM: write delay %d (max)",ZSM_DELAY_MAX);
w->writeC((unsigned char)(ZSM_DELAY_CMD+ZSM_DELAY_MAX));
ticks -= ZSM_DELAY_MAX;
}
if (ticks>0) {
logD("ZSM: write delay %d",ticks);
w->writeC(ZSM_DELAY_CMD+ticks);
logD("ZSM: write delay %d",ticks);
w->writeC(ZSM_DELAY_CMD+ticks);
}
ticks=0;
}