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make the flags option actually work

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This commit is contained in:
tildearrow 2022-01-29 00:20:27 -05:00
parent 44649e3ce4
commit b6da7871d4
19 changed files with 208 additions and 68 deletions
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29
src/engine/platform/sms.cpp
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@ -57,7 +57,7 @@ void DivPlatformSMS::tick() {
if (chan[3].freqChanged || updateSNMode) {
updateSNMode=false;
// seems arbitrary huh?
chan[3].freq=parent->calcFreq(chan[3].baseFreq,chan[3].pitch-1,true);
chan[3].freq=parent->calcFreq(chan[3].baseFreq,chan[3].pitch-1-(isRealSN?127:0),true);
if (chan[3].freq>1023) chan[3].freq=1023;
if (chan[3].note>0x5d) chan[3].freq=0x01;
chan[3].freqChanged=false;
@ -222,11 +222,32 @@ void DivPlatformSMS::notifyInsDeletion(void* ins) {
}
void DivPlatformSMS::setFlags(unsigned int flags) {
if (flags) {
if ((flags&3)==2) {
chipClock=4000000;
} else if ((flags&3)==1) {
chipClock=COLOR_PAL*4.0/5.0;
} else {
chipClock=COLOR_NTSC;
}
if (sn!=NULL) delete sn;
switch (flags>>2) {
case 1: // TI
sn=new sn76496_base_device(0x4000, 0x4000, 0x01, 0x02, true, 1, false, true);
isRealSN=true;
break;
case 2: // TI+Atari
sn=new sn76496_base_device(0x4000, 0x0f35, 0x01, 0x02, true, 1, false, true);
isRealSN=true;
break;
case 3: // Game Gear (not fully emulated yet!)
sn=new sn76496_base_device(0x8000, 0x8000, 0x01, 0x08, false, 1, false, false);
isRealSN=false;
break;
default: // Sega
sn=new sn76496_base_device(0x8000, 0x8000, 0x01, 0x08, false, 1, false, false);
isRealSN=false;
break;
}
rate=chipClock/16;
}
@ -237,14 +258,14 @@ int DivPlatformSMS::init(DivEngine* p, int channels, int sugRate, unsigned int f
for (int i=0; i<4; i++) {
isMuted[i]=false;
}
sn=NULL;
setFlags(flags);
sn=new sn76496_device(rate);
reset();
return 4;
}
void DivPlatformSMS::quit() {
delete sn;
if (sn!=NULL) delete sn;
}
DivPlatformSMS::~DivPlatformSMS() {