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SMS: add 1.79MHz option

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tildearrow 2022-02-24 18:00:19 -05:00
parent 4b6d9adcb9
commit 28254d4b24
2 changed files with 7 additions and 1 deletions
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4
src/engine/platform/sms.cpp
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@ -301,7 +301,9 @@ void DivPlatformSMS::poke(std::vector<DivRegWrite>& wlist) {
} }
void DivPlatformSMS::setFlags(unsigned int flags) { void DivPlatformSMS::setFlags(unsigned int flags) {
if ((flags&3)==2) { if ((flags&3)==3) {
chipClock=COLOR_NTSC/2.0;
} else if ((flags&3)==2) {
chipClock=4000000; chipClock=4000000;
} else if ((flags&3)==1) { } else if ((flags&3)==1) {
chipClock=COLOR_PAL*4.0/5.0; chipClock=COLOR_PAL*4.0/5.0;

4
src/gui/gui.cpp
View file

@ -4544,6 +4544,10 @@ bool FurnaceGUI::loop() {
e->setSysFlags(i,(flags&(~3))|2,restart); e->setSysFlags(i,(flags&(~3))|2,restart);
updateWindowTitle(); updateWindowTitle();
} }
if (ImGui::RadioButton("Half NTSC (1.79MHz)",(flags&3)==3)) {
e->setSysFlags(i,(flags&(~3))|3,restart);
updateWindowTitle();
}
ImGui::Text("Chip type:"); ImGui::Text("Chip type:");
if (ImGui::RadioButton("Sega VDP/Master System",((flags>>2)&3)==0)) { if (ImGui::RadioButton("Sega VDP/Master System",((flags>>2)&3)==0)) {
e->setSysFlags(i,(flags&(~12))|0,restart); e->setSysFlags(i,(flags&(~12))|0,restart);