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VS DualSystem: Support trimmed roms properly

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This commit is contained in:
Sour 2018-07-08 19:05:57 -04:00
parent 8912dcf13c
commit 03b215cef5
2 changed files with 32 additions and 5 deletions
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2
Core/VsControlManager.cpp
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@ -17,6 +17,8 @@ void VsControlManager::Reset(bool softReset)
{
ControlManager::Reset(softReset);
_protectionCounter = 0;
//Unsure about this, needed for VS Wrecking Crew
UpdateSlaveMasterBit(_console->IsMaster() ? 0x00 : 0x02);
_vsSystemType = _console->GetRomInfo().VsType;

35
Core/VsSystem.h
View file

@ -27,11 +27,36 @@ protected:
//"Note: unlike all other mappers, an undersize mapper 99 image implies open bus instead of mirroring."
//However, it doesn't look like any game actually rely on this behavior? So not implemented for now.
uint8_t prgOuter = _console->IsMaster() ? 0 : 4;
SelectPRGPage(0, 0 | prgOuter);
SelectPRGPage(1, 1 | prgOuter);
SelectPRGPage(2, 2 | prgOuter);
SelectPRGPage(3, 3 | prgOuter);
bool initialized = false;
if(_prgSize == 0xC000) {
//48KB rom == unpadded dualsystem rom
if(_romInfo.VsType == VsSystemType::VsDualSystem) {
uint8_t prgOuter = _console->IsMaster() ? 0 : 3;
SelectPRGPage(1, 0 + prgOuter);
SelectPRGPage(2, 1 + prgOuter);
SelectPRGPage(3, 2 + prgOuter);
initialized = true;
} else if(_romInfo.VsType == VsSystemType::RaidOnBungelingBayProtection) {
if(_console->IsMaster()) {
SelectPRGPage(0, 0);
SelectPRGPage(1, 1);
SelectPRGPage(2, 2);
SelectPRGPage(3, 3);
} else {
//Slave CPU
SelectPRGPage(0, 4);
}
initialized = true;
}
}
if(!initialized) {
uint8_t prgOuter = _console->IsMaster() ? 0 : 4;
SelectPRGPage(0, 0 | prgOuter);
SelectPRGPage(1, 1 | prgOuter);
SelectPRGPage(2, 2 | prgOuter);
SelectPRGPage(3, 3 | prgOuter);
}
uint8_t chrOuter = _console->IsMaster() ? 0 : 2;
SelectCHRPage(0, 0 | chrOuter);