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Mapper 67 (SunSoft 3) support

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This commit is contained in:
Souryo 2016-01-23 12:51:10 -05:00
parent 46ea449efc
commit 4b037162b7
4 changed files with 76 additions and 0 deletions
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1
Core/Core.vcxproj
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@ -474,6 +474,7 @@
<ClInclude Include="ROMLoader.h" />
<ClInclude Include="stdafx.h" />
<ClInclude Include="Sunsoft184.h" />
<ClInclude Include="SunSoft3.h" />
<ClInclude Include="Sunsoft89.h" />
<ClInclude Include="Sunsoft93.h" />
<ClInclude Include="TaitoTc0190.h" />

3
Core/Core.vcxproj.filters
View file

@ -434,6 +434,9 @@
<ClInclude Include="Mapper62.h">
<Filter>Nes\Mappers</Filter>
</ClInclude>
<ClInclude Include="SunSoft3.h">
<Filter>Nes\Mappers</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<ClCompile Include="stdafx.cpp">

2
Core/MapperFactory.cpp
View file

@ -60,6 +60,7 @@
#include "Sachen_147.h"
#include "Sachen_148.h"
#include "Sachen_149.h"
#include "Sunsoft3.h"
#include "Sunsoft89.h"
#include "Sunsoft93.h"
#include "Sunsoft184.h"
@ -113,6 +114,7 @@ BaseMapper* MapperFactory::GetMapperFromID(ROMLoader &romLoader)
case 61: return new Mapper61();
case 62: return new Mapper62();
case 66: return new GxRom();
case 67: return new SunSoft3();
case 70: return new Bandai74161_7432(false);
case 71: return new BF909x();
case 72: return new JalecoJf17_19(false);

70
Core/SunSoft3.h Normal file
View file

@ -0,0 +1,70 @@
#pragma once
#include "stdafx.h"
#include "BaseMapper.h"
#include "CPU.h"
class SunSoft3 : public BaseMapper
{
private:
bool _irqLatch = false;
bool _irqEnabled = false;
uint16_t _irqCounter = 0;
protected:
virtual uint16_t GetPRGPageSize() { return 0x4000; }
virtual uint16_t GetCHRPageSize() { return 0x800; }
void InitMapper()
{
SelectPRGPage(1, -1);
}
virtual void StreamState(bool saving)
{
BaseMapper::StreamState(saving);
Stream<bool>(_irqLatch);
Stream<bool>(_irqEnabled);
Stream<uint16_t>(_irqCounter);
}
virtual void ProcessCpuClock()
{
if(_irqEnabled) {
_irqCounter--;
if(_irqCounter == 0xFFFF) {
_irqEnabled = false;
CPU::SetIRQSource(IRQSource::External);
}
}
}
void WriteRegister(uint16_t addr, uint8_t value)
{
switch(addr & 0xF800) {
case 0x8800: SelectCHRPage(0, value); break;
case 0x9800: SelectCHRPage(1, value); break;
case 0xA800: SelectCHRPage(2, value); break;
case 0xB800: SelectCHRPage(3, value); break;
case 0xC800:
_irqCounter &= _irqLatch ? 0xFF00 : 0x00FF;
_irqCounter |= _irqLatch ? value : (value << 8);
_irqLatch = !_irqLatch;
break;
case 0xD800:
_irqEnabled = (value & 0x10) == 0x10;
_irqLatch = false;
CPU::ClearIRQSource(IRQSource::External);
break;
case 0xE800:
switch(value & 0x03) {
case 0: SetMirroringType(MirroringType::Vertical); break;
case 1: SetMirroringType(MirroringType::Horizontal); break;
case 2: SetMirroringType(MirroringType::ScreenAOnly); break;
case 3: SetMirroringType(MirroringType::ScreenBOnly); break;
}
break;
case 0xF800: SelectPRGPage(0, value); break;
}
}
};
#pragma once