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Mapper 222 support

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This commit is contained in:
Souryo 2016-08-12 20:48:16 -04:00
parent 0755b51558
commit 4c1c1f885b
4 changed files with 90 additions and 1 deletions
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1
Core/Core.vcxproj
View File

@ -458,6 +458,7 @@
<ClInclude Include="Mapper212.h" />
<ClInclude Include="Mapper218.h" />
<ClInclude Include="Mapper221.h" />
<ClInclude Include="Mapper222.h" />
<ClInclude Include="Mapper225.h" />
<ClInclude Include="Mapper226.h" />
<ClInclude Include="Mapper227.h" />

3
Core/Core.vcxproj.filters
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@ -868,6 +868,9 @@
<ClInclude Include="Mapper229.h">
<Filter>Nes\Mappers\Unnamed</Filter>
</ClInclude>
<ClInclude Include="Mapper222.h">
<Filter>Nes\Mappers\Unnamed</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<ClCompile Include="stdafx.cpp">

83
Core/Mapper222.h Normal file
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@ -0,0 +1,83 @@
#pragma once
#include "stdafx.h"
#include "BaseMapper.h"
#include "PPU.h"
#include "CPU.h"
class Mapper222 : public BaseMapper
{
private:
uint16_t _irqCounter;
uint32_t _cyclesDown;
uint32_t _lastCycle;
protected:
virtual uint16_t GetPRGPageSize() { return 0x2000; }
virtual uint16_t GetCHRPageSize() { return 0x400; }
void InitMapper()
{
_irqCounter = 0;
_cyclesDown = 0;
_lastCycle = 0;
SelectPrgPage2x(1, -2);
}
void StreamState(bool saving)
{
BaseMapper::StreamState(saving);
Stream(_irqCounter, _cyclesDown, _lastCycle);
}
virtual void NotifyVRAMAddressChange(uint16_t addr)
{
uint32_t cycle = PPU::GetFrameCycle();
if((addr & 0x1000) == 0) {
if(_cyclesDown == 0) {
_cyclesDown = 1;
} else {
if(_lastCycle > cycle) {
//We changed frames
_cyclesDown += (89342 - _lastCycle) + cycle;
} else {
_cyclesDown += (cycle - _lastCycle);
}
}
} else if(addr & 0x1000) {
if(_cyclesDown > 8) {
if(_irqCounter) {
_irqCounter++;
if(_irqCounter >= 240) {
CPU::SetIRQSource(IRQSource::External);
_irqCounter = 0;
}
}
}
_cyclesDown = 0;
}
_lastCycle = cycle;
}
void WriteRegister(uint16_t addr, uint8_t value)
{
switch(addr & 0xF003) {
case 0x8000: SelectPRGPage(0, value); break;
case 0x9000: SetMirroringType(value & 0x01 ? MirroringType::Horizontal : MirroringType::Vertical); break;
case 0xA000: SelectPRGPage(1, value); break;
case 0xB000: SelectCHRPage(0, value); break;
case 0xB002: SelectCHRPage(1, value); break;
case 0xC000: SelectCHRPage(2, value); break;
case 0xC002: SelectCHRPage(3, value); break;
case 0xD000: SelectCHRPage(4, value); break;
case 0xD002: SelectCHRPage(5, value); break;
case 0xE000: SelectCHRPage(6, value); break;
case 0xE002: SelectCHRPage(7, value); break;
case 0xF000:
_irqCounter = value;
CPU::ClearIRQSource(IRQSource::External);
break;
}
}
};

4
Core/MapperFactory.cpp
View File

@ -63,6 +63,7 @@
#include "Mapper212.h"
#include "Mapper218.h"
#include "Mapper221.h"
#include "Mapper222.h"
#include "Mapper225.h"
#include "Mapper226.h"
#include "Mapper227.h"
@ -181,7 +182,7 @@ Supported mappers:
| |===| |163|164|165|166|167|168|===|170|171|172|173|===|175|
|176|177|178|179|180| |182| |184|185| |187|188|189|===|191|
|192|193|194|195| |197| | |200|201|202|203| |205|206|207|
| |209|210|211|212| | | | | |218| | |221| | |
| |209|210|211|212| | | | | |218| | |221|222| |
| |225|226|227|228|229|230|231|232|233|234|235| |===|238|===|
|240|241|242|243|244|245|246|===|===|249|250|===|252| |254| |
-----------------------------------------------------------------
@ -368,6 +369,7 @@ BaseMapper* MapperFactory::GetMapperFromID(RomData &romData)
case 212: return new Mapper212();
case 218: return new Mapper218();
case 221: return new Mapper221();
case 222: return new Mapper222();
case 225: return new Mapper225();
case 226: return new Mapper226();
case 227: return new Mapper227();