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Mapper 43 support

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This commit is contained in:
Souryo 2016-11-09 19:46:46 -05:00
parent 36f9a2bf0f
commit 35338bd51a
4 changed files with 84 additions and 1 deletions
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1
Core/Core.vcxproj
View file

@ -490,6 +490,7 @@
<ClInclude Include="Mapper234.h" />
<ClInclude Include="Mapper183.h" />
<ClInclude Include="Mapper253.h" />
<ClInclude Include="Mapper43.h" />
<ClInclude Include="Mapper83.h" />
<ClInclude Include="MMC3_123.h" />
<ClInclude Include="MMC3_126.h" />

3
Core/Core.vcxproj.filters
View file

@ -1018,6 +1018,9 @@
<ClInclude Include="Cc21.h">
<Filter>Nes\Mappers\Unif</Filter>
</ClInclude>
<ClInclude Include="Mapper43.h">
<Filter>Nes\Mappers\Unnamed</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<ClCompile Include="stdafx.cpp">

77
Core/Mapper43.h Normal file
View file

@ -0,0 +1,77 @@
#pragma once
#include "stdafx.h"
#include "BaseMapper.h"
#include "CPU.h"
class Mapper43 : public BaseMapper
{
private:
uint8_t _reg;
bool _swap;
uint16_t _irqCounter;
bool _irqEnabled;
protected:
uint16_t GetPRGPageSize() override { return 0x2000; }
uint16_t GetCHRPageSize() override { return 0x2000; }
uint16_t RegisterStartAddress() override { return 0x4020; }
uint16_t RegisterEndAddress() override { return 0xFFFF; }
void InitMapper() override
{
_irqCounter = 0;
_irqEnabled = false;
_swap = false;
_reg = 0;
UpdateState();
SetCpuMemoryMapping(0x5000, 0x5FFF, 8, PrgMemoryType::PrgRom);
SelectPRGPage(0, 1);
SelectPRGPage(1, 0);
SelectCHRPage(0, 0);
}
void StreamState(bool saving) override
{
BaseMapper::StreamState(saving);
Stream(_irqCounter, _irqEnabled, _reg, _swap);
if(!saving) {
UpdateState();
}
}
void ProcessCpuClock() override
{
if(_irqEnabled) {
_irqCounter++;
if(_irqCounter >= 4096) {
_irqEnabled = false;
CPU::SetIRQSource(IRQSource::External);
}
}
}
void UpdateState()
{
SetCpuMemoryMapping(0x6000, 0x7FFF, _swap ? 0 : 2, PrgMemoryType::PrgRom);
SelectPRGPage(2, _reg);
SelectPRGPage(3, _swap ? 8 : 9);
}
void WriteRegister(uint16_t addr, uint8_t value) override
{
int lut[8] = { 4, 3, 5, 3, 6, 3, 7, 3 };
switch(addr & 0xF1FF) {
case 0x4022: _reg = lut[value & 0x07]; UpdateState(); break;
case 0x4120: _swap = value & 0x01; UpdateState(); break;
case 0x8122:
case 0x4122:
_irqEnabled = (value & 0x01) == 0x01;
CPU::ClearIRQSource(IRQSource::External);
_irqCounter = 0;
break;
}
}
};

4
Core/MapperFactory.cpp
View file

@ -56,6 +56,7 @@
#include "Mapper35.h"
#include "Mapper40.h"
#include "Mapper42.h"
#include "Mapper43.h"
#include "Mapper50.h"
#include "Mapper57.h"
#include "Mapper58.h"
@ -216,7 +217,7 @@ Supported mappers:
-----------------------------------------------------------------
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10| 11| 12| 13| 14| 15|
| 16| 17| 18| 19|...| 21| 22| 23| 24| 25| 26| 27| 28| | | 31|
| 32| 33| 34| 35| 36| 37| 38|---| 40| 41| 42|---| 44| 45| 46| 47|
| 32| 33| 34| 35| 36| 37| 38|---| 40| 41| 42| 43| 44| 45| 46| 47|
| 48| 49| 50| 51| 52| 53|???|???| 56| 57| 58|===| 60| 61| 62| 63|
| 64| 65| 66| 67| 68| 69| 70| 71| 72| 73| 74| 75| 76| 77| 78| 79|
| 80|===| 82| 83|===| 85| 86| 87| 88| 89| 90| 91| 92| 93| 94| 95|
@ -310,6 +311,7 @@ BaseMapper* MapperFactory::GetMapperFromID(RomData &romData)
case 40: return new Mapper40();
case 41: return new Caltron41();
case 42: return new Mapper42();
case 43: return new Mapper43();
case 44: return new MMC3_44();
case 45: return new MMC3_45();
case 46: return new ColorDreams46();