Mesen/Core/SealieComputing.h
2017-04-21 12:43:09 -04:00

31 lines
959 B
C++

#pragma once
#include "stdafx.h"
#include "BaseMapper.h"
class SealieComputing : public BaseMapper
{
protected:
uint16_t GetPRGPageSize() override { return 0x4000; }
uint16_t GetCHRPageSize() override { return 0x2000; }
uint32_t GetWorkRamSize() override { return 0x2000; }
uint32_t GetChrRamSize() override { return 0x8000; }
uint16_t RegisterStartAddress() override { return 0x8000; }
uint16_t RegisterEndAddress() override { return 0xFFFF; }
void InitMapper() override
{
SelectPRGPage(1, -1);
//"It is hard-wired for vertical mirroring", but no need to enforce this, just need proper iNES headers.
//SetMirroringType(MirroringType::Vertical);
//"contains 8KB of WRAM mounted in the usual place"
SetCpuMemoryMapping(0x6000, 0x7FFF, 0, PrgMemoryType::WorkRam, MemoryAccessType::ReadWrite);
}
void WriteRegister(uint16_t addr, uint8_t value) override
{
SelectCHRPage(0, value & 0x03);
SelectPRGPage(0, (value >> 2) & 0x07);
}
};