mirror of
https://github.com/libretro/Mesen.git
synced 2024-11-24 01:29:41 +00:00
32 lines
697 B
C++
32 lines
697 B
C++
#pragma once
|
|
#include "stdafx.h"
|
|
#include "BaseMapper.h"
|
|
|
|
class Mapper61 : public BaseMapper
|
|
{
|
|
protected:
|
|
virtual uint16_t GetPRGPageSize() { return 0x4000; }
|
|
virtual uint16_t GetCHRPageSize() { return 0x2000; }
|
|
|
|
void InitMapper()
|
|
{
|
|
SelectPRGPage(0, 0);
|
|
SelectPRGPage(1, 1);
|
|
SelectCHRPage(0, 0);
|
|
}
|
|
|
|
void WriteRegister(uint16_t addr, uint8_t value)
|
|
{
|
|
uint8_t prgPage = ((addr & 0x0F) << 1) | ((addr >> 5) & 0x01);
|
|
if(addr & 0x10) {
|
|
SelectPRGPage(0, prgPage);
|
|
SelectPRGPage(1, prgPage);
|
|
} else {
|
|
SelectPRGPage(0, prgPage & 0xFE);
|
|
SelectPRGPage(1, (prgPage & 0xFE) + 1);
|
|
}
|
|
|
|
SetMirroringType(addr & 0x80 ? MirroringType::Horizontal : MirroringType::Vertical);
|
|
}
|
|
};
|