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player/Project/Src/NES/mapper/022.cpp
2025-06-27 00:32:57 +08:00

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#include "nes_mapper.h"
/////////////////////////////////////////////////////////////////////
// Mapper 22
void MAP22_Reset()
{
// set CPU bank pointers
// set_CPU_banks(0,1,num_8k_ROM_banks-2,num_8k_ROM_banks-1);
set_PPU_banks(0,1,2,3,4,5,6,7);
}
void MAP22_MemoryWrite(uint16 addr, uint8 data)
{
switch(addr)
{
case 0x8000:
{
set_CPU_bank4(data);
}
break;
case 0x9000:
{
data &= 0x03;
if(data == 0)
{
set_mirroring(0,1,0,1);//´šÖąžľĎńInfoNES_Mirroring( 1 ); //0101
//set_mirroring(NES_PPU::MIRROR_VERT);
}
else if(data == 1)
{
set_mirroring(0,0,1,1);//ËŽĆ˝žľĎńInfoNES_Mirroring( 0 ); //0011
//set_mirroring(NES_PPU::MIRROR_HORIZ);
}
else if(data == 2)
{
set_mirroring(1,1,1,1);
}
else
{
set_mirroring(0,0,0,0);
}
}
break;
case 0xA000:
{
set_CPU_bank5(data);
}
break;
case 0xB000:
{
set_PPU_bank0(data >> 1);
}
break;
case 0xB001:
{
set_PPU_bank1(data >> 1);
}
break;
case 0xC000:
{
set_PPU_bank2(data >> 1);
}
break;
case 0xC001:
{
set_PPU_bank3(data >> 1);
}
break;
case 0xD000:
{
set_PPU_bank4(data >> 1);
}
break;
case 0xD001:
{
set_PPU_bank5(data >> 1);
}
break;
case 0xE000:
{
set_PPU_bank6(data >> 1);
}
break;
case 0xE001:
{
set_PPU_bank7(data >> 1);
}
break;
}
}
void MAP22_Init()
{
NES_Mapper->Reset = MAP22_Reset;
NES_Mapper->Write = MAP22_MemoryWrite;
}