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player/Project/Src/NES/mapper/122.cpp
2025-06-27 00:32:57 +08:00

32 lines
720 B
C++

#ifdef _NES_MAPPER_CPP_
/////////////////////////////////////////////////////////////////////
// Mapper 122
void NES_mapper122::Reset()
{
// set CPU bank pointers
set_CPU_banks(0,1,2,3);
}
void NES_mapper122::MemoryWriteSaveRAM(uint32 addr, uint8 data)
{
if(addr = 0x6000)
{
uint8 chr_bank0 = data & 0x07;
uint8 chr_bank1 = (data & 0x70) >> 4;
set_PPU_bank0(chr_bank0*4+0);
set_PPU_bank1(chr_bank0*4+1);
set_PPU_bank2(chr_bank0*4+2);
set_PPU_bank3(chr_bank0*4+3);
set_PPU_bank4(chr_bank1*4+0);
set_PPU_bank5(chr_bank1*4+1);
set_PPU_bank6(chr_bank1*4+2);
set_PPU_bank7(chr_bank1*4+3);
}
}
/////////////////////////////////////////////////////////////////////
#endif