#ifdef CARTRIDGE_CPP

uint8 Cartridge::MBC2::mmio_read(uint16 addr) {
  if((addr & 0xc000) == 0x0000) {  //0000-3fff
    return cartridge.rom_read(addr);
  }

  if((addr & 0xc000) == 0x4000) {  //4000-7fff
    return cartridge.rom_read((rom_select << 14) | (addr & 0x3fff));
  }

  if((addr & 0xfe00) == 0xa000) {  //a000-a1ff
    if(ram_enable) return cartridge.ram_read(addr & 0x1ff);
    return 0x00;
  }

  return 0x00;
}

void Cartridge::MBC2::mmio_write(uint16 addr, uint8 data) {
  if((addr & 0xe100) == 0x0000) {  //0000-1fff [d8=0]
    ram_enable = (data & 0x0f) == 0x0a;
    return;
  }

  if((addr & 0xe100) == 0x2100) {  //2000-3fff [d8=1]
    rom_select = (data & 0x0f) + ((data & 0x0f) == 0);
    return;
  }

  if((addr & 0xfe00) == 0xa000) {  //a000-a1ff
    if(ram_enable) cartridge.ram_write(addr & 0x1ff, data & 0x0f);
    return;
  }
}

void Cartridge::MBC2::power() {
  ram_enable = false;
  rom_select = 0x01;
}

#endif