1struct MBC5 : MMIO { 2 bool ram_enable; //$0000-1fff 3 uint16 rom_select; //$2000-2fff + $3000-3fff 4 uint8 ram_select; //$4000-5fff 5 6 uint8 mmio_read(uint16 addr); 7 void mmio_write(uint16 addr, uint8 data); 8 void power(); 9} mbc5; 10 11