enum screen_mirroring {
	M_HORIZONTAL,
	M_VERTICAL,
	M_FOUR,
};

struct Rom {
	char *prg_rom;
	char *chr_rom;
	size_t prg_rom_size;
	size_t chr_rom_size;
	uint8_t mapper;
	enum screen_mirroring mirror;
};

void parse_rom(const uint8_t *data, size_t data_len, struct Rom *rom);
void free_rom(struct Rom *rom);