struct mapper_001_0 {
	uint8_t shift;
	uint8_t shift_count;
	uint8_t control;
	uint8_t prg_bank;
	uint8_t chr_bank0;
	uint8_t chr_bank1;

	uint8_t *prg_rom_0;
	uint8_t *prg_rom_1;
	uint8_t *chr_bank_0;
	uint8_t *chr_bank_1;
} __attribute__((packed, aligned(64)));