ref: 8561a843070582d48ef7f99e1138941c3509975f dir: /sys/games/lib/life/spark2/
xx......................xx x.x..x..x..x..x..x..x..x.x ..x..xxxx..xxxx..xxxx..x.. x.x..x..x..x..x..x..x..x.x xx......................xx