The GameBoy's technical specs are: A Z80-like
CPU running at 4.194304MHz, 8Kb of RAM, game ROMS range in size
from 16Kb to 512Kb, 8Kb of VideoRAM, 4 sound channels, a 160x144
LCD screen capable of displaying just 4 shades of gray, a maximum
of 40 sprites with maximum sizes of 8x8 or 8x16 and it lasts
about 35 hours on 4AA batteries.