'''As a result, the earlier Arcade Games/Systems are not especially more powerfull than an Amstrad CPC computer, but were Discrete Logic and Hardware based while a CPC is mostly Software based.'''
Later Arcade system were more often fit with 16bit CPU ([[68000 ]] is a common example) yet some were still equipped with Z80 as co-CPU.
*Sega MegaDrive/Genesis is basically a downgraded arcade system, with a 68000 as main CPU and a Z80 as sound co-CPU. While the Z80 could mostly only used for sounds as a MegaDrive, it was also used to emulate Retro-Compatibility with SegaMaster System console (Z80 based system), provided the right cartridge adaptator.