There was also the in-between era of arcade hardware based on home consoles, like the Triforce platform (derived from the GameCube) or Chihiro platform (derived from the original Xbox). For those the easiest approach is to extend console emulators to also support their related arcade platforms, or hack the arcade games to transform them into standard console games, rather than having MAME reinvent the wheel.
Chihiro and Triforce might have had significant games, but arcade hardware based on home consoles runs much older: Master System, Playstation, Genesis, Neo-Geo, Playstation 2, NES, Dreamcast, Playstation 3, Saturn, have one (or more!) arcade counterparts.
