The 0.217 update was more than just a standard monthly patch; it was a "housekeeping" milestone for the MAMEdev team .
MAME 0.217 added support for a wide variety of hardware, from arcade cabinets to obscure handhelds:
: A major highlight was the recovery of the Sega Model 1 coprocessor TGP programs. This made legendary titles like Star Wars Arcade and Wing War fully playable for the first time. Understanding MAME 0.217 ROM Sets