Changes

PowerVR 2-based board from [https://en.wikipedia.org/wiki/Gaelco Spanish company]. Not their early 'Gaelco 3D' board from 1996-1998. There is also an [https://github.com/aaronsgiles/Gaelco3D inactive emulator] for the unrelated earlier Gaelco 3D system, and [http://adb.arcadeitalia.net/dettaglio_mame.php?game_name=gaelco_serial&search_id=&lang=en MAME] [https://github.com/mamedev/mame/blob/master/src/mame/driversgaelco/gaelco3d.cpp supports] that one.