System 6.0.3 - 7.5.5 1.1.1 - 3.1.1 Motorola 68882 $4400 or $4900 with HD (US) Decline Unfortunately for Apple and for A/UX users, the UNIX niche was a costly business in the early 1990s. Apple never ported A/UX to PowerPC Macintoshes (though A/UX 4.0 was rumored to have been an OSF/1