sentence: the 68030 was used in many models of the apple macintosh ii and commodore amiga series of personal computer , next cube , sun microsystems sun 3/80 desktop workstation ( a member of the '' sun3x '' architecture , where the earlier '' sun3 '' used a 68020 ) , later alpha microsystems multiuser systems , and some descendants of the atari st line such as the atari tt and the atari falcon .