High Quality Content by WIKIPEDIA articles! MacWorks Plus was a complete implementation (port) of the Macintosh Plus 128K ROM on the Apple Lisa and Macintosh XL computer systems, and introduced in August 1988. It was developed for Sun Remarketing of Cache Valley, Utah, under license from Apple Inc., by a contract developer named Chuck Lukaszewski, who was responsible for versions up through 1.1(h), which supported up to Macintosh System 6.0.3. Dafax Processing Corp. with the assistance of Query Engineering, Inc. then further developed the environment to MacWorks Plus II, which continued Macintosh system support up to System 6.0.8 with the Basic version, and introduced a Pro version to extend support to the maximum possible for any 68000 processor: System 7.5.5. Prior to MacWorks Plus, the maximum system supported by its predecessor MacWorks XL was System 3.2.