AEK recently uploaded this to Bitsavers (thanks Al!): http://bitsavers.trailing-edge.com/bits/Softech/Macintosh_UCSD_Pascal.zip It was a surprise to re-learn of the port of UCSD p-System done for compact Macintosh. The diskettes were labelled: Softech Microsystems MacAdvantage UCSD Pascal UCSD Pascal 1 : V010.1B <-- diskette 1 UCSD Pascal 2 : V009.1B <-- diskette 2 It is not quite like the usual ports where the p-System ran stand-alone with its unique look-and-feel; this Macintosh port uses the System/Finder to host Applications that appear to mirror the functionality of the integrated programs from the p-System, so the editor is Editor, Pascal compiler is Compiler and so on. however, the Editor has Bill Duvall from Consulair Corporation in the About box. Bill/Consulair would later release the Lightspeed Pascal / C compilers (that were eventually sold to Symantec). This port dates from late 1984, and is running with System 1.1 and Finder 1.1g The p-System interpreter is sitting in the Pascal Folder along with a "Pascal Runtime", I guess similar to the usual p-System BIOS. Some screenshots here running via the vMac emulator: https://goo.gl/photos/UFPSru2aeTohQiLQ6 There are several posts on usenet about these early p-Systems ports, and some commentary about the Duvall Editor: https://groups.google.com/d/msg/fa.info-mac/JYqRwMNV1Y8/iMYwCb_I3XYJ https://groups.google.com/d/msg/fa.info-mac/lMjtNcbIkBw/oUwObvvddIwJ https://groups.google.com/d/msg/fa.info-mac/meJU-ITiDa0/U2dqBWKUK7wJ