The MacAdvantage: UCSD Pascal is a commercial version of the UCSD
p-System version IV Pascal editor and compiler. p-System was available
for many computer systems in the early 1980s including the Mac.

Later versions were sold by Pecan Software Systems under the name
[Pecan Pascal][1].

Compatibility
Architecture: 68k

Best results when booted with the System 1.1(!) system file on disk 1.
Manual says it will work on Mac 128k, 512k and Lisa 2 with MacWorks.

  [1]: http://macintoshgarden.org/apps/the-pecan-power-system-ucsd-pascal