We are not aware of any Pascal compilers currently available for A/UX. The two listings below are rather old, but you may want to check with them just in case.
Virginia Tech
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Virginia Tech was offering their Pascal compiler for A/UX. As of September, 1989, the compiler had 400 to 500 users on the Tech campus. Distribution is by way of a site-license basis to other universities.
However, Matt Davis, one of the developers, indicated a willingness to work with commercial users. For more information, E-mail Matt Davis directly at the following Bitnet address:
davism@vt.opus.cs.vt.edu
Axis Digital
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Axis Digital of France had a product available for A/UX 1.1 called HCR/Pascal. It's a translator from Pascal (ISO DP7185, ANSI, with UCSD-extensions string) to C.