Looking for PNX, UNIX for Perq 2

[John_C._Keller.Roch803 at xerox.com]

I have access to several Perq2's. (A neat machine and rather cheap on the
used market.) I understand that a few years ago someone, maybe at CMU,
ported UNIX to it. Does anyone know about PNX, and how I might get access
to it.
		-John Keller