First I would like to offer great thanks to Jonathan - it's good to
see so much progress on the pmax port. I'm afraid I can't help much
with the low-level kernel stuff, but I got a kernel compiled, and I can
confirm that swapping worked then.  There has been changes in the pmax
sources since then (I used somewhat oldish sources), but these are the
things I remember I had to do:
  /sys/arch/pmax/tc/tc.c #includes <pmax/pmax/trap.h>, which does
not exist (at least not in my sources).  I made one and put some extern
declarations into it which tc.c complained about, and that worked ok.
  I also had the same if_tt, random.c, and min.c problems that Simon Burge
has reported.  I've seen your PR on this, Jonathan - has this been
resolved yet?
  While on the subject of PR's, I have a PR (1048) for modf in the
C library for pmax (or rather mips) which seems to have been somewhat
forgotten - could one of you (Ted or Jonathan) check it out? I think it
should be OK.  Also, brk.S and sbrk.S in /usr/src/lib/libc/arch/mips/sys
hasn't been fixed yet - these small changes should be non-controversial.
  I'll try to get back with more reports when I get to compile some
newer kernels.
  Again, thanks to you, Jonathan!

  - Arne H. J.