Here is (at last) some statust about VAX port. I'm sorry about
unanswered mails, hope this will make things clearer.

Currently are VAX 11/750 and MicroVAX II CPUs supported.
Disk controllers with MSCP should work, tested are UDA50 on Unibus
and RQDX3 and KDA50 on Q22 bus. These should work with all
RA?? and RD?? disks. (Tested are RA81/82/90 and RD52/53/54).
Tape controllers that use TMSCP should also work, this is only
tested with TK50 and DILOG/Exabyte 8200 on Q22 bus.
Network card that works: DEUNA/DELUA on Unibus and DEQNA/DELQA
on Q22 bus.

What is not supported (but often asked) is:
 * Massbuss disks/tapes.
 * Vaxstation 2000
 * no graphical devices at all.

I have no idea if those Q22 -> Unibus or Unibus -> Q22 cards
will work.

About kernel: Runs stable. See BUGS_MISSINGS for info.
About Userspace: Runs stable with 4.3BSD binaries, but some
programs from NetBSD will not work. libm isn't fixed yet,
nor is dynamic linked libraries. See BUGS_MISSINGS in
vax source directory for more about this.
Boot blocks supports Massbuss and MSCP disks on both 
uVAX and 11/750.
Hope I have made things clearer :-)
-- Ragge