DMF-32+4.3BSD+VAX8250=problems (HELP!)

[Leeland Heins]

Any wizards got a quick solution or answer to this problem:

   We just tried to install a DEC DMF-32 in our VAX 8250's uba.  This DMF-32
had previously been in an old 11/730 and had been working when it was removed.
   We are running 4.3 BSD-Tahoe with no relevant modifications.
   We have an Emulex CS21/F which emulates two DFM-32's installed and working
fine in the 8250, this is the first "real" DMF-32 we've tried.  I have been
told that it is the "official" word from DEC that the DMF-32 is questionable
in VAX 8xxx machines, other people have reported that they seem to work.

This is its line from the config file:

device		dmf2	at uba? csr 0160440 flags 0xfc
	vector dmfsrint dmfsxint dmfdaint dmfdbint dmfrint dmfxint dmflint

   This config entry is exactly the same as the entries for our CS21/F,
except for the appropriate modifications for the address and device
number.

The DMF-32 shows up at boot as so:

dmf2: printer synch asynch.
dmf2: at uba0 csr 160440 vec 720, ipl 15

   Things seem to be O.K. up until it prints the "Mon Sep 18 ..." message,
but when it would normally write the login messages out to each of the
ttys with getty enabled we get:

Mon Sep 18 ...
trap type 8, code = 89d55865, pc = 80038128
panic: Segmentation fault
syncing disks... 36 35 30 19 6 done
...

   Getty isn't enabled on any of the ports yet, and nothing is plugged into
any of the ports on the DMF-32.
   Any ideas people have will be greatly appreciated.  Any comments about
buying other multiplexers will be (temporarily at least) disregarded since we
are currently very broke.  If we can't get it to work, we will have to do
without temporarily or install a (ugh!) DZ-11.
   Thanks in advance!

  //|||\\   "Attack of the killer 	Lee Heins, EXNET Programmer
 //-O-O-\\   mutant techno-hippies	Iowa State U. Extension
 ||  v  ||   from Hell"			heins at atanasoff.cs.iastate.edu
 || === ||				...!hplabs!hp-lsd!atanasoff!heins
 || --- ||
/// `|' \\\				Disclaimer: I speak for myself only.