Help needed with DR11-W driver

[der Mouse]

     Help!  I'm going nuts!  We  have a VAX-11/750 running 4.2bsd and we
recently got a  DR11W card as  an interface  to a small  machine  with a
DR11W emulator  (looks  like a  DR11W  to  another DR11W).  I cheerfully
started in on the driver  for it (has to be a custom driver because some
ad hoc  protocol  has to  be  done at  the driver level  to  get speed).
Trouble showed up shortly after I got it appearing to work.  After about
30 seconds of  exerciser  transfers,  someone  (presumably  the  driver)
corrupts something and we get messages like (usually inode 2):

bad dir entry ino 2 offset 0: mangled entry
bad dir entry ino 2 offset 512: mangled entry
bad dir entry ino 2 offset 1024: mangled entry
bad dir entry ino 2 offset 1536: mangled entry
bad dir entry ino 2 offset 2048: mangled entry

     Shortly  thereafter, the  system panics (not  consistently the same
panic) and  we crash.   Once it  managed to write  the damaged directory
back to disk first and we had to pull the partition off backups.

     Is  there a  working DR11W driver  out there  I  could  look at for
ideas?  Or does anyone have any other suggestions?

     Pretty please??
-- 
					der Mouse
				System hacker and general troublemaker
				CVaRL, McGill University

Hacker: One responsible for destroying /
Wizard: One responsible for recovering it afterward