Wanted: info on Comtal Vision One/20 vs. Unibus devices on VAX UNIX

[ado at elsie.UUCP]

A researcher who also has a Comtal Vision One/20 sent me a note reading in part:

> We're running. . .on a VAX 11/780 under 4.2bsd. . .
> . . .from time to time we experience some serious 
> side-effects with image transfers to and from our Comtal.  (Hung 
> processes, locked DMF-32, and even an occasional corrupted file system.)
> Comtal's best advice is to add a separate UBA for the Comtal
> interface, a solution that's a bit beyond our budget.  Can you put
> me in touch with some users with similar installations who may
> have resolved the problems we're having?

We don't have such problems here at elsie--but it's different software and
hardware (More/bsd 4.3 on an 11/750; not much on the UBA, for example, no
UDA50).  So I'll pass the question on:  has anyone out there
resolved the problems the researcher is having?  If so, or even if you're
simply have a UNIX-VAX-Comtal system, I'd appreciate hearing from you.
--
UNIX is a registered trademark of AT&T.
Other trademarks of AT&T, DEC, and Comtal are present in abandon above.
--
	UUCP: ..decvax!seismo!elsie!ado   ARPA: elsie!ado at seismo.ARPA
	DEC, VAX, Elsie & Ado are Digital, Borden & Ampex trademarks.