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From: cademy@sdsu.UUCP
Newsgroups: comp.bugs.4bsd,comp.unix.wizards
Subject: Re: Problem with DMF-32's on 4.3BSD
Message-ID: <2537@sdsu.UUCP>
Date: Wed, 28-Jan-87 11:41:05 EST
Article-I.D.: sdsu.2537
Posted: Wed Jan 28 11:41:05 1987
Date-Received: Fri, 30-Jan-87 02:12:50 EST
References: <640@unrvax.UUCP> <5180@mimsy.UUCP>
Organization: San Diego State University, Math/Sciences Dept.
Lines: 29
Summary: Emulex DMF-32 solution
Xref: watmath comp.bugs.4bsd:153 comp.unix.wizards:731

In article <5180@mimsy.UUCP>, chris@mimsy.UUCP (Chris Torek) writes:
> In article <640@unrvax.UUCP> ron@unrvax.UUCP (Ron Sheen) writes:
> >... under 4.3 the Emulux DMF-32 is losing characters while DEC's
> >works fine.
> 
> The 4.3BSD DMF driver relies on an undocumented feature of the DEC
> DMF32.  As it is undocumented, Emulex did not implement it.  Fixes
> have been posted in the past; ask your 4.3BSD neighbors for a copy.
> Perhaps even Emulex have the fix (if not, send it to them and let
> them tell their customers---why not?, they do it for VMS).

Emulex DOES have a fix for the DMA problem on their CS-21 board.  
After many months, I finnally got them to send me a set of proms.  
I beleive that their regular cost for the new set is $400.  I was 
running with rev. e proms, and the ones I have now are rev. h.  
(These are the 12 chips on the right hand side of the board, numbered 
848 - 859.  The numbers are followed by a letter, indicating the 
revision level.)  A switch must also be changed on the board to tell 
it the new proms are 2K instead of 1K proms.  Check with your Emulex
representitive about the new proms, they DO work!  This, being a
hardware fix, does allow DMA to be enabled, and things will work
smoothly.

Robert Cademy

System Manager
San Diego State University

UUCP:  sdcsvax!sdsu!cademy