Date: Sat, 24 Feb 1996 16:01:41 -0600
From: Chuck Cranor <chuck@dworkin.wustl.edu>
Message-Id: <199602242201.QAA03612@dworkin.wustl.edu>
To: thorpej@nas.nasa.gov
Subject: Re: VME Ethernet with NetBSD/sparc 1.1
Organization: Washington University,  St. Louis MO.
Cc: port-sparc@NetBSD.ORG
Sender: owner-port-sparc@NetBSD.ORG
Precedence: list

> > ie1 at vmes0 addr 0xffe88000 vec 0x75: RAM CONFIG FAILED!

>I'm not sure that it's possible to use the DVMA-savvy boards on the 
>4/100.  I think you're pretty much limited to serial boards, and the 
>like.  The 4/100 was pretty weak in the VME arena ... I think the one 
>slot was kind of token...


true, but ...

the "ie1" VME board has local RAM on it.   all the DMA that the "ie" chip
does is between the chip and the local RAM.    the processor must map this
RAM into kernel memory and use something like bcopy (wcopy actually) to 
move data between main memory and the VME board.    so, there shouldn't
be any DVMA involved with the "ie1" card.

as I told mike yesterday in an email, I checked my "ie1" card (which is 
in a 4/260) and it configs just fine with -current.    so my guess is
that either mike's card is configured wrong, or there is a quirk (bug) 
with the code and the 4/110 processor that is causing this problem.

one thing to check is the px03 and px04 VME jumpers which should both
be "OUT" for the "ie1" card.

cheers,
chuck
-- 
Chuck Cranor, Graduate Student
Computer and Communications Research Center
Washington University, St. Louis MO  USA
E-Mail: chuck@maria.wustl.edu / cranor@udel.edu