*BSD News Article 34003


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From: troyc@tekgen.bv.tek.com (Troy Curtiss)
Newsgroups: comp.os.386bsd.questions
Subject: BT445C Problems Fixed...
Date: 7 Aug 1994 17:00:16 -0700
Organization: Tektronix, Inc., Beaverton, OR, USA
Lines: 32
Message-ID: <323sig$2n1@tekgen.bv.tek.com>
NNTP-Posting-Host: tekgen.bv.tek.com

All of my problems regarding the BT445C are fixed, thanks
to all the suggestions from net.freebsd'ers.  Throughout
this ordeal, there are a few points that surfaced that
could help anybody else trying to get a BT445C SCSI VLB
card going in their FreeBSD box.  Here's a summary:

1) The BT445C is NOT the same as the BT445S for which
  their is a wealth of FAQ info on setting up.  The
  BT445C has NO jumpers to set IRQ's, this is all done
  in EEPROM from the setup bios.  The card functionally
  seems identical to its predecessor though, probably
  due to the same chipset.  :)

2) My computer just flat wouldn't work if booted from the
  kcopy_bt floppy, it would die shortly after the ISA probe.
  Changing the EEPROM interrupt to IRQ12 helped a little, but
  the kernel still couldn't talk to the card correctly.  The
  solution I came to was recompiling the generic_bt kernel and
  pointing the bt0 driver to IRQ11 (BT445C default) on a 
  different machine and using that to boot from.  I suspect the
  above mentioned problems are something the new EEPROM version
  of the card throws into the equation (maybe a firmware bug??).

If anybody needs a copy of the compiled kernel for IRQ11 or the
whole boot floppy that saved my weekend from being a total
disaster can send me email.  If there is enough response, I will
post it on an anonymous ftp site (either locally or somewhere
well known).  Thanks again for everybody's help.

Troy Curtiss, HW/SW Engineer, Merix Corporation
Forest Grove, OR USA
troyc@trask.merix.com