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Date:      Sun, 5 Jan 1997 01:15:06 +0100
From:      j@uriah.heep.sax.de (J Wunsch)
To:        tedm%toybox@agora.rdrop.com
Cc:        freebsd-bugs@FreeBSD.org (FreeBSD bugs list)
Subject:   Re: conf/2367: Buslogic SCSI driver bad probe of 742A early revision IRQ and version
Message-ID:  <Mutt.19970105011506.j@uriah.heep.sax.de>
In-Reply-To: <9701040606.AA0046@agora.rdrop.com>; from tedm@agora.rdrop.com on Jan 3, 1997 21:45:09 %2B0900
References:  <9701040606.AA0046@agora.rdrop.com>

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As tedm@agora.rdrop.com wrote:

> > It's been a while ago that i've been using a Bt742A.  I remember that
> > it wasn't totally unproblematical for me either.

> Kind of ironic, since the monolithic Buslogic driver was derived
> from driver code from the 742A EISA card!

Yes and no: these cards are dual-personality, and they have been used
in their ISA personality only in the beginning.

> I tried disabling the bt driver, this did make the above error
> message about bt unit number 1 too high go away, and the kernel did
> boot properly.

Ok.  So the basic problem of your PR is solved then?

>  This is probably something that should go into the install FAQ, is
> the same problem present with the Adaptec 1740 card responding as a
> 1540 as well?

Basically yes.  ISTR that you also have to setup a BusLogic card for
BSD/OS to not match one of the ISA addresses, for the very same
reason.

I've had a look at the FAQ, there's a large section about the 742A,
but this detail is indeed missing.

> I also tried switching the interrupt to IRQ12 with the bt driver
> disabled, the EISA probe _still_ thinks that the interrupt is at IRQ
> 9, and the boot process halts.

That's surprising.  I never had problems of this kind with the EISA
code.  Maybe your mainboard is lying?  (Mine was a SiS chipset one.)

My Bt742A always ran at IRQ 11 or 12 (i eventually forgot which one).

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)



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