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To: Gang-Ryung Uh <uh@sed.cs.fsu.edu>
cc: freebsd-current@freebsd.org
Subject: Re: config 
In-reply-to: Your message of "Mon, 25 Mar 1996 22:38:20 EST."
             <199603260338.WAA04421@sed.cs.fsu.edu> 
Date: Mon, 25 Mar 1996 20:56:52 -0800
From: "Justin T. Gibbs" <gibbs@freefall.freebsd.org>
Sender: owner-current@freebsd.org
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>Hi,
>
>   I am running FreeBSD-current (Mar 21 1996).
>   But during the boot time, there is one message
>   annoys me:
>
>     bt: unit number (1) too high
>     bt0 not found at 0x330

Do you have a PCI or ISA Buslogic card?  If its PCI, this is
happening because the config line you have below specifies
both PCI and ISA probes for Buslogic cards, and the ISA probe
can find PCI Buslogic cards using an ISA compatibility address.
Now there are two types of Buslogic cards:

1) Always exports a single address space to both PCI and ISA
   style probes.  This is usually 0x330 or 0x130.  The driver
   will detect and guard against doubly probing a card of this
   type.

2) Has both a high, PCI address (say 0x6000), and a low ISA compatibility
   address that you can disable from the BIOS.  If you have the ISA
   compatibility address enabled and you have ISA probes compiled into
   your kernel, you can doubly probe this card.  The solution is to either
   shorten the config line (see below) to remove ISA probes or to disable
   the ISA compatibility address space in the BIOS for the card.

A config line that only performs a PCI probe looks like:

controller bt0

Why the probe gets the unit number wrong in the diagnostic messages, I
don't know, but I'll look into it.

>
>Thanks.
>--UGR 
>  (uh@cs.fsu.edu)

--
Justin T. Gibbs
===========================================
  FreeBSD: Turning PCs into workstations
===========================================