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Date:      Sat, 16 Sep 1995 05:42:15 -0700 (PDT)
From:      Brian Litzinger <brian@MediaCity.com>
To:        samuelc@HK.Super.NET (Mr. Samuel TinLok Chan)
Cc:        questions@FreeBSD.org
Subject:   Re: AHA-2940 problem
Message-ID:  <199509161242.FAA25463@easy1.mediacity.com>
In-Reply-To: <Pine.SUN.3.91.950916201424.2049A-100000@is1.hk.super.net> from "Mr. Samuel TinLok Chan" at Sep 16, 95 08:22:50 pm

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> 
> I have purchase a FreeBSD version 2.0.5. When I boot up my machine with 
> the boot floop, it couldn't found my SCSI hard disk. I am using a mother 
> board with build-in AHA-2940. I have tried to use the "Config" utility to 
> alter the setting of my SCSI controller, however, I couldn't found the 
> device "ahc0" in the listing.("ahc0" is the device name of AHA-2940 
> specified in the file "hardware") What's wrong with my kernel? Am I 
> purchased a wrong version of FreeBSD? Please help me to fixed this 
> problem because I am hurry to install the FreeBSD, thanks a lot!

The problem, IMHO, is that you don't really have a 2940.

I believe I tried a motherboard similar to the one you are using.

The "built-in 2940" on the motherboard wasn't quite a 2940.  It had
3 SCBs instead of 16, among other things.

The first major problem was that it returned a different PCI DEVICE ID
than the a real 2940 does.  But even after correcting for that the
aic7870 device driver gets into an infinite loop in one of its routines
just as the file systems are mounted.

Brian Litzinger
brian@easynet.com



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