*BSD News Article 94532


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From: c_chaos@chaosnet.wahnapitae.on.ca (Andrew Costa)
Newsgroups: comp.os.linux.misc,comp.os.linux.advocacy,comp.unix.bsd.misc,comp.os.ms-windows.advocacy
Subject: Re: Linux vs BSD
Date: 27 Apr 1997 03:40:12 GMT
Organization: Haywire Engineering
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On 26 Apr 1997 13:13:41 -0700, Tim Smith <tzs@halcyon.com> wrote:
>
>There's something odd with Linux and at least some Adaptec controllers.
>I've got three very different machines at work, that all have host adaptors
>in the 2940 family.  I've tried several Linux distributions on them all,
>and they all install OK until the point where they need to boot the
>installed kernel.  Then they hang after the driver for the host adaptor
>complains about something being wrong with interrupts (I don't remember
>the exact message).  Putting an IDE drive in one of them and installing
>Linux on that, and telling the setup program that I don't have any SCSI
>host adaptors, let me get installed, so now I, if I get time, try to track
>down the problem.

The SCSI HOWTO has a few things to say about the Adaptec 2940 family:

[begin quote]

5.6.  Adaptec 274x, 284x (Standard) 294x (ALPHA)

A newer version which also supports the Adaptec 294x boards is
available at

     ftp://ftp.ims.com/pub/Linux/aic7xxx

Supported Configurations:

			274x		284x		294x
     EISA Slots	      :	1-12		N/A		N/A
     Ports	      :	N/A		ALL		ALL
     IRQs	      :	ALL		ALL		ALL
     DMA Channels     :	N/A		ALL		N/A

     IO		      :	port mapped, bus master

Autoprobe override :

kernel command line :

     aha274x=extended
     (to force extended mapping)

Notes:

1. BIOS MUST be enabled

2. The B channel on 2742AT boards is ignored.

3. CONFIG_PCI must be set if you are using a PCI board.

[end quote]


The "ALPHA" bit is indicative.  Not guaranteed to work and all that.

Anyway, maybe this'll help somewhat, as a starting point...?