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To: mar7@cec.wustl.edu (Matt Rosenberg)
cc: questions@freebsd.org
Subject: Re: Multiple Adaptec 2742W's 
In-reply-to: Your message of "Thu, 17 Aug 95 13:49:30 CDT."
             <9508171849.AA05085@cec.wustl.edu> 
Date: Thu, 17 Aug 1995 12:13:57 -0700
From: "Justin T. Gibbs" <gibbs@freefall.FreeBSD.org>
Sender: questions-owner@freebsd.org
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>On Thu, 17 Aug 1995 at 07:54:26 -0700, 
>Adaptec actually recommends using the same IRQ if the two cards are the
>model (which they are here).  When trying the same IRQ, I've been using IRQ
>11.  When using the separate IRQ's, I've been using 11 and 12.  I've checked
>closely for possible conflicts, but they do not exist.  From the very
>beginning I've had the BIOS disabled for the second adaptor.

And I tell you that FreeBSD does not support haveing them on the same
IRQ.  They must be different.

>>>BTW, although the Seagate 43401N _is_ a wide SCSI device if the 
>>>2742W is configured to "initiate wide negotiation" for the 
>>>43401N, FreeBSD 2.0.5 will not probe the device correctly.  It 
>>>doesn't make a difference to DOS whether that flag is turned 
>>>on.
>>
>>Can you try the latest SNAP-shot floppy?  Its not quite the latest
>>code, but it is much closer than 2.0.5.
>
>I'm using it as an active, up and running, web server, so I don't want to
>take it down many more times or much longer than possible.  I did find a fix
>to that problem.  Just turn off the "initiate wide negotiation" flag for the
>drive from the Adaptor configuration tool in DOS.  When this flag is left
>on, FreeBSD reads the drive as a "S441 00427 1N" instead of "SEAGATE 43401N
>0104"; the type is read as "type 0 fixed SCSI 3" instead of "type 0 fixed
>SCSI 2"; the size is read as 6528MB instead of the correct 2777MB; and this
>all causes the partition table to become undreadable, so I don't even have a
>chance to tell it the correct geometry.  DOS doesn't seem to care if the
>flag is on or off, and the manual for the drive does say that it is a "wide
>SCSI" device, and its only I/O port is a 68-pin SCSI 3 port.  *shrug* I
>don't know, I found a work-around.  Give this to the hackers who wrote the
>driver for the adaptor.

Um... I am the "hacker who wrote the driver".  The problem you're seeing
has to do with wide residue on dealing with a wide device and has been
fixed with the latest driver.  If you're running a Web site, you should
be running -stable anyway, so I would strongly suggest you upgrade
especially if you are planning to use the 2742W.

>=============================================
>Matt Rosenberg
>Washington University School of Law
>St. Louis, MO, USA
>
>mar7@cec.wustl.edu ; rosenbem@wulaw.wustl.edu
>http://www.cec.wustl.edu/~mar7/
>=============================================
>

--
Justin T. Gibbs
===========================================
  Software Developer - Walnut Creek CDROM
  FreeBSD: Turning PCs into workstations
===========================================