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Date:      Sun, 21 Nov 1999 14:18:50 +0100 (CET)
From:      Wilko Bulte <wilko@yedi.iaf.nl>
To:        gallatin@cs.duke.edu (Andrew Gallatin)
Cc:        freebsd-scsi@FreeBSD.ORG, freebsd-alpha@FreeBSD.ORG
Subject:   Re: strange panic on Alpha, SCSI disk *type* related
Message-ID:  <199911211318.OAA38385@yedi.iaf.nl>
In-Reply-To: <14390.62100.488036.94592@grasshopper.cs.duke.edu> from Andrew Gallatin at "Nov 20, 1999  2:21:37 pm"

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As Andrew Gallatin wrote ...

> <...>
> 
>  > isp0: Board Revision 1040B, resident F/W Revision 2.10.0
> 
> <..>

New evidence:

It looks like the problems are Ultra SCSI related. Meaning that if I 
use the EEROMCFG.EXE utility*) and set everything to FAST-10 mode
(as opposed to UltraSCSI) the system at least boots OK. I.e. it does
not panic anymore:

Mounting root from ufs:/dev/dda0 at isp0 bus 0 target 0 lun 0
da0: <IBM DDRS-34560W S97B> Fixed Direct Access SCSI-2 device 
da0: 3.906MB/s transfers (1.953MHz, offset 8, 16bit), Tagged Queueing
Enabled
da0: 4357MB (8925000 512 byte sectors: 255H 63S/T 555C)
a0a
WARNING: preposterous clock chip time
 -- CHECK AND RESET THE DATE!
swapon: adding /dev/da0b as swap device

etc.

I'm not too thrilled about the negotiated SCSI parameters, but it
sure beats a panic ;-)

Wilko


*) run from the ARC console which was in turn booted from floppy; 
cute that the board does not have both ARC and SRM onboard at the same time.
The ARC image can be found on the Alpha Eval Board SDK cdrom.


-- 
|   / o / /  _  	Arnhem, The Netherlands	  - Powered by FreeBSD -
|/|/ / / /( (_) Bulte 	WWW : http://www.tcja.nl  http://www.freebsd.org


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