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Date:      Wed, 15 Nov 2000 08:05:54 +0100
From:      Wilko Bulte <wkb@freebie.demon.nl>
To:        Matthew Jacob <mjacob@feral.com>
Cc:        freebsd-alpha@freebsd.org
Subject:   Re: 4.2RC1 hosed on Tlaser
Message-ID:  <20001115080554.A2707@freebie.demon.nl>
In-Reply-To: <Pine.BSF.4.21.0011150837150.68108-100000@beppo.feral.com>; from mjacob@feral.com on Wed, Nov 15, 2000 at 08:40:50AM -0800
References:  <E13w2Kk-0007GP-00@post.mail.nl.demon.net> <Pine.BSF.4.21.0011150837150.68108-100000@beppo.feral.com>

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On Wed, Nov 15, 2000 at 08:40:50AM -0800, Matthew Jacob wrote:
> > failed to send Read to dkb0.0.0.6.0
> > device dkb0.0.0.6.0 no longer valid
> 
> Yatta.....

Rather: Yikes..

> > Booting a pre-installed 4.2-beta is not successful either. 
> > 
> > [handwritten transcript from console]
> > .. boot succeeds ok...
> > dwlpx0 (DWLPA PCI at kft0 hose0)
> > base = 0xb80000000
> > mask = 0xf80000000
> > hacked = 0xb80000000
> > panic: hose encoding hack would clobber base address
> > 
> 
> This is the hacked multi-pci bus stuff which didn't get backported
> to 4.X because it depended on too much else.
> 
> I should note that 4.2 works fine for me (I haven't cut a CD though) on
> the Tlaser's at NASA/Ames. This has to do with whether a PCI implementation
> leaves enough bits at the top of 32 bits for us to store a hose number
> (dwlpx instance in this case).
> 
> Sadness. I always knew this was a risk, but hoped we'd squeak by.

Ah, this was mentioned to me before, but I never saw it in real life.
Our Tlaser is not around long enough in our lab for me to have seen it
before.

> So, basically, a large number of alphas will not work in 4.X because of the
> boot issues (which nobody really understands) and the hose stuff. Crap.

Yep. There are quite some 'red' machine types on www.freebsd.org/~wilko

I guess machines like ES40 , DS20 would require this to be straightened out as
well?

W/
-- 
Wilko Bulte  	 					Arnhem, the Netherlands
wilko@freebsd.org  	http://www.freebsd.org 		http://www.nlfug.nl



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