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From: "Koster, K.J." <K.J.Koster@kpn.com>
To: 'Wilko Bulte' <wkb@freebie.xs4all.nl>
Cc: "'freebsd-alpha@freebsd.org'" <freebsd-alpha@FreeBSD.ORG>
Subject: RE: as2100 saga continues: memory trouble? *sigh*
Date: Mon, 3 Dec 2001 20:01:13 +0100 
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Dear Wilko,

> 
> > When I type "show memory" on the monitor prompt I see that 
> > I have one memory
> > board with 128MB (which is good) but it also says "bad 
> > pages 4096" (which I
> > suspect is bad). I cannot remove the one board, for obvious
> > reasons.
> 
> You are in deep sh* ...
>
Yeah, I was just in denial. Thanks for slapping me out of it.

>
> I had a similar AS2100A memory problem and while VMS is smart 
> enough to not use the bad pages, FreeBSD is not as smart. You 
> will need to get a working memory board.
>
Ok.

I know that the topic of in-kernel bad RAM testers/ignorers has been flogged
to death repeatedly. I distinctly remember arguing that they are
unneccessary when you always buy memory boards in pairs. Stung by my own
ignorance.

Suppose that I know the bad memory range, any way of telling FreeBSD not to
use it? Perhaps abuse the option ROM device to claim that memory range for
itself?

>
> [who now regrets having canned the AS2100A]
> 
Grr... :)

    Kees Jan

=====================================================
 You can't have everything.  Where would you put it?
                                     [Steven Wright]

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