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Date:      Sat, 17 Oct 1998 15:04:49 +1000
From:      Bruce Evans <bde@zeta.org.au>
To:        jkh@time.cdrom.com, matt@zigg.com
Cc:        current@FreeBSD.ORG
Subject:   Re: sysinstall "probing devices" hangs only on 3.0-199810??-BETA, not on 2.2.7-RELEASE boot disk
Message-ID:  <199810170504.PAA01112@godzilla.zeta.org.au>

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>First time I tried it, it seemed to hang after the ep0 probe returned
>"not found at 0x300".  It had probed all my hardware up until that
>point correctly, however.
>
>What comes after ep0 in the default lineup?  Maybe I can try
>disabling that.

Some of the probes for ISA ethernet cards are invasive.  Most likely
it's something before ep0, or ep0 itself, or something NOT before ep0
(see below) that screws up the following probes (whether or not there
is any hardware for the following probes to succeed on).

>> I saw that once myself, but only when I went and trimmed out
>> everything and its brother with the visual userconfig.  When I just
>> whacked return the next time through, editing nothing in the kernel
>> configuration, it went fine.  Could you perhaps try this so we could
>> narrow things down a bit?

Leaving things alone can work by allowing the actual device to be found
early so that most of the invasive probes are skipped because they would
conflict.  E.g., I have an ed0 at 0x300.  ed is "sensitive hardware"",
so it is always probed early.  However, the default ed0 is at 0x280.
If I don't change that, then ed0 is not found (early or at all) and the
probe sequence hangs near ep0, apparently because some invasive probe
gets confused when it finds ed0 at 0x300.

Bruce

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