Date: Wed, 29 Nov 1995 00:06:57 +1100 From: Bruce Evans <bde@zeta.org.au> To: bde@zeta.org.au, dawes@rf900.physics.usyd.edu.au Cc: hackers@FreeBSD.ORG Subject: Re: Problem with sio probe and Mach64 PCI video card Message-ID: <199511281306.AAA30172@godzilla.zeta.org.au>
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>>The change at the end replaces bogus internal array of ports by the ones
>>specified in the config. This requires the config to specify sio2 and
>>sio3 if the ports exist even if they are unusable under FreeBSD due to
>>a conflict, and S3 owners to boot with -c and disable sio3 before the
>>monitor blows up :-). sio3 shouldn't be in GENERIC.
>The patch fixes the problem -- thanks! I don't understand why this means
>that the config must specify ports that are not usable under FreeBSD.
>I think "S3 owners" should be replaced by "IBM8514/A, S3, Mach{8,32,64}
>and any chipset with an 8514/A ancestory owners".
Com ports can get in each others way if they share an interrupt. There
is only a problem after soft boots when the previous OS had interrupts
enabled, but this problem is very confusing to debug and easy to fix
if the ports are known - just initialize them all before attempting to
use any.
Bruce
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