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From: David Dawes <dawes@rf900.physics.usyd.edu.au>
Message-Id: <199511300240.NAA21779@rf900.physics.usyd.edu.au>
Subject: Re: Problem with sio probe and Mach64 PCI video card
To: joerg_wunsch@uriah.heep.sax.de
Date: Thu, 30 Nov 1995 13:40:20 +1100 (EST)
Cc: hackers@freebsd.org
In-Reply-To: <199511300043.BAA17117@uriah.heep.sax.de> from "J Wunsch" at Nov 30, 95 01:43:02 am
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>As David Dawes wrote:
>> 
>> extents.  A serial port using the usual COM4 address simply can't
>> coexist with these type of cards (S3, ATI, etc).
>
>Funny that either COM4 as 8514 are IBM kids. :-)
>
>S3 can coexist with traditional COM4, since it's possible to remap
>their IO registers (they only default to the 8514-compatible mode).
>XFree86 didn't implement this however (and i doubt somebody is
>bothered enough to do it -- i would rather scratch a pad on my serial
>card and reconnect the port to 0x268 or 0x368 :-).

We did make an attempt at implementing it, but found that there were
problems using it with some of the S3 chips :-( (grep for COM4 in the
XFree86 CHANGELOG).

David