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Date:      Tue, 05 May 1998 15:13:38 -0700
From:      Mike Smith <mike@smith.net.au>
To:        Terry Lambert <tlambert@primenet.com>
Cc:        hasty@rah.star-gate.com (Amancio Hasty), chuckr@Glue.umd.edu, luigi@labinfo.iet.unipi.it, Nicolas.Souchu@prism.uvsq.fr, freebsd-hackers@FreeBSD.ORG
Subject:   Re: ISA PnP / snd PnP developments? 
Message-ID:  <199805052213.PAA00806@antipodes.cdrom.com>
In-Reply-To: Your message of "Tue, 05 May 1998 07:39:23 -0000." <199805050739.AAA16950@usr02.primenet.com> 

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> > We don't use bios calls for drivers however very recently someone checked in
> > code to make bios calls which can come in handy for video adapters video
> > modes.
> 
> Making INT 10 calls is generally a bad idea.
> 
> It requires taking down most of the outstanding operations manually
> from the kernel side, in the expectation of CLI/STI/etc..

Given that the calls in question run inside a VM86 penalty box, most of 
your qualms here are fundamentally invalid - suspension of interrupts 
etc. by the video BIOS isn't going to be a problem.


-- 
\\  Sometimes you're ahead,       \\  Mike Smith
\\  sometimes you're behind.      \\  mike@smith.net.au
\\  The race is long, and in the  \\  msmith@freebsd.org
\\  end it's only with yourself.  \\  msmith@cdrom.com



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