Date: Tue, 24 Feb 1998 11:30:36 +0100 (CET) From: Andrzej Bialecki <abial@nask.pl> To: =?ISO-8859-2?Q?S=F8ren_Schmidt?= <sos@FreeBSD.ORG> Cc: yokota@zodiac.mech.utsunomiya-u.ac.jp, freebsd-current@FreeBSD.ORG Subject: Re: Proposed addition to panic() behaviour Message-ID: <Pine.NEB.3.95.980224112844.22979B-100000@korin.warman.org.pl> In-Reply-To: <199802241022.LAA01674@sos.freebsd.dk>
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On Tue, 24 Feb 1998, Søren Schmidt wrote:
> In reply to Andrzej Bialecki who wrote:
> > > >But I also vaguely recall something like dump of VGA registers
> > > >when booted with -v, so they are stored somewhere, right?
> > >
> > > The video BIOS ROM contains the table of STANDARD register values only.
> > > We cannot know which additional registers should be set to what value.
> >
> > Ok. Call me stubborn, but why can't we just write the STANDARD register
> > values corresponding to the initial state of the card, and if the screen
> > is still garbled, well <shrug> - at least we tried... But, my point is (or
> > maybe I'm still wrong), that *most of the time* this will restore the card
> > to some usable state...
>
> It will only work on a std VGA card in a std mode. All moderne video cards
> demands specific programming (or what do you think the thousands of lines
> of code in Xfree86 does :) )
>
> So your answer is it will not work most of the time, if at all.
Now you convinced me :-) Well, if this is the case I'll try to switch to
the text mode as soon as I see the crash is coming... ;->
Andrzej Bialecki
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abial@warman.org.pl | if(halt_per_mth > 0) { fetch("http://www.freebsd.org") }
Research & Academic | "Be open-minded, but don't let your brains to fall out."
Network in Poland | All of the above (and more) is just my personal opinion.
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