From owner-freebsd-current Tue Feb 24 02:22:38 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id CAA11848 for freebsd-current-outgoing; Tue, 24 Feb 1998 02:22:38 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from sos.freebsd.dk (sos.freebsd.dk [195.8.129.33]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id CAA11803 for ; Tue, 24 Feb 1998 02:22:28 -0800 (PST) (envelope-from sos@sos.freebsd.dk) Received: (from sos@localhost) by sos.freebsd.dk (8.8.8/8.8.8) id LAA01674; Tue, 24 Feb 1998 11:22:12 +0100 (MET) (envelope-from sos) Message-Id: <199802241022.LAA01674@sos.freebsd.dk> Subject: Re: Proposed addition to panic() behaviour In-Reply-To: from Andrzej Bialecki at "Feb 24, 98 11:13:16 am" To: abial@nask.pl (Andrzej Bialecki) Date: Tue, 24 Feb 1998 11:22:11 +0100 (MET) Cc: yokota@zodiac.mech.utsunomiya-u.ac.jp, freebsd-current@FreeBSD.ORG From: Søren Schmidt Reply-to: sos@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL30 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG 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 - 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. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Søren Schmidt (sos@FreeBSD.org) FreeBSD Core Team Even more code to hack -- will it ever end .. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message