From: Bodo Eggert <7eggert@gmx.de>
Subject: Re: [RFC] Reliable video POSTing on resume
To: Kendall Bennett <kendallb@scitechsoft.com>, mjg59@srcf.ucam.org,
       linux-kernel@vger.kernel.org
Reply-To: 7eggert@gmx.de
Date: Sat, 12 Feb 2005 14:10:42 +0100
References: <fa.fmtnc0t.131o1g5@ifi.uio.no> <fa.eiu608d.10522qb@ifi.uio.no>
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Kendall Bennett <kendallb@scitechsoft.com> wrote:

> Laptops are a little different as they will make calls from the Video
> BIOS into the system BIOS, so you need to make sure that the system BIOS
> is also available in the execution environment.

Any video BIOS (especially EGA) may call system BIOS functions, e.g. via the
old INT10 (which will get copied to INT42).

HGC and VGA are in the system BIOS. They don't need magic, but they need to
be initialized on order to keep the monitor from burning. On the other hand,
they used to be initialised correctly.
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