Message-ID: <51CC8BA6EC01D1118E3200A024B9625B346827@mailhost.probe.co.uk>
From: Shawn Hargreaves <ShawnH AT Probe DOT co DOT uk>
To: djgpp AT delorie DOT com
Subject: Re: SCROLLING A LARGE SVGA
Date: Tue, 9 Dec 1997 14:30:30 -0000
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Markus Schrader writes:
> Does anyone know a way to make horizontal 1 pixel scrolling
> in SVGA using the VESA2.0 functions.

AFAIK this is not possible. You can do a hardware scroll with
the VESA set display start function (either int 0x10 function
0x4F07, or using the VBE 2.0 protected mode stub), but most
chipsets have a 4 or 8 byte alignment restriction that prevents
smooth horizontal panning. On the VGA you can use the 
pelpan register for fine adjustments, but very few cards 
support this while they are in SVGA mode. A great pity, but 
I don't know of anything that can be done about it...

	Shawn Hargreaves.