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Message-ID: | <8D53104ECD0CD211AF4000A0C9D60AE3538114@probe-2.acclaim-euro.net> |
From: | Shawn Hargreaves <ShawnH AT Probe DOT co DOT uk> |
To: | djgpp AT delorie DOT com, |
"Salvador Eduardo Tropea (SET)" | |
<salvador AT inti DOT gov DOT ar> | |
Subject: | RE: Line frame buffer speed problem |
Date: | Mon, 15 Feb 1999 17:21:27 -0000 |
MIME-Version: | 1.0 |
X-Mailer: | Internet Mail Service (5.0.1460.8) |
Reply-To: | djgpp AT delorie DOT com |
> Salvador Eduardo Tropea writes: >> That is _really_ weird. > >> totally different VESA driver... > > I saw this before in a TGUI9440 board. The Ivan Baldo board+motherboard > combination makes the LFB slower than the banked mode. Looks like the problem > is above/below 1Mb. Well, I just learned something new! I've seen plenty of cards where it is the other way around (writing to the linear buffer enables a faster bus transfer mode, and avoids the card having to bother about emulating the VGA write mode registers), but I can't think of any reason why the LFB would be slower. I don't suppose this could be something really stupid like Windows trying to virtualise the framebuffer? Shawn Hargreaves.
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