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Mail Archives: djgpp/1995/01/10/12:18:32

To: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Blundering into new fractals?
Date: Tue, 10 Jan 95 10:05:22 CST
From: sasbnb AT unx DOT sas DOT com

Hi,

In tinkering with djgpp and trying to get it to work with my 2Mb
Viper vlb, and have happened upon strikingly bizarre behavior.

When I eliminated my go32 variable in an attempt to use the built in
vesa driver, the card reported being in the 640X480 or 800X600 mode I
ordered. When it tried to draw my fractal, it was as though it was still
in character mode.  Character sized domains were noticeable with the
character bit maps seemingly being drawn from the fractal data. It made
a weird wall paper effect with irregular textures and shadowy shapes
hidden in them. It has the effect of looking at people and landscapes
through rice paper. There were enough screens worth of weirdness to
paper a small bathroom.

One screen full of data (640X480 bytes) redrew the screen dozens of
times.  This (along with the fact that the show went on for minutes)
leads me to believe that it was writing the 300+k of fractal data to a
4k text page.

Perhaps I have stumbled upon a new type of digital data perturbation to
further complicate the convolutions of fractals.  Has anybody seen this
before? Any speculations on what could be causing this behavior? I
just wish it was in some standard graphics mode so that I could 
capture it for study.

Proving once again that ineptitude is the Mother of Invention,

        Brian




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