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READ.ME
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1990-09-22
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September 22, 1990
The program TP4GIF.PAS was based on GIFSLOW.PAS by Jim Griebel.
Needing a GIF viewer to use as the basis for an automated demonstration
program at a trade show, I pulled Jim's GIFSLOW.PAS off of the Milwaukee
Exec-PC BBS. I have to confess that I did not then (and don't now)
understand the GIF format. Jim did that work. What I do understand
is how to make Turbo Pascal code run fast (I do it for a living). So all
I did to Jim's program was speed it up by an order of magnitude.
Jim, in case you read this, I think the bulk of the speed increase came
from the GetByte, GetWord, and especially ReadCode procedures. It has
been a while since I did the modifications, but that's what I remember.
In any case, here's the program with source code. I used it ONLY on a
standard 640 x 350 EGA, so have no idea what it will do on other displays.
I have included three of the GIF files from my trade show, since I know they
work with the program.
Good luck, and happy GIF'ing!
Rob Henningsgard