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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