[Coco] Viewing GIF files on a Coco

[Frederick D Provoncha]

On Mon, 27 Sep 2004 19:05:51 -0500 Roger Taylor <rtaylor at bayou.com>
writes:
> Fred, as the others mentioned, GIF87a was the original format and 
> most CoCo 
> viewers support only that format.  However, unless you see animation 
> or any 
> other special effects, it's probably just a standard GIF but with 
> the 
> GIF89a header.  Most encoders just stick the GIF89a label at the 
> beginning 
> of the files even if the picture doesn't use any GIF89a features.  
> So... 
> you can probably use a hex editor and change the 9 to a 7 and get 
> those 
> pictures to load using the older CoCo viewers.  Projector-3 doesn't 
> have a 
> problem with viewing GIF89a pics, and even supports some of the 89a 
> 
> features (to some degree, not ignoring them altogether).

That did it! I used 'dEd' to analyze the file and right at the beginning
of the file it says 'GIF89A'. I changed the 9 to a 7, saved the change,
exited out of dEd, re-ran the 'viewgif' utility, and presto! The picture
displayed! That's all there was to it. Now I have a baby picture of my
daughter displayed on my Coco! It looks great. Thank you all so much for
your help.

Fred Provoncha