[Coco] Ghana Bwana on my Coco3 not working but ok on Coco2
robert.gault at worldnet.att.net
Fri Jan 4 19:21:15 EST 2008
Steve Bjork wrote:
> There is a patch that I wrote a long time ago to make Ghana Bwana (and
> other games) work on a CoCo 3. (But don't have a copy of it.)
Thanks Steve. I've looked at the code in the May '91 Rainbow and will
summarize the relevant info here as the entire program patch is not
needed essentially duplicating *.BAS , the boot program on the disk.
For others, the patch does not remove copy protection so you must have
the original game disk. All the patch does is change two LOAD addresses
and change some Coco3 palette values.
You need to change two bytes of the game disk Track-34 Sector-4. The
bytes are $6A and $7A currently $FF and must be changed to $FE. Then the
game will run on a Coco3.
If you have an RGB monitor, the game will be in black and white unless
you change the Coco3 palette colors. That will give you a fake artifact
color scheme but not as good as true artifact colors. So,
And in case it is not obvious, you are setting the color values white,
black, blue, and red for RGB systems.
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