[Coco] CoCo2 lower graphics

[Ciaran Anscomb]

"Michael Pittsley" wrote:
> I have a COCO 2 that when I load certain software or cartridges the bottom
> half the screen is garbled. [...] The garbled graphics is just on some
> graphical games / cartridges.  If I load Tom Mix's Donkey King everything
> works as expected.  Try to run a frogger game or Bridge Tutor, I cannot see
> the bottom half of the screen other than gibberish graphics.

Might be worth a photo of the garbled screen.  The games otherwise seem
to be running as expected?  Weird failure mode!

What happens if you type:

10 SCREEN0,1
20 GOTO20
RUN

?

..ciaran