[Coco] Ideas for a Graphics Project

[Robert Gault]

The POKEs actually tells Basic that the starting address of a Basic 
program should be $6E00. When BALL is reloaded, there is then room for 
the required PMODE4 screens.

If the program were revised for Coco3 use where the Basic code is in 
RAM, a better way would be to replace line 5 with
5 WIDTH32:POKE&H9692,17:PCLEAR16
With the above, it will not be necessary to reload the program. The POKE 
tells Basic that a PCLEAR16 is legal, which automatically relocates the 
program so that there is sufficient space for the command
PMODE3,13 to work.

Robert Emery wrote:

<snip>
> BALL.BAS is an unrelated program from the Rainbow which uses page flipping to
> simulate a 3D moving graphic. To run it, you must first LOAD it and LIST5 (the
> first line.) Enter the POKEs in the REM statement, then reload the program and
> run it. The POKEs set up an extra PMODE4 page for Basic.
> 
> cheers,
> Bob