[Coco] Example basic code for screen grid

Darren A mechacoco at gmail.com
Fri Feb 24 08:25:18 EST 2012

On Fri, Feb 24, 2012 at 12:43 AM, mike del yea wrote:
> ...
> I'd use the text screen rather than a semigraphics screen because the coco
> 3 can't use the semigraphics screen.

By semigraphics screen, I meant the text screen.  Any byte value
greater than 127 poked into the text screen uses the semigraphics4
mode.  And yes, this does work on a CoCo 3.

The screen addresses range from 1024 to 1535.  Poke values of 128 for
black or 207 for white.  You can also construct larger "graphic"
strings with CHR$ and/or STRING$ and print them to the screen much


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