[Coco] hardware scrolling

[Nick Marentes]

 > Yes i have dabbled a little... You can scroll the screen in the "broken"
semi graphics mode.... The one where you can mix hires (only 7 bits) and
text/SG blocks !!

Now that would be interesting to see! I wonder if a semigraphics scroll 
is smooth enough?

An 8 color mode with a black border. Semigraphics gives a completely new 
look to the old green/buff screen modes of the VDG.

8 colors flickered between 2 pages to mix the colors gives a theoretical 
64 colors (theoretical).

The first 64 color hardware scrolling tech demo for the CoCo 1/2.

That'll have me changing my pants!   :)

Nick