[Coco] hardware scrolling

[Nick Marentes]

This is not a new feature. It's been known. I just don't think that 
anyone used it.

Does anyone know of a CoCo 1/2 game that actually used the ability to 
set start of video for vertical or horizontal scrolling? I think 
everyone just used software which allowed for 1 byte movement. As it 
stands, it jumps in increments of several bytes (6?).

Also, same problem as the CoCo3 GIME... it moves the whole screen.

Simon, your next challenge is split screen scrolling which I think the 
VDG would be able to do by syncing on the horizontal scanlines and 
changing the $FF22 at set points.

Nick