Vertical fine scrolling demo gr.0

[Mariano DM]

I've put together a scrolling demo

 

Code is pretty simple and it uses a VBI routine from compute mag.

https://github.com/marianodominguez/8bit-samples/blob/master/scroll_lib/GR0SCR.TBA

I'm generating 3 screens beforehand. but i wonder if it will be fast enough to generate them as we scroll. maybe having a buffer.

[The Car]

Nice!  You should be able to easily generate a new row on the fly - if not all 40 chars in one frame, you have 7-8 frames to create the next strip before it scrolls into view, so you only need to generate 5 or so chars per frame.

[Rybags]

With the relocate string trick, all sorts of stuff is possible.

Alternatively you could just about have a string of the random slashes of a couple of thousand bytes and randomly pick and place part of it which would probably be more than sufficient to create the illusion of it being totally random.