Hi, 

I have been playing around in a VICE x128 app, trying my luck at the 8563
smooth scrolling features.

I know that writing values 1-7 to Register 24 causes the display to scroll the
intended number of scan lines, and I see that working (sort of). While the
content gracefully slides up and out of view at the top, what appears at the
bottom of the screen, 
the new content to be scrolled in, appears as "gibberish."

I am using the $1000 area of 8563/video RAM as the character display RAM (set
via registers 12 and 13) and have written/copied 2 entire screens worth (4096
bytes) of blank screen characters (#102) to fill the RAM before I try
scrolling.  But no matter 
what the new data scrolling in at the bottom is garbled. I have advanced
Register 13 (low byte of screen data) by 80 bytes before and after the
attempted smooth scroll to no avail.

Any clues appreciated!

--- SoupGate-Win32 v1.05