Why should it be a trick?! Using the VDP-register 18 you can scroll
horizontally, but only a few pixels, it is the registers which in BASIC can
be controlled with VDP(19)........ Maybe more familiar, the SET
ADJUST-command uses it.......
And the reason the border isn't flickering, well, I guess they put some
black sprites there, so no one sees the copying......
It is just a matter of copy and scroll.......
Anne
p.s. And yes, of course, vertically is so much easier.....Not to speak of
the V9958........
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