#bobs · 3 posts

Blitter objects drawn into character sets, without a blitter.

Scrolling Bob Scroller

How the No Bounds bob scroller repeats on a diagonal: one shape plotted to a C64 charset, ten screens and $d018 doing the scrolling.

Series: No Bounds

Finite Bobs

The finite bobs part from No Bounds: a bob trail plotted into charsets over an AGSP-scrolled C64 background, restored behind it as it goes.

Series: No Bounds

DXYCP Scrollers

DXYCP scrollers on the C64: pre-shifted fonts, generated LDA/ORA/STA plot code, and plotting to bitmap, charset or multiplexed sprites.