This week on the blog: the biggest problem with my C64 hobby stuff on the blog is that I did it a long time ago and built out of the scraps of a dozen notebooks I'd kept for 15 years. I'm embarrassingly short on "reference page" articles to link back to.
So: C64 sprites, with focus on basic usage and multiplexing, and tabulating where, and how tight, the timing constraints are when messing with them mid-screen.
https://bumbershootsoft.wordpress.com/2026/02/21/spritework-on-the-commodore-64/