Steven Reid·Sep 28, 2025Fun with DATA — Building a Blocky World Map on the ZX81I adapted a blocky world map program to the ZX81, working around its missing DATA command. The result is a fun, compressed map that runs.
Steven Reid·Aug 31, 2025Speeding Up Truchet Tiles on My ZX81 with Machine CodeTaking my ZX81 Truchet tiles program from BASIC to machine code for a big speed boost. Faster, smoother, and fun to watch in action.
InsantiagobustelobySantiago Bustelo·Aug 15, 2025Mis primeros 40 años en tecnología :)Este mes se cumplen 40 años de mi primer hito destacable en esta industria: cuando la revista K-64 publicó el pequeño programa que envié a…A response icon1
Steven Reid·Jun 29, 2025Recreating Font Art on the ZX81-With Some LimitsA chance video inspired me to recreate font art on the ZX81 using character graphics. It worked — mostly. Here’s how it went (and where it…
Steven Reid·May 30, 2025A ZX81 Puzzle Makeover: No More INPUT DramaI revisited a classic logic puzzle on the ZX81 — this time with smoother controls and a better user experience. No INPUT prompts, just…
