this post was submitted on 03 Mar 2026
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Redis Creator Lets Claude Code Build a Z80 Emulator From Scratch — And It Nailed It (antirez.com)
submitted 6 days ago by egs81t@lemmygrad.ml to c/technology@lemmygrad.ml
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Salvatore Sanfilippo (antirez, creator of Redis) gave Claude Code detailed Z80/ZX Spectrum specs and documentation upfront — like a real engineer would get — then stepped back. In 20-30 minutes, with zero human steering, it produced a 1,200-line C emulator that passed the notoriously strict ZEXDOC/ZEXALL test suites. A separate copyright audit confirmed the AI synthesized the knowledge rather than copying existing code.​

AI agents don't need less information to prove themselves — they need more, just like human developers do.

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