Worth knowing
dbreunig/nesformer
This project demonstrates both how deterministic computation can be baked directly into transformer weights and how capable coding models are at autonomously locating test suites to build complex software.
Reported by Simon Willison ·
What happened
Developer Drew Breunig embedded a working Nintendo Entertainment System 6502 CPU emulator directly into the weights of the Qwen3.5-4B language model, allowing it to slowly run NES games like Super Mario Bros. The project, named nesformer, was built using Opus 5.5, which autonomously found and utilized a 15-year-old NES CPU conformance test suite to build the system.
Who it’s about
- Drew Breunig
- Qwen
- Opus 5.5
- nesformer
- qwenputer
Source
Simon Willison
dbreunig/nesformer
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