Show HN: Discrete6502 – one thing led to another

Category: other

Tags: hardware, retro-computing, cpu, electronics, 6502

Score: 7.0/10 (Innovation: 8, Technical: 9, Documentation: 8, Utility: 4)

A 6502 CPU reconstructed from 4,051 discrete transistors on a large PCB, executing real code from a Pico. The project is a deep hardware engineering feat, including custom EDA toolchain, SPICE validation, and detailed bring-up logs. It is interesting for its meticulous documentation of design flaws and fixes, offering a rare look at discrete logic design.

Target audience: hardware engineers, retro computing enthusiasts, electronics hobbyists

Repository: https://epatel.github.io/discrete6502/

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