Crabs All the Way Down – Running Rust on Logic Gates

In plain words

Crabs All the Way Down documents a project where an ARM Thumb CPU was built from scratch using a digital circuit simulator, then pushed further by running real applications on it including a web server, Scheme interpreter, MIDI player, and VT100 emulator. The project serves as a technical deep-dive blog post exploring how these components were integrated together, aimed at developers interested in CPU design and low-level systems programming.

written from the facts on this page · September 2026

From the sources

A journey in building an ARM CPU from scratch in a digital circuit simulator, and running Rust on it to interpret Scheme and serve Web pages.

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