I built a Game Boy emulator in F#

Shared from nickkossolapov.github.io on May 2, 2026.

Articlenickkossolapov.github.io

Nick Kossolapov,

A full account of building Fame Boy — a working Game Boy emulator in F# — covering CPU, PPU, and APU implementation, optimization decisions, and what the project revealed about how computers actually work.

The F# angle is useful: it shows where functional programming fits naturally in low-level emulation work and where it requires deliberate workarounds.

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