Life & fun · December 24, 2020
TreeOS – A 16-bit bootsector Christmas tree demo
Christmas tree demo on bare PC hardware (no OS), in 16-bit assembly - cfallin/treeos
TreeOS – A 16-bit bootsector Christmas tree demo launched on December 24, 2020 with 141 votes, #225 of 3,242 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 5 years on.
In plain words
TreeOS is a minimalist 16-bit bootsector program that displays a Christmas tree animation. Created as a holiday demo and released on GitHub, it runs entirely within the boot sector of a computer, making it a technical curiosity for those interested in low-level programming and retro computing. The project serves as both a festive novelty and an educational example of what can be accomplished with extremely limited code space.
written from the facts on this page · September 2026
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