My from-scratch OS kernel that runs DOOM
Hi there! I've been on-and-off working on TacOS for a few months, which follows some UNIX-derived concepts (exec/fork, unix-style VFS, etc) and is now able to run a port of Doom, with a fairly small amount of modifications, using my from-scratch libc. The performance is actually decent compared to what I expected. Very interested to hear your thoughts. Thank you!
In plain words
TacOS is a from-scratch operating system kernel built around UNIX-derived concepts including exec/fork and a unix-style virtual file system. The kernel includes a custom libc and is capable of running a ported version of Doom with minimal modifications. It is designed for developers and hobbyists interested in operating system development and low-level programming. The project demonstrates functional performance running a complex application like Doom while maintaining a relatively lightweight architecture.
written from the facts on this page · September 2026
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