Tom7's printable-x86 C compiler and DOS executable paper

HN fans call it a favorite engineering video and a showcase of Tom7's masterpiece-level, playful hacking.

Tom7 explains how he built a SIGBOVIK 2017 paper made only of printable ASCII bytes that is also a valid DOS executable. He writes a C compiler targeting printable x86 without self-modifying code and solves the puzzles the constraint creates.