Try it Online (HTML5)
BefOS is a program which boots off of a floppy disk, and is billed as a Befunge-themed toy operating system for the IBM PC compatible architecture. However, it omits most of the functionality of an operating system, and most of the functionality of Befunge as well, and therefore might be more accurately described as a disk sector editor with some unusual features.
BefOS (NASM) in the BefOS distribution
- BefOS (NASM) (the reference implementation), an operating system in NASM Assembler in the BefOS distribution
x86 machine code