SIMD macro assembler unified for ARM, MIPS, PPC and x86
Transfer disks and disk images between the Apple II and the real world
A microkernel-based multiserver operating system written from scratch.
8-bit home-made computer on Z80 CPU
RTOS for Secure, Safe and Real-Time Systems
Prolog to C compiler with runtime for DOS, Windows and Raspbian
Reductively Architected Breviloquently Built Information Environment
64-BIt Operating System with Compiler
a UNIX GUI to monitor Core i7 & Core 2 processors
An open source OS written in assembly.
Complete, Fast, Accurate, Game Boy/CGB/SGB Emulator.
Small 32-bits operating system