BareMetal OS - completely written in assembly

“ BareMetal OS – For a lean, mean, processing machine

BareMetal is a 64-bit OS for x86-64 based computers. The OS is written entirely in Assembly, while applications can be written in Assembly or C/C++. Development of the Operating System is guided by its 3 target segments:

High Performance Computing – Act as the base OS for a HPC cluster node. Running advanced computation workloads is ideal for a mono-tasking Operating System.
Embedded Applications – Provide a platform for embedded applications running on commodity x86-64 hardware.
Education – Provide an environment for learning and experimenting with programming in x86-64 Assembly as well as Operating System fundamentals.

Current version is 0.5.1 – released May 16, 2011.

BareMetal boots via Pure64 and has a command line interface with the ability to load programs/data from a hard drive. Current plans for v0.6.0 call for a more feature-rich C/C++ library for applications, DMA support for Hard Drives, Basic TCP/IP support, as well as general bug fixes and optimizations. The creation of BareMetal was inspired by MikeOS – A 16-bit OS written in Assembly used as a learning tool to show how simple Operating Systems work.“