A free QNX-like operating system (2003)

I came across an old post of mine on the comp.os.qnx newsgroup, dated August 7, 2003. The subject line was "A free QNX-like operating system," and under it I announced RadiOS — a hobby effort to build a free, QNX-compatible microkernel OS for x86, with the microkernel and task manager written entirely in NASM assembly. About 70% of the required system calls were in place by then, along with parts…