cool article..took me a lil to realize the entire OS likely fit in l1 cache and hence its _extremely_ fast because insn cache doesnt get emptied each time, certainly something u wont manage easily in the face of code duplication (his definition of bloat). really cool arcane stuf. thanks for sharing its inspirational! =} love these kind of writeups. that k lang to me looks like an obfuscated code contest entry but the results are impressive. totally love this kind of programming.