I'm always in favor of homebuilt OS projects, I've worked on several in-house OSs and they seem to have good ideas salted around them.
If it were me, I'd write an open source RTOS (yet another one) and cast around for clever notions to stick in the thing, for the mental exercise if nothing else. Perhaps carve out a niche in quality/safety and not so much in performance.
If it were me, I'd write an open source RTOS (yet another one) and cast around for clever notions to stick in the thing, for the mental exercise if nothing else. Perhaps carve out a niche in quality/safety and not so much in performance.