Hi ! I have developed a small operating system for MSP430.
It has priority-based preemptive kernel, critical sections, events management and timers. You can find more information and source code at my site http://users.ints.net/skidan/SOS/ It is very simple and small, but usually you don't need more in you projects. I use it to control my home made DSP HF transceiver (it uses MSP430F149 chip). It runs 6 tasks and performs very well. I have a little free time to make documentation and samples, but sources have some comments. All the best ! Oleg.
