difference between Preemption and context switch

Question

A little intro,

I am currently writing a small (read tiny) RTOS kernel, well it\'s supposed to be monolithic with most stuff in the kernel. However I can\'t find much in

Answer 1

I was under the impression that the uC/OS-III was not free, but licensed.

A great free RTOS, and very well explained, is the FreeRTOS (http://www.freertos.org/)

You should definitely take a look there