Introduction - If you have any usage issues, please Google them yourself
An example of RTOS. It is a very small RTOS implementation that works even on 8 bit micro-controller. Example project with 3 threads occupies 3695 bytes of ROM and 795 bytes of RAM. This particular implementation is adopted to Freescale DZ60 micro-controller demo board DEMO9S08DZ60. But it is easily portable to many other platforms, because of its simplicity.