I have written a small real-time o.s.
for 8032 compatible processors. I uses
124 bytes of internal memory to support
4 paralell tasks with each their own
proirity. Mutual exclusion is provided
by means of semaphores, interrupt
support gives the possibility to
link and release a interrupt vector
run-time. Since the total kenel is
written in assembly the processor
overhead has a average case of about 5%.
This kernel is currently arround on the
web under the name MMS(look for version
1.5 and up).


Regards