>> One scheme I have seen used in a co-operative OS is each task is
>> assigned a priority number, the larger the number the lower
>> priority of the task.
...

>That's clever!

Yes, that is what I thought when I first came across it. IIRC a task could 
be assigned a priority between 1 and 99, with the default being somewhere in 
the middle.

For an embedded system I suspect 1 through 7 would be plenty sufficient, 
with 0 being the running task. If a number of tasks reached 0 together, then 
I think it did a round robin on them. 

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