[no subject]

If this is the case, it may be that a simple counter loop can be used
to determine when to run waiting tasks or to "expire" timers.  The
accurate elapsed time may be unnecessary, as I believe you noted.

In any case, Contiki does not require interrupts, only an approximate
implementation of the clock() function.  Interrupts are just one way
of providing an elapsed real time function, and, at least on the Apple II,
not the preferred way, since they necessarily interfere with timing loops.

If there are additional unimplemented functions, they apparently did
not prevent some from compiling the source, using the Apple II library.
Assuming that the Apple II library does not contain stubs for any
unimplemented functions, that suggests that all the functions that
Contiki uses are present.

-michael

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