Re: Contiki 2.4 binary release for Retrocomputing

["Michael J. Mahon" <mjmahon@aol.com>]

On 9/21/2010 4:03 PM, sicklittlemonkey wrote:
> On Sep 22, 1:26 am, ol...@web.de (Oliver Schmidt) wrote:
> > If you don't tie any expectations to sending me code than I'm happy to
> > receive it and store it away in order to check it out when the time
> > has come...
>
> Fine. Tom has checked them into the AppleWin project docs:
> http://svn.berlios.de/wsvn/applewin/trunk/AppleWin/docs/NoSlotClock/
>
> > So a NSC *is* already used (at least indirectly via ProDOS) by the
> > cc65 C library.
>
> Good! :-)

I agree--a very appropriate way to deal with time().

> > The con's:
> > - No seconds
>
> Not so good! :-(

IIRC, the seconds are available in the $200 buffer at a well-known ;-)
location after a time call, depending on the particular clock driver.

For high-resolution timing (sub-second resolution), there are other
methods for syncing with the "second" transition, doing the activity
to be timed, then re-syncing to the "second" transition while counting
in a timed loop.  This method is capable of sub-millisecond resolution
for doing measurements.

-michael

NadaNet 3.1 for Apple II parallel computing!
Home page:  http://home.comcast.net/~mjmahon/

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