How are you reading it?  If you are using interrupts, my favor bug is to
forget to set PEIE to 1.

Andy


At 08:08 AM 12/15/98 +0100, you wrote:
>Hello everybody,
>I'm curently working on a small robot which is controlled by
>DC-motors using a optical-rotating-encoder-disc (resolution
>200 tic's per revolution). Everything works fine, but sometimes
>I notice that I've lost 8 pulses. EMC could be a problem but
>this is almost excluded by the fact that it is always 8 and never
>5,6,7 etc..  and EMC/co-incedence is never that reproduceable.
>
>Does anybody know about sites or problems concerning the
>encoder disc and it's possible problems ?
>
>Regards, Jan Derogee
>
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Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA
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