I had the exactly same problem yesterday when using 16C622.

> But you need to first disable the comparators on Port A by writing a value
> of 7 to the CMCON register. This will make the Port A pins behave as
>digital i/o pins.

My colleague suggested what Bala mentioned above, and it works straight
away.

Regards,
Pei Yin

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.