Leo wrote:

>Dear PICer friends, do you have any idea to help me to solve this problem?
I had some startup trouble with an '877 and a 4MHz ceramic resonator from
Murata. Increasing the configuration bit to HS helped (higher drive from
the PIC) but I didn't like that. A look at Murata's website suggested a
1M resistor across the resonator, so I tried that and I haven't had any
trouble since. I assume the same trick with crystal would work, it's
worth a try.

Dave Johnson