I believe that the PIC uses the RC clock flag for an "internal" clock and
therefore probably wouldn't recognize the fact that you have an external RC.
XT looks for an external clock source.

John

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Tim Hamel
Sent: Sunday, February 06, 2000 10:37 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: problem with code

>
>
>          __CONFIG _CP_OFF & _XT_OSC & _PWRTE_ON  & _WDT_OFF
>          ;  Note that the WatchDog Timer is OFF
>          ;  ** the RC oscillator does not work for some reason with an rc
>  oscillator?!?!
>          ;     the funny thing is that the xt works with it though!
>
>