> I use a p16pro programmer with picall software.
>
> I can program a blank pic but once it is programmed I cannot reprogram
> it at all.
> I get a fault1 error in the programming software.
> I suspect that it is probably running in the programmer since it is
> using the internal Rc oscillator.
> this is somehow preventing it from going into programming mode

What PIC are you using?  Some of them have a very right maximum rise time
requirement on Vpp specifically to prevent the internal oscillator
starting.  However, all of these details should be handled by the
programmer.


*****************************************************************
Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com

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