Dwayne,

you was right. i just buy a load of these F819 to test your solution and the problem is really caused by OSCCON value unset at the program begining. PBP will assume OSCCON as 0 wich is mean 31.25Khz in datasheet.

Ioannis see datasheet p 40 OSCCON Register settings for proper clock setting.


Few settings:

OSCCON = $70 ;8 MHZ
OSCCON = $60 ;4 Mhz

etc...