All about 'How to set config fuses http://www.picbasic.co.uk/forum/showthread.php?t=543
Also you'll need to disable all analog stuff on PORTA & PORTB (Comparator and A/D converter) : Datasheet Section 19.0 and 20.0
AND finnally you'll need to configure the internal oscillator speed as the default is 1MHZ : OSCCON register Section 2.6




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