Hi Steve,

I did read the posts and "still" try to understand it.
I forgot to mention that I use MPASM 5.03 assembler, because PM does not have inc file for 18F4431 ( or does it ? )

Melanie said :
3.b. When using Microchip's (MPASM) Assembler

If you're going to use MPASM, look for the appropriate file (example for a 16F628 look for P16F628.INC) located in something like the MCHIP_Tools subdirectory of your MPLAB installation. Here you’ll find the Configuration Bits located near the bottom of the list. Simply just use the ones you want. Hey presto your PIC is all defined and ready to run.

But how ? I am new to PBP, please help


Thanks,

Johan