> Well, I use it in MPLAB, like this: > > __CONFIG B'11111101100100' > > I'm not sure but I guess in C you can use a ASM directive to tell >compiler you are writing an asm code... > > I hope this helps > Gonzalo Thanks for responding. I was afraid if I tried to "brute force" the register that I would collide with some other part of the compiler "secretly" trying to set the configuration on its own. The answer, I discovered is: #fuses MCLR which is kind of a high-level form of directly specifying the configuration bits. Now the thing I don't like is that I don't have a list of all the fuse options and what they correspond to. For instance, how would I use that pin as an input instead? My guess is #fuses MCLR=NO And I also wanted to use the internal oscillator. The datasheet specifies XT, HS, and so on, but also INTRC and EXTRC. So I plugged in INTRC and it took it. Now the compiler didn't generate an error, but that's not how I choose to do development... Anyone with the CCS compiler can look in the book on page 18 and see an incomplete list for #fuses. Ok, I'm done complaining. Next I get to debug it when it doesn't work. :) Barry -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.