> How have you > managed to program PICs for two years without ever having cracked the > manual? How have you been locating the start of your interrupt routines? I have been found out. I just read over some sample programs in a book microchip put out (UCHB update or something like that) and then made a lot of trial and errors. I have never had a good handle on the assembler directives, I just use the 13 assembler directives. Funny thing about interupts. I use this great processor (16C67) with lots of peripheral interupts, and i have never used them. I monitor some of the bits sometimes, but never used the interupts. However, I would have used 'brute force' like this: nop goto SETUP ;go see if it s power up, brown out, or WDT reset nop I_HANDLE ;start my interupt handler here blah blah I bit unrefined I am sure, but like I said all I am used to using the language only. Thanks for the feedback though, I am learning. Shawn -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.