>Clearly, I'm just one of those gimmy kinda guys trying to get >thru my homework on someone else's dime. :) No, clearly you are attempting to deal with relocatable code in absolute mode. Use the batch file method to compile and link, then it all just plain works. Spending an hour having a look at Olins build environment really will pay dividends in understanding how the relocatable environment works. He has done all the leg work for you, you just need to 'fill in the code'. I did exactly this with the I2C example code that Microchip publish in AN734 & AN735, along with the good Friars serial code that has served many people well. Converted them all to interrupt code along the way as well. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist