2006/9/26, Josh Koffman wrote: > ...nothing complained that I was trying to write to FSR0 and not > FSR0L. I guess it must be mapped somewhere, though I haven't looked to > see where. Surely nothing will happen. If you check again the define for FSR0, you'll understand why you never got a warning or error. A side note: I bet everytime someone posted a code like this: movf a_register, 1, 0 Many will say don't use that code. Use the symbol defined in header/include file. But I will have no complaint at all if I see this: lfsr 0, a_register ; Note the use of 0 instead of FSR0. -- WH Tan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist