Andy, I figured so. When you look at the data books for devices with common RAM (16C77, 16F877), they still have the old ISR examples. At least the reference manual mentioned using the 0x70-7F area which should be obvious. As far as documentation errors, I think the 16F87X book is setting a new record... - Tom At 10:08 AM 9/2/99 -0400, Andy Kunz wrote: >>The code has been working fine but am I missing something obvious? > >I think you are on the right track. Sometimes I think the semi companies >have neophytes do the docs. > >Andy ------------------------------------------------------------------------ Tom Handley New Age Communications Since '75 before "New Age" and no one around here is waiting for UFOs ;-)