>> list p=p16c54a, l=inhx32, r=hex >> include 'p16c5x.inc' >> >> which I thought would define __16C54 > > No, it defines __16C54A. Ah. That was it. I was under the impression it would define a generic __16C54. I have 16c54 and 54a,c (and 508a, 508 non-a etc). Peter -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.