[OT]:: Anciem Regime <-- Trouble debugging using MPLAB >> Do you remember ever changing the value of a constant? >> >> e.g. >> http://everything2.com/title/Changing+the+value+of+5+in+FORTRAN Not as I remember. AFAIR FORTRAN IV was in use when I first used it. FORTRAN typing will also be a source of amusement to modern youth. Variables beginning I...M were implicitly declared as constants unless explicitly declared otherwise. All other start letters made variables REAL unless explicitly declared otherwise. And more: http://www.obliquity.com/computer/fortran/datatype.html The above reference states that constants cannot be altered. Which may or may not be true for the variant he is talking about. FWIW, Gargoyles spilling chucker doesn't know about the word FORTRAN Hmm. Lets's see. BASIC COBOL PASCAL ADA LISP MODULA BCSP JAL APL PLM (Basic and lisp are unfair tests). Names from Modula on are unknown. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist