John Nall wrote: > the program would not compile because there is an undeclared > variable, by the name of RTCC. It appears to me that RTCC and > TMR0 are the same, and so this is not a big thing. Except that I > am curious as to why they called it RTCC. Is this a historical > thing? Did TMR0 used to be called RTCC? The data sheet for the > 16C54 makes no mention of RTCC. You are correct; RTCC (Real Time Clock/Counter) is what Microchip used to call TMR0. -Andy === Andrew Warren -- aiw@cypress.com === Principal Design Engineer === Cypress Semiconductor Corporation === === Opinions expressed above do not === necessarily represent those of === Cypress Semiconductor Corporation -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.