by Arvie ?? Mon Sep 19, 2011 1:29 am ikalogic wrote:let me ask please, what are you trying to do.. i mean the logic behind that..2687i will store the value of PORT(P1) to BUF.then if the value is an odd number.. it will be ignored.if it is an even number then there will be a routine for each even number(00000000 - 11111110) combination.