Hi guys, I am in a kind of "cant see the wood for the trees" scenario regarding = the initialisation of the I/O for the 12c508 that hopefully someone can = help me with. I simply configuring the device to enable GPIO,0,1,4 & 5 = as outputs and GPIO,2 & 3 as inputs. I am setting the configuration = fuses to disable the mclr and to enable the Internal rc oscillator, the = problem is that I cannot toggle outputs 4 & 5 through simulation in = mplab. I know that I must be missing something ridiculous but I cannot = see it, any suggestions greatly received. Thanks in advance=20 Andy -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu