Matrix user forums

Hi there Benj, Many thanks, that's got it working. I went through all the differences between our configurations one by one and it turns out the problem was the oscillator setting. I was under the impression that using XT or HS would make little difference in my project but I realise my mistake now ...

Hopefully someone can help me here. I've written a very simple flowchart which is as basic as switching a few output ports on and off for the purpose of a small test program we need (RB4, RB5, RC2, RD4). Now, this program works a treat on the PIC16F877a but when I switch the chip in flowcode to an 1...