Steven Kosmerchock wrote: > Two of the I/O lines go through about 6 feet of wiring. The problem > is that the lines are having problems with (I'm guessing!?) > capacitance. I will use a very short cable and everything seems to > work fine. May I firstly issue the Standard Reply: Could you please tell us just *what* you mean by "problems"? It's very hard to guess a diagnosis when no *actual* information is given. This makes it necessary to give the answers to both of the implied questions. If the PIC itself is malfunctioning, then put a 150 ohm resistor between PIC and "long line" and a Schmitt trigger at the other end. Note that to prevent echoes, it is necessary to terminate at least one end of the line by its characteristic impedance (or a fair guess), but you can take your pick of *which* end to terminate! If the I/O signal is not being received correctly, the above is likely to be equally effective, unless (and I doubt it will, but...) this delays the signal too much, in which case you need a true line driver and receiver with termination. -- Cheers, Paul B.