Tried posting this earlier, but got no replies... maybe it's such a dumb question that I should know it instinctively, but I don't. :-( I want to use a 16C73 to read five analog sources. But at the same time, I need to use the SPI port in master mode to drive a MAX7219 LED driver. If I enable the SPI, does that always take away the ability to use the A/D input pin AN4? I don't need the *SS signal, so if I try to read an analog input on AN4 will it work? Or do I have to disable the SPI first (which would be a major pain)? Comments? Flames? Anyone??