I'm trying to get the touch screen to work. I have xLow and xHigh become inputs, and yLow and yHigh become outputs, set yLow to 0, yHigh to 1, and then do an AD sample on xHigh. Then I swap things so the x's become the outputs, and the y's become the inputs. It's not working. Has anyone gotten it to work doing this route, rather than a special dedicated chip for dealing with the touchscreen?