Added in the framework for outputting directly to PORTD, PORTB and PORTC.
Changed the display to output directly to PORTD for the Y-axis. The X-axis is outputted to the function outputPORTB. This function maps a byte to pins on PORTB and PORTC.
Starting up this project again. I'm not sure what changes I'm committing but it looks pretty awful haha.

I'll try to clean thins up and comment but it looks like I'll only have a few days to fix things again. So I may fall prey to 'getting it done before making it pretty...'
Finished calibrating the parameters for the new potentiometers I just installed.
Merge branch 'scope'