I would like to use the most pins possible on my Due. I have read in a few places that some pins are duplicates?I cannot read a pin schematic and make heads or tales of it. It says that D10 = D77 and D4 = D87... are those duplicates in the CODE, or on the physical board?
Followup: What about if I (additionally) use the dedicated SPI pins in the middle (for SPI)? What pins are those duplicates of?