Is there a set of pins I can use for a serial (SPI) interface on the 120-pin connector when the quickcapture pins are used. I am making my own breakout board. There are hundreds of combinations to configure the GPIO pins (3 functions each), but it does not appear that any of the serial interfaces are available (some have one pin missing). Anyone look at this before? In the worst case, I'll have to do bit banging using GPIO.