Danila
Today I've tried to connect a nokia 3310 LCD to TUMPA (SPI) and needed 2 additional Pins for C/D and Reset lines, so I've looked for the corresponding ACBUS/BCBUS pins which can be used as GPIO lines in the synchronous serial communication mode at the same time (AN_178_User Guide for LibMPSSE-SPI.pdf)
My disappointment was big when I saw that there are no headers for ACBUS/BCBUS pins. Please include them in the next hardware revision. Is it possible to get the schematics of the board? I plan to connect my own header to BCBUS pins and I just want to be sure that they are not connected to something else...