USRP2 FPGA debugging

There's a debug port (MICTOR connector) on the USRP2 (J301) which you can route signals to for debugging. It's connected to the 32-bit wire "debug" in u2_core.v. Just connect signals you're interested in to debug and use a logic analyzer.

https://article.gmane.org/gmane.comp.hardware.usrp.e100/1477/match=

https://stackoverflow.com/questions/7269237/usrp2-fpga-debugging