I have made a simple hardware design for the PL. I can load it with either JTAG or by cat'ing the file into xdevcfg. Once the hardware is loaded, it functions properly. Howver, all contact with the PS (running Linux) is gone. No terminal, no ethernet. Is it not possible to just load a bit file with no reference to the processor? Looking in the UCF there doesn't appear to be any reference to any processor specific IOs. I'm guessing that I need to route some PS dedicated pins to some specific hardware pins, but I would have thought that could be done without anything loaded into the PL at all. Any insight would be appreciated.