Has anyone actually tried that code on the http://www.em.avnet.com/en-us/design/drc/Pages/Xilinx-Spartan-6-FPGA-LX9-MicroBoard.aspx ? It would be interesting to know if it works. But DON'T go buying one for mining. Pathetic 5 MHash/second is mining dust. Just worthless.

[Edit] (Answering myself) No it won't work as it uses RS232 port comms. Someone would have to add the xilinx usb code from fpgaminer's github.