How to use MIMO cable and how to program and debug firmware?

I want to use MIMO cable to implement MIMO. However I found that the
current
code in mimo_tx.c and mimo_tx_slave.c only support part of the functions
on
transmitting data. Is there any firmware code, which fully support
transmitting and receiving signals from two USRPs connected by MIMO
cable?

If not, I’m thinking of writing it by myself. In that case, I’m
wondering
what environment should I install to debug the firmware codes. After
installing mb-gcc-4.1.1.gr2.i386.tar.gz. I can compile txrx.c into
txrx.bin, but can not debug the c program. Do I need to install some
Xilinx
software? What kind of that? Thanks.

Best,
Jin