[jessydiamondman]

A few friends are working on making a generic tool that will support lots of different architectures, but since Xilinx has a clause in their agreement for downloading ISE that you will not reverse engineer the software, and that you will not use the output of the software (the bit files for example) to reverse engineer anything. This means that you can't compile a bunch of slightly different things in ISE and check what the bit files look like. The only alternative my friends can think about are rather extreme ways of getting around this.