That's what you get for using unfree software.
There's no free alternatives, because AMD doesn't document the bitstream format (i.e. what you need to push to the FPGA to program it to do wha you want).
alt Hacker News
There's no free alternatives, because AMD doesn't document the bitstream format (i.e. what you need to push to the FPGA to program it to do wha you want).