# GTFPGA {#gtfpga} The GTFPGA card is an extension card for simulator racks from RTDS. The manufacturer provides a VHDL module to exchange data via fiber optics between the GTFPGA and GPC cards. The GTFPGA card is based on the Xilinx ML507 evaluation board. This board consists of a Virtex 5 FPGA, Ethernet and Fiberoptic MACs and an integrated PowerPC core. The PowerPC core is used to forward values between RTDS and the S2SS server. ## Configuration Every `gtfpga` node support the following special settings: #### `slot` #### `id` #### `rate` ### Example @todo Add excerpt from example.conf