What are the steps involved in FPGA based design?
The different steps in FPGA based design are Design entry, Simulation, Synthesis and Implementation. The design entry mainly describes the circuit may be in VHDL or Verilog or C or by any other means. In simulation we verify the functionality of the circuit by simulating it on computer. In synthesis code will be translated to an implementable form in FPGA (.bit file). Please read the chapter 2 of Xilinx ISE synthesis and simulation design guide document which describes the various steps involved in FPGA based design.