Text-based entry is well suited for very large designs such as VHDL and Verilog. This section highlights the Xilinx Synopsys Interface (XSI).
The XSI design tool kit enables you to implement FPGA designs using the FPGA Compiler, FPGA Express, and Design Compiler synthesis software. The Synopsys synthesis software creates and optimizes circuit designs entered using the hardware description languages VHDL and Verilog HDL.
The Synopsys Design Compiler, FPGA Compiler, and FPGA Express tools support all Xilinx technologies and libraries included in the Alliance Series 1.5 software. For a more detailed description of The Xilinx Synopsys interface, see the Synopsys (XSI) Interface/Tutorial Guide.