=== Why NEXYS2 500kgates starter kit ===
==== Xilinx schematics ====
Xilinx webpack software permit drawing schematics as book schematics, My point of view is : "For programming a FPGA, you draw a schematics schematic as old books and just press one button. Each component on this schematic can be edit, in a language called VHDL".
My source code is not Altera compatible because of schematics drawn, but webpack can export vhdl code from schematics if you want.