很少有完整介绍ISE环境下FPGA开发的资料，这是在Xilinx ISE开发平台下进行FPGA设计比较好的教程，感觉挺不错的-there is few full descr iption ISE FPGA development environment information, which is in the Xilinx ISE development platform for FPGA design is a good tutorial, I feel pretty good