这是使用VHDL编写的交通灯程序,供大家交流学习

8位大小比较器的VHDL源代码，Magnitude Comparator VHDL description of a 4-bit magnitude comparator with expansion inputs-eight compared with the size of the VHDL source code, Magnitude Comparator VHDL description of a 4-bit magnitude comparator inputs with expansion

可实现任意频率的LED点灯形式，只需改变分频次数和赋值就可以得到想要的的结果。可实现任意频率的LED点灯形式，只需改变分频次数和赋值就可以得到想要的的结果。可实现任意频率的LED点灯形式，只需改变分频次数和赋值就可以得到想要的的结果。可实现任意频率的LED点灯形式，只需改变分频次数和赋值就可以得到想要的的结果。可实现任意频率的LED点灯形式，只需改变分频次数和赋值就可以得到想要的的结果。可实现任意频率的LED点灯形式，只需改变分频次数和赋值就可以得到想要的的结果。可实现任意频率的LED点灯形式，只需改变分频次数和赋值就可以得到想要的的结果。可实现任意频率的LED点灯形式，只需改变分频次数和赋值就可以得到想要的的结果。可实现任意频率的LED点灯形式，只需改变分频次数和赋值就可以得到想要的的结果。

基于fpga的spi通信测试 可与stm32进行spi通信测试(SPI communication test based on FPGA can test SPI communication with stm32)

Xilinx开发板ML505的DDRII示例程序，使用Verilog，调用MIG，编译环境ISE11.1(Xilinx ML505 development board of DDRII sample program, using Verilog, called MIG, build environment ISE11.1)

异步FIFO控制器的Verilog设计与实现-Asynchronous FIFO controller Verilog Design and Implementation

xapp from xilinx very hard to find and very usefull application note from the great firm from USA

SOPC软件编程基础，用实例讲解，非常适合初学者。-SOPC software programming foundation, using examples to explain, very suitable for beginners.

很好的NAND Flash 硬件驱动语言，支持VHDL和verilog 语言方便移植，如果有想用FPGA直接驱动NAND flash而又不知如何下手的朋友肯定喜欢。(NAND Flash Controller Reference This reference design is used to interface a NAND Flash device and provides a simple host end interface. The host end interface of this design is user-configurable. It provides buffer select signal, buffer write enable signal, address bus, data bus, error status signal, control and handshake signals for the user......)

the booth algorithm to implement the 32bits multiplication.-the booth algorithm to implement the 32bit "s multiplication.

数字频率计，测量范围0-1GHZ,测周测频自动转换，精度极高，花了很长时间，不过还是有一点点小问题，有待改进.(Digital frequency meter, range 0-1GHZ, automatic conversion measured weekly frequency measurement, high precision, took a long time, but still a little small problems to be improved.)