SPI接口的vhdl代码，可以实现与单片机的spi通信，完整的工程

用PrimeTime的技巧，解决复杂时钟问题。(The world of telecommunications chips is full of messy clocking situations. This paper will cover the tricks and tehniques that author Paul Zimmer has developed to avoid the need to pour over reams of timing reports looking for problems. Best paper winner at SNUG San Jose 2001!)

基于Xilinx公司的ISE软件开发的智能循迹避障小车的源代码，用Verilog语言，传感器有红外传感器以及超声波传感器(Xilinx' s ISE-based software development intelligent car tracking avoidance source code, using Verilog language, the sensor has an infrared sensor and ultrasonic sensors)

xilinx提供的频率发生器的VHDL源码，可以运行在spartan3的学习开发板上。-xilinx the frequency generator VHDL source code, spartan3 can run in the learning development board.

说明：  基于CycloneV FPGA与电阻网络的数模转换器代码，能够实现键控更改频率，通过ROM IP核存储波形数据。(Digital to analog converter code based on cyclonev FPGA and resistance network can realize keying change frequency and store waveform data through ROM IP core.)

fpga程序，产生1pps脉冲信号，使用的verilog语言。(FPGA program generates 1 PPS pulse signal, using Verilog language.)

设计要求1） 每帧数据供 10 位，其中 1位启动， 8位数据， 1位 停止。2） 波特率为： 9600 。3） 收发误码率

关于5-11APSK在高斯信道中的误码率分析仿真程序，对具体调制方式及解码方式都有详细的过程(About 5-11APSK in Gaussian channel bit error rate analysis simulation program, has a detailed specific modulation and decoding process)

说明：  基于ofdm系统的各个模块的VHDL程序，软件是用的ISE仿真的。绝对有用。(Ofdm systems based on VHDL program of each module, the software is to use the ISE simulation. Absolutely useful.)

在BASYS3上实现跑马灯的功能。第一LED交替闪烁；第二LED由左至右逐个变亮，再逐个变暗；第三LED由右至左逐个变亮，再逐个变暗；第四LED由两边逐个变亮，再从中间逐个变暗。(Realize the function of the horse light on BASYS3. The first LED flashes alternately; second LED brightens from left to right and then darkens one by one; the third LED turns from right to left, then darkens one by one, and then darkens one by one; fourth LED is brightened by both sides, and then darkening from the middle.)

蜂鸣器音乐演奏，有ppt说明，及实例工程文件。(Music buzzer, a ppt notes, and examples of engineering documents.)