AHB 仲裁

带时钟分频器的计数器的代码是用verilog编写的。代码是用verilog HDL编写的，完全可以合成，可以在FPGA上实现；

Traffic light program in c presents what happens in our daily life at traffic light signals.

8b10b编解码，用于光通信和千兆以太网，verilog编写，已验证(8b10b codec for optical communications and Gigabit Ethernet, verilog prepared Verified)

cvery high compatibles for quartus

说明：  基于ALINX AX7020硬件平台的USB-OTG通信程序。操作系统采用uCOS III v1.41，基本实现了双向USB2.0 块传输（Bulk Transfer）通信，zynq的PS端接收USB数据并回传至主机。经测试，主机端Window10系统采用libUSBK编程时，采用64字节的块时，传输速率可达210Mbps。zynq开发工具为Vivado2015.4，程序包中包含了全部的硬件和软件工程文档。(A USB-OTG communication project where an AX7020 platform is employed as USB device. The embeded operating system is uCOS III of version 1.41, and the FPGA toolchain is Vivado 2015.4. This project implements a full speed bidirectional USB2.0 bulk transfer. A test on Windows 10 host with libUSBK shows that the transfer speed is up to 201Mbps.)

说明：  fpga串口收发完整程序，Verilog语言。(FPGA configuration PLL complete program, Verilog language.)

RISC-V 芯片设计规范,很有参考价值，开源芯片设计必备参考资料，希望对大家有帮助。(The RISC-V Foundation is chartered to standardize and promote the open RISC-V instruction set architecture)

fir低通滤波器 用于dspbuilder pll：25nss data 400khz sin 10.8khz 已通过测试。 (fir low pass filter for dspbuilder pll: 25nss data 400khz sin 10.8khz has been tested.)

使用Verilog HDL 语言在cyclone IV 上实现功能按键控制灯，主要目的是实现按键的消抖程序，加深理解Verilog HDL 语言的并行执行方式

自己编写的C++的类的测试程序，有详细的注注释，对初学者有很大帮助！！！(The own written C++ class test program, detailed annotation of Note of great help for beginners! ! !)