基于FPGA的乐曲发生器电路设计 附含源代码（quartersii环境下运行）...

支持GF(2^n)域的rs编解码，可直接修改参数实现不同方式的RS编码和解码(This program is an encoder/decoder for Reed-Solomon codes.)

DDS的VHDL程序，相当好，值得下载，共享才是王道(DDS, VHDL program is quite good, worth downloading, sharing is king)

一个以太网卡的硬件描述，可以参考进行设计网卡芯片。-an Ethernet card hardware description, reference card chip design.

文件描述的是SDH 指针处理和系统同步代码 veriolg(SDH pointer processing and system synchronization code veriolg of file Description)

VIVADO 从此开始,详细讲解了vivado,FPGA开发工具的使用，对于初学者学习VIVADO工具很有用。(VIVADO from now on, explained in detail the use of vivado, FPGA development tools, for beginners to learn VIVADO tools very useful.)

de2-115引脚的配置，quartusII的设置(de2-115 configuration pins, quartusII settings)

This code implement a interation in cordic pipelline

FPGA实现FFT算法的源代码及工程文件，此工程为ISE工程项目。有详细的说明，可以运行。(FPGA Implementation of FFT algorithm source code and project files, this works for the ISE project. There are detailed instructions, you can run.)

本设计是基于FPGA设计一个地铁自动售票系统。 本设计采用自顶向下的模块化设计方法，基于FPGA使用VHDL语言设计制作一个地铁自动售票控制系统，该系统能出售2条线路3种不同价位的票，完成售票、找零、显示等功能。(The design is based FPGA design of a subway ticket vending system. This design uses a top-down, modular design method, a subway ticket vending control system based on FPGA using VHDL language design, the system can sell two lines of different priced tickets, complete the ticket, give change, display and other functions .)

说明：  nios开发板电路图CycloneII_NiosII_2C35_Rev02_DB_SCH.zip(nios development board circuit CycloneII_NiosII_2C35_Rev02_DB_SCH.zip)