本程序实现任意占空比产生，已经在easyfpga030综合过

基于NIOS II的SD CARD MUSIC PLAYER源码，包括硬件SOPC-NIOS II based on the SD CARD MUSIC PLAYER source, including hardware SOPC

Verilog code to calculate Sobel

verilog写的数字频率计的选择模块,用与显示的选择-written in Verilog digital frequency meter option module, used and display options

实现简单的硬件加法器、除法器，实现源码文中注释(Realize simple hardware adder and divider, realize source code)

完整的用VERILOG语言开发的USB2.0 IP核源代码，包括文档、仿真文件-complete with verilog language development USB2.0 IP source code, including documentation, Simulation documents

下面是各种文件，有 vhdl 代码和进位保留加法器的验证平台，进行超前进位加法器，等等。综合和代码已经模拟了。 给出的所有加法器是 16 位加法器，并实施新思科技。

主要论述了基于FPGA的末制导雷达伺服系统设计。结合末制导雷达讨论其电机控制、二阶伺服系统性能和PID校正算法,利用VHDL语言设计,实现基于FPGA的方位步进电机开环定位控制和俯仰直流电机闭环速度控制的伺服系统。结合实际应用中遇到的问题,提出了基于"反馈控制"理论的有效的补偿算法,该算法提高了伺服系统的稳定性、快速性和精度。(Mainly discusses the design of terminal guidance radar servo system based on Field Programmable Gates Array(FPGA).It includes the system’s electric machine control,second-order servo system performance and PID correction algorithm based on Virtual Hardware Description Language(VHDL) on azimuth stepping motor open loop positioning control and pitch direct current electric machine closed loop speed control of the FPGA servo system.In allusion to some factual problems during its application,presents corresponding effective solutions based on traditional control theory "Feedback Control".The fact proves that these methods can greatly improve the stability,speediness and precision of the original servo system.Additionally,a basic algorithm which can be realized in a terminal guidance radar servo system is given)

用verilog实现dsp与Fpga接口的同步设计，其功能包括读写操作及四个功能模块，采用两个fifo实现不同时钟域的地址与数据的转换，在quartus ii11.0环境下运行，运行此程序之前需运行将调用fifo。(Dsp using verilog achieve synchronization with Fpga interface design, its features include read and write operations and four functional modules, using two different clock domains to achieve fifo address and data conversion in quartus ii11.0 environment to run, run this program required before running calls fifo.)

将VHDL程序下载到DE2开发板，引脚分配时需要知道的芯片每个引脚功能(VHDL program will be downloaded to the DE2 development board, you need to know when the pin assignments for each pin of the chip functions)

说明：  Micron公司m73a系列nand flash仿真模型及测试文件(micron m73a series nand flash simulation model and testbench)