跑马灯程序FPGA

基于NIOS II 的DE1开发板的VGA 控制器VGA控制模块主要控制VGA模块的开始和其运行的状态，需要写一个Avalon 从端口响应CPU的控制信号，继而控制整个模块的运行，-Based on the DE1 of the NIOS II development board VGA controller to control the VGA module VGA main control module and its operation began, and the need to write a response to Avalon from the CPU ports of the control signal, and then control the operation of the entire module,

A VANET research program

辛辛苦苦的作品应用于DE2 的 开发。。希望对大家有用。-hard work for Dictyophora development. . We hope that the right useful.

这里面有许多vhdl的例子，相信对这语言的初学者受益匪浅-There are many examples of vhdl, I believe that beginners benefit from this language

SPI接口测试程序，Xilinx参考设计，ML507硬件测试通过.(SPI interface test code，Xilinx reference design，tested on ML507 platform.)

说明：  直接数字式频率合成器DDS设计、Verilog。 产生的信号可以是正弦波或方波、三角波、锯齿波等，自选。 采用DDS技术，将所需生成的波形写入ROM中，按照相位累加原理合成任意波形。 此方案得到的波形稳定，精度高，产生波形频率范围大，容易产生高频。 本实验在设计的模块中，包含以下功能： （1）通过 freq 信号输入需要的频率的值； （2）通过 wave_sel 信号选择所需的波形； （3）通过 amp_adj 信号选择波形放大的倍数。(DDS design of direct digital frequency synthesizer, Verilog. The generated signal can be sinusoidal or square wave, triangular wave, sawtooth wave and so on, optional. By using DDS technology, the required waveforms are written into ROM, and arbitrary waveforms are synthesized according to the principle of phase accumulation. The waveform obtained by this scheme is stable, accurate and easy to generate high frequency waveform. This experiment includes the following functions in the designed module: (1) Input the required frequency value through freq signal; (2) Choosing the required waveform by wave_sel signal; (3) Select the multiplier of waveform amplification by amp_adj signal.)

应用背景关键技术本书采用“做中学”介绍VHDL和FPGA技术的概念和设计人员通过一系列的实验方法。

fifo异步串口收发程序 FPGA程序(fifo asynchronous serial transceiver)

本程式為使用Verilog語言寫控制DRAM的控制模塊, 可以簡易的控制DRAM IC, 本程式已經過系統驗證.(program for the use of the Verilog language to write the control of DRAM control module, be easy to control DRAM IC, the program has been systematically verified.)

This code for countor . it is design in verilog HDL.