使用vhdl语言在altera公司的up3板上产生vga信号，里面有详细的解析和说明，是一个很好的教程。...

FPGA数字信号处理实现原理及方法的例程(FPGA digital signal processing principle and method routines)

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 .)

用VHDL编写的4、7、40、64、84计数器，可将程序中的具体数字设成任意值。-Using VHDL written 4,7,40,64,84 counter, you can program specific figures set to any value.

关于ALTERA DE2板上的文档资料，包括应用实例，用户文档和板上常用器件的技术文档(datasheets of ALTERA DE2)

比较详细的阐述了图像压缩的原理,并基于DSP和VHDL实现该系统,最后在FPGA上通过.(More detailed exposition of the principles of image compress, and VHDL-based implementation of the system, and finally in the FPGA.)

vhdl code for obtaining video output through vga port

这份代码完成的功能是通过蜂鸣器播放《梁祝》这首曲子，当然可以自行更改代码，以播放其它的乐曲，所用的硬件描述语言是VHDL，代码有四部分构成，顶层模块、预分频模块（产生基频）、音乐表格和分频模块（产生所需的各音调）。

this project is about FIR FIlter By VHdl codes in the ISE.

说明：  在FPGA实验操作系统实现ASK,FSK,PSK的调制解调，基带信号由M序列发生器产生，经过AD模块在示波器上进行显示，精油DA模块在同一块实验板上进行解调操作，生成信号控制LED灯的亮灭，并与调制输出信号在示波器上同时展示，并进行对比。基带信号为3MHz。(In the FPGA operating system experiment implementation ASK, FSK, PSK modulation and demodulation of the baseband signal generated by the M sequence generator, through the AD module on the oscilloscope display module, oil DA demodulation operation in the same block experiment board, the signal generation control LED lights off, and the modulated output signal displayed on the oscilloscope at the same time, and compared.)

用VERILOG语言实现的通用异步串行收发器（RS232收发器），波特率可设置，通讯稳定，已成功应用于实际项目。(VERILOG language with universal asynchronous serial transceivers (RS232 transceiver), the baud rate can be set, communication stability, has been successfully applied in actual projects.)