Using VHDL realize CPLD (EPM240T100C5) output of the VGA screen

通过vga通讯控制显示器显示七彩条文，通过quartus编译的程序，可用-Communication and Control through the vga display colorful provisions quartus compiled through the procedures that can be used

是verilog例子。初级适用。包括了简单的例子。-example. The initial application. Including a simple example.

PLL是数字锁相环设计源程序, 其中, Fi是输入频率(接收数据), Fo(Q5)是本地输出频率. 目的是从输入数据中提取时钟信号(Q5), 其频率与数据速率一致, 时钟上升沿锁定在数据的上升和下降沿上；顶层文件是PLL.GDF-digital phase-locked loop PLL design source, in which Fi is the input frequency (receive data), Fo (Q5) is the local output frequency. Objective is to extract data input clock signal (Q5), its frequency and data rate line, the clock rising edge of the lock data the rising and falling edge; top-level document is PLL.GDF

能产生正弦波、三角波、方波和e指数衰减的扫频波，且相关参数可调(Can produce sine wave, triangle wave, square wave, and e exponential decay wave sweep and adjustable parameters)

6级流水，verilog实现浮点数的加法，其中浮点数格式符合IEEE754标准-6 water, verilog realize the floating point adder, in which floating-point format in line with the IEEE754 standard

Fixed-point base-2 logarithm (DW_log2) // Computes the base-2 logarithm of a fixed point value in the // range [1,2).

说明：  使用FPGA实现中值滤波算法，能够使数据直接使用该系统对数据进行中值滤波。(FPGA is used to realize the median filtering algorithm, which can make the data directly use the system for median filtering.)

基于DDS的BPSK调制器设计Verilog源码( U57FA u4E8.08 u868)

xilinx的zed板详细开发资料，对初学者和开发人员都有帮助(The Xilinx zed board detailed development information, helpful for beginners and developers)

附件 介绍了如何 使用compxlib命令编译Xilinx的ModelSim仿真库，创建这个仿真库对ISE调用modelsim是必不可少的一步,该法完全自动化，免去繁杂的手动操作，是创建这个仿真库最简洁的方法之一-Annex compxlib introduce how to use Xilinx