基于DDS的移相信号发生器的设计

说明：  是用VHDL语言编写的乐曲演奏程序，详细的写了各个模块的子程序(VHDL language is the music playing program)

基于FPGA的i2s接口输入模块设计，其中有原理图和verilog源码，可在Quartus环境下进行仿真(FPGA-based i2s interface input module design, including schematics and verilog source code, can be simulated in Quartus environment)

关于LDPC解码的verilog程序，包含设计代码和验证环境(LDPC decoding on verilog procedures, including the design code and verification environment)

篮球24s计时器，元器件简单，功能复杂。满足小型计时需要。

xilinx提供的频率发生器的VHDL源码，可以运行在spartan3的学习开发板上。-xilinx the frequency generator VHDL source code, spartan3 can run in the learning development board.

试设计一种彩灯控制器控制8盏灯。该彩灯控制器有4种自动切换的花样。第一种花样为彩灯从右到左，然后从左到右逐次点亮，全灭全亮；第二种花样为彩灯两边同时亮一个逐次向中间移动再散开；第三种花样为彩灯两边同时亮两个逐次向中间移动再散开；第四种花样为彩灯两边同时亮三个，然后四亮四灭，四灭四亮，最后一灭一亮。四个花样自动变换，重复以上过程。输入时钟频率为500Hz，灯亮的时间在1―4秒之间，可以自由控制。电路中以“1”代表灯亮，以“0”代表灯灭。-Lantern try to design a controller to control 8 lights. The controller has four kinds of lanterns automatically switch the pattern. The first lantern pattern for right-to-left, and then lit from left to right each time, the whole body light second pattern for a lantern light at the same time on both sides of successive spread to the middle of moving again third pattern for lantern light at the same time on both sides to the middle of two successive re-dispersed mobile fourth pattern for the lantern light at the same time on both sides of the three, then four out four bright, four out four-liang, the last light out. Automatically transform the four patterns, repeat the process above. Input clock frequency of 500Hz, the time for lights between 1-4 seconds, they can con

说明：  NAND FLASH的多个仿真模型，可以用于接口设计的测试(NAND FLASH multiple simulation model that can be used for the test interface design)

freeDev数字应用开发板中的VGA控制器的IP核的verilog实现-freeDev digital application development board of the VGA controller IP core implementation of the verilog

基于VHDL的多路抢答器，用LCD12864进行显示(Multiplex answering device based on VHDL is displayed with LCD12864)

对pci9054芯片的配置进行了设置，并对PCI9054的各状态机进行了设置，程序经过了测试(Pci9054 chip on the configuration of the set, and each state machine PCI9054 been set, the program have been tested)