quartusii 三分频电路，大家帮参考一下，有什么问题

可编程逻辑器件cpld与单片机双向通信的源程序-Programmable logic device CPLD and MCU for two-way communication of the source

UART模块的VHDL语言设计(Design of VHDL language based on UART module)

ad9957的资料，内含有命令字生成器，适合使用该芯片的开发人员(ad9957 data, contains the command word generator for developers using the chip)

this program performs multiplexing and demultiplexing

反应速度测试小游戏，最小外设cpld游戏，带设计说明书(Reaction speed test games, the minimum peripheral cpld game, with design specifications)

图像降噪GUI界面，用到butterworth滤波器，中值滤波器和维纳滤波器，仅供参考。(noise reduction using media filter )

WM8731芯片的音效处理verilog代码， WM8731芯片是音频ADCDAC芯片(WM8731 audio processing chip verilog code, WM8731 chip audio ADC DAC chip)

帧激励产生器，用于VMM仿真中生成所需要帧以供测试所用(the use for test)

数字示波器实验，利用AD、DA和VGA三个外设来实现简易示波器，DA外设发送正弦波给AD外设，AD外设解析成数字信号将数据送给VGA外设进行显示。在VGA上可以看到DA外设发送的波形、波形频率和波形峰峰值。(In the experiment of digital oscilloscope, AD, DA and VGA are used to realize simple oscilloscope. DA peripheral transmits sine wave to AD peripheral. AD peripheral resolves into digital signal and sends data to VGA peripheral for display. The waveform, waveform frequency and peak value of DA peripheral can be seen on VGA.)