A useful practical VHDL Tutorial, it is suitable for beginners to learn, introdu...

verilog编写的QPSK发射机的ＦＰＧＡ部分，已经过验证，完全达到要求。调制矢量误差４％(QPSK transmitter verilog prepared by the FPGA portion, has been proven, fully meet the requirements. Modulation vector error of 4 )

基于fpga的uart串口通信协议，64位数据(Uart communication protocol based on fpga, 64-bit data)

全自动洗衣机的控制器。 1.洗衣机的工作步骤为洗衣、漂洗和脱水三个过程，工作时间分别为：洗涤10秒，漂洗5秒，脱水5秒； 2.用一个按键实现洗衣程序的手动选择：A、单洗涤；B、单漂洗；C、单脱水；D、漂洗和脱水；E、洗涤、漂洗和脱水全过程； 3.用显示器件显示洗衣机的工作状态（洗衣、漂洗和脱水），并倒计时显示每个状态的工作时间，全部过程结束后，应提示使用者； 4.用一个按键实现暂停洗衣和继续洗衣的控制，暂停后继续洗衣应回到暂停之前保留的状态； (Automatic washing machine controller. 1 washing machine work steps for the laundry, rinsing and dehydration three processes, working hours are as follows: washed for 10 seconds, rinse for 5 seconds, dehydrated five seconds 2 with a button to manually select the program to achieve laundry: A, single-washing B, single rinse C, a single dehydration D, rinsing and dehydration E, washing, rinsing and dehydration the whole process 3 with a display device display the working status of washing machine (laundry, rinsing and dehydration), and each state countdown show working hours, after the whole process should prompt the user 4 laundry with a button to pause and continue control of laundry, laundry should be back after a pause pause before continuing to retain the state )

说明：  adc器件ads62p49配置代码，已在工程中验证可用(Temperature sensor DS18B20 parses the code, has verified the ADC device configuration code, has been verified available)

用FPGA中的三速以太网来实现UDP通信，功能强大(With a triple-speed Ethernet in the FPGA to implement UDP communication, powerful)

MAX2 EPLD 的测试程序, VHDL语言编写.-MAX2 EPLD testing code, VHDL language.

说明：  环路滤波器是通信信号调制解调中最重要的一个部分，环路滤波器设计的好坏将直接影响到接收机的性能指标，二阶锁频辅助三阶锁相环路滤波器可以稳定跟踪具有加加速度的信号源，是现代通信中非常实用的技术，本文中详细编写了单载波信号产生模块、信道噪声模块、数字正交下变频模块、鉴频鉴相模块、环路滤波器模块，并包含了完整的testbench模块，对于初学者非常有用。(Loop filter is the most important part of communication signal modulation and demodulation. The design of loop filter will directly affect the performance index of receiver. The second-order frequency locking assisted third-order phase-locked loop filter can stably track the signal source with acceleration speed, which is a very practical technology in modern communication. In this paper, the single carrier signal generation module and channel noise are written in detail Sound module, digital orthogonal down conversion module, frequency and phase detection module, loop filter module, and contains a complete testbench module, which is very useful for beginners.)

这是一个基于NIOSII的俄罗斯方块游戏设计，是基于FPGA的，利用流模式DMA传输实现游戏。(This is a box based on the Russian NIOSII game design, is based on the FPGA, and the use of streaming mode DMA transfer realize the game.)

VHDL实现简单打地鼠游戏机，北邮数电实验(VHDL simple playing hamster games, BUPT number of electric experiment)

实现基于FPGA的vga显示，亲测能编译得过，不同开发版应该要相应改动（PS: 不太了解）