随机数发生器

UART自适应波特率发生器，其中是以文档的形式来介绍怎样实现UART波特率发生器的实现(Adaptive UART baud rate generator, which is in the form of a document to describe how to achieve the realization of UART baud rate generator)

这是fpga按键消抖的源代码，在很多fpga按键实验中都可以用到，能够进行代码移植。(This is the source code of the FPGA buttons, in many FPGA key experiments can be used, and can carry out code.)

Rst是低电平有效的系统复位信号，Clk是时钟信号。AB[5：0]是地址信号，DB[7：0]是数据信号，wr是低电平有效的写信号。start是启动信号。 模块中有一个64x8的双端口的存储器。系统复位结束后，可以通过AB、DB和wr信号向同步存储器写入数据。当写入64个数据后，给出一个Clk周期宽度的脉冲信号start，则系统从存储器0地址处开始读出数据，读出的8位数据从低位开始以3位为一组，每个时钟周期输出一组，即第一个时钟周期输出[2：0]位，第二个时钟周期输出[5：3]位，第三个周期输出1地址的[0]位和0地址的[7：6]位，直至将存储器中64x8数据全部输出。若最后一组不足三位，则高位补0。 (Rst is an active-low system reset signal, Clk is a clock signal. AB [5: 0] is the address signal, DB [7: 0] is the data signal, wr write signal is active low. start is the start signal. Module in a dual port memory of 64x8. After the reset, you can write data to the synchronous memory by AB, DB and wr signals. When data is written to 64, given the width of a pulse signal Clk cycle start, the system begins to read the memory address 0, 8 data read out a low starting with three as a group, each clock outputs a set period, which is the first clock cycle of the output [2: 0] bits, the second clock cycle output [5: 3] position, the third cycle of the output of an address [0] and 0 address [7 : 6] bit, until all the data in memory 64x8 output. If the last group of less than three, the high 0s.)

RS编码是一种纠错码，本程序实现RS（255，223）用FPGA 实现RS编码，程序在Quartus II中调试通过。(RS coding is an error-correcting codes, the procedures for the realization of RS (255,223) with FPGA realization of RS codes, in the Quartus II program through the debugger.)

一个AD9764的基于FPGA的驱动，希望对有需要的朋友有所帮助(An AD9764 FPGA-based drive, we want to help a friend in need)

基于FPGA的门级逻辑实现快速乘法运算的verilog源程序。-FPGA-based gate-level logic implementation of rapid multiplication of the verilog source.

VHDL编写的4个led灯循环明暗变化，通过改变波形占空比实现，课堂作业自编程序-VHDL prepared by the four led lights cycle shading changes, by changing the waveform duty cycle to achieve, self-compiled class operating procedures

vhdl实现vga接口设计，非常实用的一段代码，学习用-vhdl achieve vga interface design

用游戏把子上下左右控制蛇的方向，寻找吃的东西，每吃一口就能得到一定的积分，而且蛇的身子会越吃越长，身子越长玩的难度就越大，不能碰墙，不能咬到自己的身体，更不能咬自己的尾巴，等到了一定的分数，就能过关，然后继续玩下一关。

Verilog HDL 高级数字设计源码 _chapter4(Advanced Digital Design Verilog HDL source _chapter4)