基于FPGA的多波形发生器 基于FPGA的多波形发生器

NIOS II IDE 编程， uart_txd测试程序，仅供参考。-NIOS II IDE programming, uart_txd testing procedures, for information purposes only.

bch编解码的完整版，本人已经做过fpga实现，就是按照该程序为原型，绝对可运行(bch decoding the full version, I have done fpga implementation is in accordance with the procedure for the prototype, can certainly run)

cyclone和cyclone2用在5v系统里使用方法,使得FPGA芯片在5V系统中兼容-cyclone and cyclone2 system used in the use 5v, making FPGA chip compatible with the 5V system

 交通灯控制器控制红（r）、绿（g）、黄（y）三种不同颜色的交通灯，这三种不同颜色灯的亮、灭分别由三个定时器（timer1、timer2、timer3）控制；  当某个定时器工作时，它所控制的交通灯亮，直到设定的定时时间到（该定时器状态由’0’变’1’），交通灯跳转到另一种状态；  clk是脉冲控制端（图中未标出）；reset是异步复位端，复位状态为红色交通灯亮；  输出端r、g、y分别表示三种颜色交通灯的亮、灭状态。 ( traffic light controller control red (R), green (g), yellow (y) three different colors of traffic lights, three different colors of bright lights, off by three timer (Timer1, Timer2, Timer3 ) control  When a timer work, it controls the traffic lights, until the set timing (the timer status ' 0 ' for ' 1' ), traffic lights Jump to another state  clk is the pulse control terminal (not shown) reset is asynchronous reset terminal, the reset state for the red traffic lights  output terminal r, g, y represent the three colors of traffic lights bright, the off state.)

基于FPGA实现蜂鸣器播放音乐的功能 使用芯片为EP2C8Q208C8N,使用普通蜂鸣器，由于频率不同可实现放歌功能，本例设计的是《友谊地久天长》，使用Verilog语言编程，本例子有工程文件、仿真、波形，经过测试可以使用。(Play music based on FPGA buzzer functions using chip EP2C8Q208C8N, using ordinary buzzer, since the frequency of different functions can be realized sing, in this case the design is " Auld Lang Syne" , using Verilog language programming, this project examples files, simulation, waveform, tested can be used.)

应用背景这个无损数据压缩系统的xmatchpro算法 衍生物；从来源 ； ；以前的研究 ； ；的 ； ；作者 ；和 ；在进步 ； ；FPGA技术。使用这种技术提供的灵活性是非常大的兴趣，因为芯片可以容易适应特定应用的要求。这个在一定的弊端； ； ； ；以前的 ；方法是 ； ；克服了 ； ；使用 ； ；  xmatchpro  ；算法；设计。的目标，然后以获得更好的压缩比，并仍然保持高吞吐量和高吞吐量，因此，这和，压缩/解压缩和，过程和，不，不，慢和，原系统的。关键技术UNIX的 ； ；实用 ；“压缩” ；采用lempel-ziv-2  ； ； ；（LZ2）算法和 ； ； ；数据Lempel-Ziv压缩 ； ； ；（dclz）的家庭 ； ；压缩机 ；最初发明 ； ；的 ；休利特—目前帕卡德和 ； ；& nbsp；通过开发 ； ；啊哈[ 17 ]，[ 18 ]  ；使用也 ； ；LZ2  ；衍生物。邦顿 ；和 ；博列洛 ；另一本 ； ；LZ2  ；在实施 ； ；[ 19 ]  ；， ；提高 ；在 ；数据压缩Lempel-Ziv算法。

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说明：  Objects forming possible solution within original problem context are called phenotypes, their encoding, the individuals within the GA, are called genotypes. The representation step specifies the mapping the phenotypes onto a set of genotypes. Candidate solution, phenotype and individual are used to denotes points of the space of possible solutions. This space is called phenotype space. Chromosome, and individual can be used for points in the genotye space. Elements of a chromosome are called genes. A value of a gene is called an allele. Variation Operators The role of variation operators is to create new individuals old ones. Variation operators form the implementation of the elementary steps with the search space.

Xilinx FPGA reset usage

可实现两个4bit补码的加法及减法，有溢出提示(adder with overflow hint)