ahb slave code

这是一个基于Quartus2 开发环境的4输入加法器( 4adder basic on Quartus2)

ADC芯片ADS8329数据采集的verilog代码，已经用在工程中，没问题。(ADC chip ADS8329 data acquisition Verilog code, has been used in the project, no problem.)

AHB BUS 的一些接口代码， verilog, 希望对初学AHB总线的兄弟有所帮助。 里面包含 ahb decode, ahb_mux and ahb2mem. 以及相应的验证环境， 此代码只用于学习，如果用于项目，仅供参考。

这本书主要描述了如何使用system Verilog 建立测试平台和行为级模型(This book will describe how to use the system Verilog test bench and the establishment of behavioral models)

quartus license dede(quartus 11.0 license)

有关gal器件的编程入门，以及常见逻辑门、计数器VHDL程序(For gal device programming entry, as well as common logic gates, counters VHDL program)

HDB3 encoder and decoder(HDB3 decoer)

语言代码编码中用于添加 2 xilinx 浮点数...... 和此编码中使用的技术是 piplining......

四位拨妞开关作为输入，当输入值变化时将其转化成两位输出(The four DIP Niu switch as an input, when the input value changes, be converted into two output)

在数字通信中，通常直接从接收到的数字信号中提取位同步信号，这种直接法按其提取同步信号的方式，大致可分为滤波法和锁相法。锁相法是指利用锁相环来提取位同步信号的方法，本设计方案就是基于锁相环的位同步提取方法，能够比较快速地提取位同步时钟，并且设计简单，方便修改参数。采用Quartus II设计软件对系统进行了仿真试验，并用Altera的Cyclone II系列FPGA芯片Ep2c5予以实现。(In digital communication, usually from receiving directly in digital signal extracted a synchronized signal, the direct method according to the extraction synchronized signal way, can be roughly divided into filtering method and phase lock method. Phase lock method is using of phase locked loop to extract a synchronized signal method, the design scheme is based on phase locked loop of a synchronous extraction method and can be quickly extract a synchronous clock, and design simple, convenient modification parameter. The Quartus II design software of the system, and the simulation test Altera Cyclone II FPGA chip to achieve Ep2c5 series.)