通过实例的VHDL程序设计

一款240＊128的LCD模块在ALTERA　FPGA　NIOS中的应用，自己写的AVALON总线IP，包括所有源码，可轻松用于NIOS中，供大家参考-A 240* 128 LCD module in the ALTERA FPGA NIOS application, write your own AVALON Bus IP, including all source code can be easily used in NIOS for reference

在fpga中对于pll无法完成的分频，可采用计数方式，本例用状态机实现对时钟的奇数分频。(Pll in fpga can not be completed in the sub-frequency counting method can be used, in this case with the state machine to achieve an odd number on the clock frequency.)

本原代码中利用VHDL语言编写了RAM、FIFO、ROM等常用的存储和缓冲部件，完全的代码在ALTERA的FPGA上已经通过仿真测试，保证可用.-primitive code using VHDL prepared RAM, FIFO, ROM, and other commonly used storage and buffer components, complete code in the Altera FPGA simulation test has been passed to ensure that available.

DDR2 SDRAM仿真模型，适合于ModelSim下工作，请先阅读readme(DDR2 SDRAM Simulation Model which is suitable for modelsim. Please read readme file firstly.)

cycloneIII_3c120_dev_power_demo atlera公司官方例程(cycloneIII_3c120_dev_power_demo atlera company official routines)

循环冗余校验码(试验报告)-Cyclic Redundancy Check (pilot reports)

用FPGA实现OFDM系统，硬件语言为Verilog，环境为xilinx，详细介绍了接收机和发射机各个模块的源代码(OFDM system with a FPGA implementation, hardware language Verilog, environment xilinx, details of receiver and transmitter modules source code)

该书介绍了英特尔的80x86CPU和一些串行通信芯片，以及汇编语言。(The book introduces the Intel 80x86CPU and some serial communications chip, and assembly language.)

用VHDL编写的曼切斯特编解码，适用于以太网上流行的基带传输数字编码。(Manchester encoding and decoding written using VHDL, popular Ethernet baseband transmission of digital coding.)

一种压缩感知信号恢复算法，针对贪婪迭代类算法中的正交匹配追踪（OMP)算法的改进。OMP在每次迭代过程中选择出的原子并不是最优的，无法使本轮迭代中残差的减少最大化。本例程实现了改进的最优OMP算法，即Optimised_OMP，保证每次迭代选出的原子与已选出的原子序列所构成的平面正交，因而可以使残差下降的更快，从而加速算法收敛。(A compressed sensing signal recovery algorithms track (OMP) algorithm and orthogonal matching algorithm greedy iterative class. The OMP selected atoms in each iteration of the process is not optimal, not be able to maximize the reduction of the residual in the current round of iteration. The routines to achieve the optimal OMP algorithm improvements that Optimised_OMP, to ensure that each iteration selected atoms with atomic sequence elected a plane orthogonal, and thus can make the residuals have declined even faster, thus speeding up the algorithm convergence.)