VHDL ip core的设计，软核的设计方法

This tutorial explains how to communicate with IO devices on the DE2 Board and how to deal with interrupts using C and the Altera Monitor Program. Two example programs are given that diplay the state of the toggle switches on the red LEDs. The fi rst program uses the programmed I/O approach and the second program uses interrupts.-This tutorial explains how to communicate with IO devices on the DE2 Board and how to deal with interrupts using C and the Altera Monitor Program. Two example programs are given that diplay the state of the toggle switches on the red LEDs. The fi rst program uses the programmed I/O approach and the second program uses interrupts.

以太网总线源代码，里面有详细的文档说明，已经过FPGA验证。-Ethernet bus source code, which has a detailed document that has been FPGA verification.

这是基于Quartus2 开发环境和verilog hdl语言写的38译码器(This is based development environment and Quartus2 verilog hdl language used to write decoder 38)

黑金刚FPGA开发板使用说明文档，讲诉了NIOS和Qsys的详细开发步奏，值得学习。(KINGBOX FPGA development board documentation, recounts in detail the development of step-outs and Qsys NIOS, it is worth learning.)

很好的NAND Flash 硬件驱动语言，支持VHDL和verilog 语言方便移植，如果有想用FPGA直接驱动NAND flash而又不知如何下手的朋友肯定喜欢。(NAND Flash Controller Reference This reference design is used to interface a NAND Flash device and provides a simple host end interface. The host end interface of this design is user-configurable. It provides buffer select signal, buffer write enable signal, address bus, data bus, error status signal, control and handshake signals for the user......)

zedboard的资料说明书，可以帮助你理解(zedboard data sheets, can help you understand)

URAT VHDL程序与仿真 URAT the VHDL program and Simulation (URAT the VHDL program and Simulation )

篮球24s计时。计时器递减计数到零时，数码显示器显示‘0’并停止，同时发出报警信号(basketball 24 seconds)

说明：  A low pass filter module based on FPGA, easy to transplant

本文提出了一种使用4根元素蝶形（m，n）计数器来降低硬件复杂度、延迟、功耗的传统加法器的使用方法。并针对FFT算法提出了一种改进的换向器，利用流水线传输实现了连续输入数据与信息的结合，减少了内存需求。