本文通过大量的例子讲解VHDL。对于初学者来说是一本非常好的 教材...

8251的完整的功能的实现,可以进行编译,综合.-8251 complete function of the realization can be compiled and integrated.

这是我做UART时候做的一个发送器的源码，希望对大家有用。-This is what I did do a UART transmitter when the source and hope for all of us.

FIFO的VERILOG代码编写 可综合的Verilog FIFO存储器(The VERILOG code FIFO write comprehensive Verilog FIFO memory)

高斯最小频移键控（Gaussian Filtered Minimum Shift Keying），这是GSM系统采用的调制方式。数字调制解调技术是数字蜂窝移动通信系统空中接口的重要组成部分。GMSK调制是在MSK（最小频移键控）调制器之前插入高斯低通预调制滤波器这样一种调制方式。GMSK提高了数字移动通信的频谱利用率和通信质量。(Gauss Filtered Minimum Shift Keying is a modulation method used in GSM system. Digital modem technology is an important part of air interface of digital cellular mobile communication system. GMSK modulation is a method of inserting a Gaussian low-pass pre-modulation filter before the MSK (minimum frequency shift keying) modulator. GMSK improves the spectrum utilization and communication quality of digital mobile communication.)

ethernet mac core.this is the etherenet udp application

说明：  配置GTH ip的例子工程，选用7 series 芯片的GTH 113quad的四个通道，在程序中每个链路利用自己的恢复时钟进行数据解码，所以四个通道可以各自独立运行；成功工作在2.54Gb/s的链路状态，长时间（>24小时）的测试，误码率一直为0.(The GTH ip example project is configured with four channels of the GTH 113quad of the 7 series chip. Each link in the program uses its own recovery clock for data decoding, so the four channels can operate independently; the successful operation is at 2.54Gb/ The link state of s, long time (>24 hours) test, the bit error rate has been 0.)

说明：  该程序包是SD卡/MMC卡控制器SDC的verilog语言包，它包括以下4部分：RTL源代码，测试平台，软件仿真文件，说明文件。(This source package is the SD card and MMC card controler model based on the Verilog language. It has the following 4 parts: RTL language, testbench, software simulating files and help document.)

非常详细的千兆以太网MAC verilog代码，可以供硬件设计时有关网络的开发参考(Very detailed Gigabit Ethernet MAC verilog code, can be used for hardware design of the network to develop a reference)

sdram 代码在最后要强调的是，本专题以技术为主，由于篇幅的原因，不可能从太浅的方面入手，所以仍需要有一定的技术基础作保证，而对内存感兴趣的读者则绝不容错过，这也许是您最好的纠正错误认识的机会！

基于VHDL+FPGA的神经网络设计，实现简单的字符识别(Design of Neural Network Based on VHDL+FPGA to Realize Simple Character Recognition)