VHDL_modelling_guidelines是vhdl建模开发的指导资料

I2C端口的FPGA实现，网上较多，但发现不少有问题，这个是在网上代码的基础上修改过，验证可行。-I2C port FPGA, online more, but found that many problems This is a code on the Internet on the basis of the revised test feasible.

led 点阵显示led――rom实现，功能模块分离 就爱可根据卡加大公开吉安市贷款给经济 -led dot matrix display led-- rom realized, functional modules can be separated on the basis love Cagayan open to the public Ji"an City loans to the economy

16*16点阵横向移动显示！采用QUARTUS II 9.0编译通过！(16* 16 dot matrix display lateral movement! Compiled by using QUARTUS II 9.0!)

FPGA功耗分析工具EPE用于分析FPGA系统的功耗(FPGA power analysis tools EPE is used to analyze the power consumption of the FPGA system)

用VERILOG实现自动售货机功能，运行正确，希望有帮助(Use VERILOG implementation vending machine function, correct operation, hope to have help)

Nexys-4-DDR-XADC 开发板demo(Nexys-4-DDR-XADC e.v. Board demo)

FPGA／CPLD技术是近年来计算机与电子技术领域的又一场革命。本书以Xilinx与Altera公司的FPGA／CPLD为主，详细介绍了FPGA／CPLD从芯片到MAX+plusⅡ、Quartus与ISE开发环境和Verilog／VHDL语言，并以交通灯逻辑控制、电子钟与点阵LED显示、LCD液晶显示及计算机ISA接口和PCI接口的设计等为例，由浅入深地详述了如何应用FPGA／CPLD进行电子设计。书中的大多数电路图和源程序已经过实例验证，读者可以直接应用于自己的设计。本书的特点是强调实用性和先进性，力求通俗易懂。 本书适用于计算机、电子、控制及信息等相关专业的在校大学生，对广大工程技术人员也具有实用价值。(FPGA/CPLD technology in recent years the field of computer technology and electronic another revolution. Book Xilinx and Altera' s FPGA/CPLD based, detailing the FPGA/CPLD from the chip to MAX+plus Ⅱ, Quartus and ISE development environment and Verilog/VHDL language and logic control traffic lights, electronic bell with dot matrix LED display , LCD liquid crystal display and computer ISA interface and PCI interface design, for example, progressive approach to detail how the application of FPGA/CPLD for electronic designs. Circuit and the source of most of the book have been instances of verification, the reader can be directly applied to their own design. Characteristic of this book is to emphasize the practical and advanced, best straightaway. This book applies to computers, electronics, control and information and other related professional college students, the majority of engineering and technical personnel also has practical value.)

外部ADC采集数据，存为数组文件。通过程序读入，然后即可求出ADC的SNR、SINAD、THD、ENOB等。(External ADC data collection, stored as an array of documents. Read through the program, then the ADC SNR, SINAD, THD, ENOB can be calculated.)

设计一个十进制计数器模块，输入端口包括 reset、up_enable 和 clk，输出端口为 count 和 bcd，当 reset 有效时（低电平），bcd 和 count 输出清零，当 up_enable 有效时（高电 平），计数模块开始计数（clk 脉冲数），bcd 为计数输出，当计数为 9 时，count 输出一 个脉冲（一个 clk周期的高电平，时间上与“bcd=9”时对齐）(Design of a decimal counter module, input port, including the reset up_enable clk, output port for the count and bcd, when reset is active (low), the bcd and count output cleared up_enable active (high), count module starts counting the (the CLK pulse number), the BCD count output when the count 9, the count output of the high level, the time of a pulse (a clk cycle with " bcd = 9" when aligned))

double edfe trigger d latch