This procedure to design an FPGA

说明：  verilog编写的RS485读写驱动程序(RS485 read-write driver written by Verilog)

说明：  基于FPGA的信号发生器，产生了正弦波，方波，锯齿波和三角波四种波形，按下一次按钮，波形切换一次。按下另一个按钮，改变波形的频率(The signal generator based on FPGA can generate four kinds of waveforms: sine wave, square wave, sawtooth wave and triangle wave. Press the button once and switch the waveform once. Press another button to change the frequency of the waveform)

xilinx FPGA技术详解,从设计流程到设计注意点(xilinx FPGA technology Detailed Design points, from the design process to)

基于fpga和xinlinx ise的串行通信vhdl程序，希望对你有所帮助！-xinlinx and ideally serial communications VHDL process, and I hope to help you!

有用的VHDL源代码-useful VHDL source code

改程序将实现对两个信号的曼切斯特编码，以用仿真软件验证过了(Reform program will achieve two Manchester encoded signal to a validated using simulation software)

verilog 键盘输入程序，用于led灯的显示-Verilog keyboard input program for led lights display

说明：  功能是（用Verilog语言的，内有比较详细的注释）： （1）计数器的功能是从0到9999计数，并能以十进制数的形式在七段数码管上显示出来(包括七段数码管显示模块). （2）该计数器有一个1个nclr和一个adj_plus端，在控制信号的作用下（见下表），计数器具有复位、增或减计数、暂停的功能。编写以上的程序的完整模块. 计数器的功能表 nclr adj_minus 功 能 0 0 复位为0 0 1 递增计数 1 0 递减计数 1 1 暂停计数 (Function is (with Verilog language, the more detailed comments): (1) counter function is from 0 to 9999 counts, and are able to form a decimal number on the seven-segment LED display (including the seven-segment LED display module). (2) The counter has a one nclr and a adj_plus side, under the action of the control signal (see below), the counter has reset, increase or decrease of count pause function. Complete the preparation of the above program modules. Counter function menu nclr adj_minus reset 0 0 0 0 1 1 0 counts counting suspended Count 1 1)

基于QuartusII环境下以模块化的形式做成的视频复合同步信号。-QuartusII-based environment to create the form of modular composite video sync signal.

用VERILOG语言实现的通用异步串行收发器（RS232收发器），波特率可设置，通讯稳定，已成功应用于实际项目。(VERILOG language with universal asynchronous serial transceivers (RS232 transceiver), the baud rate can be set, communication stability, has been successfully applied in actual projects.)