dp_xiliux the CPLD Verilog design experiments, clock demo. code test.

这是篇<基于FPGA 的OFDM 宽带数据通信同步系统设计与实现>, 觉得甚是有用，大家共同学学。(This is the article <FPGA-OFDM-based broadband data communication systems design and implementation of synchronous> that even be useful, we all learn together.)

说明：  在FPGA实验操作系统实现ASK,FSK,PSK的调制解调，基带信号由M序列发生器产生，经过AD模块在示波器上进行显示，精油DA模块在同一块实验板上进行解调操作，生成信号控制LED灯的亮灭，并与调制输出信号在示波器上同时展示，并进行对比。基带信号为3MHz。(In the FPGA operating system experiment implementation ASK, FSK, PSK modulation and demodulation of the baseband signal generated by the M sequence generator, through the AD module on the oscilloscope display module, oil DA demodulation operation in the same block experiment board, the signal generation control LED lights off, and the modulated output signal displayed on the oscilloscope at the same time, and compared.)

由乘法器组成 单边带信号产生的 仿真源代码 msm (Composed of single sideband signal by the multiplier generated simulation source code msm)

说明：  用于实现FPGA硬件开发使用的加法器，需要注意的是用Verilog语言实现的(The adder used to realize FPGA hardware development needs to be realized in Verilog language)

合众大公司XILINX_V4实验箱原理图-United XILINX_V4 large companies schematic experimental box

地铁售票系统，基于VHDL，可实现站点设置，站点选择，选择购票数量，找零等一系列功能。-Metro ticketing system, based on VHDL, allows site settings, site selection, choose the number of tickets, Keep the change and a series of functions.

cyclone3_handbook-datasheet

每次开机都将次数加1 并存储到EEPROM。这样就能直观的看到机器的使用次数 用P1口 LED做为显示，次数大于256是将溢出，按复位模拟开机 或者直接通过开关开机(Each boot will add a number of times and stored to the EEPROM. So you can visually see the frequency of use of the machine as with P1 port LED display, the number is greater than 256 will overflow, analog power or press the reset switch power directly through)

步进电机定位控制系统，VHDL程序，里面有注释(Stepper motor position control system, VHDL program, there are comments)

verilog的入门级别的例子（转载）-Verilog entry-level examples (reproduced)