The source code for the Nios II development of an example, the main demonstratio...

基于FPGA设计的电子密码锁是一个小型的数字系统，与普通机械锁相比，具有许多独特的优点：保密性好，防盗性强，可以不用钥匙，记住密码即可开锁等。(FPGA-based design of the electronic code lock is a small digital system. It has many unique advantages：good privacy and security , it do not need the key but remember password to unlock, and so on while it compare to ordinary mechanical locks.)

基于System Generator的图像处理工程,多媒体处理FPGA实现的源码,基于视频的运动检测(System Generator based image processing engineering, multimedia processing on FPGA source code, based on video motion detection)

Inroduce the LEON 2 microprocessor

1．初始状态为4个方向的红灯全亮，时间1秒。 2．东、西方向绿灯亮，南、北方向红灯亮。东、西方向通车，时间30秒。 3．东、西方向黄灯闪烁，南、北方向红灯亮。时间2秒。 4．东、西方向红灯亮，南、北方向绿灯亮。南、北方向通车，时间15秒。 5．东、西方向红灯亮，南、北方向黄灯闪烁。时间2秒。 6．返回2，继续运行。 -1. Initial state for four whole direction of the red lights lit up, a second time. 2. East and West to the green, in the south, north to the red light. West and the East to open in time for 30 seconds. 3. East and West to the blinking yellow light, in the south, north to the red light. Time 2 seconds. 4. East and West to the red light, in the south, north to the green. South and North to the opening time of 15 seconds. 5. East and West to the red light, in the south, north to the flashing yellow light. Time 2 seconds. 6. Return 2, continued to operate.

模拟示波器的现实程序，有x，y和光标。采用AD5440输出，现实效果很好。（示波器x-y方式）(Analog oscilloscope reality program, there are x, y and cursor. Using AD5440 output, real good results. (Xy oscilloscope mode))

这是为了添加 4 位东西非常有用的携带看前面加法器。进位加法器(CLA) 是加法器在数字逻辑中使用的类型。进位加法器通过减少确定运载位所需的时间量提高速度。它可以用更简单，但通常速度较慢，波纹携带加法器计算旁边的总和位的进位位对比和每一位必须等待，直到已开始计算自己的结果和进行位 （见加法器细节上波纹的串行加法器） 计算前进行。进位加法器计算一个或多个执行总和，从而减少了等待时间来计算结果的较大值位的前位。Kogge 石加法器和布伦特-西贡加法器是加法器的这种类型的例子。

从bt656数据流中提取出同步信号, 适合于搞fpga/cpld开发调式(bt656 internel sync to extern sync singal， bt656 internel sync to extern sync singal)

采用CORDIC算法的直接数字频率合成器的设计(CORDIC algorithm uses direct digital frequency synthesizer design)

canbus verilog实现，原代码文件-canbus verilog implementation, the original source document

C51 verilog 源代码，可以在逻辑中实现51单片机功能-C51 verilog