altera niosii SOPC helloword learning

turbo product code used in error correction

基于FPGA设计的经典打砖块小游戏。游戏简单易玩。(FPGA design based on the classic Arkanoid game. Game easy to play.)

使用并行结构对32位数据进行前导零检测，使用Verilog编程(Use parallel structure to the 32-bit data, leading zero detection, using Verilog Programming)

模拟SDH帧结构，设计了状态机，能从连续传输的SDH字节流中找出帧头；从SDH字节流中，提取E2字节，并按照64K速率分别串行输出E2码流及时钟；设计了输入信号，输出包括E2串行数据、E2串行时钟和SDH帧头位置指示

The ElectricTM VLSI Design System is an open-source Electronic Design Automation (EDA) system that can handle many forms of circuit design, including: * Custom IC layout * Schematic Capture (digital and analog) * Textual Languages such as VHDL and Verilog (The ElectricTM VLSI Design System is an open-source Electronic Design Automation (EDA) system that can handle many forms of circuit design, including:* Custom IC layout* Schematic Capture (digital and analog)* Textual Languages such as VHDL and Verilog)

说明：  4位二进制加法计数器的两种不同VHDL的描述,与比较。(4-bit binary addition of two different counter VHDL description, and more.)

verilog标准语法，还有很多的样例参考，学习的好资料。(Verilog standard grammar, there are many examples for reference, good learning materials.)

应用背景交通信号灯，自动检测有无行人，根据检测的状态来调节灯的状态，完整VHDL代码外加模拟仿真时序图关键技术 设计一个交通信号灯，有A、B两条路，装置自动检测A路口和B路口是否有人，RST信号能够将交通灯的状态置到A路绿灯亮，B路红灯亮，5秒钟检测一个状态，当A路口有人时，A路绿灯保持，每隔5秒检测一次，当A路口没有人了，绿灯变为黄灯，5S后再变为红灯，同时B路口变为绿灯，再5S后检测B是否有人，有人保持绿灯，没人变为黄灯，再变为红灯，依次进行~~

8位深，9位宽FIFO VHDL源码设计，如需改进可在此基础上扩展-8 deep, 9-bit wide FIFO VHDL source design, for improving on this basis can be extended

FPGA控制SRAM读写时序源码，代码桂发，新手一看就懂(FPGA control SRAM write timing source code Guifa novice understand at a glance)