Golden Week Ligong Verilog HDL reference guide, learning VerriLog things.

FPGA实现四位数与四位数乘法，有仿真波形，合理利用FPGA资源(Four-digit and four-digit multiplication is realized by using FPGA. It has simulation waveform and makes rational use of the resources of the FPGA.)

自己总结的Altera_LVDS的IP核的设计及仿真分析，已在实际工程中应用到，并且带有源代码和仿真代码，总结的文档，非常有用。(My summary of the Altera_LVDS IP kernel design and simulation analysis, has been applied in practical engineering, and with source code and simulation code, summary of the document, very useful.)

Altera 基础篇公司书籍源码-Altera Corporation based on chapter books-source

基于状态图的光电编码器4倍频vhdl程序，输入相位差90度的两相，输出倍频和方向信号-Based on the state of the optical encoder Figure 4 multiplier vhdl procedure, enter a 90-degree phase difference of two-phase, frequency and direction of the output signal

异步FIFO 设计源代码，内涵完整的verilog源代码和测试代码。-Source code for asyn_fifo using verilog language.

存储示波器，功能齐全通过验证，毕业设计用-Storage oscilloscope, a full-featured validated, graduation design

USB Blaster full production data

A 4 bit twisted ring counter is a sequential circuit which produces the following sequence of output values: 0000, 1000, 1100, 1110, 1111, 0111, 0011, 0001 and then repeats. Design a circuit for a 4 bit twisted ring counter that uses four D flip flops. Draw a state transition diagram, a state table and a schematic for your circuit. Design an alternate implementation using just three flip flops and draw a state transition diagram, state table and a schematic for your circuit. If your designs are extended to implement an n bit twisted ring counter, how many flip flops are required using each of the two approaches. In what situations would you prefer the first method? In what situations would you prefer the second?

《Verilog HDL 程序设计教程》3-"Verilog HDL Design Guide" 3

Spartan 3E上的Rotary encoder控制程序，及验证它的小灯程序(Rotary encoder on the Spartan 3E control procedures, and verification procedures for its small light)