ALTERA Cyclone1C20 Nios开发板，protel99格式

基于VHDL语言描述的一个分频器，根据端口值，可作为四分频，八分频等分频器使用。-based on VHDL description of a divider, according to port value, as a quarter of frequency, Frequency Divider interval such use.

ModelSim的使用如何操作和使用以及安装如何安装

Opencore的IP Core，有实际合成过，可以用，大家参考-Opencore of the IP Core, there is a practical synthesis that we could use, we refer to see

一个用VHDL语言编写的双端口存储器程序，可下载在FPGA中使用-Written in VHDL language using a dual-port memory program can be downloaded in the FPGA using

a sequence generator

FPGA实现增量式光栅尺正交脉冲解码，基于Verilog(FPGA realization of incremental grating ruler orthogonal pulse decoding, based on Verilog)

使用verilog语言编写的异步串口模块，带有16级深的FIFO，它与DSP28335的SCI相似，可以帮助初学者更快地理解FPGA和DSP的硬件结构和编程思路(Use verilog language of asynchronous serial port module, FIFO with deep level 16, it was similar with DSP28335 SCI, can help beginners to understand faster the FPGA and DSP hardware structure and programming ideas)

vhdl programming from beginner level

K2FPGA开发板实验教程——I2C协议说明及verilog实现读写I2C器件，中文内涵代码，验证可用。(K2FPGA development board test tutorial- I2C protocol description and verilog read and write I2C devices, Chinese connotation code to verify availability.)

《Verilog HDL 程序设计教程》4-"Verilog HDL Design Guide" 4