simple code based on verilog shifter , cla ,clg , ALU ,PC, decoder , tb_top

说明：  快速冒泡排序基于FPGA实现，有测试文件以及设计图，实现1024*32位数序的多数排序，突破传统是的REG类型少数排序，利用RAM，针对RAM中的无序数的地址调换，达到排序目的，仅供学习交流(Rapid bubble sort based on FPGA, there are test documents and design drawings to achieve 1024* 32-digit sequence of the majority of sorting, breaking tradition is a REG types of minority sorting, the use of RAM, the disorder for the RAM address of the number of exchange, to sort purpose, only to learn the exchange of.)

一个LED大屏幕接收卡的完整设计工程,有需要学习LED大屏幕控制的朋友可以参考

8251的完整的功能的实现,可以进行编译,综合.-8251 complete function of the realization can be compiled and integrated.

快速实现HDB3码与普通码二进制码的转换，方便学习与了解HDB3码的转换(Quickly achieve HDB3 code and common code binary code conversion, facilitate learning and understanding HDB3 code conversion)

数控分频器的设计 数控分频器的功能就是当在输入端给定不同输入数据时，将对输入的时钟信号有不同的分频比，例3的数控分频器就是用计数值可并行预置的加法计数器设计完成的，方法是将计数溢出位与预置数加载输入信号相接即可。(NC NC divider divider design of its function is when the input given different input data, input the clock signal will have different frequency than, for example 3 is to use the NC prescaler count preset value of the adder parallel counter design is completed, the method is to count the number of overflow bit with preset load to the input signal phase.)

由8 位加法器构成的以时序方式设计的8 位乘法器，采用逐项移位相加的方 法来实现相乘的VHDL程序代码。包含几个小模块和一个顶层设计文件，运行可用。(an 8 bit multiplier combined with 8 bit adder using a design by way of timing,and it use a way of Itemized shift to implement the multiply.It include some little module and a top level design document.)

出租车自动计费系统的verilog程序代码(Taxi automated billing system verilog code)

一个以太网卡的硬件描述，可以参考进行设计网卡芯片。-an Ethernet card hardware description, reference card chip design.

modelsim的一个非常好的教程，有程序源码，PPT，word教程-ModelSim