实用的程序代码，希望对大家有用，已经调试通过

数控分频器设计:对于一个加法计数器，装载不同的计数初始值时，会有不同频率的溢出输出信号。计数器溢出时，输出‘1’电平，同时溢出时的‘1’电平反馈给计数器的输入端作为装载信号；否则输出‘0’电平。 -NC divider design : an adder counter, loading the initial count value, have different frequency output signal of the overflow. Counter overflow, the output"1 "Level, Overflow at the same time the"1 "level feedback to the counter input signal as loading; Otherwise output"0 "level.

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)

本代码是用VRILOG语言写的SDRAM的控制器的标准代码,供开发SARM参考.-this code is used to write the language VRILOG SDRAM controller standard code for the development of SARM reference.

熟悉IIC协议总线协议，采用IIC总线对图像采集传感器寄存器进行配置，并转换为RGB565格式。 利用异步FIFO完成从摄像头输出端到SDRAM 和SDRAM 到VGA 接口各跨时钟域信号的传输和处理。 利用 SDRAM 接口模块的设计，实现了刷新、读写等操作；为提高SDRAM 的读写带宽，均采用突发连续读写数据方式；并采用乒乓操作实现 CMOS 摄像头与VGA的帧率匹配。 利用双线性插值方法实现对图像640×480到1024×768的放大操作。 完成VGA显示接口设计。(Familiar with IIC protocol bus protocol, IIC bus is used to configure the register of image acquisition sensor and convert it into RGB565 format. Asynchronous FIFO is used to transmit and process signals across clock domain from camera output to SDRAM and SDRAM to VGA interface. With the design of SDRAM interface module, refresh, read and write operations are realized. In order to improve the read and write bandwidth of SDRAM, burst continuous read and write data mode is adopted, and table tennis operation is used to achieve frame rate matching between CMOS camera and VGA. The bilinear interpolation method is used to enlarge the image from 640*480 to 1024*768. Complete the VGA display interface design.)

异步的fifo,写时钟和读时钟相互独立，能够对数据进行缓存处理。希望对大家有用(Asynchronous fifo, write clock and the read clock independent of each other, capable of processing the data cache. I hope useful)

该源代码是RS（31，19）码的完整编译码程序，采用的是VerilogHDL语言，包含了RS码的编码和译码，这蛋疼的东西花费好多时间(The source code is RS (31,19) code complete encoding and decoding procedures, and spend a lot of time using is VerilogHDL language contains the encoding and decoding of RS codes, this egg pain)

VHDL语言编写的计数器程序，实现1到9999计数，并动态扫描显示，带清零和暂停功能，课上作业自编程序-VHDL language of the counter program to achieve 1-9999 counts, and the dynamic scan showed, with Clear and suspension of functions, classes, on a self-compiled programs

vga显示代码,里面有ise工程文件,是直接调过去的,大家下载下来吧-vga display code, which has ise project file is transferred directly past, everyone download it

Counter written in VHDL.

基于ＦＰＧＡ实现移位乘法功能，已经验证，十分好用。-FPGA-based multiplication realize shift function, has been verified, is very easy to use.