vhdl,双向移位寄存器，实现置数，左移及右移操作

SD卡读写源代码.用Verilog编写.很不错.值得借鉴.特别对SD卡开发的人员!(SD card reader-writer source code. Prepared to use Verilog. Is pretty good. Be used for reference. In particular, the development of personnel SD card!)

just division the clock into 2

已经正式出版，西安电子科技大学出版社，FPGA设计及应用，作者褚振勇(Has been officially published, Xi' an University of Electronic Science and Technology Publishing House, FPGA design and application, the author Zhezhengyong)

1、用状态机设计A/D转换器ADC0809的采样控制电路，并在数码管上显示转换结果； 2、设置有复位和启动/保持开关，要求 ⑴ 复位开关用来使A/D转换器复位，并做好A/D转换准备； ⑵ 启动/保持开关用来控制A/D转换器开始连续转换或停止转换保持结果，即按一下启动/保持开关，启动A/D转换器开始转换，再按一下启/停开关，停止转换并保持结果。 3、采用Verilog HDL语言设计符合上述功能要求的控制电路。(1, with the state machine design A/D converter ADC0809 sampling control circuit and display the results on the digital conversion 2 is provided with a reset and start/hold switch, reset switch is used to make the request ⑴ A/D converter reset and do A/D conversion ready ⑵ start/hold switch is used to control the A/D converter starts converting or stop the conversion to maintain a continuous result that by clicking Start/hold switch, start the A/D converter to start the conversion, and then Click the start/stop switch stops the conversion and keep the results. 3, using Verilog HDL language designed to meet the functional requirements of the above-mentioned control circuit.)

LOW pass FIR filter for multirate processing

VHDL Vendingmachine source

利用FPGA来采集美新加速度计的数据，并将FPGA采集到的数据传给ARM系统处理-The use of FPGA to collect the new U.S. accelerometer data and the data collected FPGA passed ARM system processing

EV10AQ190A配置程序 EV10AQ190A configuration program(EV10AQ190A configuration program)

说明：  掌握SDRAM数据读写、刷新、初始化以及FPGA串口收发时序，熟练FIFO IP核的生成和调用。(Master SDRAM data read and write, refresh, initialization and the timing of sending and receiving of the serial port of the FPGA, skilled in the generation and invocation of the FIFO IP core.)

dpim是光通信中使用的一种调制方式，这里提供的是它的环回代码，自己可以根据需要拆开了下载到两块板子上。(dpim is used in an optical modulation, here is its loop-back code, they can download needed two apart on the board.)