最近组长给分配的任务，这几天一直在做，比较郁闷的是用的器件是XC400XL系列的，只有ISE4.1支持，用惯了7.1i的我还是要适应一阵子（关键4.1是一个试用...

不足20元的PCI设计，含ABEL源代码。(PCI design less than 20Yuan ,including ABEL code)

In the data management system a significant role of the Data link layer is to convert the unreliable physical link between reader and tag into a reliable link. Therefore, the RFID system employs the Cyclic Redundancy Check (CRC) as an error detection scheme. In addition for reader to communicate with the multiple tags, an anti-collision technique is required. The technique is to coordinate the communication between the reader and the tags. The common deterministic anti-collision techniques are based on the Tree algorithm such as the Binary Tree and the Query Tree algorithms.

这是执行高速的代码通用异步收发器代码是用VHDL写的语言.UART是一种在传输端进行并行输入和串行输出，在接收端进行串行输入和并行输出的算法。

verilog 代码. 经验证成功,可以作为标准单元库,为FPGA设计者使用.-Verilog code. Certified success, as a standard cell library for the use of FPGA designers.

这个是一个基于FPGA的SDRAM控制器系统，实现对SDRAM的读写操作，用来实现时序的控制-This is an FPGA-based SDRAM controller system, the read and write operations to SDRAM to achieve the control of timing

基于DE2_70平台，编写nios软核c代码，控制流水灯，硬件实现验证通过，适合入门(Based DE2_70 platform, written nios soft core c code, control water lights, verified by hardware implementation, suitable for entry)

Run-Length Encoder Example: Input Sequence (hexadecimal format): 0A, 14, 14, 14, 14, 14, 14, 14, 56, 56, 56, 56, 56, 32, 32, 07 Output Sequence (hexadecimal format): 0A, 14, 87, 56, 85, 32, 32, 07

利用电话远程系统，通过密码验证来实现对家庭电器的智能控制。-The use of long-distance telephone system, via a password to verify the implementation of the intelligent control of household electrical appliances.

设计一个简单的FIR滤波器，并按要求确定滤波器的系统函数。(Design a simple FIR filter, and determine the filter according to the requirement of system function.)

DDs直接数字频率合成器的源代码，其中包括采用IP核和普通两种方式-DDS Direct Digital Synthesizer source code, including the use of IP core and the general two ways