我是VHDL的初学者，这是我自己编译的简单的几个VHDL码，功能有3...

RS（255，223）编码器，已实际运用到产品中(RS (255,223) encoder has actually applied to products)

适用于Altera FPGA Nios II平台uClinux OpenCV之BmpDecoder的源码(Souce code of BmpDecoder for Altera FPGA Nios II uClinux OpenCV)

UMC 90nm design kit. please read before using thee models.

状态机的性能考察.rar 状态机的性能考察.rar-Study the performance of state machine. Rar inspect the performance of state machine. Rar

使用STM32官方提供的DSP库进行FFT，虽然在使用上有些不灵活（因为它是基4的FFT，所以FFT的点数必须是4^n），但其执行效率确实非常高效，看图1所示的FFT运算效率测试数据便可见一斑。该数据来自STM32 DSP库使用文档(. Using the official DSP library provided by STM32 for FFT is not flexible in use (because it is the FFT of base 4, so the number of FFT points must be 4 ^ n), but its execution efficiency is really very efficient, as can be seen from the test data of FFT operation efficiency shown in Figure 1. This data comes from STM32 DSP library usage document)

该代码为VHDL语言描述的AD579 SPI通讯程序，包括一些代码注解。(Thisis a SPI communication promgram of AD5791 designed with VHDL which compared with some discreption.)

本源码为Nios II的开发示例,主要演示Nios II的定时中断器的应用。开发环境QuartusII。 本示例十分经典，对基于SOPC开发的FPGA初学者有很大帮助。-The source code for the Nios II development of an example, the main demonstration Nios II interrupt timing device applications. Development environment QuartusII. This example is very classic, FPGA-based SOPC development of great help for beginners.

quartus license dede(quartus 11.0 license)

OPSK调制解调。代码思路很清晰，也很干净(Modulation demodulation OPSK. The code ideas very clear, and very clean)

说明：  基于FPGA的OFDM同步，包含时钟模块、ROM读取模块、峰值检测模块、帧同步模块(OFDM synchronization based on FPGA includes clock module, Rom reading module, peak detection module and frame synchronization module)