包括各种类型存储器的VHDL描述，如FIFO，双口RAM等

VHDL Programmes -2 for dumping on FPGA

xilinx 开发板程序，VGA控制显示-Xilinx development board procedures, VGA display control

说明：  直接数字式频率合成器DDS设计、Verilog。 产生的信号可以是正弦波或方波、三角波、锯齿波等，自选。 采用DDS技术，将所需生成的波形写入ROM中，按照相位累加原理合成任意波形。 此方案得到的波形稳定，精度高，产生波形频率范围大，容易产生高频。 本实验在设计的模块中，包含以下功能： （1）通过 freq 信号输入需要的频率的值； （2）通过 wave_sel 信号选择所需的波形； （3）通过 amp_adj 信号选择波形放大的倍数。(DDS design of direct digital frequency synthesizer, Verilog. The generated signal can be sinusoidal or square wave, triangular wave, sawtooth wave and so on, optional. By using DDS technology, the required waveforms are written into ROM, and arbitrary waveforms are synthesized according to the principle of phase accumulation. The waveform obtained by this scheme is stable, accurate and easy to generate high frequency waveform. This experiment includes the following functions in the designed module: (1) Input the required frequency value through freq signal; (2) Choosing the required waveform by wave_sel signal; (3) Select the multiplier of waveform amplification by amp_adj signal.)

this a fpga sparttan 3e based project in which i have made a game based on vga interface . this file is the supporting file for keyboard interface and it also included a intro.vhdl file required for the startup animation file.-this is a fpga sparttan 3e based project in which i have made a game based on vga interface . this file is the supporting file for keyboard interface and it also included a intro.vhdl file required for the startup animation file.

A quick and simple Spartan 3 tutorial

wimax ofdm系统评估代码 wimax ofdm system code 很有参考价值(wimax ofdm system code)

QPSK调制，QPSK仿真误码率,QPSK理论误码率 , QPSK仿真误比特率 , QPSK理论误比特率 (QPSK modulation, the signal-to-noise ratio)

说明：  此代码是由FPGA产生SPWM波的代码，简单易懂(use FPGA to generate SPWM)

sdh帧同步，实现sdh帧搜索，预同步，同步，保护等各态的功能(SDH frame synchronization SDH frame search, pre-sync, synchronization, protection, the function of each state)

6通道正弦波发生器，产生频率，相位，幅值都可调的正弦波形-6-channel sine wave generator, resulting in frequency, phase, amplitude of the sinusoidal waveform are adjustable