固定的点复杂 FFT

利用FPGA实现与powerpc的localbus数据接口代码。用verilog实现(localbus interface with PowerPC using Verilog)

ad9850函数发生器 MSP430单片机驱动程序 扫频 DDS(AD9850 DDS)

使用LPM_ROM的实际的例子-Use of practical examples LPM_ROM

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.)

VHDL语言实现PWM信号，非常方便的使用-VHDL language realize PWM signal, very convenient to use

忆阻器的PSPICE仿真，是忆阻器的宏模型，适合于cadence16.5版本(memristor PSPICE simulation)

ACO-OFDM sdakldjas seuekdsjakdnskd

USB 1.1 PHY的代码，systemc语言 USB 1.1 PHY的代码，systemc语言,包括基于systemc语言的testbench ，和相关的doc文档-USB 1.1 PHY code systemc language USB 1.1 PHY code, systemc languages, including systemc based testbench language, doc and related documents

编程规范是重中之重，带你书写良好的变成习惯(It is used to measure noise and detect road noise pollution. It is accurate and has good effect.)

Spartan 3 Digilent Demo:This demo drives the perphrials on the Spartan 3 board. This drives a simple pattern to the VGA port, connects the switches to the LEDs, buttons to each anode of the seven segment decoder. The seven segment decoder has a simple counter running on it, and when SW0 is in the up position the seven segment decoder will display scan codes from the PS2 port. This demo how ever does not drive the RS-232 port or the memory. This is a simple design done entirely VHDL not microblaze.