FPGA realize for a good vga display routines, vhdl language.

基于FPGA器件的DDS设计实现中的一个核心部分就是波形存储表的设计。首先采用LPM_ROM和 VHDL选择语句这两种方法进行波形存储表的设计和比较分析 然后考虑到硬件资源的有限性及DDS的精度要 求,对这两种方法的程序进行了优化 最后对这两种方法设计的程序进行仿真和硬件调试。结果表明:采用这两种 方法都能有效地实现DDS中波形存储表的设计。 (DDS-based FPGA devices designed to achieve one of the core of the waveform is stored in table design. First of all, choose to adopt LPM_ROM and VHDL statements of these two methods for the design waveform storage tables and comparative analysis and then, taking into account the limited hardware resources and the accuracy of DDS, the two methods to optimize the process the last of these two methods of process design simulation and hardware debugging. The results showed that: the use of these two methods are all effective ways to achieve the DDS waveform stored in the table design.)

code for fft non synthesisable in xilinx ise

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acousting fingerprint enhancement

异步的fifo,写时钟和读时钟相互独立，能够对数据进行缓存处理。希望对大家有用(Asynchronous fifo, write clock and the read clock independent of each other, capable of processing the data cache. I hope useful)

在Altera芯片2C35F672平台上的FFT程序，采用DSPBuilder5.0，生成Verilog文件。开发环境：QuartusII5.0。-In the Altera chip 2C35F672 platform FFT procedures DSPBuilder5.0, generated Verilog file. Development Environment: QuartusII5.0.

步进电机驱动，32等级速度，带加减速度控制。verilog编写。(step motor driver,32 level speed.)

通过编写verilog语言完成数据的在液晶LCD1602显示(By writing verilog language to complete the data displayed on the LCD LCD1602)

FIFO的Verilog程序 已在modelsim中编译通过 并且可以通过DC进行综合-FIFO procedures have been in the Verilog in ModelSim compiler and can be passed through the integrated DC

部分组合逻辑数字电路的VHDL代码，包含必要的功能描述(Some combinational logic digital circuits VHDL code, containing the necessary functional description)