alpha 处理器的 RTL实现

说明：  USB主机和设备的verilog代码，实现了USB1.1协议规范的要求(USB host and equipment Verilog code to achieve the USB 1.1 protocol specification requirements)

说明：  华为 Verilog基本电路设计指导书--本文列举了大量的基本电路的Verilog HDL 代码，使初学者能够迅速熟悉基本的HDL 建模；同时也列举了一些常用电路的代码(Huawei Verilog basic circuit design instruction)

it is a filter contract VHDL .(it is a filter contract VHDL.)

小波包分解，重构轴承振动信号，Hilbert包络，FFT进行频谱分析，以获得轴承故障频率。(Wavelet packet decomposition, reconstruction of bearing vibration signal, Hilbert envelope, FFT spectrum analysis to obtain the bearing fault frequencies.)

Nexys-4-DDR-XADC 开发板demo(Nexys-4-DDR-XADC e.v. Board demo)

Dualport Ram access read and write

32-bit Wishbone Interface • DMA • Buffer Descriptor • Compliant with SD Host Controller Spec version 2.0 • Support SD 4-bit mode • Interrupt-on-completion of Data and Command transmission • Write/Read FIFO with variable size • Internal implementation of CRC16 for data lines and CRC7 for command line Wishbine 总线使用。完整的SD卡控制器，支持文件系统，高速传输。

标准RS422 Verilog源代码， 传输波特率可以修改， FPGA上可以工作(Standard RS422 verilog communication source code, buardrate can be updated and it is fully work in FPGA )

说明：  利用ISE编写的产生WALSH码的verilog程序，简单易懂，稍稍修改就可以产生出自己想的8 16 32 64位的WALSH码。。(Prepared using ISE verilog code generated WALSH procedures, easy to understand, a little modification can generate their own like the 8,16，32，64-bit code WALSH. .)

BCH3.c,提供m<21以下的所有码长的BCH编解码模块。以供大家参考。谢谢(BCH encoder&decoder GF(2^m) m<21)