两个加法器和乘法器与并行处理的使用…

vhdl测试程序，用于初雪者熟悉hdl的具体语法应用。比较简单了。(VHDL test procedure for the First Snow hdl who are familiar with the application of specific syntax. A relatively simple.)

QuartusII简介手册+中文版 本手册针对的读者是 Quartus II 软件的初学者，它概述了可编程逻辑设计中 Quartus II 软件的功能。 不过，本手册并不是 Quartus II 软件的详尽参考手 册。 相反，本手册只是一本指导书，它解释软件的功能以及显示这些功能如 何帮助您进行 FPGA 和 CPLD 设计。-QuartusII brochure+ Chinese version of the manual is aimed at readers of Quartus II software for beginners, it provides an overview of programmable logic design in Quartus II software. However, this manual is not the Quartus II software, a detailed reference manual. Instead, this manual is a guide book, which explained the functions of the software and show how these features help you to FPGA and CPLD design.

用verilog实现dsp与Fpga接口的同步设计，其功能包括读写操作及四个功能模块，采用两个fifo实现不同时钟域的地址与数据的转换，在quartus ii11.0环境下运行，运行此程序之前需运行将调用fifo。(Dsp using verilog achieve synchronization with Fpga interface design, its features include read and write operations and four functional modules, using two different clock domains to achieve fifo address and data conversion in quartus ii11.0 environment to run, run this program required before running calls fifo.)

HDLC控制器源码，包括单独HDLC的Tx端和Rx端实现，以及顶层带FIFO和Wishbone总线控制器的实现，通过Wishbone可方便与CPU连接，通过软件控制整个HDLC控制器的工作。

FPGA上的VERILOG语言编程。通过查找表实现直接数字频率合成。在主控部分通过键盘选择正弦波，方波，三角波，斜波，以及四种波形的任意两种的叠加，以及四种波形的叠加；通过控制频率控制字C的大小，以控制输出波形频率，实现1Hz的微调；通过地址变换实现波形相位256级可调；通过DAC0832使波形幅值256级可调；通过FPGA内部RAM实现波形存储回放；并实现了每秒100HZ扫频。(FPGA on the verilog language programming. Lookup table through direct digital frequency synthesis. In part through the control of the keyboard to choose sine, square, triangle wave, sloping wave, and four arbitrary waveform two superposed and the stack of four waveform; by controlling the frequency control word on the size, in order to control the output waveform frequency, 1 Hz to achieve the fine-tuning; Address transform through waveform phase adjustable 256; DAC0832 so through waveform amplitude adjustable 256; FPGA through internal RAM to the waveform storage intervals; and achieve a 100 per second sweep 9999.)

直接数字频率合成器（Direct Digital Frequency Synthesizer：DDFS）的VHDL程序,开发环境是QuartusII,系统时钟为50MHz，由PLL产生DDFS的工作时钟166.67MHz,地址位宽为24位，频率字为20，相位字为10，RAM用于存储查找表，其地址位宽为10，数据位宽为8。-Direct Digital Frequency Synthesizer ( DDFS) of the VHDL program, the development environment is QuartusII, the system clock to 50MHz, the work of DDFS generated by PLL clock 166.67MHz, address bit-width of 24-bit frequency word is 20, phase word for 10, RAM used to store look-up table, its address is 10 bits wide, the data is 8 bits wide.

Building the CPU datapath

cpu与GPU协同计算一个同时支持GPU与CPU的MapReduce框架实现(cpu and GPU collaborative computing)

FPGA驱动adc9226，高精度高速度。(ad9226 by FPGA)

Verilog module containing a synthesizable CRC function // * polynomial: (0 1 8) // * data width: 8-Verilog module containing a synthesizable CRC function //* polynomial: (0 1 8) //* data width: 8