sin and cos with cordic VHDL

de2_clock on altera de2 board

对数计算源程序，能够在FPGA中计算某数的对数(Determined on the basis of the source, calculated in the FPGA to a certain number of log)

以太网的FPGA程序实现以太网的FPGA程序实现以太网的FPGA程序实现(enternet verilog fpga)

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.)

isa总线接口，可以实现与isa总线　的IO和MEMERY接口(isa bus interface can be achieved with the isa bus IO interfaces and MEMERY)

说明：  潘松那本书上用vhdl语言描述的16位并入并处加法器(Pan book vhdl language used to describe the 16-bit adder into his)

说明：  本代码是控制DS1302的VHDL代码，浅显易懂，方便修改，注意看data sheet，保证时钟和各个延迟满足要求即可(This code is to control the DS1302' s VHDL code, easy to understand, easy changes, note the data sheet, ensure the clock and can meet the requirements of the various delays)

说明：  Verilog实现液晶1602显示,学习使用(Verilog LCD1602)

移位乘法器的输入为两个4位操作数a和b，启动乘法器由stb控制，clk信号提供系统定时。乘法器的结果为8位信号result,乘法结束后置信号done为1. 乘法算法采用原码移位乘法，即对两个操作数进行逐位的移位相加，迭代4次后输出结果。具体算法： 1. 被乘数和乘数的高位补0，扩展成8位。 2. 乘法依次向右移位，并检查其最低位，如果为1，则将被乘数和部分和相加，然后将被乘数向左移位；如果为0，则仅仅将被乘数向左移位。移位时，被乘数的低端和乘数的高端均移入0. 3. 当乘数变成全0后，乘法结束。 -err

64QAM调制,采用硬件语言verilog实现,其中调用了DDS的IP核(64QAM modulation, using language verilog hardware implementation, which is called the IP core of the DDS)