Verilog ADPLL文件与测试

在利用FPGA的并行处理能力应对高速数据和去做复杂的数据处理时，对一些较为复杂或者重复性工作模块多的情况下，算法资源就需要进行预评估。有效的资源预评估不仅可以在芯片选型上有益，还可以对程序有较详细的估计，在硬件不变的前提下能够选择更好的算法优化。本文着重在Harris算法在FPGA的实现以及在移植之前对其占用的FPGA资源进行预评估。(Response to high-speed data and do complex data processing in the FPGA parallel processing capabilities, to cope with some of the more complex or repetitive tasks module，it is necessary to pre-assessment algorithm resources. Resources pre-assessment can not only be useful in the chip selection, but also be a more detailed estimate of the program to be able to choose a better algorithm optimization in the same premise hardware. This article focuses on the pre-assessment in the Harris algorithm in the FPGA implementation and its FPGA resources occupied prior to transplantation.)

本程序实现数字钟系统，有整点报时功能，可显示切换年月日，定时功能(Digital clock system of this program, with the whole point timekeeping function, can display the date, the timing function)

用Verilog实现的 哈佛结构的简单指令集CPU程序，由ALU、地址译码器、指令译码器等部分组成(Part of a simple instruction Verilog realize the Harvard architecture CPU program set by the ALU, address decoder, an instruction decoder, etc.)

VGA彩条信号显示控制电路设计,能通过vga显示横条纹竖条纹棋盘条纹(VGA color signal display control circuit design)

FPGA程序,使用Verilog语言生成1个脉冲可调的PPS脉冲信号。(FPGA program generates 1 PPS pulse signal, using Verilog language.)

基于FPGA的正弦脉宽调制波vhdl代码，同时输出正弦波与SPWM(Sine pulse width modulation wave VHDL code based on FPGA, at the same time with SPWM output sine wave)

Verilog HDL 写的SVPWM 算法的实现，使用的是altera 风暴系列的FPGA，占用资源1w+逻辑宏单元(Verilog HDL ，SVPWM)

说明：  C8051F的一个特点就是可以倍频到100M。近来用到。在单片机的调试通过其PLL倍频函数。供用到的朋友参考和借鉴。(One feature is the ability C8051F multiplier to 100M. Recently used. In MCU debugging functions through its PLL multiplier. Used for reference for a friend.)

半带滤波器verilog源代码，主要用于采样率变换系统中，采用乘法积累加器，很好的例子，供大家参考(Half band filter verilog code, mainly for the sampling rate conversion system, use the multiplication accumulation adder, a good example, for your reference)

采用VHDL编写的一个简单的UART-using VHDL prepared a simple UART