平板电视嵌入式系统中BootLoader的设计与实现

本文介绍了嵌入式系统中的引导装载程序——BootLoader的基本概念、主要操作模式及框架结构,在分析平板电视系统的地址映射方法后,结合PixelWorks的PW364解决方案,具体设计并实现了利用BootLoader来引导装载内核的过程。     

U-boot的启动流程分析

分绍了嵌入式系统中的一个源码开放的BootLoader——U-boot。并结合工作机理，对U—boot的运行代码进行深入分析，详细介绍了其初始化过程及其对操作系统的引导过程。     

S3C44B0X的BootLoader技术分析

分析了基于ARM技术的S3C44B0X芯片的BootLoader技术,研究了32位可编程芯片的系统自举及优化重组,提出了嵌入式系统的开发模式.     

基于Windows CE的BootLoader架构设计与移植

BootLoader作为嵌入式系统设计关键性的步骤,在嵌入式系统设计中起着举足轻重的作用。针对微软嵌入式操作系统Windows CE的Bootloader设计,介绍了Eboot的软件整体架构和各模块的功能,分析了Eboot源代码级的启动运行流程;在此基础上,分析将Eboot成功移植到嵌入式系统所要做的工作和详细步骤;总结了移植过程中的难点和要注意的几个问题。     

Cable Modem中BootLoader的设计与实现

着重介绍了Cable Modem系统中BootLoader的基本功能及具体实现方案.BootLoader是系统开机后最先被执行的一小段程序,其代码由汇编语言和C语言组成,起着引导的功能,它对一些必要的硬件设备进行了初始化,并负责引导起可执行映像(Image).在本系统中设计的BootLoader,加入了独特的解压缩功能,负责解压缩可执行Image.通过对BootLoader的程序流程及部分源代码的分析,介绍了开发BootLoader的具体过程,从而对Bootloader有更深刻的理解.     

基于ARM平台和NAND flash启动技术的u-boot移植过程浅析

BootLoader移植是嵌入式系统开发中一个非常重要工作环节。本文着重分析了u-boot的启动过程和NAND flash在u-boot中的读写实现,并给出了在u-boot的移植中实现NAND flash启动的相关思路及具体方法。     

基于ARM的交叉编译工具的制作

交叉编译就是在一个平台生成可以在另一个平台执行的代码,它作为嵌入式系统开发的前提和准备,具有相当重要的作用.文章利用Cosstool脚本工具集,详细说明了基于ARM和Linux的嵌入式系统的交叉编译环境的建立方法,并给出了具体的步骤.实验结果表明,可以在x86平台编译调试ARM平台上运行的程序.     

嵌入式s3c2410下MiniGUI移植与实现

当前嵌入式系统被广泛应用于工业领域和家用领域,且随着嵌入式系统的不断发展,用户对嵌入式系统的要求也越来越高,因此实现与用户交流功能的嵌入式GUI成为嵌入式研究领域中的一个重点。该文详细描述了MiniGUI系统基于s3c2410开发板的移植与实现,内容包括交叉编译环境的建立、MiniGUI编译选项的配置和修改、启动项参数的设置以及交叉编译MiniGUI应用程序等。     

基于Zynq平台的Android操作系统移植

为了解决Zynq-7000在无操作系统情况下Processing System部分开发困难的问题,研究并给出了Android操作系统在Zynq-7000 All Programmable So C平台上移植的具体方法。通过安装交叉编译器、移植BootLoader引导程序、配置和编译Linux内核、编译Android源码、生成Android文件系统和镜像文件等步骤,完成了Android系统的移植工作。将Android系统在Zynq-7000平台启动所需要的文件拷贝到SD卡中并进行系统启动,实验结果表明Android系统移植成功,这可以使得Zynq-7000平台的开发与使用更加广泛。     

基于LPC2104的μC/OS-II引导装载系统的设计与实现

在嵌入式系统设计中,针对嵌入式处理器和操作系统的引导装载系统代码的设计是一个重点.根据LPC2104的硬件结构,给出在基于μC/OS-II操作系统的嵌入式应用中,BootLoader程序的设计流程,编写了启动代码,整个方案有较大的灵活性和实用性.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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