源的USB接口，以供参考，有什么问题请多指教

Windows环境下32位汇编语言程序设计配套书源码第四章-Windows Environment 32-bit assembly language programming book source package in Chapter IV

LPC2000 启动代码Start.s文件简要分析 先说一下启动代码的位置，启动代码是在板子加电后首先执行的。所以非要用汇编来写才行。 要完成处理器模式的初始化、设置中断向量表、设置各个模式下的堆栈、初始某些变量从而把 系统带到一个合适的运行环境中开始用户程序的运行。 本段设置处理器的模式相关常量

很好的东西 你们一定要相信我 让我下载 走人吧 你们做的太好了-Good thing you have to believe that I leave you let me download the good you do

keil 的简明教程 如何建立工程，编译，仿真，下载。-keil short, simple tutorial how to create projects, compiling, simulation, download.

引导扇区源代码注释，用于描述系统的引导过程-Boot sector source code annotations, used to describe the system boot process

一、 使用键盘显示接口芯片8279接收按键键值，并在七段数码管上显示出来，通过判断键值进入相应音乐播放处理程序。在音乐播放程序中，使用定时器/计数器8253的计数器2，使其工作在方式¬ ¬ 3―方波发生器，通过查表依次取出乐曲频率值送入计数器作为计数初值，经out2输出方波，驱动扬声器发出不同频率的声音，在每个音阶之间加入相应的延迟时间，即实现了音乐的播放。-First, the use of a keyboard display interface chip receive keys keys 8279, and Seven-Segment LED display, through to determine the corresponding music player keys to enter the treatment program. Procedures in the music player, use the timer/counter 2 counter 8253 to work in the way ? ? 3- square-wave generator, followed by out music through the look-up table values into the counter as a frequency count of the initial value, the output side out2 waves, driven loudspeakers of different frequency sound, in between each scale by adding the appropriate delay time, namely, the realization of the music player.

算24点”作为一种扑克牌智力游戏，游戏内容为从一副牌中抽去大小王2张，任意抽取4张牌（称牌组），用加、减、乘、除（可加括号）把牌面上的数算成24，每张牌必须用一次且只能用一次。我们可以人工计算，当然也可以用计算机来处理。本程序主要是借助计算机利用设计好的算法来计算24点问题。 该24点游戏程序内容主要包括界面显示，自动运算24点以及手动计算24点三部分，采用模块化开发方法，并汇编语言编写程序代码。-Count 24 points " as a mental poker game, a game content license from the King of removing the size 2, 4 samples of arbitrary license (a license that group), with add, subtract, multiply, divide (which can be bracketed ) to the surface of the card count as 24, each card must be used once and only once. We can manually, of course, can also be used to deal with the computer. This procedure is the use of the use of computer algorithms designed to calculate the 24 points. The 24-point games, including the contents of the main screen, automatic operation and manual calculation of 24 points, 24 points, three-part, modular development methodology, and assembly language programming code.

BCD码相乘，汇编环境里没有对压缩BCD码相乘的调整，相当于作业吧！-BCD multiply, the compilation environment where no compression BCD multiplication of adjustment, which is equivalent to operating!

球赛计时计分器程序 AT89C51汇编语言-Match time points AT89C51 assembly language program

软盘格式化程序,实现了对软盘的格式化。-the soft disk formatting,which enables the format of disk