arm通用启动程序，本课题硬件上采用了Intel Xscale系列的PXA255作为处理器，Xscale核心是与ARM V5TE构架兼容的，因此具有一定的代表性，并以此来搭建课题的硬件实践平台，软件上以Linux作为操作系统。而在具体的实现上目标是除了实现bootloader的基本功能外，还将它实现成一个更加复杂的系统，即增加对硬件电路板的支持，以方便开发人员进行调试以及开发。因此，本文重点阐述了实践上具体的设计，具体的实现以及简单评估了它的作用。最后，对实现的bootloader进行了扩展：即在阐明ARM嵌入式系统中bootloader的一些共同点之后，介绍了如何对其他ARM系统进行移植，以做到通用性。
arm universe bootloade very detail document:
reset：
b coldstart
b undefined_instruction
b software_interrupt
b abort_prefetch
b abort_data
b not_used
b interrupt_request
b fast_interrupt_request
(2011-08-23, Asm, 353KB, 下载3次)
1．试编写程序：INT0外部中断。P1口接8个LED，4个为一组，交替亮灭，当INT0出现低脉冲，响应中断，显示流水灯效果。
2．试编写程序：T0计数中断。P1口接8个LED，4个为一组，交替亮灭，当T0计数3次，响应中断，显示流水灯效果。
3．试编写程序： T0定时中断。P1口接8个LED，4个为一组，交替亮灭，当T0定时器定时3秒中断，显示流水灯效果。
1. Test preparation programs: INT0 external interrupt. P1 port connected 8 LED, 4 in groups, alternating light off, when the INT0 low pulse occurs, the response disruption, showing water light effects. 2. Test preparation programs: T0 counter interrupt. P1 port connected 8 LED, 4 in groups, alternating light off, when the count of 3 times T0, response interruption, water light show effects. 3. Test preparation programs: T0 timer interrupt. P1 port connected 8 LED, 4 in groups, alternating light off, 3 seconds when the T0 timer interrupt timer, display light water effects. (2011-05-02, Asm, 12KB, 下载7次)
51微控制器的P1口是一个准双向口，作通用的I/O口使用，就是将P1口分别作为输入和输出进行练习。
作输入时，把开关作为输入装置，由P1口读取开关状态。作输出时，控制LED发光二极管。
P1 51 microcontroller is a quasi-bidirectional port for general I/O port to use, the experiment is to P1, respectively, as input and output ports to practice. As input, the switch as an input device, read the switch status from the P1 port. For output, the control LED light-emitting diodes. (2011-05-02, Asm, 11KB, 下载3次)
微控制器具有较强的加、减、乘、除等数学运算功能，这些运算可直接对8位无符号二进制数进行运算。利用溢出标志，还可以把加、减法运算用于有符号数的运算；用十进制调整指令，又可使加法运算直接用十进制（BCD码）来进行。
Micro-controller has strong add, subtract, multiply, divide and other math functions, these operations can be directly on the 8-bit unsigned binary number for calculation. Using overflow flag, but also can add, subtract the number of operations for signed decimal adjust instruction, but also make direct use of the decimal addition operation (BCD code) to carry out. (2011-05-02, Asm, 11KB, 下载3次)
DAvE是英飞凌科技公司的电子芯片模拟开发应用工具软件。
戴夫会帮助你在你的项目中规划你想使用的英飞凌单片机或dsp,以提供智能向导,那帮你设定芯片来工作的方式和你需要的各功能模块,自动生成C-code驱动功能与适当的单片外围设备和中断的控制。
DAvE会直接与编译器的IDE互动。
DAvE is the Digital Application Engineer from Infineon Technologies.
DAvE will...
- Help you program the Infineon microcontroller you want to use in your project, by offering intelligent wizards, that help you configure the chip to work the way you need it and automatically generate C-code with appropriate driver functions for all of the on-chip peripherals and interrupt controls.
- Interact directly with compiler IDE s.
To use DAvE you need the DAvE mother system and the DIP file for your specific microcontroller. After installation of the mother system you need to install the DIP file. For this purpose please start DAvE. Goto "View", "Setup Wizard". Select "Installation".
Please note: If you run DAvE on Windows Vista,
then please start the program the following way:
Right click with your mouse onto dave.exe. Then choose "Run as administrator". (2009-09-23, Asm, 13133KB, 下载136次)
1.该产品是一个民用高速脱水机，机器最大容量为5公斤。
2.全自动波轮洗衣机的脱水转速为：8000-1000rpm。当脱水转速到达3200rpm时，化纤类衣物在夏天几乎可以直接穿了——非常干了。
3.该产品原来是德国的，他们采用交流感应电动机，我们无法实现——因为没有解决刹车的问题。高速下刹车的解决需要好的材料选择以及精确的设计。BLDC的刹车就好办了。
4.我的设计非常精简——1片MEGA48，6只75NF75，1只20A的桥——详细见电子元器件清单，成本只有不足30元。
5.请务必采用环形变压器！因为借助它的压降来分析的
6.同时提供的PCB以及电子元器件清单都是真实的，可以直接用（PCB上低端驱动中的一个三极管需要改为PNP！）
1. The product is a commercial high-speed dehydration machine, the machine maximum capacity of 5 kg.
2. Automatic Washing Machine for the dehydration speed :8000-1000rpm. When the dehydration speed reaches 3200rpm, the chemical fiber clothing to wear in the summer is almost directly- and very dry.
3. The product was originally German, and they use AC induction motor, we are unable to achieve- because there is no brake to solve the problem. High speed brakes to resolve the need for good material selection and precision design. BLDC brake on the easier to handle.
4. My design is very streamlined- 1 Pian MEGA48, 6 Zhi 75NF75, 1 Zhi 20A of the bridge- see detailed list of electronic components, costs less than 30 yuan.
5. Please be sure to use ring transformer! Because through it, the pressure drop to the analysis of
6. Also provides a list of PCB and electronic components are real and can be directly (PCB on the low-side driver transistor need to be changed in a PNP!) (2009-09-17, Asm, 350KB, 下载183次)
时钟程序,大家是否想到用定时器，对，也可用定时器的中断来处理，这样的程序我想不用我说了吧！
你们可自己发辉下，本程序采用外元件DS1302时钟IC，使用此IC不增加系统资源，要时钟时直接去读取就可以了
本IC跟ADC0831一样以串口方式传送数据，不同的是协议，只要你读懂它的串口协议，就可以用P口来模拟协议进行
，这样更能使你对传送数据协议的了解
Clock process, whether you think using the timer, right, can also be used to handle the timer interrupt, so that the procedures I do not think so I said it! Fa-Hui you can own, this program outside the components using DS1302 clock IC, the IC not to increase the use of system resources, it is necessary to read the clock directly to the IC will be the same as with the ADC0831 to serial transmission of data, difference is that the agreement , as long as you read its serial protocol, it can be used to simulate P agreement mouth, so that you can send more data to understand the agreement (2009-07-05, Asm, 8KB, 下载9次)
S3C2440 LED 程序，用ADS1.2编译,通过仿真器可以直接用，只有SETP调试才能看到结果，修改其内容可用来测试硬件。
S3C2440 LED program ADS1.2 compiled through the simulator can be directly used, only to see the results of SETP debug, modify its content can be used to test hardware. (2008-04-30, Asm, 8KB, 下载33次)