This code helps us to interface ARM with external memory

44b0启动代码 本项目在ADS1.2下编译,在SDT2.51的ADW中调试。编译时，请将整个44b0xbios目录拷贝到c:下-44b0 boot code of the item under the ADS1.2 compiler, in the ADW SDT2.51 tuning. Compile time, I would be grateful if the entire 44b0xbios copy of the directory c : under

AD转换器ADC0809与MCS-51单片机的应用 C语言程序-AD converter ADC0809 and the application of MCS-51 Microcontroller C Programming Language

ST arm board PLL TEST CODE

资源描述 资源描述 资源描述 STM32F10x系列驱动0.96OLED（SSD1106）显示屏（软件模拟SPI通信），亲测可用 功能描述   :OLED 4接口演示例程(STM32系列) //              说明:  //              ---------------------------------------------------------------- //              GND    电源地 //              VCC  接5V或3.3v电源 //              D0   接PB10（SCL） //              D1   接PB11（SDA） //              RES  接PB12 //              DC   接PB13 //              CS   接PB14               //      

3000TB51配套实验例程 1八段数码管显示实验 等-Experimental routine 3000TB51 matching one eight digital tube display experiments

CS5460A读取程序keil C51 -CS5460A reader keil C51

这是一个不到2000行的操作系统，巧妙地利用ARM9 CPU的内存管理单元(MMU)实现进程的切换。ARM9的4G虚拟地址可分成128个进程空间，每个32M。虽然它们的虚拟地址(VA)都是0-(32M-1)，但是对应的MVA(Modified vitual address,由虚拟地址VA和进程号PID组合而来)不一样，设置MVA对应的页表指向不同物理地址就可以很方便地让各进程运行空间相互隔开。代码很少，注释丰富，希望能对想理解操作系统、了解ARM体系结构的朋友有所帮助。 -This is a trip of less than 2000 operating system, cleverly using ARM9 CPU memory management unit (MMU) to achieve the switching process. ARM9 4G virtual address can be divided into 128 process space, each 32M. While their virtual address (VA) are 0- (32M-1), but the corresponding MVA (Modified Virtual address, and by the virtual address VA and the process of portfolio from PID) not the same, set MVA corresponding page table at the different physical address can be very easy to let the the process of separating the mutual operation of space. Code rarely Notes rich, in hopes of understanding the operating system, understanding the ARM architecture friends help.

philips的ARM芯片资料，很NB的，比NBA都NB，不错，你下来-Philips ARM chip, the very NB, NB NBA, it is true that you see down

连接到SPI总线的键盘驱动程序，适用于atmel公司的rm9200开发平台，使用ADS工具编写的-connected to the keyboard SPI bus drivers, applicable to the ATMEL rm9200 development platform, the use of tools to prepare the ADS

凌阳的61单片机 制作的公交车报站器，含有原理图 操作源代码和制作说明，配套资料。