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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...
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.
- 2023-01-15 10:50:03下载
- 积分：1
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S3C2410上RS485驱动源码,用ADS1.2编译工程,已测试通过.内附文档.
S3C2410上RS485驱动源码,用ADS1.2编译工程,已测试通过.内附文档.-S3C2410 on the RS485 driver source code, using ADS1.2 compiler works, have been tested. Containing document.
- 2022-04-14 19:53:07下载
- 积分：1
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Digital electron clock
Fixed time
基于51单片机的数字电子钟调时+定时程序-Digital electron clock
Fixed time
- 2023-04-16 23:15:03下载
- 积分：1
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三星S3C2440 LED控制器驱动程序
三星S3C2440 LED控制器驱动程序-Samsung S3C2440 LED controller driver
- 2023-01-29 05:30:03下载
- 积分：1
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很不错的STM32F10xxx_Library_Manual_V2，STM库的中文版，值得好好收藏！！支持下...
很不错的STM32F10xxx_Library_Manual_V2，STM库的中文版，值得好好收藏！！支持下-Very good STM32F10xxx_Library_Manual_V2, STM library of the Chinese version, it is a good collection! ! Support
- 2022-03-16 11:42:50下载
- 积分：1
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AT91RM调试手册.pdf , ARM AT91芯片调试手册。
AT91RM调试手册.pdf , ARM AT91芯片调试手册。-AT91RM调试手册.pdf ， ARM at91 chip set debug list.
- 2023-04-20 02:20:02下载
- 积分：1
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arm架构的说明，比较详细的一个文档
arm架构的说明，比较详细的一个文档-arm structure of the note, a more detailed document
- 2022-05-18 10:36:39下载
- 积分：1
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三星arm 4510 bootloader的实现与分析
三星arm 4510 bootloader的实现与分析-Samsung realize the arm 4510 bootloader and Analysis
- 2023-08-29 22:50:03下载
- 积分：1
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jflash烧写工具（270）用vc编译只需要一根jflash线利用此软件就可对flash进行擦写...
jflash烧写工具（270）用vc编译只需要一根jflash线利用此软件就可对flash进行擦写-jflash Shaoxie Tools (270) with vc compiler requires only a jflash line use this software to be flash to erase
- 2022-01-25 23:10:44下载
- 积分：1
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A friendly arm on the circuit schematic and library file, I believe all of you t...
友善之臂电路原理图和库文件，相信对大家开发2440有很大帮组-A friendly arm on the circuit schematic and library file, I believe all of you to help develop a great group of 2440
- 2022-05-08 06:06:20下载
- 积分：1
