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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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stm32下实现adc 16通道检测代码例子,已经测试可以检测正确了
stm32下实现adc 16通道检测代码例子,已经测试可以检测正确了-adc 16 under stm32 channel detection code examples have been tested can detect the correct
- 2022-01-25 23:45:52下载
- 积分:1
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单片机lcd取模工具,很好用,不需安装,很适合人机界面用
单片机lcd取模工具,很好用,不需安装,很适合人机界面用-img2lcd
- 2022-05-24 00:00:58下载
- 积分:1
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AT91SAM7S64_debug.rar
AT91SAM7S64_debug.rar-AT91SAM7S64调试笔记-AT91SAM7S64_debug.rar-AT91SAM7S64 Debugging Notes
- 2022-01-26 03:11:41下载
- 积分:1
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ARM开发软件使用教程
ARM开发软件使用教程-ARM software directory
- 2022-03-31 08:29:12下载
- 积分:1
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Chinese data AT91SAM926 manual, looks more convenient
AT91SAM926中文数据手册,看起来比较方便-Chinese data AT91SAM926 manual, looks more convenient
- 2022-02-05 21:01:57下载
- 积分:1
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s3c2410 中 文 手 册
s3c2410 中 文 手 册-s3c2410 book of chinese
- 2022-01-31 05:13:17下载
- 积分:1
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Arms3c44b0 bought their own development board attached demo program can be run d...
自己买的arms3c44b0开发板附带的demo程序,可直接在ADS上跑,可供朋友们借鉴-Arms3c44b0 bought their own development board attached demo program can be run directly in the ADS for friends learn from
- 2023-02-13 14:45:04下载
- 积分:1
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转换数字模拟
数字量转换为模拟量!-To Convert Digital to Analog
- 2022-03-10 11:10:46下载
- 积分:1
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基于44B03的LCD驱动
基于44B03的LCD驱动-based on the LCD driver 44B03
- 2022-04-20 05:47:23下载
- 积分:1