scs

系统控制空间SCS、系统控制模块SCB

北慕城南 提交于 2019-12-23 17:59:49
NVIC的一些可编程寄存器控制着中断管理功能,这些寄存器被映射到系统地址空间里,他们所处的区域被称为系统控制区间( SCC )。 除了NVIC,系统控制空间SCS中也包含了许多系统管理的寄存器,这些寄存器被称为系统控制模块( SCB )。 其中有些寄存器控制休眠模式和系统异常配置, 另外还有个寄存器中包含了处理器的识别代码(调试器可以利用该代码识别处理器的类型)。 来源: CSDN 作者: 那个苏轼回不来了丶 链接: https://blog.csdn.net/qq_45763093/article/details/103661105

22 File Links: Hard and Symbolic

这一生的挚爱 提交于 2019-12-23 00:42:17
1 Kernel Data Structures Review 1.每个进程都有一个process table,索引是文件描述符,指向filetable 2.file table中有对文件状态的描述,比如offset 3.v-node(是虚拟文件,一切皆文件) i-node(实际的物理装置信息) 2 Hard Links v-nodes are the file system enteries i-nodes represent the underlying storage mechanisms for that data within that file. hard-link there are two virtual v-nodes that reference the same i-node the file exists in multiple places within the file system, and can have different names. But, whenever you open that file, it is the same underlying data that is accessed. 2.1 Creating Links with ln 1)创建文件f,此时links是1 #> touch f #> ls -l -rw-r--r-

vim配置

ε祈祈猫儿з 提交于 2019-11-28 05:12:08
自用的vim配置信息 syntax on syntax enable "" 设置历史记录条数 set history=2000 "" create undo file set undolevels=1000 "" how many undos set undoreload=10000 "" number of lines to save for undo if v:version >= 730 set undofile "" keep a persistent backup file set undodir=/tmp/vimundo/ endif ""set wildignore=*.swp,*.bak,*.pyc,*.class,.svn "" 显示当前横竖线 set cursorline set cursorcolumn "" 设置退出Vim之后内容显示在终端屏幕,可以用于查看和复制 "" 好处:误删什么,如果以前屏幕打开可以用来找回 set t_ti= t_te= "" 设置在Vim中可以使用鼠标,防止终端无法拷贝 set mouse=a ""========================================== "" Display Settings ""========================================== "" ""