//uart
https://www.cnblogs.com/blogernice/articles/9850920.html
https://blog.csdn.net/qq543716996/article/details/105219398

//勤为本start.s分析
https://blog.csdn.net/caogos/article/details/78984158

https://blog.csdn.net/kzl1996/article/details/82497413?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_title-0&spm=1001.2101.3001.4242
//mmu tlb

//两个是同一个博客,但解释了循环点a0为何没有自加问题
https://blog.csdn.net/cs_yf/article/details/82288935?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-7.control&dist_request_id=1328626.20999.16154320787743117&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-7.control
https://blog.csdn.net/cs_yf/article/details/83154622?utm_medium=distribute.pc_relevant.none-task-blog-OPENSEARCH-12.control&dist_request_id=1328627.43.16152959946833501&depth_1-utm_source=distribute.pc_relevant.none-task-blog-OPENSEARCH-12.control
//

https://blog.csdn.net/u010383937/article/details/73217377?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_title-0&spm=1001.2101.3001.4242

https://blog.csdn.net/omnispace/article/details/77600687?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_title-8&spm=1001.2101.3001.4242

good

MIPS CPU一般采用双相相关联存储器实现TLB，即每个TLB表项包含一对相邻的虚拟地址页（虚拟地址空间上连续）对应两个单独的物理地址（物理地址空间上可以不连续）。
该表项表示将虚拟地址0xe000 0000开始的128MB虚拟地址空间，映射到从0x4000 0000开始的64MB物理地址空间，以及从0x4400 0000开始的64MB物理地址空间，每个物理地址段后面的标志位（C2DVG）表示映射模式。
https://www.cnblogs.com/justin-y-lin/p/13818045.html

https://www.cnblogs.com/Melles/p/10714224.html
http://blog.chinaunix.net/uid-26694208-id-4219768.html

存在问题：
用户太、核心态?

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来源： https://www.cnblogs.com/retry/p/14519273.html