xos is a sample of operating system, refer to 《操作系统真象还原》by 郑钢.

Name		Name	Last commit message	Last commit date
Latest commit History 133 Commits
boot		boot
command		command
device		device
fs		fs
kernel		kernel
lib		lib
shell		shell
thread		thread
userprog		userprog
README.md		README.md
makefile		makefile

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