copy 30-days os, add comments and add doc
参照《30天自制操作系统》 作者: [日] 川合秀实 出版社: 人民邮电出版社 出品方: 图灵教育 原作名: 30日でできる! OS自作入門 译者: 周自恒 / 李黎明 / 曾祥江 / 张文旭
代码部分基本上都是原书代码，部分做修改 代码中添加了中文注释，便于方便阅读的同学参考
适用于不想去看书的同学或者看书不能完全明白的同学
因为书中有些内容直接带过，并没有细讲，还有就是书中为了照顾新手，前面的代码到后来就会有推翻现象，所以这个教程从最完整代码讲起
windows下:
* 进入harib目录
* 双击!cons_nt.bat
* 输入命令 make run_full
* 回车
其他系统： 上一步windwos下生成的haribote.img转为iso或者使用工程中自带的iso，可在虚拟机(virtualbox，qemu等)上启动
进行中
知道的能解释一下子吗？
RESB 0x7dfe-$ ; 0x7dfeまでを0x00で埋める命令
DB 0x55, 0xaa
经典调色板格式精确映射到 VGA 寄存器。每种颜色占用三个字节（红色、绿色和蓝色各一个），并且仅使用每个字节的低六位（因为 VGA 每种颜色仅使用六位。）实际上，这意味着每个字节仅包含介于零和 63（含）。 （但请注意，某些游戏使用 0 到 64 之间的值！在这些情况下，64 应与 63 视为相同，因为这就是 VGA 的作用。）
这种格式通常称为6 位 RGB。
这上面说的是使用每个字节的低6位，除以4就是取低6位吗？除以4取的是高8位吧。
您好，我按照您说的运行!cons_nt.bat，然后输入指令make run_full，报以下错误
../z_tools/make.exe -r -C gview
make.exe[2]: Entering directory E:/30-days-os/harib/gview' ../../z_tools/make.exe -r gview.hrb make.exe[3]: *** No rule to make target bmp.obj', needed by gview.bim'. Stop. make.exe[3]: Entering directory E:/30-days-os/harib/gview'
make.exe[3]: Leaving directory E:/30-days-os/harib/gview' make.exe[2]: *** [default] Error 2 make.exe[2]: Leaving directory E:/30-days-os/harib/gview'
make.exe[1]: *** [full] Error 2
make.exe[1]: Leaving directory `E:/30-days-os/harib'
..\z_tools\make.exe: *** [run_full] Error 2
1、第4天，第6节色号设定，set_pattle函数里对rgb[0] / 4，这个为什么要除以4呢？
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
Django
The Web framework for perfectionists with deadlines.
Laravel
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
Microsoft
Open source projects and samples from Microsoft.
Google
Google ❤️ Open Source for everyone.
Alibaba
Alibaba Open Source for everyone
D3
Data-Driven Documents codes.
Tencent
China tencent open source team.