有谁可以帮我解释一下这个DOS编程的具体命令作用啊？ - DOS开发编程 & 发展交流（开发室） - 中国DOS联盟论坛

以下是一个选择加载哪一种驱动程序的方式，请高手们帮我注释一下它们每条命令的作用可以吗？因为我只是一只菜鸟来的。。。 @ECHO OFF goto start :w_menu UltraBoot Disk Startup Menu 屯屯屯屯屯屯屯屯屯屯屯屯屯屯屯 [1. CDROM Driver Only ] [2. CDROM and SCSI Device] [3. Compact Mode ] 哪哪哪哪哪哪哪哪哪哪哪哪哪哪哪 [4. Quit to DOS (ESC) ] :: :t_menu UltraBoot Disk Startup Menu 屯屯屯屯屯屯屯屯屯屯屯屯屯屯屯 1. CDROM Driver Only 2. CDROM and SCSI Device 3. Compact Mode 哪哪哪哪哪哪哪哪哪哪哪哪哪哪哪 4. Quit to DOS (ESC) :: :start set path=%ramdrv%\bin set path=%path%;%ramdrv%\doscmd mouse /u cls wbat text 2,2 @startup.bat:t_menu wbat text 6,4 (+white on +blue) " 1. CDROM Driver Only " wbat text 7,5 (+red on black) "2" wbat text 8,5 (+red on black) "3" wbat text 10,5 (+red on black) "4" wbat cursor 12 func ? Time remaining: func -w10>%temp%\tmp.bat call %temp%\tmp.bat del %temp%\tmp.bat wbat text 12,1 " " if "%?%"=="27" goto domenu4 if "%?%"=="13" goto domenu1 if "%?%"=="208" goto menu2 if "%?%"=="200" goto menu4 if "%?%"=="49" goto domenu1 if "%?%"=="50" goto domenu2 if "%?%"=="51" goto domenu3 if "%?%"=="52" goto domenu4 goto domenu1 :menu1 set ?= call w.bat fix menu 1,1 (white on black) @startup.bat:w_menu #1 goto doit :menu2 set ?= call w.bat fix menu 1,1 (white on black) @startup.bat:w_menu #2 goto doit :menu3 set ?= call w.bat fix menu 1,1 (white on black) @startup.bat:w_menu #3 goto doit :menu4 set ?= call w.bat fix menu 1,1 (white on black) @startup.bat:w_menu #4 goto doit :doit cls if "%?%"=="1" goto domenu1 if "%?%"=="2" goto domenu2 if "%?%"=="3" goto domenu3 if "%?%"=="4" goto domenu4 goto domenu4 :domenu1 cls echo Extracting device driver(s)... mkdir %ramdrv%\device extract /y /l %ramdrv%\device /e a:\cdrom.cab >nul device %ramdrv%\device\vide-cdd.sys /D:MSCD001 goto common :domenu2 echo Extracting device driver(s)... mkdir %ramdrv%\device extract /y /l %ramdrv%\device /e a:\cdrom.cab >nul extract /y /l %ramdrv%\device /e a:\scsi.cab >nul device %ramdrv%\device\vide-cdd.sys /D:MSCD001 device %ramdrv%\device\btdosm.sys device %ramdrv%\device\flashpt.sys device %ramdrv%\device\btcdrom.sys /D:MSCD001 device %ramdrv%\device\aspi2dos.sys device %ramdrv%\device\aspi8dos.sys device %ramdrv%\device\aspi4dos.sys device %ramdrv%\device\aspi8u2.sys device %ramdrv%\device\aspicd.sys /D:MSCD001 goto common :domenu3 echo Extracting device driver(s)... mkdir %ramdrv%\device extract /y /l %ramdrv%\device /e a:\cdrom.cab >nul device %ramdrv%\device\vide-cdd.sys /D:MSCD001 cls echo. echo Preparing to start your computer. echo This may take a few minutes. Please wait... echo. mkdir %ramdrv%\pdos extract /y /l %ramdrv%\pdos /e a:\pdos.cab >nul set path=%path%;%ramdrv%\pdos copy %ramdrv%\pdos\pdos.def %ramdrv%\ >nul mkdir %ramdrv%\vc extract /y /l %ramdrv%\vc /e a:\vc.cab >nul set path=%path%;%ramdrv%\vc lh mscdex /D:MSCD001 lh smartdrv goto end :domenu4 cls echo. echo To see the menu again, type STARTUP and press ENTER. echo. set startup=4 goto end :common cls echo. echo Preparing to start your computer. echo This may take a few minutes. Please wait... echo. mkdir %ramdrv%\pdos extract /y /l %ramdrv%\pdos /e a:\pdos.cab >nul set path=%path%;%ramdrv%\pdos copy %ramdrv%\pdos\pdos.def %ramdrv%\ >nul mkdir %ramdrv%\vc extract /y /l %ramdrv%\vc /e a:\vc.cab >nul set path=%path%;%ramdrv%\vc mkdir %ramdrv%\tools if exist a:\ghost.cab extract /y /l %ramdrv%\tools /e a:\ghost.cab >nul if exist a:\pqmagic.cab extract /y /l %ramdrv%\tools /e a:\pqmagic.cab >nul set path=%path%;%ramdrv%\tools lh mscdex /D:MSCD001 lh smartdrv echo. echo The diagnostic tools were successfully loaded to drive Z:. echo. :end echo To view Help, type HELP and then press ENTER. echo. %ramdrv% lh mouse >nul lh doskey >nul set ?= set wbat= if "%startup%"=="4" goto eof menu :eof set startup=