MSDOS Virtual Memory

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MS-DOSVirtual Memory
?? ??? ???

• ???? ??????
• ????? 86

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• MS-DOS
• Microsoft Disk Operating System
• ????? ????

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???????

• QDOS
• Quick and Dirty Operating System
• Written by Tim Paterson for SCP in 1980
• 86-DOS
• A license in December 1980
• Full right in July 1981 before PC

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???????(????? 1)

• IBM ???? ?? ????? PC
• 12 August 1981

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???????(????? 2)

• IBM ???? ?? ????? PC
• PC-DOS ?? IBM ????? ??????
• MS-DOS ?? ????????? ????? ??????
• PC-DOS ???? MS-DOS ??? ?? ??? ???????? IBM ?? ??
  ????? ?????.
• ???? ?????? ?? ?? ????? ?? DOS ???? ??
• Compaq DOS

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???????(????? 3)

• MS-DOS 1.14 - July 1981
• PC DOS 1.0 - August 1981
• PC DOS 1.1 - May 1982
• MS-DOS 1.25 - May 1982
• MS-DOS 2.0 - March 1983
• PC DOS 2.1 - October 1983
• MS-DOS 2.11 - March 1984
• MS-DOS 2.25 - October 1985
• MS-DOS 3.0 - August 1984 (32 MB max HDD)

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???????(????? 4)

• MS-DOS 3.1 - November 1984 - support for
  Microsoft networking
• MS-DOS 3.2 - January 1986
• PC DOS 3.3 - April 1987 - support for IBM PS/2
• MS-DOS 3.3 - August 1987 - supported multiple
  logical drives
• MS-DOS 4.0 - June 1988
• PC DOS 4.0 - July 1988
• MS-DOS 4.01 - December 1988

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???????(????? 5)

• MS-DOS 5.0 - June 1991 - memory management ,
  QBasic, Virtual Dos Machine
• MS-DOS 6.0 - March 1993
• MS-DOS 6.2 - November 1993
• MS-DOS 6.21 - February, 1994
• MS-DOS 6.22 - June 1994 - last official
  stand-alone version.

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???????(????? 6)

• PC DOS 7.0 - April, 1995
• MS-DOS 7.0 - August 1995 , embedded in Windows 95
• MS-DOS 7.1 - August 1996 , embedded in Windows
  98, support FAT32
• MS-DOS 8.0 - September 2000, embedded in Windows
  ME, XP32, Vista 32

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?????????? ???? ?? ?????

• ???? ?????? ??? ????
• ??????? ?? ???????? ???? ????
• ?? ???? ???? ?????? ?????! ??????? ??? ??????
  ???? ?? ????? ????.

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????????? ?????

• Dos Family
• PC-DOS
• Open DOS
• Free DOS
• GNU/DOS
• PTS DOS
• DOSBox

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PC-DOS

• ??????? MS-DOS ?? ???? ???? IBM ????? ??????.

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Open, Free DOS

• ???? ????
• ???? ????????? 16 ? 32 ????
• ??? ????? GPL (General Public License)

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DOSBox

• ???????? x86
• ????? ????? DOS
• ???? ????
• ???? ????? ?? ??? ??????? ????? ????????? ?????
  ???? ???????? OS/2? Palm? PlayStation ?
  ?????????? GP2X

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???? ?? ???????

• XCopy and Move
• FDisk and Format
• Delete and Undelete
• Hostname and ipconfig

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??????? ?? ???? ???

• A ANSI.SYS APPEND ARP ASSIGN ASSOC AT
  ATMADM ATTRIB
• B BATCH BACKUP BOOTCFG BREAK
• C CACLS CALL CD CHCP CHDIR CHKDSK
  CHKNTFS CHOICE CIPHER CLS CMD COLOR
  COMMAND COMP COMPACT CONTROL CONVERT
  COPY CTTY
• D DATE DEBUG DEFRAG DEL DELETE DELTREE
  DIR DISABLE DISKCOMP DISKCOPY DISKPART
  DOSKEY DOSSHELL DRIVPARM
• E ECHO EDIT EDLIN EMM386 ENABLE
  ENDLOCAL ERASE EXIT EXPAND EXTRACT
• FFASTHELP FC FDISK FIND FINDSTR FIXBOOT
  FIXMBR FOR FORMAT FTP FTYPE
• G GOTO GRAFTABL

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??????? ?? ???? ???(?????)

• H HELP HOSTNAMEIIF IFSHLP.SYS IPCONFIG
• J NONE
• K KEYB
• L LABEL LH LISTSVC LOADFIX LOADHIGH
  LOCK LOGON
• M MAP MD MEM MKDIR MODE MORE MOVE
  MSAV MSBACKUP MSD MSCDEX MWBACKUP
• N NBTSTAT NET NETSH NETSTAT NLSFUNC
  NSLOOKUPO NONE
• P PATH PATHPING PAUSE PING POPD POWER
  PRINT PROMPT PUSHD
• Q QBASIC
• R RD REG REN RENAME RMDIR ROUTE RUNAS
• S SCANDISK SCANREG SET SETLOCAL SETVER
  SFC SHARE SHIFT SHUTDOWN SMARTDRV SORT
  START SUBST SWITCHES SYS SYSTEMINFO
  SYSTEMROOT
• T TASKKILL TELNET TIME TITLE TRACERT
  TREE TYPEUUNDELETE UNFORMAT UNLOCKVVER
  VERIFY VOL
• W NONE
• X XCOPY
• Y NONE
• Z NONE

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??????? ?????

• ?? ???? ?? ??? RAM ?? ???? ????
• ???? ?????? ????? ???? RAM ???? ????? ???????.
• ???? ???? ?? ?????? ???? ?????? ? ?? ??? ???
  ???? ?????

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Virtual Memory

• ?? ???? ?? ???? ??????? RAM ?? ?? ??????? ??????.
• ???? ?? ???? ??? ?? ?? ?? ?????? ??????.
• ?? ?? Paging ?? ???? ??????.
• ?? ?????? ?? ?? ??????? swap ???? ??????.
• ???? ???? ?????????? ??????? ?? ?? ?? ??? ??????
  ? ?? ???? ???? ?? ????? ????? ?? ??????? RAM ??
  ?????????.

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