2.12 Operating System DOS Microsoft/COMPAQ COMPAQ MS-DOS 2.12 ANSI.SYS ASSIGN.COM BACKUP.COM BASIC.COM BASICA.COM BASICA.EXE CHKDSK.COM CLOCK.SYS COMMAND.COM COMP.COM DEBUG.COM DEMO.BAS DEMO.BAT DEMO1.BAS DEMO2.BAS DEMO3.BAS DEMO4.BAS DISKCOMP.COM DISKCOPY.COM EDLIN.COM ENHDISK.SYS EXE2BIN.EXE FDISK.COM FIND.EXE FORMAT.COM GRAPHICS.COM IBMBIO.COM IBMDOS.COM INTEREST.BAS LINK.EXE MODE.COM MORE.COM PRINT.COM RECOVER.COM RESTORE.COM SORT.EXE SYS.COM TEST.EXE TREE.COM USA.DAT WORDS