DOS v3.00

• Released with the 16-bit 6MHz (overclocked to 8-9MHz) 80286 IBM PC AT, in August 1984.
• OEM IBM Corporation and various other manufacturers.
• Added support for 40ms 20Mb hard disk, holds 56 standard 360K double-density floppies of information.
• Added support for 'high capacity' (high density) 1.2Mb disk drives.
• Added 16-bit FAT entries to minimize slack space on hard disks.
• Added extended error reporting for DOS functions.
• Added DOS functions 3dH through 62H and INT 24H.
• DOS function 4fH (Find Next File) requires you to keep DS:DX pointing to the information from a 4eH (Find First File) call.
• DOS function 30H modifies BX and CX.
• The three 16-bit words at the end of the BPB are mandatory.
• Lets you run a program by specifying a path in the filename.
• Stored computer setup information in CMOS chip.
• Future support of Local-Area-Networks (LAN) begun, IBM.
• Commands introduced:
  • ATTRIB
  • COUNTRY
  • DEVICE
  • FCBS
  • GRAFTABL
  • KEYBFR
  • KEYBGR
  • KEYBIT
  • KEYBSP
  • KEYBUK
  • LABEL
  • LASTDRIVE
  • SELECT
  • SHARE
  • VDISK.SYS (RAMDRIVE.SYS), RAM disk
• Commands enhanced:
  • BACKUP
  • DATE
  • DISKCOMP
  • DISKCOPY
  • FORMAT
  • GRAPHICS
  • RESTORE
• Extremely buggy:
  • Batch file parsing problems.
  • DOS environment problems.
  • Network support nonfunctional.

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Filelist