Operating systems › DOS (MS-DOS / DR-DOS) › MS-DOS 3.3
MS-DOS 3.3
1987
The 1987 release supporting 1.44MB 3.5-inch floppies, multiple hard-disk partitions and improved international support.
Machines
Chips
Reference & documentation
External technical references for programming MS-DOS 3.3 and for writing emulators.
| Resource | Type | Notes |
|---|---|---|
| EXE Format - ModdingWiki ↗ | Format | MZ EXE header, relocation table field-by-field |
| Design of the FAT file system ↗ | Format | Hex-offset tables for FAT12/16 structures |
| Microsoft FAT Specification ↗ | Format | Primary Microsoft FAT spec v1.03 (PDF) |
| Ralf Brown's Interrupt List (master files) ↗ | Interrupt list | Author's canonical release downloads |
| DOS Memory Management ↗ | Memory map | Conventional, upper, high memory areas |
| WinWorld: MS-DOS 3.30 ↗ | ROMs | Disk images, many OEM variants |
| MS-DOS 3.3 Disk Image (Internet Archive) ↗ | ROMs | Bootable 360K floppy image for emulators |
| Microsoft MS-DOS Source Code ↗ | Source | Official asm sources for v1.25, 2.0, 4.0 |
| MS-DOS 3.30 Source Code (AR1972/DOS3.3) ↗ | Source | Actual 3.30 kernel/utility assembly sources |