| Version |
Release date |
Comments |
OS/2 1.0
(Codename: CP/DOS) |
December 1987 |
-
Joint IBM-Microsoft development
-
16-bit protected mode OS
-
Required 80286, about 1.5MB RAM
-
Supported max 32MB partitions
-
Text mode interface only
-
Single DOS box support
-
FAT filesystem only
|
OS/2 1.1
(Codename: Trimaran) |
November 1988 |
-
Added graphical user interface - the Presentation Manager
-
Support for larger than 32MB partitions
|
OS/2 1.2
(Codename: Sloop) |
October 1989 |
-
Installable File System Support (IFS)
-
HPFS included
-
Revamped Presentation Manager
-
Dual Boot capability
-
Included REXX and IPF
|
OS/2 1.3
(Codename: Cutter) |
December 1990 |
-
Extensive performance tuning
-
Lowered resource requirements (2MB RAM minimum)
-
Support for ATM fonts
-
Developed by IBM without Microsoft's involvement
|
OS/2 2.0
(Codename: Cruiser) |
April 1992 |
-
32-bit OS
-
Required 80386SX, 4MB RAM
-
Multiple DOS boxes
-
Win-OS/2 support
-
System Object Model (SOM support)
-
WorkPlace Shell (WPS) based on SOM used as GUI
-
Boot Manager
|
OS/2 2.1
(Codename: Borg) |
May 1993 |
-
32-bit GRaphics Engine (GRE)
-
More CD-ROM and SCSI drivers
-
APM and PCMCIA support
-
MMPM/2 included
-
Win-OS/2 based on Windows 3.1
|
OS/2 for Windows
(Codename: Ferengi) |
November 1993 |
-
No Win-OS/2 - used pre-existing Windows 3.1 instead
-
New drivers for S3 based cards
|
| OS/2 2.11 |
February 1994 |
-
Also available as ServicePak XR06200 for OS/2 2.1
-
Primarily bugfixes
|
| OS/2 2.11 SMP |
June 1994 |
-
Symmetric MultiProcessing (SMP) support
-
Support for up to 16 CPUs
|
OS/2 Warp 3.0
(Codename: Warp) |
October 1994 |
-
Performance tuning, lower resource requirements
-
Compatible with Windows 3.11
-
Included BonusPak
-
More drivers for many device types
-
Included DSOM object model
-
Many WPS modifications
|
| OS/2 Warp Connect |
May 1995 |
-
Included full networking support in base OS
-
Peer to peer functionality
|
OS/2 Warp 4.0
(Codename: Merlin) |
September 1996 |
-
Included Java 1.01 runtime and JDK
-
VoiceType support
|