OS/2 Version 2.0 Overview

OS/2 Version 2.0 is an advanced multitasking, single-user operating system for IBM Personal System/2* computers and other computers equipped with the Intel** 80386**, 80486**, or compatible processors. It exploits a rich set of features from previous versions of OS/2, such as support for multitasking, multithreading, dynamic linking, interprocess communication, a graphical user interface, and the High Performance File System. OS/2 Version 2.0, however, provides significant enhancements over previous versions of OS/2.

The following new features have been implemented in OS/2 Version 2.0:

  • Support for the Intel 80386 32-bit microprocessor instruction set.

  • 32-bit memory management.

  • Enhanced hardware exploitation.

  • Multiple Virtual DOS Machines.

  • Support for Microsoft Windows applications.

  • 32-bit programming environment.

  • Object-code compatibility with previous versions of OS/2, allowing 16-bit applications written for previous versions to execute under Version 2.0 without modification.

  • Enhanced Presentation Manager* user shell, which implements the 1991 SAA* CUA Workplace Environment.

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