The OS/2 Version 2.0 virtual DOS machine environment may be extensively customized to suit the requirements of a particular DOS application. Such properties as DOS device drivers, EMS/XMS memory configurations, and even the interface to hardware facilities can be specified individually for each VDM.
This customization is achieved using the DOS Settings facility, which is accessed by pressing the DOS settings pushbutton on the Session page of the settings notebook.
The DOS Settings facility and the available settings are described in detail in DOS Settings.