## Display Device Driver Reference for OS/2

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### DOS Compatibility Application Test

The following test performs OS/2 video device driver testing using DOS- applications (DOOM**)

Note: In this scenario, selecting means using the arrow keys and [Enter] to select.

1.Install DOOM (if not previously installed).

Note: If you do not have DOOM installed, refer to your DOOM Installation Manual for installation instructions.

2.Start the application by typing DOOM on OS/2 command line.

3.Press [ENTER] or [ESC] to get to the main menu.

4.Select READ THIS to get information about the application and then press [ENTER] to see instructions of the control keys.

5.Press [ENTER] to get back to the main menu.

6.Select NEW GAME.

7.Select episode.

8.Select skill level.

9.Use the arrow keys for moving and [Ctrl] key for shooting.

Note: Try also switching to the OS/2 desktop by pressing [Ctrl+Esc] and then come back by selecting DOOM.EXE from the window list. Verify that in all above operations, video corruption does not occur.

10.Press [F7] to quit (and "Y" to confirm).

11.To exit, press [F10] or select QUIT GAME from the main menu.

Note: Verify that in all above operations, video corruption does not occur .