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ScreenMode
==========

Syntax
------

     #include <pc.h>
     
     int  ScreenMode(void);

Description
-----------

This function reports the current video mode as known to the system
BIOS.  It does so by accessing the byte at absolute address 40:49h.

Return Value
------------

The video mode.

Example
-------

     video_mode = ScreenMode();


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