Int 10H [MDA] [CGA] [PCjr] [EGA] [MCGA] [VGA] Function 0FH (15) Get video mode

Obtains the current display mode of the active video controller.

Call with:

AH = 0FH

Returns:

AH = number of character columns on screen

AL = display mode (see Int 10H Function 00H)

BH = active display page

Note:

This function can be called to obtain the screen width before clearing the screen with Int 10H Functions 06H or 07H.