Int 10H [EGA] [VGA] Function 12H (18) Subfunction 20H (32) Select alternate printscreen

Selects an alternate print-screen routine for the EGA and VGA that works properly if the screen length is not 25 lines. The ROM BIOS default print-screen routine always prints 25 lines.

Call with:

AH = 12H

BL = 20H

Returns:

Nothing