Int 10h, 1110h Load User Alpha Font, Adjust Height EGA, MCGA, VGA
Changes font to user-defined font in text mode, and adjusts the
displayed character height.
Entry AX = 1110h
BH = Bytes per character
BL = Font block to load (EGA/MCGA 0..3 | VGA 0..7)
CX = Number of characters
DX = Number of first character
ES:BP = Pointer to character bitmaps
Return Nothing