INT 10 - VIDEO - UltraVision - LOAD USER FONT (EGA,VGA)
AX = CD10h
BH = bytes per character (08h,0Ah,0Bh,0Eh,13h,14h)
CX = ABCDh load 9xN alternate font (v2+)
else number of characters to load
DX = character offset into font table
DS:SI -> 8-byte ASCII font name
ES:BP -> font definitions
Return: AX = FFFFh if invalid font parameters
Notes:  loads the designated characters into UltraVision's resident font area
should be followed by a video mode set to reload character generator

See also: 101100

10CD10 - VIDEO - UltraVision - LOAD USER FONT (EGA,VGA)