Int 10 Fn 1112 - Video - Realtek Rtvga - Set Rom 8x8 Double-dot Characte [V]
AX = 1112h
BL = row specifier (see AX=1121h)
Return: nothing
Note: this function is meant to be called immediately after a mode set;
results are unpredictable at other times
See Also: AX=110Fh"Realtek",AX=1110h"Realtek",AX=1111h"Realtek",AX=1123h