INT 10 - VIDEO - Realtek RTVGA - SET ROM 8x14 GRAPHICS CHARACTERS
        AX = 1111h
        BL = row specifier (see AX=1121h)
Note:   this function is meant to be called immediately after a mode set;
          results are unpredictable at other times
SeeAlso: AX=110Fh,AX=1110h,AX=1122h

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