INT 62 u - FGDRIVER v3.03 - "FG_SETVPAGE" - SET VISIBLE VIDEO PAGE
        AX = 0098h
        BX = new video page (0000h to 003Fh)
Notes:  For FGDRIVER v1.10, this function was "FG_MEASURE" (see AX=005Bh);
          "FG_SETVPAGE" was AX=003Fh
        The specified page must be a physical or virtual page
SeeAlso: AX=0037h,AX=0091h,AX=0095h

.