INT 62 u - FGDRIVER v1.10 - "FG_WHERE" - GET CURRENT CURSOR POSITION
        AX = 0034h
        ES:BX -> variable pointers (see below)
Return: indicated variables filled with cursor row and column for active
          display
Note:   FGDRIVER is the external video driver for the shareware
          Fastgraph/Light by Ted Gruber Software

Format of variable pointers:
Offset  Size    Description
 00h    WORD    segment of WORD buffer for cursor row
 02h    WORD    offset of WORD buffer for cursor row
 04h    WORD    segment WORD buffer for cursor column
 06h    WORD    offset WORD buffer for cursor column