INT 62 u - FGDRIVER v3.03 - "FG_GETENTRY" - GET PAGE TYPE AND ADDRESS
        AX = 0036h
        ES:BX -> variable pointer record (see below)
        CX = page number (00h-3Fh)
Notes:  For FGDRIVER v1.10, this function was "FG_CHGTEXT" (see AX=000Ch);
          "FG_GETENTRY" did not exist yet
        Page addresses are segments for pages stored in conventional memory
          (including physical and virtual pages), and EMS or XMS handles for
          pages stored in EMS or XMS
SeeAlso: AX=0000h,AX=008Fh

Format of variable pointer record:
Offset  Size    Description
 00h    WORD    segment of WORD buffer for page address
 02h    WORD    offset of WORD buffer for page address
 04h    WORD    segment of WORD buffer for page type
 06h    WORD    offset of WORD buffer for page type

Values for page type:
 0000h  unallocated
 0001h  physical
 0002h  virtual
 0003h  logical page, stored in expanded memory (EMS)
 0004h  logical page, stored in extended memory (XMS)
 0005h  logical page, stored in conventional memory

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