Int 62 Fn 004E  u - Fgdriver V3.03 - "fg_initxms" - Initialize Extended M  [V]

   AX = 004Eh

Return: AX = status
       0000h successful
       FFFFh extended memory manager inaccessible or not installed

Note:  For FGDRIVER v1.10, this function was "FG_DISPLAYP" (see AX=001Ah);
     "FG_INITXMS" was AX=00A1h

See Also: AX=0003h,AX=004Ch