Int 62 Fn 005C  u - Fgdriver V3.03 - "fg_memavail" - Query Amount Of Free  [V]

   AX = 005Ch

Return: DX:AX = number of bytes of conventional memory available

Note:  For FGDRIVER v1.10, this function was "FG_TRANSFER" (see AX=00A9h);
     "FG_MEMAVAIL" was AX=009Bh

See Also: AX=004Ch,AX=005Dh