Expanded memory

from The Free On-line Dictionary of Computing (8 July 2008)

expanded memory

   <storage> Memory used through {EMS}.  In systems based on
   {Intel 80386} or later processor expanded memory is part of
   the {extended memory} that is mapped into the {expanded memory
   page frame} by the processor.  The mapping is controlled by
   the {EMM}.  In earlier systems, a dedicated {EMS} hardware
   adaptor is needed to map memory into the page frame.  In both
   cases, an appropriate {device driver} is needed for the proper
   communication between hardware and {EMM}.

   (1996-01-10)