Bios Features Setup - Gigabyte GA-686DX User Manual

GA-686DX
The BIOS determines how much extended memory is present during
the POST.
This is the amount of memory located above 1 MB in the CPU's
memory address map.
Expanded Memory
Expanded Memory in memory defined by the Lotus/Intel/Microsoft
(LIM) standard as EMS.
Many standard DOS applications can not utilize memory above 640 K,
the Expanded Memory Specification (EMS) swaps memory
which not utilized by DOS with a section, or frame, so these
applications can access all of the system memory.
Memory can be swapped by EMS is usually 64 K within 1 MB or
memory above 1 MB, depends on the chipset design.
Expanded memory device driver is required to use memory as
Expanded Memory.
Other Memory
This refers to the memory located in the 640 K to 1024 K address
space. This is memory that can be used for different
applications.
DOS uses this area to load device drivers to keep as much base
memory free for application programs. Most use for this area is
Shadow RAM.

4.6. BIOS FEATURES SETUP

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