Bios Features Setup - Gigabyte GA-686NX User Manual

GA-686NX
conventional) memory installed in the system.
The value of the base memory is typically 512 K for systems with 512
K memory installed on the motherboard, or 640 K for systems with
640 K or more memory installed on the motherboard.
Extended Memory
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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Figure 4.3: BIOS Features Setup
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Virus Warning
This category flashes on the screen. During and after the system boots up, any
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