Base Memory; Extended Memory - Gigabyte GA-7VA User Manual

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The category determines whether the computer will stop if an error is detected during power up.
8NO Errors
The system boot will not stop for any error that may be detected
and you will be prompted.
8All Errors
Whenever the BIOS detects a non-fatal error the system will be stopped.
8All, But Keyboar
The system boot will not stop for a keyboard error; it will stop for
all other errors. (Default value)
8All, But Diskette
The system boot will not stop for a disk error; it will stop for all
other errors.
8All, But Disk/Key
The system boot will not stop for a keyboard or disk error; it will
stop for all other errors.
Memory
The category is display-only which is determined by POST (Power On Self Test) of the BIOS.

Base Memory

The POST of the BIOS will determine the amount of base (or 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.
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