Gigabyte 5AA User Manual page 64

Drive A type / Drive B type
The category identify the types of floppy disk drive A or drive B that has been
installed in the computer.
None No floppy drive installed
360K, 5.25 in. 5-1/4 inch PC-type standard drive; 360 kilobyte
capacity.
1.2M, 5.25 in. 5-1/4 inch AT-type high-density drive; 1.2 megabyte
capacity (3-1/2 inch when 3 Mode is Enabled).
720K, 3.5 in. 3-1/2 inch double-sided drive; 720 kilobyte capacity
1.44M, 3.5 in. 3-1/2
capacity.
2.88M, 3.5 in. 3-1/2
capacity.
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.
inch double-sided drive;
inch double-sided drive;
4-7
BIOS Configuration
1.44 megabyte
2.88 megabyte