System memory map specifications—Intel processors
Size
640 KB
128 KB
48 KB
160 KB
64 KB
15 MB
58 MB
58 MB
2 MB
4 GB
64 KB
138 Chapter 6 Specifications
Memory address
00000000-0009FFFF
000A0000-000BFFFF
000C0000-000CBFFF
000C8000-000E7FFF
000E8000-000FFFFF
00100000-00FFFFFF
04800000-07FFFFFF
04800000-07FFFFFF
08000000-080FFFFF
08200000-FFFEFFFF
FFFF0000-FFFFFFFF
System function
Base memory
Video memory
Video BIOS
Unused
System BIOS
Extended memory
Super extended memory
Unused
Video memory (direct access)
Unused
System BIOS