6–12
Maintenance and Service Guide
Specifications
Table 6-8
System Memory Map
Size
Memory Address
System Function
640 KB
00000000-0009FFFF
Base memory
128 KB
000A0000-000BFFFF
Video memory
48 KB
000C0000-000CBFFF
Video BIOS
160 KB
000C8000-000E7FFF
Unused
64 KB
000E8000-000FFFFF
System BIOS
15 MB
00100000-00FFFFFF
Extended memory
58 MB
01000000-047FFFFF
Super extended memory
58 MB
04800000-07FFFFFF
Unused
2 MB
08000000-080FFFFF
Video memory (direct access)
4 GB
08200000-FFFEFFFF
Unused
64 KB
FFFF0000-FFFFFFFF
System BIOS
Summary of Contents for Compaq NC4400
Page 56: ...3 4 Maintenance and Service Guide Illustrated Parts Catalog Computer Major Components ...
Page 58: ...3 6 Maintenance and Service Guide Illustrated Parts Catalog Computer Major Components ...
Page 60: ...3 8 Maintenance and Service Guide Illustrated Parts Catalog Computer Major Components ...
Page 62: ...3 10 Maintenance and Service Guide Illustrated Parts Catalog 3 3 Display Assembly Components ...