6–20 Maintenance and Service Guide
Specifications
Table 6-16
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