Compaq dc5850 - Microtower PC Technical Reference Manual page 33

Figure 3-2. System Memory Map (for maximum of 8 gigabytes)
✎
All locations in memory are cacheable. Base memory is always mapped to DRAM. The next 128
KB fixed memory area can, through the north bridge, be mapped to DRAM or to PCI space.
Graphics RAM areas are mapped to PCI locations.
Technical Reference Guide
1 FFFF FFFEh
FFE0 0000h
F000 0000h
Main
Memory
Area
0100 0000h
00FF FFFFh
0010 0000h
000F FFFFh
DOS
Compatibilty
Area
0000 0000h
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Processor/Memory Subsystem
8 GB
4.2 GB
High BIOS Area
4 GB
PCI
Memory
Area
256 MB
IGP
32 MB
Main
Memory
16 MB
Main
Memory
1 MB
BIOS
Extended BIOS
Expansion Area
Legacy Video
640 KB
Base Memory
3-5