HP Compaq D315 Technical Reference Manual page 49

Figure 3-3 shows the system memory map.
Host,
PCI, AGP Area
Host, PCI,
ISA Area
DOS Compatibility
Area
NOTE:
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
area is mapped to PCI or AGP locations.
[1] D315 model, 1 GB; d325, 2 GB
[2] Area typically less according to need and Setup configuration. Default area is E6100-FFFFFh.
Figure 3–3. System Memory Map
FFFF FFFFh
High BIOS Area
(2 MB)
FFE0 0000h
FFDF FFFFh
PCI Memory
(18 MB)
FEC1 0000h
FEC0 FFFFh
APIC Config. Space
(64 KB)
FEC0 0000h
FEBF FFFFh
PCI Memory
Expansion
(3060 MB)
2000 0000h
1FFF FFFFh
Host/PCI Memory
Expansion
(496 MB)
0100 0000h
00FF FFFFh
Extended Memory
(15 MB)
0010 0000h
000F FFFFh
System BIOS Area
(128 KB max [2] )
000E 0000h
000D FFFFh
Option ROM
(128 KB)
000C 0000h
000B FFFFh
Graphics/SMRAM
RAM (128 KB)
000A 0000h
0009 FFFFh
Fixed Mem. Area
(128 KB)
0008 0000h
0007 FFFFh
Base Memory
(512 KB)
0000 0000h
Compaq D315 and hp d325 Personal Computers
Featuring the AMD Athlon XP Processor
Second Edition - April 2003
Technical Reference Guide
4 GB
[1]
16 MB
1 MB
640 KB
512 KB
3-7