HP Compaq d330 DT Technical Reference Manual page 53

Figure 3-4 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.
Figure 3–3. System Memory Map
FFFF FFFFh
High BIOS Area
(2 MB)
PCI Memory
APIC Config. Space
PCI Memory
Expansion
0100 0000h
00FF FFFFh
Extended Memory
(15 MB)
0010 0000h
000F FFFFh
System BIOS Area
(64 KB)
000F 0000h
000E FFFFh
Extended BIOS
Area
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
hp compaq d330 and d530 Series Personal Computers
Featuring the Intel Pentium 4 Processor
First Edition - June 2003
Technical Reference Guide
4 GB
Top of DRAM
16 MB
1 MB
640 KB
512 KB
3-7