System Address Map
Figure 3-4. PCI Memory Address Range
4 GB
FFFF_FFFFh
FFE0_0000h
High BIOS
4 GB – 2 MB
DMI Interface
(subtractive decode)
FEF0_0000h
4 GB – 17 MB
4 GB – 18 MB
4 GB – 19 MB
FSB Interrupts
FEE0_0000h
FED0_0000h
DMI Interface
(subtractive decode)
Local (CPU) APIC
I/O APIC
Optional HSEG
FEC8_0000h
FEC0_0000h
FEDA_0000h to
FEDB_FFFFh
4 GB – 20 MB
DMI Interface
(subtractive decode)
F000_0000h
E000_0000h
4 GB – 256 MB
Possible address
range/size (not
ensured)
PCI Express Configuration
Space
4 GB – 512 MB
BARs, Internal
Graphics
DMI Interface
(subtractive decode)
ranges, PCI
Express Port, .
TOLUD
Datasheet
53
INTEL [ INTEL ]
