System Address Map
R
164
Intel
®
82925X/82925XE MCH Datasheet
Figure 9-4. PCI Memory Address Range
High BIOS
E000_0000h
PCI_Address_Ranges_G-P-only
DMI Interface
(subtractively decode)
FSB Interrupts
DMI Interface
(subtractively decode)
Local (processor)
APIC
I/O APIC
DMI Interface
(subtractively decode)
PCI Express
Configuration Space
DMI Interface
(subtractively decode)
F000_0000h
FEC0_0000h
FEC8_0000h
FED0_0000h
FEE0_0000h
FEF0_0000h
FFE0_0000h
FFFF_FFFFh
4 GB
4 GB – 2 MB
4 GB – 17 MB
4 GB – 18 MB
4 GB – 19 MB
4 GB – 20 MB
4 GB – 256 MB
4 GB – 512 MB
TOLUD
Optional HSEG
FEDA_0000h to
FEDB_FFFFh
Possible address range
(Not guaranteed)
Programmable windows,
graphics ranges,
PCI Express* Port
could be here
9.3.1
APIC Configuration Space (FEC0_0000h–FECF_FFFFh)
This range is reserved for APIC configuration space. The I/O APIC(s) usually reside in the ICH6
portion of the chipset, but may also exist as stand-alone components.
The IOAPIC spaces are used to communicate with IOAPIC interrupt controllers that may be
populated in the system. Since it is difficult to relocate an interrupt controller using plug-and-play
software, fixed address decode regions have been allocated for them. Processor accesses to the
default IOAPIC region (FEC0_0000h to FEC7_FFFFh) are always forwarded to DMI.
Содержание 82925X
Страница 78: ...Host Bridge DRAM Controller Registers D0 F0 R 78 Intel 82925X 82925XE MCH Datasheet...
Страница 98: ...EPBAR Registers Egress Port Register Summary R 98 Intel 82925X 82925XE MCH Datasheet...
Страница 108: ...DMIBAR Registers Direct Media Interface DMI RCRB R 108 Intel 82925X 82925XE MCH Datasheet...
Страница 156: ...Host PCI Express Graphics Bridge Registers D1 F0 R 156 Intel 82925X 82925XE MCH Datasheet...
Страница 172: ...System Address Map R 172 Intel 82925X 82925XE MCH Datasheet...
Страница 192: ...Electrical Characteristics R 192 Intel 82925X 82925XE MCH Datasheet...
Страница 220: ...Ballout and Package Information R 220 Intel 82925X 82925XE MCH Datasheet Figure 12 3 MCH Package Dimensions MCH...