Intel Xeon Wolfdale E3210 P4X-UPE3210-316-6M1333 Data Sheet

Datasheet

41

A hole can be created at 15 MB–16 MB as controlled by the fixed hole enable in 

Device 0 space. Accesses within this hole are forwarded to the DMI Interface. The 

range of physical DRAM memory disabled by opening the hole is not remapped to the 

top of the memory – that physical DRAM space is not accessible. This 15–16 MB hole is 

an optionally enabled ISA hole. 

The ISA Hole is used by validation and customer SV teams for some of their test cards. 

That is why it is being supported. There is no inherent BIOS request for the 15–16 MB 

window.

DOS Compatibility Memory

Main Memory

ISA Hole (optional)

Main Memory

Main Memory

TSEG (1MB/2MB/8MB, 

optional)

PCI Memory Range

LT

FLASH

APIC

4 GB

0h

0010_0000h

00F0_0000h

0100_0000h

8 GB

FFFF_FFFFh

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