Intel i7-2600 CM8062300834302S User Manual

Datasheet, Volume 2

137

GMADR is the PCI aperture used by software to access tiled graphics surfaces in a 
linear fashion.

63:39

RW

0000000h

FLR, 

Uncore

Reserved for Memory Base Address (RSVDRW)
Must be set to 0 since addressing above 512 GB is not supported.

38:29

RW

00000000

00b

FLR, 

Uncore

Memory Base Address (MBA)
Memory Base Address (MBA): Set by the OS, these bits correspond 

to address signals [38:29].

28

RW-L

0b

FLR, 

Uncore

512 MB Address Mask (ADMSK512)
This Bit is either part of the Memory Base Address (RW) or part of 

the Address Mask (RO), depending on the value of MSAC[2:1].
See MSAC (Device 2 Function 0, offset 62h) for details.

27

RW-L

0b

FLR, 

Uncore

256 MB Address Mask (ADMSK256)
This bit is either part of the Memory Base Address (R/W) or part of 

the Address Mask (RO), depending on the value of MSAC[2:1]. See 

MSAC (Device 2 Function 0, offset 62h) for details.

26:4

RO

000000h

Uncore

Address Mask (ADM)
Hardwired to 0s to indicate at least 128 MB address range.

3

RO

1b

Uncore

Prefetchable Memory (PREFMEM)
Hardwired to 1 to enable prefetching.

2:1

RO

10b

Uncore

Memory Type (MEMTYP)
00 = 32-bit address.
10 = 64-bit address

0

RO

0b

Uncore

Memory/IO Space (MIOS)
Hardwired to 0 to indicate memory space.