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11 base address, 12 svid: subsystem vendor identification, 13 sid: subsystem id – Intel 460GX User Manual

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Intel® 460GX Chipset Software Developer’s Manual

8-7

WXB Hot-Plug

Bits

Description

7

Multi-function Device
Selects whether this is a multi-function device, that may have alternative configuration
layouts. The IHPC is not a multifunction device. Hardwired Value = 0.

6:0

Configuration Layout
This field identifies the format of the 10h through 3Fh space. This field specifies the
“standard” or “default” PCI configuration layout. Hardwired Value = 00h

8.1.11

Base Address

Address Offset:

10h-13h

Size:

32 bits

Default Value:

00000000h

Attribute:

Read/Write, Read-Only

This is a standard PCI configuration register which provides power-up software with the ability to
build a consistent address map before booting the machine.

Bits

Description

31:8

Base Address
Read/Write.

7:4

Indicate 256-byte Address Space Requested
Hardwired Value = 0h.

3

Not Prefetchable
Hardwired Value = 0.

2:1

Type: Located anywhere in 32-bit address space.
Hardwired Value = 00.

0

Memory Space Indicator
Hardwired Value = 0.

8.1.12

SVID: Subsystem Vendor Identification

Address Offset:

2Ch –2Dh

Size:

16 bits

Default Value:

0000h

Attributes:

Write-Once (Pwr Good Reset Only)

See PCI Specification, Revision 2.2.

8.1.13

SID: Subsystem ID

Address Offset:

2Eh - 2Fh

Size:

16 bits

Default Value:

0000h

Attributes:

Write-Once (Pwr Good Reset Only)

See PCI Specification, Revision 2.2.

8.1.14

Interrupt Line

Address Offset:

3Ch

Size:

8 bits

Default Value:

FFh

Attribute:

Read-Write (Pwr Good Reset Only)