Processor Configuration Registers
2.6.27
SS_CAPID—Subsystem ID and Vendor ID Capabilities
Register
This capability is used to uniquely identify the subsystem where the PCI device resides.
Because this device is an integrated part of the system and not an add-in device, it is
anticipated that this capability will never be used. However, it is necessary because
Microsoft will test for its presence.
B/D/F/Type:
Address Offset:
Reset Value:
Access:
0/1/0–2/PCI
88–8Bh
0000800Dh
RO
Size:
32 bits
BIOS Optimal Default
0000h
Reset
Value
RST/
PWR
Bit
Access
Description
31:16
RO
0h
Reserved (RSVD)
Pointer to Next Capability (PNC)
15:8
7:0
RO
RO
80h
Uncore
Uncore
This field contains a pointer to the next item in the capabilities
list which is the PCI Power Management capability.
Capability ID (CID)
Value of 0Dh identifies this linked list item (capability structure)
as being for SSID/SSVID registers in a PCI-to-PCI Bridge.
0Dh
2.6.28
SS—Subsystem ID and Subsystem Vendor ID Register
System BIOS can be used as the mechanism for loading the SSID/SVID values. These
values must be preserved through power management transitions and a hardware
reset.
B/D/F/Type:
Address Offset:
Reset Value:
Access:
0/1/0–2/PCI
8C–8Fh
00008086h
RW-O
Size:
32 bits
Reset
Value
RST/
PWR
Bit
Access
Description
Subsystem ID (SSID)
31:16
RW-O
0000h
8086h
Uncore
Uncore
This field identifies the particular subsystem and is assigned by
the vendor.
Subsystem Vendor ID (SSVID)
This field identifies the manufacturer of the subsystem and is the
same as the vendor ID which is assigned by the PCI Special
Interest Group.
15:0
RW-O
Datasheet, Volume 2
107
INTEL [ INTEL ]
