Intel 925 Data Sheet - Page 130

Host-PCI Express* Graphics Bridge Registers (D1:F0) R 8.1.25 SS_CAPID-Subsystem ID and Vendor ID Capabilities (D1:F0) PCI Device: Address Offset: Default Value: Access: Size: 1 88h 0000800Dh RO 32 bits 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. Bit 31:16 15:8 7:0 Access & Default Description RO 80h RO 0D h Reserved Pointer to Next Capability: This field contains a pointer to the next item in the capabilities list which is the PCI Power Management capability. Capability ID: A value of 0Dh identifies this linked list item (capability structure) as being for SSID/SSVID registers in a PCI-to-PCI Bridge. 8.1.26 SS-Subsystem ID and Subsystem Vendor ID (D1:F0) PCI Device: Address Offset: Default Value: Access: Size: 1 8Ch 00008086h RO 32 bits System BIOS can be used as the mechanism for loading the SSID/SVID values. These values must be preserved through power management transitions and hardware reset. Bit 31:16 15:0 Access & Default R/WO 0000h R/WO 8086h Description Subsystem ID (SSID): 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 that is assigned by the PCI Special Interest Group. 130 Intel® 82925X/82925XE MCH Datasheet