82870P2P64H2 Datasheet, PDF (74/217 Pages) –

Register Description
R
3.3.1.9
SVID—Subsystem Vendor ID Register (Device 31)
Offset:
2C–2Dh
Default Value: 0000h
Attribute:
Size:
R/WO
16 bits
This value is used to identify the vendor of the subsystem.
Bits
Description
15:0
Subsystem Vendor ID (SSVID). This is written by BIOS. This field should be programmed
during bootup. Once written, this register becomes read only.
3.3.1.10
SID—Subsystem ID Register (Device 31)
Offset:
2E–2Fh
Default Value: 0000h
Attribute:
Size:
R/WO
16 bits
This value is used to identify a particular subsystem.
Bits
Description
15:0
Subsystem ID (SSID). This is written by BIOS. This field should be programmed during bootup.
Once written, this register becomes read only.
3.3.1.11
CAP_PTR—Capabilities Pointer Register (Device 31)
Offset:
34h
Default Value: 64h
Attribute:
Size:
RO
8 bits
Bits
Description
7:0
Pointer Value (PTR). This field indicates that offset 64h is the offset of the first capabilities item
in the capabilities list.
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Intel^® 82870P2 P64H2 Datasheet