HP A2Y15AV Manuale Utente
Datasheet, Volume 2
53
Processor Configuration Registers
2.5.7
HDR—Header Type Register
This register identifies the header layout of the configuration space. No physical
register exists at this location.
register exists at this location.
2.5.8
SVID—Subsystem Vendor Identification Register
This value is used to identify the vendor of the subsystem.
2.5.9
SID—Subsystem Identification Register
This value is used to identify a particular subsystem.
B/D/F/Type:
0/0/0/PCI
Address Offset:
Eh
Reset Value:
00h
Access:
RO
Size:
8 bits
Bit
Access
Reset
Value
RST/
PWR
Description
7:0
RO
00h
Uncore
PCI Header (HDR)
This field always returns 0 to indicate that the Host Bridge is a
This field always returns 0 to indicate that the Host Bridge is a
single function device with standard header layout. Reads and
writes to this location have no effect.
B/D/F/Type:
0/0/0/PCI
Address Offset:
2C–2Dh
Reset Value:
0000h
Access:
RW-O
Size:
16 bits
Bit
Access
Reset
Value
RST/
PWR
Description
15:0
RW-O
0000h
Uncore
Subsystem Vendor ID (SUBVID)
This field should be programmed during boot-up to indicate the
This field should be programmed during boot-up to indicate the
vendor of the system board. After it has been written once, it
becomes read only.
B/D/F/Type:
0/0/0/PCI
Address Offset:
2E–2Fh
Reset Value:
0000h
Access:
RW-O
Size:
16 bits
Bit
Access
Reset
Value
RST/
PWR
Description
15:0
RW-O
0000h
Uncore
Subsystem ID (SUBID)
This field should be programmed during BIOS initialization. After
This field should be programmed during BIOS initialization. After
it has been written once, it becomes read only.