Datasheet
Datasheet, Volume 2 163
Processor Configuration Registers
2.10.2 DID—Device Identification Register
This register combined with the Vendor Identification register uniquely identifies any
PCI device.
2.10.3 PCICMD—PCI Command Register
B/D/F/Type: 0/6/0/PCI
Address Offset: 2–3h
Reset Value: 015Dh
Access: RO-FW
Size: 16 bits
Bit Access
Reset
Value
RST/
PWR
Description
15:0 RO-FW 015Dh Uncore
Device Identification Number MSB (DID_MSB)
Identifier assigned to the processor root port (virtual PCI-to-PCI
bridge, PCI Express Graphics port).
B/D/F/Type: 0/6/0/PCI
Address Offset: 4–5h
Reset Value: 0000h
Access: RW, RO
Size: 16 bits
BIOS Optimal Default 00h
Bit Access
Reset
Value
RST/
PWR
Description
15:11 RO 0h Reserved (RSVD)
10 RW 0b Uncore
INTA Assertion Disable (INTAAD)
0 = This device is permitted to generate INTA interrupt
messages.
1 = This device is prevented from generating interrupt
messages. Any INTA emulation interrupts already asserted
must be de-asserted when this bit is set.
Only affects interrupts generated by the device (PCI INTA from a
PME or Hot-plug event) controlled by this command register. It
does not affect upstream MSIs, upstream PCI INTA-INTD assert
and deassert messages.
Note: PCI Express* Hot-Plug is not supported on the processor.
9RO 0bUncore
Fast Back-to-Back Enable (FB2B)
Not Applicable or Implemented. Hardwired to 0.