Compaq 108164-003 - ProLiant - 800 Integration Notes page 27

PCI Bus Numbering in a Microsoft Windows NT Environment
Table 9: Test 2 – PCI BIOS bus detection in the ProLiant 8000
Bus
Detection
Order/
Controller
Discovery
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
10th
11th
12th
13th
14th
*Bus number is different than previous configuration.
13UK-1200A-WWEN
Slot Number PCI Bridge/
Controller
Type - Test 2
Primary Bus Host to PCI
(O) Bridge
Slot 1 Empty
Slot 2 NC3131
Slot 3 Empty
Slot 4 Empty
Secondary
Host to PCI
Bus (6) Bridge
Slot 5 NC3131
Slot 6 Empty
Slot 7 Empty
Slot 8 Empty
Tertiary Bus Host to PCI
(13) Bridge
Slot 9 Empty
Slot 10 Smart Array
4250ES
Slot 11 Smart Array
4250ES
Bus Number Description of PCI BIOS Discovery
Assignment Process
The PCI BIOS assigns 0 to the Primary
Bus 0 Bus and continues downstream with
the controller discovery.
Slot 1 is empty, no PCI bus number
assignment.
N/A
NIC in slot 2 contains a PCI bridge and
the PCI BIOS increments the PCI bus
Bus 1
number to 1.
N/A
Slots 3 and 4 are empty, no PCI bus
number assignment.
N/A
The PCI BIOS discovers the
Bus 6
Secondary Bus and assigns it bus
number 6.
NIC in slot 5 contains a PCI bridge and
Bus 7
the PCI BIOS increments the PCI bus
number to 7.
N/A
N/A Slots 6-8 are empty, no PCI bus
number assignment.
N/A
The PCI BIOS discovers the Tertiary
Bus 13
Bus and assigns it bus number 13.
Slot 9 is empty, no PCI bus number
assignment.
N/A
Intelligent drive array controller with
PCI bridge is detected in slot 10. The
Bus 14
PCI BIOS increments the PCI number
to bus 14 and assigns it to the bridge
on the controller.
Slot 11 also contains a bridged array
Bus 15
controller, changing its original bus
number from bus 14 to bus 15.
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