Bus Type Column - Silicon Graphics Octane2 Duo Installation Manual

Bus Type Column

007-4506-001
Mapping the Logical Controller Numbers to the Physical Port Locations
In a Dual Head VPro Octane2 system, the secondary graphics head occupies physical
quadrants C and D, but only uses the XIO connector in slot D. Its location in software is
therefore XIO Slot ID 10.
Note: Physical port numbers are assigned in XIO probing order, which starts at the
highest XIO Slot ID and descends. For example, the Ethernet port on the system module
(XIO Slot ID 15) will be assigned a logical number 0, before an Ethernet port on a board
in the PCI module (XIO Slot ID 13) is assigned logical number 1, because XIO Slot ID 15
is probed before XIO Slot ID 13.
Table C-2 shows the XIO Slot IDs in numeric order and the device or location to which
each is mapped.
XIO Slot ID Mapping
Table C-2
XIO Slot ID # Device or Location
8 System module (heart chip)
9 XIO Quadrant C (lower right of XIO module)
10 XIO Quadrant D (lower left of XIO module)
11 XIO Quadrant B (upper right of XIO module)
12 XIO Quadrant A (upper left of XIO module)
13 PCI module
14 (not assigned)
15 System module (bridge chip: I/O functions)
The column that contains PCI entries should be read only in conjunction with the
Physical XIO Slot ID column that comes before it. If the Physical XIO Slot ID number is
13, the board to which a logical controller number has been assigned is in the PCI
module.
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