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AIX Version 4.3 System Management Guide: Operating System and Devices
Location Codes
The location code is a path from the
CPU drawer or system unit through the adapter, signal cables, and the
asynchronous distribution box (if there is one) to the device or workstation.
This code is another way of identifying physical devices.
The location code consists of up to four
fields of information depending on the type of device. These fields represent
drawer, slot, connector, and port. Each of these fields consists of two
characters.
A drawer's location code consists of only the
drawer field and is simply a two-character code. An adapter's location code
consists of the drawer and slot fields and has the format AA-BB
,
where AA
corresponds to the drawer's location and BB
indicates the bus and slot that contains the adapter. Other devices have
location codes of formats AA-BB-CC
or AA-BB-CC-DD
,
where AA-BB
is the location code of the adapter to which the
device is connected, CC
corresponds to the connecter on the
adapter to which the device is connected, and DD
corresponds to a
port number or SCSI device address.
For information on finding the labels with the
location codes on the hardware, see your operator guide.
The following devices contain
location codes and are discussed in this section:
Adapter Location Codes
The location code for an adapter consists
of two pairs of digits with the format AA-BB,
where
AA
identifies the location code of the drawer containing the
adapter and BB
identifies the I/O bus and slot containing the
card.
A value of 00
for the
AA
field means that the adapter is located in the CPU drawer or
system unit, depending on the type of system. Any other value for the
AA
field indicates that the card is located in an I/O expansion
drawer. In this case, the AA
value identifies the I/O bus and slot
number in the CPU drawer that contains the asynchronous expansion adapter. The
first digit identifies the I/O bus with 0
corresponding to the
standard I/O bus and 1
corresponding to the optional I/O bus. The
second digit identifies the slot number on the indicated I/O bus.
The first digit of the BB
field
identifies the I/O board containing the adapter card. If the card is in the CPU
drawer or system unit, this digit will be 0
for the standard I/O
bus and 1
for the optional I/O bus. If the card is in an I/O
expansion drawer, this digit is 0
. The second digit identifies the
slot number on the indicated I/O bus (or slot number in the I/O expansion
drawer) that contains the card.
A location code of 00-00
is used
to identify the standard I/O board.
Examples:
00-05 |
Identifies an adapter card in slot 5 of the standard I/O board and
is located in either the CPU drawer or the system unit, depending on the type
of system. |
00-12 |
Identifies an adapter in slot 2 of the optional I/O bus and is
located in the CPU drawer. |
18-05 |
Identifies an adapter card located in slot 5 of an I/O expansion
drawer. The drawer is connected to the asynchronous expansion adapter located
in slot 8 of the optional I/O bus in the CPU drawer. |
Printer/Plotter Location Codes
Location codes of
00-00-S1-00
or 00-00-S2-00
indicate the printer or
plotter device is connected to the standard I/O board serial ports
s1
or s2
. A location code of 00-00-0P-00
indicates the parallel printer is connected to the standard I/O board parallel
port.
Any other location code indicates the printer
or plotter is connected to an adapter card other than the standard I/O board.
For these printers and plotters, the location code format is
AA-BB-CC-DD
, where AA-BB
indicates the location code
of the controlling adapter.
AA
|
A value of 00
for the AA
field indicates
the adapter card is located in the CPU drawer or system unit depending on the
type of system. Any other value for the AA
field indicates the
card is located in an I/O expansion drawer; in which case, the first digit
identifies the I/O bus and the second digit identifies the slot number on the
bus, in the CPU drawer, that contains the asynchronous expansion adapter to
which the I/O expansion drawer is connected.. |
BB |
The first digit of the BB
field identifies the I/O bus
containing the adapter card. If the card is in the CPU drawer or system unit,
this digit is 0
for the standard I/O bus and 1
for
the optional I/O bus. If the card is in an I/O expansion drawer, this digit is
0
. The second digit identifies the slot number on the I/O bus (or
slot number in the I/O expansion drawer) that contains the card. |
CC |
The CC
field identifies the connector on the adapter
card where the asynchronous distribution box is connected. Possible values are
01
, 02
, 03
, and 04
. |
DD |
The DD
field identifies the port number on the
asynchronous distribution box where the printer or plotter is attached. |
tty Location Codes
Location codes of
00-00-S1-00
or 00-00-S2-00
indicate the tty device is
connected to the standard I/O serial ports s1
or s2
.
Any other location code will indicate the tty
device which is connected to an adapter card other than the standard I/O board.
For these devices, the location code format is AA-BB-CC-DD
, where
AA-BB
indicates the location code of the controlling adapter card.
AA |
A value of 00
for the AA
field indicates
the adapter card is located in the CPU drawer or system unit depending on the
type of system. Any other value for the AA
field indicates the
card is located in an I/O expansion drawer. In this case, the first digit
identifies the I/O bus, and the second digit identifies the slot number on the
bus in the CPU drawer that contains the asynchronous expansion adapter where
the I/O expansion drawer is connected. |
BB |
The first digit of the BB
field identifies the I/O bus
containing the adapter card. If the card is in the CPU drawer or system unit,
this digit will be 0
for the standard I/O bus and 1
for the optional I/O bus. If the card is in an I/O expansion drawer this digit
is 0
. The second digit identifies the slot number on the I/O bus
(or slot number in the I/O expansion drawer) that contains the card. |
CC |
The CC
field identifies the connector on the adapter
card where the asynchronous distribution box is connected. Possible values are
01
, 02
, 03
, and 04
. |
DD |
The DD
field identifies the port number on the
asynchronous distribution box where the tty device is attached. |
SCSI Device Location Codes
All SCSI devices including:
- CD-ROMs
- Disks
- Initiator devices
- Read/write optical drives
- Tapes
- Target mode
The location code format is
AA-BB-CC-S,L
. The AA-BB
fields identify the location
code of the SCSI adapter controlling the SCSI device.
AA |
A value of 00
for the AA
field indicates the
controlling adapter card is located in the CPU drawer or system unit, depending
on the type of system. |
BB |
The BB
field identifies the I/O bus and slot containing the
card. The first digit identifies the I/O bus. It is 0
for the
standard I/O bus and 1
for the optional I/O bus. The second digit
is the slot on the indicated I/O bus containing the card. A value of
00
for the BB
field indicates the standard SCSI
controller. |
CC |
The CC
field identifies the card's SCSI bus that the device
is attached to. For a card that provides only a single SCSI bus, this field
will be set to 00
. Otherwise, a value of 00
indicates
a device attached to the card's internal SCSI bus and a value of
01
indicates a device attached to the card's external SCSI
bus. |
S,L |
The S,L
field identifies the SCSI ID and logical unit number
(LUN) of the SCSI device. The S
value indicates the SCSI ID and
the L
value indicates the LUN. |
Direct-Bus-Attached Disk Location Codes
For a direct-attached disk device, the
location code format is AA-BB
. The AA
field is a
value of 00
, that indicates the disk is located in the system
unit. The BB
field indicates the I/O bus and slot number where the
disk is attached. The first digit is always 0
, which indicates the
disk is attached to the standard I/O bus. The second digit identifies the slot
number on the standard I/O bus to which the disk is attached.
Serial-Linked Disk Location Codes
The location code for serial-linked disk
drives is of the format AA-BB-CC-DD
, where AA-BB
indicates the location code of the controlling adapter card.
The individual fields are interpreted as
follows:
AA |
A value of 00
for the AA
field indicates
the controlling adapter card is located in the CPU drawer or system unit,
depending on the type of system. |
BB |
The BB
field identifies the I/O bus and slot containing
the card. The first digit identifies the I/O bus. It is 0
for the
standard I/O bus and 1
for the optional I/O bus. The second digit
is the slot on the indicated I/O bus that contains the card. |
CC |
The CC
field identifies the connector on the adapter
card where the controller drawer is attached. Possible values are
00
, 01
, 02
, and 03
. |
DD |
The DD
field identifies the logical unit number (LUN)
of the disk. This corresponds to the slot in the drawer where the disk resides. |
Diskette Drive Location Codes
Diskette drives have location codes of
either 00-00-0D-01
or 00-00-0D-02
, indicating that
they are attached to the standard I/O planar's diskette ports 0
or
1
.
Dials/LPFKeys Location Codes
For a graphics input adapter attached
Dials/LPFKeys device, the location code format is AA-BB-CC.
The individual fields are interpreted as
follows:
AA |
A value of 00
for the AA
field indicates
the controlling adapter card is located in the CPU drawer or system unit,
depending on the type of system. |
BB |
The BB
field identifies the I/O bus and slot containing
the card. The first digit identifies the I/O bus. It is 0
for the
standard I/O bus and 1
for the optional I/O bus. The second digit
is the slot on the indicated I/O bus that contains the card. |
CC |
The CC
field indicates the card connector where the
device is attached. The value will be either 01
or
02
, depending on whether the device is attached is port
1
or port 2
on the card. |
Note: Serially attached
Dials/LPFKeys devices do not indicate location codes. This is because these
devices are considered to be attached to a tty device. The tty device is
specified by the user during Dials/LPFKeys definition.
Multiprotocol Port Location Codes
The location code for a multiprotocol
port is of the format AA-BB-CC-DD
where AA-BB
indicates the location code of the multiprotocol adapter card.
The individual fields are interpreted as
follows:
AA |
A value of 00
for the AA
field indicates
the multiprotocol adapter card is located in the CPU drawer or system unit,
depending on the type of system. |
BB |
The BB
field identifies the I/O bus and slot containing
the card. The first digit identifies the I/O bus. It is 0
for the
standard I/O bus and 1
for the optional I/O bus. The second digit
is the slot on the indicated I/O bus that contains the card. |
CC |
The CC
field identifies the connector on the adapter
card to which the multiprotocol distribution box is connected. The value is
always 01
. |
DD |
The DD
field identifies the physical port number on the
multiprotocol distribution box. Possible values are 00
,
01
, 02
, and 03
. |
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