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Show device displays information about each I/O device. Polling
1
checks the XMI bus for device configurations. The next line contains
three columns. The first column contains the assigned console device
name. The second column displays the name of the device given by the
device controller. The third column shows the device type.
Polling sizes the XMI bus for devices connected to <device>. The <de-
2
vice> is the name the console assigns to an I/O adapter or device in the
system (such as kfmsa0). A list of installed adapters is given in the
show configuration command display. Refer to the Basic Trouble-
shooting or Console Reference manuals for details on the show con-
figuration command.
In this example, this is a boot from a disk in the system cabinet,
3
since the last digit in the first column of the show device command is
0. The zero indicates I/O channel 0 which connects to devices in the
system cabinet.
The device code of the boot device is du, a is the boot device controller
designation, and 2 specifies the unit number of the boot device. The
next 2 is the node number, 0 is the device channel number, 1 is the
XMI node number, and 0 is the I/O channel number.
This is a boot from a disk in an external RA disk cabinet, since the last
4
column of the show device command is RA92. This indicates an RA92
disk in an external RA disk cabinet. The device code of the boot device
is du, c is the boot device controller designation, and 1 specifies the
unit number of the boot device. The 0 is the node number, 0 is the
device channel number, 2 is the XMI node number, and 0 is the I/O
channel number.
This is a boot from a disk in the expander cabinet, since the last digit
5
in the first column of the show device command is 1. The 1 indicates
I/O channel 1 which connects to devices in the expander cabinet. The
device code of the boot device is du, d is the boot device controller
designation, and 3 specifies the unit number of the boot device. The
next 3 is the node number, 0 is the device channel number, 1 is the
XMI node number, and 1 is the I/O channel number.
For more information:
Basic Troubleshooting
Console Reference Manual
Booting 4-25
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