Chapter 11
Replacing the Motherboard and Associated Components
11-35
11.5.4.2
Probe Order
During the boot sequence, device nodes are probed. The PCI slots are probed in the
order described in
Unless you reconfigure the default, the first graphics accelerator occurring in the
probe order is designated the default console display and assigned the aliases
screen
and
/dev/fb
.
11.5.4.3
Identifying the Default Console Display
The
test screen
command issued at the
ok
prompt requests the default console
display to execute a self-test, thereby identifying itself. The self-test checks memory
and might display color bars on the monitor. If the ok prompt is accessed from an
external display device like a serial terminal or TIP connection, then test information
is output to that connection. For example:
This is the beginning of the self-test output for a Sun XVR-600 graphics accelerator.
If the device does not have a self-test built in, the following message is displayed.
TABLE
11-6
PCI Card Probe Order
Order
Slot Identifier
Slot Position on Rear Panel
Device Node
1
PCI4
top slot
/devices/pci@1f,700000 device 3
2
PCI0
bottom slot
/devices/pci@1e,600000 device 2
3
PCI1
second slot from the bottom
/devices/pci@1e,600000 device 3
4
PCI2
middle slot
/devices/pci@1e,600000 device 4
5
PCI3
second slot from the top
/devices/pci@1e,600000 device 5
ok
test screen
Testing screen
Starting XV-500 Selftest
(This will take an estimated
2-4 minutes for the full test)
. . .
screen device has no selftest method
Summary of Contents for Sun Blade 1500
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