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
TABLE 11-6:
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
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