Technical data

3-92 Computer Group Literature Center Web Site
Test Descriptions
3
REG - PCI/PMC Slot Register Access
Command Input
PPCx-Diag>pcibus reg
Description
The purpose of this function is to test any available PCI or PMC slots on
PowerPC based boards. The test loops through all possible slots for the
current board. The test then checks to see if the slot is inhabited, if not, the
test is not performed. If a device is present, then access to the device’s PCI
configuration space is made, and the interrupt line register is written with
a sixteen byte pattern. Each of these bytes written is verified, and finally
the register is restored to its initial value.
Note The test passes if all the conditions are met, or if the slot is not
populated (some boards have multiple slots).
Response/Messages
After the command has been issued, the following line is printed:
PCIBUS REG: PCI/PMC Slot Register Access:... Running --->
If all parts of the test are completed correctly, then the test passes:
PCIBUS REG: PCI/PMC Slot Register Access:..Running ---> PASSED
If any part of the test fails, then the display appears as follows:
PCIBUS REG: PCI/PMC Slot Register Access:...Running ---> FAILED
(error message)
Refer to the section PCIBUS Error Messages for a list of the error
messages and their meaning.