Technical data

3-130 Computer Group Literature Center Web Site
Test Descriptions
3
VGA54XX - Video Diagnostics Tests
These sections describe the individual Video Graphics Array (VGA) tests.
These tests are not available on PowerPC boards that don’t have a VGA
device on-board.
The firmware now provides support for testing of multiple VGA
controllers within PCI configuration space. This means that the VGA
diagnostics can now be run on multiple Cirrus Logic VGA 54XX
Controllers. This is “only
” true for any firmware supported VGA devices.
Examples of where the VGA tests run include:
1. On a PowerPC board that has one (1) Cirrus Logic VGA54XX
device on the board and one Cirrus Logic VGA54XX PMC/PCI
card attached to the board.
2. On a PowerPC board that has one (1) Cirrus Logic VGA54XX
device on the board and a Cirrus Logic VGA54XX PMC card
attached to the PMC carrier plugged into the backplane of the
chassis.
Entering VGA54XX without parameters causes all VGA tests to execute
in the order shown in the table below.
To run an individual test, add that test name to the VGA54XX command.
The individual tests are described in alphabetical order on the following
pages.
Table 3-23. VGA543X Test Group
Name Description
ATTR Attribute Registers
CRTC CRT Controller Registers
DSTATE DAC State Register
EXTN Extended Registers
GRPH Graphics Controller
MISC Miscellaneous Register