Technical data

3-138 Computer Group Literature Center Web Site
Test Descriptions
3
MISC - Miscellaneous Register
Command Input
PPCx-Diag>VGA54XX MISC
Description
This test verifies the correct operation of the VGA Miscellaneous Control
Register. The test proceeds as follows:
1. Each Graphics Controller Register is initialized with one of 256
possible values, with reserved bits being masked off to a value of
zero.
2. The Graphics Controller Register is read back to verify that the data
that was written to the register in step 1 was written correctly.
Response/Messages
After the command has been issued, the following line is printed:
VGA54XX MISC: Miscellaneous Registers....Running --->
If all parts of the test are completed correctly, then the test passes:
VGA54XX MISC: Miscellaneous Registers....Running ---> PASSED
If the test fails, then the display appears as follows:
VGA54XX MISC: Miscellaneous Registers....Running ---> FAILED
VGA54XX/MISC Test Failure Data:
Read Register: _____
Write Register: _____
Value read: ________ Expected: ________