Technical data

VGA54XX - Video Diagnostics Tests
http://www.motorola.com/computer/literature 3-141
3
PELM - Pixel Mask Register
Command Input
PPCx-Diag>VGA543X PELM
Description
This test verifies the correct operation of the VGA Pixel Mask Register.
The test proceeds as follows:
1. The Pixel Mask Register is initialized with one of 256 possible
values, with reserved bits being masked off to a value of zero.
2. The Pixel Mask 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 PELM: Pixel Mask Register........Running ->
If all parts of the test are completed correctly, then the test passes:
VGA54XX PELM: Pixel Mask Register...Running -> PASSED
If any part of the test fails, then the display appears as follows:
VGA54XX PELM: Pixel Mask Register...Running -> FAILED
VGA54XX/PELM Test Failure Data:
Value read: ________ Expected: ________