Technical data

VGA54XX - Video Diagnostics Tests

http://www.motorola.com/computer/literature 3-135

DSTATE - DAC State Register

Command Input

PPCx-Diag>vga54xx dstate

Description

Test the DAC State Register. This test verifies that the VGA controller

changes when set to the various mode states.

Response/Messages

After the command has been issued, the following line is printed:

VGA54XX DSTATE: DAC State Registers......Running ->

If all parts of the test are completed correctly, then the test passes:

VGA54XX DSTATE: DAC State Registers..Running -> PASSED

If the test fails, then the display appears as follows:

VGA54XX DSTATE: DAC State Registers..Running -> FAILED

VGA54XX/DSTATE Test Failure Data:

Unexpected state read from DAC State Reg

Depending upon which mode failed, then the display appears as follows:

Expected read mode (11B) Found: _____

Or:

Expected write mode (11B) Found: _____