Technical data

Code Meaning
cccccccc Graphics status bits
dddddddd Graphics status register address
eeeeeeee Graphics status register contents
ffffffff Expected state of status bits
Extended Error Format 000F:
This format is used by the video option board readback test for 4- and 8-plane
modules.
xxx 000F aaaaaaaa bbbbbbbb cccccccc dddddddd eeeeeeee
Code Meaning
xxx FRU
aaaaaaaa Error code
bbbbbbbb Color that the Brooktree is programmed
cccccccc Value of the video option board readback register
dddddddd Expected value of the video board readback register
eeeeeeee Head/failure (10-16 for one head, 21-23 for two heads)
Table A–23 describes Model 60 and VLC color compare failures for one head.
Table A–23 Color Compare Failures - One Head
Error Description
10 red > blue
11 red <= blue
12 blue > green
13 blue <= green
14 green > red
15 green <= red
16 sync < green
Table A–24 describes Model 60 color compare failures for two heads.
Interpreting Error Codes A–61