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164
Diagnostic LED Decoder
Check
G=Green, R=Red, A+Amber
point
MSB
2C
G
2E
G
31
OFF
33
OFF
37
OFF
38
G
39
G
3A
G
Appendix F: Diagnostic Code Checkpoints
LSB
G
R
OFF
G
A
OFF
OFF
R
A
OFF
A
A
G
A
A
OFF
R
R
OFF
R
A
OFF
A
R
Description
Initializes different
devices. Detects and
initializes the video
adapter installed in the
system that have optional
ROMs
Initializes all the output
devices
Allocate memory for ADM
module and uncompress
it. Give control to ADM
module for initialization.
Initialize language and
font modules for ADM.
Activate ADM module.
Initializes the silent boot
module. Set the window
for displaying text
information.
Displaying sign-on
message, CPU
information, setup key
message, and any OEM
specific information.
Initializes different devices
through DIM. See DIM
Code Checkpoints section
of document for more
information.
Initializes DMAC-1 and
DMAC-2.
Initialize RTC date/time
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