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Intel® Server Board SE7520JR2 Error Reporting and Handling
Revision 1.0
C78844-002
169
Diagnostic LED Decoder
G=Green, R=Red, A=Amber
Checkpoint
MSB LSB
Description
C6 R A G OFF Re-enable cache for boot strap processor
C7 R A G G Early CPU Init Exit
0A G OFF G OFF Initializes the 8042 compatible Key Board Controller.
0B G OFF G G Detects the presence of PS/2 mouse.
0C G G OFF OFF Detects the presence of Keyboard in KBC port.
0E G G G OFF
Testing and initialization of different Input Devices. Also, update the
Kernel Variables.
Traps the INT09h vector, so that the POST INT09h handler gets
control for IRQ1. Uncompress all available language, BIOS logo, and
Silent logo modules.
13 OFF OFF G A Early POST initialization of chipset registers.
24 OFF G R OFF Uncompress and initialize any platform specific BIOS modules.
30 OFF OFF R R Initialize System Management Interrupt.
2A G OFF A OFF
Initializes different devices through DIM.
See DIM Code Checkpoints section of document for more information.
2C G G R OFF
Initializes different devices. Detects and initializes the video adapter
installed in the system that have optional ROMs.
2E G G A OFF Initializes all the output devices.
31 OFF OFF R A
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.
33 OFF OFF A A
Initializes the silent boot module. Set the window for displaying text
information.
37 OFF G A A
Displaying sign-on message, CPU information, setup key message,
and any OEM specific information.
38 G OFF R R
Initializes different devices through DIM. See DIM Code Checkpoints
section of document for more information.
39 G OFF R A Initializes DMAC-1 and DMAC-2.
3A G OFF A R Initialize RTC date/time.
3B G OFF R A
Test for total memory installed in the system. Also, Check for DEL or
ESC keys to limit memory test. Display total memory in the system.
3C G G R R Mid POST initialization of chipset registers.
40 OFF R OFF OFF
Detect different devices (Parallel ports, serial ports, and coprocessor
in CPU, … etc.) successfully installed in the system and update the
BDA, EBDA…etc.
50 OFF R OFF R
Programming the memory hole or any kind of implementation that
needs an adjustment in system RAM size if needed.
52 OFF R G R
Updates CMOS memory size from memory found in memory test.
Allocates memory for Extended BIOS Data Area from base memory.
60 OFF R R OFF Initializes NUM-LOCK status and programs the KBD typematic rate.
75 OFF A R A Initialize Int-13 and prepare for IPL detection.
78 G R R R Initializes IPL devices controlled by BIOS and option ROMs.
7A G R A R Initializes remaining option ROMs.
7C G A R R Generate and write contents of ESCD in NVRam.
84 R G OFF OFF Log errors encountered during POST.
85 R G OFF G Display errors to the user and gets the user response for error.
87 R G G G Execute BIOS setup if needed / requested.