Intel SE7520JR2 Technical Manual page 169

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