Technical Product Specification

Appendix D: POST Code Diagnostic LED Decoder Intel® Server Board S5500BC TPS
Intel order number: E42249-009 Revision 1.8
142
Checkpoint
Diagnostic LED Decoder
Description
O = On, X=Off
Upper Nibble
Lower Nibble
MSB
LSB
8h
4h
2h
1h
8h
4h
2h
1h
LED
#7
#6
#5
#4
#3
#2
#1
#0
0xD3
O
O
X
O
X
X
O
O
Trying to boot device selection 3
0xD4
O
O
X
O
X
O
X
X
Trying to boot device selection 4
0xD5
O
O
X
O
X
O
X
O
Trying to boot device selection 5
0xD6
O
O
X
O
X
O
O
X
Trying to boot device selection 6
0Xd7
O
O
X
O
X
O
O
O
Trying to boot device selection 7
0xD8
O
O
X
O
O
X
X
X
Trying to boot device selection 8
0xD9
O
O
X
O
O
X
X
O
Trying to boot device selection 9
0xDA
O
O
X
O
O
X
O
X
Trying to boot device selection A
0xDB
O
O
X
O
O
X
O
O
Trying to boot device selection B
0xDC
O
O
X
O
O
O
X
X
Trying to boot device selection C
0xDD
O
O
X
O
O
O
X
O
Trying to boot device selection D
0xDE
O
O
X
O
O
O
O
X
Trying to boot device selection E
0xDF
O
O
X
O
O
O
O
O
Trying to boot device selection F
Pre-EFI Initialization (PEI) Core
0xE0h
O
O
O
X
X
X
X
X
Started dispatching early initialization modules (PEIM)
0xE1h
O
O
O
X
X
X
X
O
Reserved for Initializaiton module use (PEIM)
0xE2h
O
O
O
X
X
X
O
X
Initial memory found, configured, and installed correctly
0xE3h
O
O
O
X
X
X
O
O
Reserved for Initializaiton module use (PEIM)
Driver eXecution Environment (DXE) Core (not accompanied by a beep code)
0xE4h
O
O
O
X
X
O
X
X
Entered EFI driver execution phase (DXE)
0xE5h
O
O
O
X
X
O
X
O
Started dispatching drivers
0xE6h
O
O
O
X
X
O
O
X
Started connecting drivers
DXE Drivers
0xE7h
O
O
O
X
O
O
X
O
Waiting for user input
0xE8h
O
O
O
X
O
X
X
X
Checking password
0xE9h
O
O
O
X
O
X
X
O
Entering BIOS setup
0xEAh
O
O
O
X
O
X
O
X
Flash Update
0xEEh
O
O
O
X
O
O
O
X
Calling Int 19. One beep unless silent boot is enabled.
0xEFh
O
O
O
X
O
O
O
O
Unrecoverable boot failure
Runtime Phase / EFI Operating System Boot
0xF4h
O
O
O
O
X
O
X
X
Entering Sleep state
0xF5h
O
O
O
O
X
O
X
O
Exiting Sleep state
0xF8h
O
O
O
O
O
X
X
X
Operating system has requested EFI to close boot services
(ExitBootServices ( ) Has been called)
0xF9h
O
O
O
O
O
X
X
O
Operating system has switched to virtual address mode
(SetVirtualAddressMap ( ) Has been called)
0xFAh
O
O
O
O
O
X
O
X
Operating system has requested the system to reset (ResetSystem
( ) has been called)
Pre-EFI Initialization Module (PEIM) / Recovery
0x30h
X
X
O
O
X
X
X
X
Crisis recovery has been initiated because of a user request
0x31h
X
X
O
O
X
X
X
O
Crisis recovery has been initiated by software (corrupt flash)
0x34h
X
X
O
O
X
O
X
X
Loading crisis recovery capsule
0x35h
X
X
O
O
X
O
X
O
Handing off control to the crisis recovery capsule
0x3Fh
X
X
O
O
O
O
O
O
Unable to complete crisis recovery capsule