Datasheet

Appendix C: POST Code LED Decoder Intel® Server System SR1640TH TPS
Revision 1.0 101
Intel order number: E94847-001
Diagnostic LED Decoder
O = On, X=Off
Upper Nibble Lower Nibble
MSB LSB
Checkpoint
8h 4h 2h 1h 8h 4h 2h 1h
LED #7 #6 #5 #4 #3 #2 #1 #0
Description
0x99h O X X O X X O O
Detecting the mouse
0x9Ah O X X O X O O X
Detecting the presence of mouse
0x9Bh O X X O X O O O
Enabling the mouse
Fixed Media
0xB0h O X O O X X X X
Resetting fixed media device
0xB1h O X O O X X X O
Disabling fixed media device
0xB2h O X O O X X O X
Detecting presence of a fixed media device (SATA hard drive detection,
etc.)
0xB3h O X O O X X O O
Enabling / configuring a fixed media device
Removable Media
0xB8h O X O O O X X X Resetting removable media device
0xB9h O X O O O X X O Disabling removable media device
0xBAh O X O O O X O X
Detecting presence of a removable media device (SATA CDROM
detection, etc.)
0xBCh O X O O O O X X Enabling / configuring a removable media device
Boot Device Selection (BDS)
0xD0 O O X O X X X X Entered the Boot Device Selection phase (BDS)
0xD1 O O X O X X X O Return to last good boot device
0xD2 O O X O X X O X Setup boot device selection policy
0xD3 O O X O X X O O Connect boot device controller
0xD4 O O X O X O X X Attempt flash update boot mode
0xD5 O O X O X O X O Transfer control to EFI boot
0xD6 O O X O X O O X Trying to boot device selection
0xDF O O X O O O O O Reserved for boot device selection
Pre-EFI Initialization (PEI) Core
0xE0h O O O X X X X X Entered Pre-EFI Initialization phase (PEI)
0xE1h O O O X X X X O Started dispatching early initialization modules (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 Transfer control to the DXE Core
Driver eXecution Environment (DXE) Core
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 O X X Flash Update
0xEEh O O O X O O X X Calling Int 19. One beep unless silent boot is enabled.
0xEFh O O O X O O X O Unrecoverable boot failure
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 Crisis recovery capsule failed integrity check of capsule descriptors
Runtime Phase / EFI Operating System Boot
0XF2h O O O O X X O X Signal that the OS has switched to virtual memory mode
0XF4h O O O O X O X X Entering the sleep state
0XF5h O O O O X O X O Exiting the sleep state
0XF8h O O O O O X X X
Operating system has requested EFI to close boot services has been
cancelled.
Progress Code
0XF9h O X X O X X X X Resetting the keyboard
0xFAh O X X O X X X O Disabling the keyboard