Technical Product Specification

Intel® Server System SR1695WB TPS Appendix B: POST Code LED Decoder
Revision 1.4
Intel order number: E92079-005
58
Checkpoint
Diagnostic LED Decoder
Description
1 = On, 0=Off
Upper Nibble Lower Nibble
MSB LSB
8h 4h 2h 1h 8h 4h 2h 1h
LED #7 #6 #5 #4 #3 #2 #1 #0
0x7Ah 0 1 1 1 1 0 1 0 Enabling the console controller
0x7Bh 0 1 1 1 1 0 1 1 Reserved for console controller
Keyboard (only USB)
0x90h 1 0 0 1 0 0 0 0 Resetting the keyboard
0x91h 1 0 0 1 0 0 0 1 Disabling the keyboard
0x92h 1 0 0 1 0 0 1 0 Detecting the presence of the keyboard
0x93h 1 0 0 1 0 0 1 1 Enabling the keyboard
0x94h 1 0 0 1 0 1 0 0 Clearing keyboard input buffer
0x96h 1 0 0 1 0 1 1 0 Reserved for keyboard
Mouse (only USB)
0x98h 1 0 0 1 0 0 1 0 Resetting the mouse
0x99h 1 0 0 1 0 0 1 1 Detecting the mouse
0x9Ah 1 0 0 1 0 1 1 0 Detecting the presence of mouse
0x9Bh 1 0 0 1 0 1 1 1 Enabling the mouse
0x9Ch 1 0 0 1 0 0 1 0 Reserved for mouse
Serial Port
0xA8h 1 0 1 0 1 0 0 0
Resetting the serial port
0xA9h 1 0 1 0 1 0 0 1
Disabling the serial port
0xAAh 1 0 1 0
1 0 1 0 Detecting the presence of the serial port
0xABh
1 0 1 0
1 0 1 1 Clearing serial port buffer
0xACh
1 0 1 0 1 1 0 0 Enabling serial port
0xADh 1 0 1 0 1 1 0 1 Reserved for serial port
Fixed Media
0xB0h 1 0 1 1 0 0 0 0 Resetting fixed media device
0xB1h 1 0 1 1 0 0 0 1 Disabling fixed media device
0xB2h 1 0 1 1 0 0 1 0
Detecting presence of a fixed media device (SATA hard drive
detection, and so forth)
0xB3h 1 0 1 1 0 0 1 1 Enabling/configuring a fixed media device
0xB4h 1 0 1 1 0 1 0 0 Reserved for fixed media
Removable Media
0xB8h 1 0 1 1 1 0 0 0 Resetting removable media device
0xB9h 1 0 1 1 1 0 0 1 Disabling removable media device
0xBAh 1 0 1 1 1 0 1 0
Detecting presence of a removable media device (SATA CDROM
detection, and so forth)
0xBCh 1 0 1 1 1 1 0 0 Enabling/configuring a removable media device
0xBDh 1 0 1 1 1 1 0 1 Reserved for removable media device
Boot Device Selection (BDS)
0xD0 1 1 0 1 0 0 0 0
Entered the Boot Device Selection phase (BDS)
0xD1 1 1 0 1 0 0 0 1
Return to last good boot device
0xD2 1 1 0 1 0 0 1 0
Setup boot device selection policy
0xD3 1 1 0 1 0 0 1 1
Connect boot device controller
0xD4 1 1 0 1 0 1 0 0
Attempt flash update boot mode
0xD5 1 1 0 1
0 1 0 1
Transfer control to EFI boot
0xD6 1 1 0 1 0 1 1 0 Trying to boot device selection
0xDF 1 1 0 1 1 1 1 1 Reserved for boot device selection
Pre-EFI Initialization (PEI) Core
0xE0h
1 1 1 0 0 0 0 0
Entered Pre-EFI Initialization phase (PEI)
0xE1h
1 1 1 0 0 0 0 1
Started dispatching early initialization modules (PEIM)
0xE2h
1 1 1 0 0 0 1 0
Initial memory found, configured, and installed correctly
0xE3h
1 1 1 0 0 0 1 1
Transfer control to the DXE Core
PEI Modules
0xF0h 1 1 1 1 0 0 0 0
Install PEIM for Platform Status Codes
0xF1h 1 1 1 1 0 0
0 1 Detecting Platform Type
0xF2h
1 1 1 1
0 0 1 0
Early Platform Initialization
0xF3h 1 1 1 1 0 0 1 1 PEI Modules initialized
Driver eXecution Environment (DXE) Core