Intel
®
Server Chassis P4304XXMFEN2/P4304XXMUXX Product Family System Integration and Service Guide
87
Checkpoint
Diagnostic LED Decoder
Description
1 = LED On, 0 = LED Off
Upper Nibble
Lower Nibble
MSB
LSB
8h 4h 2h 1h 8h 4h 2h 1h
LED #
#7 #6 #5 #4 #3 #2 #1 #0
72h
0
1
1
1
0
0
1
0
DXE SB devices Init
78h
0
1
1
1
1
0
0
0
DXE ACPI Init
79h
0
1
1
1
1
0
0
1
DXE CSM Init
90h
1
0
0
1
0
0
0
0
DXE BDS Started
91h
1
0
0
1
0
0
0
1
DXE BDS connect drivers
92h
1
0
0
1
0
0
1
0
DXE PCI Bus begin
93h
1
0
0
1
0
0
1
1
DXE PCI Bus HPC Init
94h
1
0
0
1
0
1
0
0
DXE PCI Bus enumeration
95h
1
0
0
1
0
1
0
1
DXE PCI Bus resource requested
96h
1
0
0
1
0
1
1
0
DXE PCI Bus assign resource
97h
1
0
0
1
0
1
1
1
DXE CON_OUT connect
98h
1
0
0
1
1
0
0
0
DXE CON_IN connect
99h
1
0
0
1
1
0
0
1
DXE SIO Init
9Ah
1
0
0
1
1
0
1
0
DXE USB start
9Bh
1
0
0
1
1
0
1
1
DXE USB reset
9Ch
1
0
0
1
1
1
0
0
DXE USB detect
9Dh
1
0
0
1
1
1
0
1
DXE USB enable
A1h
1
0
1
0
0
0
0
1
DXE IDE begin
A2h
1
0
1
0
0
0
1
0
DXE IDE reset
A3h
1
0
1
0
0
0
1
1
DXE IDE detect
A4h
1
0
1
0
0
1
0
0
DXE IDE enable
A5h
1
0
1
0
0
1
0
1
DXE SCSI begin
A6h
1
0
1
0
0
1
1
0
DXE SCSI reset
A7h
1
0
1
0
0
1
1
1
DXE SCSI detect
A8h
1
0
1
0
1
0
0
0
DXE SCSI enable
A9h
1
0
1
0
1
0
0
1
DXE verifying SETUP password
ABh
1
0
1
0
1
0
1
1
DXE SETUP start
ACh
1
0
1
0
1
1
0
0
DXE SETUP input wait
ADh
1
0
1
0
1
1
0
1
DXE Ready to Boot
AEh
1
0
1
0
1
1
1
0
DXE Legacy Boot
AFh
1
0
1
0
1
1
1
1
DXE Exit Boot Services
B0h
1
0
1
1
0
0
0
0
RT Set Virtual Address Map Begin
B1h
1
0
1
1
0
0
0
1
RT Set Virtual Address Map End
B2h
1
0
1
1
0
0
1
0
DXE Legacy Option ROM init
B3h
1
0
1
1
0
0
1
1
DXE Reset system
B4h
1
0
1
1
0
1
0
0
DXE USB Hot plug
B5h
1
0
1
1
0
1
0
1
DXE PCI BUS Hot plug
B6h
1
0
1
1
0
1
1
0
DXE NVRAM cleanup
B7h
1
0
1
1
0
1
1
1
DXE Configuration Reset
00h
0
0
0
0
0
0
0
0
INT19