Appendix C: LED Decoder
Intel
®
Server System H2000WP Family Service Guide
65
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
0xA4h
1 0 1 0 0 1 0 0 QPI
Initialization
0xA5h
1 0 1 0 0 1 0 1 QPI
Initialization
0xA6h
1 0 1 0 0 1 1 0 QPI
Initialization
0xA7h
1 0 1 0 0 1 1 1 QPI
Initialization
0xA8h
1 0 1 0 1 0 0 0 QPI
Initialization
0xA9h
1 0 1 0 1 0 0 1 QPI
Initialization
0xAAh
1 0 1 0 1 0 1 0 QPI
Initialization
0xABh
1 0 1 0 1 0 1 1 QPI
Initialization
0xACh
1 0 1 0 1 1 0 0 QPI
Initialization
0xADh
1 0 1 0 1 1 0 1 QPI
Initialization
0xAEh
1 0 1 0 1 1 1 0 QPI
Initialization
0xAFh
1 0 1 0 1 1 1 1 QPI
Initialization
Integrated Memory Controller (IMC)
0xB0h
1 0 1 1 0 0 0 0 Memory
Initialization
of
Integrated
Memory
Controller
0xB1h
1 0 1 1 0 0 0 1 Memory
Initialization
of
Integrated
Memory
Controller
0xB2h
1 0 1 1 0 0 1 0 Memory
Initialization
of
Integrated
Memory
Controller
0xB3h
1 0 1 1 0 0 1 1 Memory
Initialization
of
Integrated
Memory
Controller
0xB4h
1 0 1 1 0 1 0 0 Memory
Initialization
of
Integrated
Memory
Controller
0xB5h
1 0 1 1 0 1 0 1 Memory
Initialization
of
Integrated
Memory
Controller
0xB6h
1 0 1 1 0 1 1 0 Memory
Initialization
of
Integrated
Memory
Controller
0xB7h
1 0 1 1 0 1 1 1 Memory
Initialization
of
Integrated
Memory
Controller
0xB8h
1 0 1 1 1 0 0 0 Memory
Initialization
of
Integrated
Memory
Controller
0xB9h
1 0 1 1 1 0 0 1 Memory
Initialization
of
Integrated
Memory
Controller
0xBAh
1 0 1 1 1 0 1 0 Memory
Initialization
of
Integrated
Memory
Controller
0xBBh
1 0 1 1 1 0 1 1 Memory
Initialization
of
Integrated
Memory
Controller
0xBCh
1 0 1 1 1 1 0 0 Memory
Initialization
of
Integrated
Memory
Controller
0xBDh
1 0 1 1 1 1 0 1 Memory
Initialization
of
Integrated
Memory
Controller
0xBEh
1 0 1 1 1 1 1 0 Memory
Initialization
of
Integrated
Memory
Controller
0xBFh
1 0 1 1 1 1 1 1 Memory
Initialization
of
Integrated
Memory
Controller
PCI Bus
0x50h
0 1 0 1 0 0 0 0 Enumerating
PCI
buses
0x51h
0 1 0 1 0 0 0 1 Allocating
resources
to
PCI
buses
0x52h
0 1 0 1 0 0 1 0 Hot
Plug
PCI
controller
initialization
0x53h
0 1 0 1 0 0 1 1 Reserved
for
PCI
bus
0x54h
0 1 0 1 0 1 0 0 Reserved
for
PCI
bus
0x55h
0 1 0 1 0 1 0 1 Reserved
for
PCI
bus
USB
0x56h
0 1 0 1 0 1 1 0 Initializing
USB
host
controllers
0x57h
0 1 0 1 0 1 1 1 Detecting
USB
devices
0x58h
0 1 0 1 1 0 0 0 Resetting
USB
bus
