Service Guide for Intel Server System H2000WP

Appendix C: LED Decoder
60 Intel
®
Server System H2000WP Family Service Guide
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