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Table 75. Diagnostic Led Post Code Decoder - Intel S3420GPLC - Server Board Motherboard Specification

Product specification
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Appendix C: POST Code Diagnostic LED Decoder
Diagnostic LED Decoder
Checkpoint
Upper Nibble
MSB
8h
4h
2h
LED
#7
#6
#5
Host Processor
0x04h
X
X
X
0x10h
X
X
X
0x11h
X
X
X
0x12h
X
X
X
0x13h
X
X
X
Chipset
0x21h
X
X
O
Memory
0x22h
X
X
O
0x23h
X
X
O
0x24h
X
X
O
0x25h
X
X
O
0x26h
X
X
O
0x27h
X
X
O
0x28h
X
X
O
PCI Bus
0x50h
X
O
X
0x51h
X
O
X
0x52h
X
O
X
0x53h
X
O
X
0x54h
X
O
X
0x55h
X
O
X
0x56h
X
O
X
0x57h
X
O
X
USB
0x58h
X
O
X
0x59h
X
O
X
ATA/ATAPI/SATA
0x5Ah
X
O
X
0x5Bh
X
O
X
0x5Ch
X
O
X
0x5Dh
X
O
X
SMBUS
0x5Eh
X
O
X
0x5Fh
X
O
X
Local Console
0x70h
X
O
O
0x71h
X
O
O
0x72h
X
O
O
Remote Console
120

Table 75. Diagnostic LED POST Code Decoder

O = On, X=Off
Lower Nibble
LSB
1h
8h
4h
2h
1h
#4
#3
#2
#1
#0
X
X
O
X
X
O
X
X
X
X
O
X
X
X
O
O
X
X
O
X
O
X
X
O
O
X
X
X
X
O
X
X
X
O
X
X
X
X
O
O
X
X
O
X
X
X
X
O
X
O
X
X
O
O
X
X
X
O
O
O
X
O
X
X
X
O
X
X
X
X
O
X
X
X
O
O
X
X
O
X
O
X
X
O
O
O
X
O
X
X
O
X
O
X
O
O
X
O
O
X
O
X
O
O
O
O
O
X
X
X
O
O
X
X
O
O
O
X
O
X
O
O
X
O
O
O
O
O
X
X
O
O
O
X
O
O
O
O
O
X
O
O
O
O
O
O
X
X
X
X
O
X
X
X
O
O
X
X
O
X
Intel order number E65697-010
Intel® Server Board S3420GP TPS
Early processor initialization (flat32.asm) where system BSP is selected
Power-on initialization of the host processor (Boot Strap Processor)
Host processor cache initialization (including AP)
Starting application processor initialization
SMM initialization
Initializing a chipset component
Reading configuration data from memory (SPD on FBDIMM)
Detecting presence of memory
Programming timing parameters in the memory controller
Configuring memory parameters in the memory controller
Optimizing memory controller settings
Initializing memory, such as ECC init
Testing memory
Enumerating PCI buses
Allocating resources to PCI buses
Hot Plug PCI controller initialization
Reserved for PCI bus
Reserved for PCI bus
Reserved for PCI bus
Reserved for PCI bus
Reserved for PCI bus
Resetting USB bus
Reserved for USB devices
Resetting SATA bus and all devices
Detecting the presence of ATA device
Enable SMART if supported by ATA device
Reserved for ATA
Resetting SMBUS
Reserved for SMBUS
Resetting the video controller (VGA)
Disabling the video controller (VGA)
Enabling the video controller (VGA)
Description
Revision 2.4
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