Intel S5000XAL User Manual

Page of 113
 Appendix C: POST Code Diagnostic LEDs 
Intel
®
 Server Board S5000PAL / S5000XAL TPS 
 
 Revision 
1.4 
Intel order number: D31979-007 
102 
Table 46. Diagnostic LED POST Code Decoder 
Diagnostic LED Decoder 
G=Green, R=Red, A=Amber 
Checkpoint 
MSB 
 
 
LSB 
Description  
Host Processor 
0x10h OFF OFF 
OFF R Power-on 
initialization of the host processor (bootstrap processor) 
0x11h OFF OFF 
OFF A Host 
processor 
cache initialization (including AP) 
0x12h OFF OFF G  R Starting 
application processor initialization 
0x13h OFF OFF G  A SMM 
initialization 
Chipset 
0x21h 
OFF 
OFF 
Initializing a chipset component 
Memory 
0x22h OFF 
OFF 
OFF 
Reading 
configuration data from memory (SPD on DIMM) 
0x23h 
OFF 
OFF 
Detecting presence of memory 
0x24h 
OFF 
OFF  Programming timing parameters in the memory controller 
0x25h 
OFF 
Configuring memory parameters in the memory controller 
0x26h OFF G A 
OFF 
Optimizing 
memory controller settings 
0x27h OFF G A G 
Initializing 
memory, such as ECC init 
0x28h G 
OFF 
OFF 
Testing 
memory 
PCI Bus 
0x50h 
OFF 
OFF 
Enumerating PCI busses 
0x51h 
OFF 
OFF 
Allocating resources to PCI busses 
0x52h 
OFF 
Hot Plug PCI controller initialization 
0x53h  
OFF 
Reserved for PCI bus 
0x54h  
OFF 
OFF 
Reserved for PCI bus 
0x55h  
OFF 
OFF 
Reserved for PCI bus 
0x56h  
OFF 
Reserved for PCI bus 
0x57h 
OFF 
Reserved for PCI bus 
USB 
0x58h 
OFF 
Resetting USB bus 
0x59h 
OFF 
Reserved for USB devices 
ATA / ATAPI / SATA 
0x5Ah 
Resetting PATA / SATA bus and all devices 
0x5Bh 
Reserved for ATA 
SMBUS 
0x5Ch G A 
OFF 
Resetting 
SMBUS 
0x5Dh 
OFF 
Reserved for SMBUS 
Local Console 
0x70h 
OFF 
Resetting the video controller (VGA) 
0x71h 
OFF 
Disabling the video controller (VGA) 
0x72h 
OFF 
Enabling the video controller (VGA) 
Remote Console 
0x78h 
Resetting the console controller 
0x79h 
Disabling the console controller 
0x7Ah 
Enabling the console controller 
Keyboard (PS2 or USB) 
0x90h 
OFF 
OFF 
Resetting the keyboard  
0x91h 
OFF 
OFF 
Disabling the keyboard