Product Service Guide

54 Intel
®
Server Board S5500BC User’s Guide
0x10h X XXO XXXXPower-on initialization of
the host processor
(bootstrap processor)
0x11h X XXO XXXOHost processor cache
initialization (including AP)
0x12h X X X O X X O X Starting application
processor initialization
0x13h X X X O X X O O SMM initialization
Chipset
0x21h X XOX XXXOInitializing a chipset
component
Memory
0x22h X X O X X X O X Reading configuration
data from memory (SPD
on DIMM)
0x23h X X O X X X O O Detecting presence of
memory
0x24h X X O X X O X X Programming timing
parameters in the memory
controller
0x25h X X O X X O X O Configuring memory
parameters in the memory
controller
0x26h X X O X X O O X Optimizing memory
controller settings
0x27h X XOX XOOOInitializing memory, such
as ECC init
0x28h X XOX OXXXTesting memory
Table 8. Diagnostic LED POST Code Decoder