Datasheet

Appendix E: POST Code Diagnostic LED Decoder Intel® Server Board S2600CW Family TPS
Revision1.11
176
Table 93. POST Progress Code LED Example
LEDs
Upper Nibble AMBER LEDs Lower Nibble GREEN LEDs
MSB LSB
LED #7 LED #6 LED #5 LED #4 LED #3 LED #2 LED #1 LED #0
8h 4h 2h 1h 8h 4h 2h 1h
Status ON OFF ON OFF ON ON OFF OFF
Results
1 0 1 0 1 1 0 0
Ah Ch
Upper nibble bits = 1010b = Ah; Lower nibble bits = 1100b = Ch; the two are concatenated as ACh.
The following table provides a list of all POST progress codes.
Table 94. POST Progress Codes
Checkpoint
Diagnostic LED Decoder
Description
1 = LED On, 0 = LED Off
Upper Nibble Lower Nibble
MSB LSB
8h 4h 2h 1h 8h 4h 2h 1h
LED # #7 #6 #5 #4 #3 #2 #1 #0
SEC Phase
01h 0 0 0 0 0 0 0 1 First POST code after CPU reset
02h 0 0 0 0 0 0 1 0 Microcode load begin
03h 0 0 0 0 0 0 1 1 CRAM initialization begin
04h 0 0 0 0 0 1 0 0 Pei Cache When Disabled
05h 0 0 0 0 0 1 0 1 SEC Core At Power On Begin
06h 0 0 0 0 0 1 1 0 Early CPU initialization during Sec Phase
07h 0 0 0 0 0 1 1 1 Early SB initialization during Sec Phase
08h 0 0 0 0 1 0 0 0 Early NB initialization during Sec Phase
09h 0 0 0 0 1 0 0 1 End Of Sec Phase.
0Eh 0 0 0 0 1 1 1 0 Microcode Not Found.
0Fh 0 0 0 0 1 1 1 1 Microcode Not Loaded.
PEI Phase
10h 0 0 0 1 0 0 0 0 PEI Core
11h 0 0 0 1 0 0 0 1 CPU PEIM
15h 0 0 0 1 0 1 0 1 NB PEIM
19h 0 0 0 1 1 0 0 1 SB PEIM
MRC Process Codes – MRC Progress Code Sequence is executed. See Table 95.
PEI Phase continued…
31h 0 0 1 1 0 0 0 1 Memory Installed
32h 0 0 1 1 0 0 1 0 CPU PEIM (CPU Init)
33h 0 0 1 1 0 0 1 1 CPU PEIM (Cache Init)
34h 0 0 1 1 0 1 0 0 CPU PEIM (BSP Select)
35h 0 0 1 1 0 1 0 1 CPU PEIM (AP Init)