Intel S2600CP Technical Product Specification - Page 215

Intel® Server Board S2600CP and Server System P4000CP TPS Appendix E: POST Code Diagnostic LED Decoder In the following example, the BIOS sends a value of ACh to the diagnostic LED decoder. The LEDs are decoded as follows: Table 154. POST Progress Code LED Example Upper Nibble AMBER LEDs Lower Nibble GREEN LEDs LEDs MSB LED #7 LED #6 LED #5 LED #4 LED #3 LED #2 LED #1 LSB LED #0 8h 4h 2h 1h 8h 4h 2h 1h Status ON OFF ON OFF ON ON OFF OFF Results 1 0 1 Ah 0 1 1 0 Ch 0 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 155. 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 156. 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) 36h 0 0 1 1 0 1 1 0 CPU PEIM (CPU SMM Init) 4Fh 0 1 0 0 1 1 1 1 Dxe IPL started DXE Phase 60h 0 1 1 0 0 0 0 0 DXE Core started 61h 0 1 1 0 0 0 0 1 DXE NVRAM Init 62h 0 1 1 0 0 0 1 0 SB RUN Init 63h 0 1 1 0 0 0 1 1 Dxe CPU Init Revision 1.2 199 Intel order number G26942-003