Intel SR1695GPRX1AC ユーザーズマニュアル
Appendix B: POST Code LED Decoder
Intel® Server System SR1695GPRX TPS
Revision
1.5
Intel order number: G11332-006
62
Table 62. POST Progress Code LED Example
LEDs
Upper Nibble LEDs
Lower Nibble 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.
as ACh.
Table 63. Dianostic LED POST Code Decoder
Checkpoint
Diagnostic LED Decoder
Description
O = On, X=Off
Upper Nibble
Lower Nibble
MSB
LSB
8h
4h
2h
1h
8h
4h
2h
1h
LED
#7 #6 #5 #4 #3 #2 #1 #0
Host Processor
0x04h
0x04h
X X X X X O X X Early processor initialization (flat32.asm) where system BSP is selected
0x10h
X X X O X X X X Power-on initialization of the host processor (Boot Strap Processor)
0x11h
X X X O X X X O Host 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 X O X X X X O
Initializing a chipset component
Memory
0x22h
0x22h
X X O X X X O X Reading configuration data from memory (SPD on FBDIMM)
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 X O X X O O O
Initializing memory, such as ECC init
0x28h
X X O X O X X X
Testing memory
PCI Bus
0x50h
0x50h
X O X O X X X X Enumerating PCI buses
0x51h
X O X O X X X O Allocating resources to PCI buses
0x52h
X O X O X X O X Hot Plug PCI controller initialization
0x53h
X O X O X X O O Reserved for PCI bus
0x54h X
O
X
O
X
O
X
X
Reserved for PCI bus
0x55h X
O
X
O
X
O
X
O
Reserved for PCI bus
0x56h X
O
X
O
X
O
O
X
Reserved for PCI bus
0x57h X
O
X
O
X
O
O
O
Reserved for PCI bus
USB
0x58h X O X O O X X X
Resetting USB bus
0x59h
X O X O O X X O
Reserved for USB devices
ATA/ATAPI/SATA
0x5Ah
0x5Ah
X O X O O X O X Resetting SATA bus and all devices
0x5Bh
X O X O O X O O Detecting the presence of ATA device
0x5Ch
X O X O O O X X Enable SMART if supported by ATA device