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Appendix A: POST Code LED Decoder
Intel® Server Board S5500WB TPS
Revision 1.9
Intel order number E53971-008
90
In the following example, the BIOS sends a value of ACh to the diagnostic LED decoder. The
LEDs are decoded as follows:
Table 56. 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.
Содержание S5500WB
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