Intel DP55KG Product Guide - Page 75
Port 80h POST Codes, POST Code LED Display
UPC - 735858205979
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Error Messages and Indicators Port 80h POST Codes During the POST, the BIOS generates diagnostic progress codes (POST codes) to I/O port 80h. If the POST fails, execution stops and the last POST code generated is left at port 80h and displayed on the Desktop Board's seven-segment LED display shown in Figure 34. This code is useful for determining the point where an error occurred during the POST. Figure 34. POST Code LED Display 75
Error Messages and Indicators
75
Port 80h POST Codes
During the POST, the BIOS generates diagnostic progress codes (POST codes) to I/O
port 80h.
If the POST fails, execution stops and the last POST code generated is left
at port 80h and displayed on the Desktop Board’s seven-segment LED display shown
in Figure 34.
This code is useful for determining the point where an error occurred
during the POST.
Figure 34.
POST Code LED Display