Intel DZ68BC Product Guide - Page 73
Port 80h POST Codes, POST Code LED Display - error code
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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 31. This code is useful for determining the point where an error occurred during the POST. Figure 31. POST Code LED Display 73
Error Messages and Indicators
73
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 31.
This code is useful for determining the point where an error occurred
during the POST.
Figure 31.
POST Code LED Display