Intel DX79TO Guida Utente Pagina 71

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Error Messages and Indicators
71
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 26. This code is useful for determining the point where an e
rror occurred
during the POST.
Figure 26. POST Code LED Display
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