Intel DX79TO Guia do Utilizador descarregar pdf (Página 71)

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 26. This code is useful for determining the point where an e

rror occurred

during the POST.

Figure 26. POST Code LED Display

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 85 86

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Intel DX79TO Guia do Utilizador Página 71