Intel WX58BP Manual Do Utilizador
Intel Desktop Board WX58BP Technical Product Specification
66
4.4
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. This code is useful for determining the point where an error occurred.
port 80h. If the POST fails, execution stops and the last POST code generated is left at
port 80h. This code is useful for determining the point where an error occurred.
Displaying the POST codes requires a PCI bus add-in card, often called a POST card.
The POST card can decode the port and display the contents on a medium such as a
seven-segment display.
The POST card can decode the port and display the contents on a medium such as a
seven-segment display.
NOTE
You must install the POST card in PCI bus connector 1.
The following tables provide information about the POST codes generated by the
BIOS:
Table 33 lists the Port 80h POST code ranges.
Table 34 lists the Port 80h POST codes themselves.
Table 35 lists the Port 80h POST sequence.
BIOS:
Table 33 lists the Port 80h POST code ranges.
Table 34 lists the Port 80h POST codes themselves.
Table 35 lists the Port 80h POST sequence.
NOTE
In the tables listed previously, all POST codes and range values are listed in
hexadecimal.
hexadecimal.
Table 33. Port 80h POST Code Ranges
Range Category/Subsystem
00 – 0F
Debug codes: Can be used by any PEIM/driver for debug.
10 – 1F
Host Processors: 1F is an unrecoverable CPU error.
20 – 2F
Memory/Chipset: 2F is no memory detected or no useful memory detected.
30 – 3F
Recovery: 3F indicated recovery failure.
40 – 4F
Reserved for future use.
50 – 5F
I/O Buses: PCI, USB, ATA, and so forth. 5F is an unrecoverable error. Start with PCI.
60 – 6F
Reserved for future use (for new buses).
70 – 7F
Output Devices: All output consoles. 7F is an unrecoverable error.
80 – 8F
Reserved for future use (new output console codes).
90 – 9F
Input devices: Keyboard/Mouse. 9F is an unrecoverable error.
A0 – AF
Reserved for future use (new input console codes).
B0 – BF
Boot Devices: Includes fixed media and removable media. BF is an unrecoverable error.
C0 – CF
Reserved for future use.
D0 – DF
Boot device selection.
E0 – FF
E0 – EE: Miscellaneous codes. See Table 34.
EF: boot/S3 resume failure.
F0 – FF: FF processor exception.
EF: boot/S3 resume failure.
F0 – FF: FF processor exception.