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42 Intel NetStructure
®
MPCBL0001 High Performance Single Board Computer
Technical Product Specification
Hardware Management Overview
3.2.10 Port 80h POST Codes
When there is an FRB3 failure, the event message sent from the CPU Status sensor with sensor
type code 07 provides the last Port 80 code byte written by the BIOS. This information is contained
in Data Byte 3 of the event message.
Example:
To decode Port 80 data from SEL event when a board is booted without memory, refer to the
following method.
SEL EVENT - ID:0DD8(Tue Jan 25 18:45:20 2005) Gen:8E Type:07 No:50 Dir:6F D1:64 D2:6F
D3:E1
The values shown in bold above convey the following information:
• The sensor type is 07. This refers to the processor.
• Event data 1, bit 0-3 is 4. This refers to an FRB3/processor startup or initialization failure (the
CPU did not start).
• Event data 3 is E1. This refers to the last Port 80h POST codes before the board hangs.
Refer to the tables in Section 9.2 for descriptions of the Port 80h POST codes.
Note: At any time when a board hangs, you may also use an OEM IPMI command to query the Port 80
POST codes. For the command syntax, refer to Section 3.7.7, “Get Port80 Data” on page 50.
Table 9. CPU Failure Behavior
CPU Failure Detection CPU Identification Behavior
Operational Phase CPU0 CPU1 Board Power Status
CMM SEL
Event
Health LED
POST Normal Normal Bootable No Green
Fail Normal Stop Booting Yes Red
Normal Fail Stop Booting Yes Red
Fail Fail Stop Booting Yes Red
Runtime Normal Normal Keep Working No Green
Fail Normal Halt Yes Red
Normal Fail Halt Yes Red
Fail Fail Halt Yes Red