Hardware Monitor Setup 4-31
BIO
S
Se
tu
p
Hardware Monitor Setup
This setup describes the current system status detected by the hardware monitor
sensor. The status shown on screen will include:
t
Current CPU Temperature (Generally indicates the surface
temperature of the SBC) and the Basic Critical Temperature (BCT),
t
Current CPU Fan Speed, and
t
System operating voltages including
Vcore
,
Vtt
,
Vio
,
+5V
,
+12V
,
-12V
, and
-5V
.
BIOS POST Check Point List
The AMI BIOS provides all IBM standard Power On Self Test (POST) routines as
well as enhanced AMI BIOS POST routines. The POST routines support CPU
internal diagnostics. The POST checkpoint codes are accessible via the
Manufacturing Test Port (I/O port 80h).
Whenever a recoverable error occurs during the POST, the system BIOS will
display an error message explaining the problem in detail so that the problem can
be corrected.
During the POST, the BIOS signals a checkpoint by issuing one code to I/O address
80h. This code can be used to establish the status of the BIOS power-on sequence
and what test is currently being performed. This is done to help troubleshoot a
faulty system board.
If the BIOS detects a terminal error condition, it will halt the POST process and
attempt to display the checkpoint code written to I/O address port 80h. If the
system hangs before the BIOS detects the terminal error, the value at port 80h will
be the last test performed. In this case, the terminal error cannot be displayed on
the screen. The following POST checkpoint codes are valid for all AMI BIOS
products with a core BIOS date of 07/15/95 version 6.27 (Enhanced).
