Amibios Power-On Self Test - American Megatrends Super Voyager LPX User Manual

5AMIBIOS Power-On Self Test

AMIBIOS Power-On Self Test
AMIBIOS provides all IBM-standard POST routines as well as
enhanced AMIBIOS POST routines and CPU internal diagnostics.
AMIBIOS POST codes can be accessed via the Manufacturing Test Port
(I/O Port 80h). AMIBIOS POST checkpoint codes are described in the
AMIBIOS Technical Reference.
POST Phases
When the system is powered on, the AMIBIOS executes POST, which
has two phases:
• System Test and Initialization (test and initialize motherboards for
normal operations), and
• System Configuration Verification (compare defined configuration
with there hardware actually installed).
AMIBIOS Error Reporting
The AMIBIOS performs diagnostic when the system is powered up.
Error s are reported in one of two ways:
If...
the error occurs before the
display device is initialized,
the error occurs after the
display device is initialized,
Chapter 4 VGA BIOS
138
Then...
a series of beeps sound. Beep codes indicate that a
fatal error has occurred. The AMIBIOS Beep Codes
are described on the next page.
the error message is displayed. Displayed error
messages are explained below. A prompt to press
<F1> can also appear.