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Chapter 3
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:
Super Voyager VLB-III ISA Motherboard User's Guide
If...
the error occurs
before the
display device
is initialized,
the error occurs
after the
display device
is initialized,
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.
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