Standard bios post codes – Acer Altos G900 User Manual
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Standard BIOS post codes
The table below lists the port-80 codes displayed during the boot
process. A beep code is a series of individual beeps on the PC speaker,
each of equal length. The table describes the error conditions
associated with each beep code and the corresponding POST check
point code as seen by a port 80h card. For example, if an error occurs
at checkpoint 22h, the BIOS issues the beep code 1-3-1-1.
CP
Beeps
Reason
02
Verify real mode
04
Get processor type
06
Initialize system hardware
08
Initialize chipset registers with initial POST
values
09
Set in POST flag
0A
Initialize processor registers
0B
Enable processor cache
0C
Initialize caches to initial POST values
0E
Initialize I/O
0F
Initialize the local bus IDE
10
Initialize power management
11
Load alternate registers with initial POST
values
12
Restore processor control word during warm
boot
14
Initialize keyboard controller
AA G900 ug - EN.book Page 217 Wednesday, September 25, 2002 5:23 PM