Table of Contents
Advertisement
BEEP CODES
Beep codes can signify a terminal error. If the BIOS detects
a terminal error condition, it sounds an error beep code,
halts the POST, and attempts to display a port 80h code on
the POST card's LED display. A table of beep codes
follows.
BEEPS
1
1-2
1-2-2-3
1-3-1-1
1-3-1-3
1-3-4-1
1-3-4-3
1-4-1-1
2-1-2-3
2-2-3-1
Beep Codes
80H CODE
DESCRIPTION
B4h
One short beep before boot
98h
Search for options ROMs
16h
BIOS ROM checksum
20h
Test DRAM refresh
22h
Test 8742 keyboard controller
3Ch
RAM failure on address line xxxx
2Eh
RAM failure on data bits xxxx of
low byte of memory bus
30h
RAM failure on data bits xxxx of
high byte of memory bus
46h
Check ROM copyright notice
58h
Test for unexpected interrupts
System Board, Connectors, and Error Messages D-11
Advertisement
Table of Contents
