Manual Number: 40110-005-2
Page 81
Appendix A: BIOS Messages
BIOS Beep Codes
Errors may occur during the POST (Power-On Self Test) routines which are performed each time
the system is powered on.
Nonfatal errors are those which, in most cases, allow the system to continue the bootup process.
The error message normally appears on the screen. See BIOS Error Messages later in this section
for descriptions of these messages.
Fatal errors are those which will not allow the system to continue the bootup procedure.
These fatal errors are usually communicated through a series of audible beeps. Each error message
has its own specific beep code, defined by the number of beeps following the error detection. The
following table lists the errors which are communicated audibly.
All errors listed, with the exception of #8, are fatal errors.
Beep Count
Message
Description
1
Refresh Failure
The memory refresh circuitry of the processor
board is faulty.
2
Parity Error
A parity error was detected in the base memory
(the first block of 64KB) of the system.
3
Base 64KB
A memory failure occurred within the
Memory Failure
first 64KB of memory.
4
Timer Not Operational
A memory failure occurred within the first 64KB
of memory, or Timer #1 on the processor board has
failed to function properly.
5
Processor Error
The CPU (Central Processing Unit) on the
processor board has generated an error.
6
8042 Gate A20 Failure The keyboard controller (8042) contains the Gate
A20 switch which allows the CPU to operate in
protected mode. This error message means that the
BIOS is not able to switch the CPU into protected
mode.
Summary of Contents for SB686P Series
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