C - system bios messages, Bios beep codes, System bios messages – Rockwell Automation 6180 Processor Board (for 6180 Industrial Computers) User Manual
Page 34: Appendix

Appendix
C
System
BIOS Messages
The following beep codes may be heard while the Setup program
saves changes to CMOS RAM.
Beeps
Indicates:
Description
1
Refresh Failure
Memory refresh circuitry on the baseboard is
faulty.
2
Parity Error
Will not occur (parity is not supported)
3
Base 64 KB
Memory Failure
Memory failure in the 1st 64 KB.
4
Timer Not Operational
Memory failure in the 1st 64 KB of memory, or
Timer 1 on the processor board is not
functioning.
5
Processor Error
CPU generated an error.
6
8042 - Gate A20 Failure
Keyboard controller (8042) may be faulty.
The BIOS cannot switch to protected mode.
7
Processor Exception
Interrupt Error
CPU generated an exception interrupt.
8
Display Memory
Read/Write Error
Video adapter is either missing or memory is
faulty. This is not a fatal error.
9
ROM Checksum Error
ROM checksum value does not match the
value encoded in BIOS.
10
CMOS Shutdown
Register
(Read/Write Error)
Shutdown register for CMOS RAN failed.
BIOS Beep Codes