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BC 3030
Appendix A - BIOS Error Beep Codes
During the POST (Power On Self Test) routines, which are performed each time the system is booted, errors may occur. Nonfatal errors are those which, in most cases, allow the system to continue the boot process. The error messages normally appear on the screen. See Appendix B for BIOS Error Messages.
Fatal errors are those which will not allow the system to continue the boot procedure. If a fatal error occurs, consult Cubix Technical Support for possible repairs. These fatal errors are usually communicated through a series of audible beeps. The number of beeps corresponds to the error number in the following list. All errors except of #8 are fatal errors.
1 Beep - Refresh Failure
The memory refresh circuitry of the motherboard is faulty.
2 Beeps - Parity Error
A parity error was detected in the base memory (the first block of 64 KB) of the system.
3 Beeps - Base 64 KB Memory Failure
A memory failure occurred within the first 64 KB of memory.
4 Beeps - Timer Not Operational
Timer #1 on the system board has failed to function properly.
5 Beeps - Processor Error
The CPU (Central Processing Unit) on the system board has generated an error.
6 Beeps - 8042 Gate A20 Failure
The keyboard controller (8042) contains the Gate A20 switch which allows the CPU to operate in virtual mode. This error message indicates that the BIOS is not able to switch the CPU into protected mode.
7 Beeps - Processor Exception Interrupt Error
The CPU on the motherboard has generated an exception interrupt.
8 Beeps - Display Memory Read/Write Error
The system video adapter is either missing or its memory is faulty. This is not a fatal error.
9 Beeps - ROM Checksum Error
The ROM checksum value does not match the value encoded in the BIOS.
10 Beeps - CMOS Shutdown Register Read/Write Error
The shutdown register for the CMOS memory has failed.
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by Cubix Corp., Carson City, NV, USA.
