Appendix B: EEPROM-Resident Bugcheck and Event Logs

B.2 BUGCHECK PACKETS

Bugchecks are the result of some software-detected errors. For example, a hardware failure or an internal system consistency failure may cause a bugcheck. These events cause bugcheck packets to be written to EEPROM.

The most important information within the packet is the error code. The more common bugcheck codes are listed in Table B-1. A full listing of all possible codes is not provided: they are typically associated with firmware or product development and are not expected once the product is released. Analysis of the other information saved within an EEPROM bugcheck packet requires the in- depth firmware knowledge to interpret and/or attempt to determine the actual cause.

Table B–1 Bugcheck Packet Error Codes (Bytes 9 – 10)

Error Code

Meaning and Possible Cause

E204h

Unexpected Timer 2 Interrupt – Possible Tape Drive Controller PCB fault

EE01h

Spurious Non-Maskable Interrupt – Possible Tape Drive Controller PCB fault

EE02h

Spurious 8524 Timer Interrupt – Possible Tape Drive Controller PCB fault

EE03h

Spurious Level 5 Interrupt (GPSP) – Possible Tape Drive Controller PCB fault

EE04h

Spurious Drive Comm Interrupt – Possible Tape Drive Controller PCB fault

EE05h

Spurious Loader Comm Interrupt – Possible Tape Drive Controller PCB fault

EE06h

Spurious Diag Comm Interrupt – Possible Tape Drive Controller PCB fault

EE08h

Watch Dog Expiration – SCSI bus may have lost termination, or Tape Drive

 

Controller PCB is constantly receiving non-tape commands.

EE09h

Spurious Power Fail Signal Received – Possible Power Supply fault.

EE0Dh

Spurious Level 6 Interrupt (GPSP) – Possible Tape Drive Controller PCB fault

F202h

Loader Time-Out – Possible Media Loader fault

 

 

B.2.1 POST Failure Packets

POST failure packets are stored whenever the Power On Self Test logic detects a failure of any kind. Each failure is encoded as a 4-byte vector. In some cases, multiple vectors may be stored.

If logging of POST failures occurs, contact a service representative.

B-2

Quantum DLT 7000 Tape System

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Quantum Instruments DLT 7000 Bugcheck Packets, Post Failure Packets, Appendix B EEPROM-Resident Bugcheck and Event Logs
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DLT 7000 specifications

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