SWAN Concentrator and WAN Subsystem Troubleshooting Guide

Installing and Using the SWAN Tools

SWAN Concentrator and WAN Subsystem Troubleshooting Guide—426992-008

5-7

Bus Error Dumps

A sample stack frame shows the output of QUEST with a dump file caused by a bus or

address error.

-->quest -is dumpfile

The output shows that the Instruction at Address 0x0063cb1a caused the bus error

exception.

Running Task ID...............[0x00980000]9961472

Task Name.....................[444c 4331]DLC1

Stack Pointer (A7)............0x005c1f60

Dump due to Exception

Format $C-BERR Stack for Prefetches and Operands

Frame Pointer (A6)............[0x005c1fc4]6037444

Return Address................[0x004031fe]4207102

Saved Register................[D0][0x14000240]335544896

[D1][0x004b2400]4924416

[A0][0x41414141]1094795585

[A1][0x005c2048]6037576

Status Register...............[0x2400]0010010000000000

Return Program Counter........0x0063cb1a

Vector offset.................0xc008 (Bus Error)

Faulted Address...............0x41414145

DBUF..........................0xff414141

Current instruction PC........0x0063cb1a

Internal Transfer Count reg...0x000c

Special Status Word..........[0x0045]0000000001000101