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Part 5. Troubleshooting

Chapter 10. Diagnosing and recovering from problems ......................... 10-1

Before you panic: some simple fixes ............................................................. 10-2

Quick problem solving chart .......................................................................... 10-6

Solving hardware and software problems ..................................................... 10-7

Solving hardware problems .................................................................. 10-7

Solving software problems .................................................................... 10-13

Solving modem problems ..................................................................... 10-15

Error codes and messages ............................................................................10-17

IBM Diagnostic Programs .............................................................................. 10-20

Recovering factory-installed programs and files ............................................ 10-22

Part 6. Technical reference

Appendix A. Specification tables ............................................................... A-1

Memory module placement ........................................................................... A-1

Memory map ..................................................................................................A-3

System input/output addresses ..................................................................... A-4

System interrupts ........................................................................................... A-6

DMA channel assignments ............................................................................A-7

Serial port addresses ..................................................................................... A-8

Connector functions .......................................................................................A-9

Appendix B. Modem information ............................................................... B-1

Modem features .............................................................................................B-1

Operating your modem ..................................................................................B-3

Using the Auto Answer feature ............................................................. B-3
Disabling Call Waiting ........................................................................... B-4

Modem commands ........................................................................................ B-5

Executing commands ........................................................................... B-5
Command format ..................................................................................B-5

AT commands .......................................................................................B-6

Detail for +MS Controls ........................................................................ B-9

Extended AT commands ......................................................................B-10

V.42bis commands ............................................................................... B-11