vi
Solving software problems ...................................................................8-13
Solving modem problems .....................................................................8-15
Error codes and messages ...........................................................................8-17
IBM Diagnostic Programs ..............................................................................8-20
Appendix A. Specification tables ...............................................................A-1
Memory module placement ...........................................................................A-1
Memory map .................................................................................................A-2
System input/output addresses .....................................................................A-3
System interrupts ..........................................................................................A-5
DMA channel assignments ............................................................................A-6
Serial port addresses ....................................................................................A-7
Connector functions ......................................................................................A-8
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
Modem response codes ................................................................................B-12
S registers .....................................................................................................B-13
Appendix C. Monitor terminology ..............................................................C-1
Index .............................................................................................................I-1