Memory map ....................................................................................................................................... A-1

System input/output addresses .......................................................................................................... A-2

System interrupts ................................................................................................................................ A-4

DMA channel assignments ................................................................................................................. A-5

Serial port addresses .......................................................................................................................... A-6

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

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

Operating your modem ....................................................................................................................... B-2

Using the Auto Answer feature ...................................................................................................... B-3

Disabling Call Waiting .................................................................................................................... B-3

Communication settings ................................................................................................................ B-4

Changing modem addresses ................................................................................................... B-4

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

Executing commands .................................................................................................................... B-5

Command format ........................................................................................................................... B-5

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

Extended AT commands ............................................................................................................... B-9

V.42bis commands ........................................................................................................................ B-10

Modem response codes ..................................................................................................................... B-11

S registers ........................................................................................................................................... B-14

Appendix C: Monitor terminology .......................................................... C-1

Index ...................................................................................................... I-1

Table of Contents