National Instruments GPIB-COM Preface

© National Instruments Corporation v GPIB-COM User Manual

Preface

Introduction to the GPIB-COM

The GPIB-COM is a high-performance talk/listen interface board that makes communication

possible between IEEE-488 devices and IBM personal computers and compatibles (hereafter

referred to as PCs) equipped with software that uses the serial ports.

Organization of This Manual

This manual is divided into the following sections:

Section One, Introduction, contains a brief description of the GPIB-COM including a listing of its

features, accessories, and components.

Section Two, Configuration and Installation, describes how to configure and install the GPIB-

COM into your system.

Section Three, Function Description, shows a block diagram of the GPIB-COM and describes the

functional components of the GPIB-COM.

Section Four, Running Diagnostic Tests, describes how to run the diagnostic tests that are shipped

with the GPIB-COM.

Section Five, Programming the GPIB-COM, presents a description of the GPIB-COM Serial Port

Emulator registers and information on programming the IBM serial adapter.

Appendix A, Specifications, lists the specifications of the GPIB-COM board.

Appendix B, Multiline Interface Command Messages, contains an ASCII chart and a list of the

corresponding GPIB messages.

Appendix C, Operation of the GPIB, describes GPIB terminology and protocol for users

unfamiliar with the GPIB.

Related Documents

The following documents contain information that may be helpful as you read this manual:

•ANSI/IEEE Std 488-1978, IEEE Standard Digital Interface for Programmable

Instrumentation

•IBM Options and Adapters Manual

•IBM PC Technical Reference Manual

•IBM Disk Operating System Manual

•INS8250A Data Sheet, National Semiconductor

Contents

Main Page Page FCC/DOC Radio Frequency Interference Compliance Preface Introduction to the GPIB-COM Organization of This Manual Related Documents Abbreviations Used in This Manual Contents Page Figures Tables Section One Introduction GPIB-COM Characteristics What Your Kit Should Contain Optional Equipment Page Page Switch and Jumper Settings Base I/O Address and Interrupt Selection Talk/Listen Modes Talk/Listen Address and Special Function Selection Page Installation Special Considerations When Using the GPIB-COM filename Page Function Description Section Three GPIB-COM User Manual 3-2 National Instruments Corporation Figure 3-1 shows a block diagram of the GPIB-COM. GPIB Figure 3-1. Block Diagram of GPIB-COM GPIB-COM Components Page Section Four Running Diagnostic Tests The GPIB-COM Test Commands -1 printer test -2 plotter test -c change COM configuration -q quit Section Five Programming the GPIB-COM The GPIB-COM Registers Transmitter Holding Register Receive Buffer Register Divisor Latch Least Significant Byte (LSB) Register Divisor Latch Most Significant Byte (MSB) Register Interrupt Enable Register Page Interrupt Identification Register Line Control Register Page Modem Control Register Page Line Status Register Page Modem Status Register Page Programming the Serial Adapter Polling Method Interrupt-Driven Method The GPIB-COM Controller Function Appendix A Specifications Page Multiline Interface Messages Hex Oct Dec ASCII Msg Hex Oct Dec ASCII Msg Message Definitions Multiline Interface Messages Hex Oct Dec ASCII Msg Hex Oct Dec ASCII Msg Appendix C Operation of the GPIB History of the GPIB Types of Messages Talkers, Listeners, and Controllers System Controller and Active Controller GPIB Signals Appendix C Operation of the GPIB National Instruments Corporation C-3 GPIB-COM User Manual Figure C-1 shows the arrangement of these signals on the GPIB cable connector. Data Lines Handshake Lines NRFD (not ready for data) NDAC (not data accepted) Page Page Page Configuration Restrictions User Comment Form