About The EIS Guide

This guide is intended for independent software vendors who are developing their own 3270 emulation client software to work with Microsoft® SNA Server. Before using it, you should be familiar with SNA Server concepts. It provides the following information:

Internal concepts of SNA Server that are required to integrate 3270 client software.
Definitions of the interfaces used by the client software to communicate with SNA Server components.
Information on using SNA Server's configuration and diagnostics features.
Instructions for compiling and linking the client software with the necessary SNA Server-supplied files.

This guide covers the following topics:

SNA Server Concepts: Introduces the key concepts used in Microsoft SNA Server that you need to consider when integrating client software.
The DL-BASE/DMOD Interface: Describes the interface that client programs use to communicate with the DL-BASE and explains the entry points available for use by clients.
The Function Management Interface: Explains the Function Management Interface (FMI), which consists of the messages and message sequences used for communications between the client and the local 2.1 node.
FMI Message Formats: Provides detailed information on the format of each of the FMI messages.
FMI Status, Error, and Sense Codes: Provides reference information on status and sense codes that are used in various FMI messages.
Configuration Information: Describes the mechanism used by clients to gain access to SNA Server configuration information and how to interpret and use this information.
Diagnostics: Describes the interfaces to the SNA Server message logging and tracing facilities and explains how client processes can use them.
Compiling and Linking with SNA Server: Explains how to include the required SNA Server header files and libraries when compiling and linking your client application and provides information on compiler flags to be used.
FMI Extension for the Windows Environment: Describes the FMI extension for the Microsoft® Windows® environment. This extension converts link status and error codes to a printable string.