User`s guide

DC 900-1340I 105

Chapter

BSC 2780/3780

DLI Functions

Note

In this chapter, the DLI functions apply to both a Freeway server

or an embedded ICP using DLITE. For the embedded ICP, also

refer to the user’s guide for your ICP and operating system (for

example, the ICP2432 User’s Guide for Windows NT (DLITE Inter-

face)).

Note

This chapter, along with Chapter 6 and Appendix B, should be

read by programmers who are interfacing an application program

to a BSC 2780/3780 environment. If you are programming

BSC 3270, refer to Chapter 3, Chapter 4, and Appendix A.

This chapter describes how to use the data link interface (DLI) functions to write client

applications interfacing to the Freeway BSC 2780/3780 protocol software. You should

be familiar with the concepts described in the Freeway Data Link Interface Reference

Guide; however, some summary information is provided in Section 5.1.

The following might be helpful references while reading this chapter:

• Section 5.2 compares a typical sequence of DLI function calls using blocking ver-

sus non-blocking I/O.