User`s guide

DC 900-1340I 45
Chapter
3
BSC 3270 DLI Functions
Note
In this chapter, the DLI API interface applies 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
Interface)).
Note
This chapter, along with Chapter 4 and Appendix A, should be
read by programmers who are interfacing an application program
to a BSC 3270 environment. If you are programming
BSC 2780/3780, refer to Chapter 5, Chapter 6, and Appendix B.
This chapter describes how to use the data link interface (DLI) functions to write client
applications interfacing to the Freeway BSC 3270 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 3.1.
The following might be helpful references while reading this chapter:
• Section 3.2 compares a typical sequence of DLI function calls using blocking ver-
sus non-blocking I/O.