Pathway/iTS TCP and Terminal Programming Guide

Compaq NonStop™ Pathway/iTS TCP and Terminal Programming Guide—426751-001

1-1

Introduction to TCP and Terminal

Application Programming

This section introduces Pathway transaction processing applications, which you write

and run with the assistance of the NonStop™ Transaction Services/MP

(NonStop™ TS/MP) and Compaq NonStop™ Pathway/iTS software. The emphasis of

this section is on applications that include SCREEN COBOL requesters for use with

terminals or intelligent devices.

Table 1-1. Task and Manual Correspondences

If Your Application Includes… You Need… To Perform the Following…

SCREEN COBOL requesters Section 2 Design an application including

SCREEN COBOL requesters

Section 3 Handle programming for specific

terminals, terminal emulators,

intelligent devices, or simulated devices

Section 4 Write user conversion procedures that

make custom validation checks or data

conversions

Section 5 Manage transactions with the Compaq

Transaction Management Facility

(TMF)

Section 6 Use the Pathway/iTS intelligent device

support (IDS) facility

Section 7 Accept and reply to unsolicited

messages from Guardian operating

environment processes outside the

Pathway environment

Section 8 Process double-byte character sets

Section 9 Set device-dependent functions with

SETMODE calls or perform device-

dependent I/O operations with

CONTROL calls

Section 10 Handle errors returned to a SCREEN

COBOL requester program

Appendix A Use the MAKEUL macro for creating

the native user library and facilitating

pTAL compilation