Texas Instruments 990 User Manual page 3

Preface
Preface
This manual describes the operation of the Texas Instruments DXIO
HDLC Communications Package. The manual is primarily intended
for systems personnel responsible for constructing the
communications network and for applications programmers
responsible for developing programs that utilize th~
communications package. The manual assumes that the reader is
familiar with the DXIO and TX5 operating systems.
The protocols used by the communications package are based on,
and are compatible with, the CCITT X.25 and high-level data link
. control (HDLC) recommendations. These protocols are transparent
to users of the communications package.
Tors manual is organized into five sections and four appendixes
as follows:
Section
1 Introduction Provides an overview of the
communications package; describes the significant
hardware and software features and possible network
configurations; explains principles of system
operation.
2 Planning the Network Provides the background
information necessary for constructing and
operating the communications package; describes in
detail the prerequisites for constructing the
network.
3 Constructing and Activating the Network - Describes
the procedures for constructing the communications
package at the primary and secondary stations and
for activating the network.
4 Applications Programming Provides information
necessary to write applications programs that use
the communications package.
5 Applications Utilities - Describes the applications
utilities available for generating, processing,
downloading, and debugging programs that execute in
secondary stations.
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