ZCOM Subsystem

Introduction

Introduction

The ZCOM Subsystem consists of software and firmware that provide the base set of features for the ACC Product family. It consists of:

•HP-UX interface drivers that communicate with the ACC Mux cards

•the ZCOM Mux Kernel which is an operating system that is downloaded to the ACC Mux cards

•a set of daemon and utility programs that provide and facilitate access to the ZCOM Subsystem

•a library of routines that provides a comprehensive user interface to the ZCOM Subsystem.

The ZCOM Subsystem also provides a powerful framework for experienced data communication programmers to develop customized protocols for specialized data communication applications.

This document describes the programmatic interface to the ZCOM Subsystem. It describes the ZCOM Subsystem tables, buffers, and routines, and how they are used to achieve program-to-device and program-to-program communication. It also contains information required when writing application programs to take advantage of ACC product features, such as:

•remote node access

This feature allows programmatic requests to be routed to either a Mux card that is connected to the system on which the request is made, or to a program or Mux card on a remote system.

•dual interface Mux panel configurations

This feature allows two systems to connect to a single Mux panel.

•multiple protocol support

•true multi-thread programming support

•64-bit programming support

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Chapter 1