Reference Guide

ZCOM Subsystem
Introduction
Chapter 112
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