ACC Utilities Reference Guide

TTGEN - ZCOM System Table Generator
Introduction
Chapter 228
Introduction
The program TTGEN creates the file used to initialize and start up the
run-time ZCOM sub-system. TTGEN reads an ascii configuration file
that contains the details of the network structure and generates a binary
memory image file to be used by ZMON. The file structure is detailed
under “Tables and Data Structures” in the Multi-protocol ACC
Programmer’s Reference Guide. ZMON reads the memory image file and
sets up pointers for the ZCOM drivers, indicating where the tables lie in
memory. ZMON also initializes all the buffers.
Figure 2-1 Memory Image File Format
Figure 2-2 What ZCOM Adds to the Memory Image File Format
The following discussion of these areas is intended only as an overview
and is not comprehensive. For more detailed information, see the section
“Tables and Data Structures,” in the Multiproduct ACC Programmer’s
Reference Guide.
ZCOM System Hearder
Node Entries
ZLU Tables
Logical Terminal Tables
Physical Terminal Tables
Interface Tables
Response Records
Queues
Buffer Pool