TOPS-10/TOPS-20 DDT11 Manual

This document is the user manual for the DDT11 symbolic debugging program, which runs on TOPS-10 and TOPS-20 host systems. The program is designed for system support specialists to diagnose and fix errors in nodes and front ends, make modifications to running software, and examine system images, dumps, and memory.

The manual covers:

• Operating Environments: Usage on ANF-10 nodes, IBMCOM front ends, DECnet-10/20 (MCB/DN20) front ends, and RSX-20F front ends.
• Core Functionality: How to examine and deposit memory, load and save symbols, start execution, monitor specific memory locations for changes, and dump memory to files.
• Advanced Features: Searching for patterns in memory, utilizing command files with tags and macro-style arguments, and writing binary files.
• Command Reference: Appendices providing a comprehensive summary of DDT11 commands and input specification switches.