DMR11 Synchronous Controller

This document provides comprehensive technical information for the DMR11 Synchronous Controller, a microprocessor-based communications controller used for high-performance data linking between VAX-11/780 or PDP-11 computers. The manual covers:

• System Overview: General description, operation, and specifications.
• Installation: Procedures for unpacking, hardware configuration (microprocessor and line unit), cabling, and system testing.
• Programming: Details on the command structure, input/output command protocols, modem control, and data link functions.
• Service: Maintenance philosophy, diagnostic procedures, error reporting, and base table layout for troubleshooting.

It is intended for service personnel and systems programmers to facilitate the proper installation and maintenance of the DMR11 system.