IBV11-A LIS11/Instrument Bus Interface User's Manual

This document is the user's manual for the IBV11-A, an interface option designed by Digital Equipment Corporation (DEC). Its primary purpose is to connect the LSI-11 microcomputer bus to the IEEE Standard 488-1975 "instrument bus" (also known as GPIB or HP-IB).

The IBV11-A enables LSI-11 based systems to act as a controller-in-charge, allowing them to control, communicate with, and acquire data from up to 15 programmable instruments compliant with the IEEE 488 standard, thereby facilitating automated measurement and control systems. Key features include PDP-11 software compatibility, user-configurable device and interrupt addresses, and support for the full range of IEEE 488 bus signal functions and commands.

The manual provides comprehensive guidance on:

• General Information: Introduction to LSI-11 systems, the IBV11-A interface, and the IEEE 488 instrument bus, including its physical structure and device functions (talkers, listeners, controllers).
• Specifications: Detailed hardware (electrical, mechanical, environmental) and programming specifications. This includes descriptions of the Instrument Bus Status (IBS) and Instrument Bus Data (IBD) registers, interrupt vectors, and the various controller-in-charge command groups (Addressed, Universal, Listener Address, Talker Address, and Secondary Commands).
• Installation: Minimum LSI-11 system hardware and software requirements, procedures for configuring the IBV11-A module via onboard switches, installation into the LSI-11 backplane, and connecting to external instruments using specific cables and linear/star configurations.
• Programming Examples: Illustrative assembly language code and flowcharts demonstrating how the LSI-11 can communicate with both listener and talker devices on the instrument bus.
• Technical Description: An overview of the IBV11-A's functional logic blocks and internal integrated circuits (ICs) for LSI-11 bus interfacing and instrument bus control.
• Maintenance: Information on available diagnostic software for testing the IBV11-A module.

In essence, the document serves as a complete guide for users to install, program, and operate the IBV11-A to integrate LSI-11 microcomputers into IEEE 488-compliant instrumentation systems.