Discfile Control

This manual covers the Digital Equipment Corporation (DEC) Discfile Control Type 270, which is designed for use with the Discfile 5022 and the PDP-6 processor. The document is structured as follows:

• General Description: Provides system application details, specifications, and physical configuration.
• System Logic: Details the interface signals, command logic, file-control logic, and data logic.
• System Operating Sequences: Outlines step-by-step procedures for address transmission, reading, writing, and read-compare operations.
• Maintenance: Includes information on preventive maintenance, calibration, troubleshooting, and lists of recommended spare parts.
• Installation and Preoperational Checkout: Explains site selection, unpacking, inspection, and cable connections.
• Programming: Details instruction coding for the 270 control and provides programming examples.
• Signal Glossary: A comprehensive alphabetical reference for system signals, logic levels, and flip-flops.
• Engineering Drawings: Contains references for logic diagrams, flow diagrams, and schematics.