Master Drawing List

This document serves as the Master Drawing List for the Digital Equipment Corporation DP8-E Synchronous Modem Interface. It provides an engineering specification and technical documentation for the interface, which is designed to connect a PDP-8/E computer with various modems (such as Bell 201, 301, and 303 or equivalents).

Key components of the document include:

• Engineering Specifications: Detailed technical parameters, including transfer modes (full/half-duplex), character parameters, baud rates (up to 100,000 baud), power consumption, and modem compatibility.
• Programming Information: Bit assignments for status registers, access addresses, word counts, and instructions for controlling the interface, including "Transmit Go," "Receive Go," and diagnostic instructions.
• Hardware and Wiring: Technical schematics and wire tables for the M839 and M866 modules, including jumper configurations to customize the interface for specific operational requirements, modem types, and clock phases.
• Connection Data: Pin assignments for connectors and cables, including RS-232-C interface standards and CCITT equivalents.
• Parts and Accessory Lists: Inventory of the modules, cables, and diagnostic materials required for the DP8-E system.