PDP-11 Bus Handbook

This handbook serves as a comprehensive technical guide for the PDP-11 family of computers, focusing on bus specifications. It is divided into two primary parts:

• Part 1: UNIBUS Specification - This section covers the architecture, signal lines, priority arbitration, data transfer protocols (DATI, DATIP, DATO, DATOB), and interface design guidelines for the UNIBUS, including power-up/down sequences and hardware configuration rules.
• Part 2: LSI-11 Bus Specification - This section details the LSI-11 bus, including master/slave relationships, bus cycles, interrupt handling, and electrical characteristics like bus driver/receiver specifications and bus termination.

Appendices provide additional information on the MASSBUS, the DECdataway, and the PCL11 communications link, making this a vital resource for users configuring systems and designing custom interfaces for PDP-11 hardware.