Unibus/Console Cont. Board M8136-0-1

This document contains detailed schematics and logic diagrams for the Unibus Console Controller (UBC), Unibus Control (UBCA), Unibus Bus Arbitrator (UBCD), Unibus Console Control (UBCC), and various other control and interface modules within a Digital Equipment Corporation computer system. The schematics illustrate the interconnections of integrated circuits, resistors, capacitors, and other electronic components, along with their respective signals and functions. They cover aspects such as bus arbitration, data transfer, interrupt handling, addressing, and console control logic. Additionally, flow diagrams are included to depict the operational sequences and decision points for various system states and operations, including instruction fetching, execution, and error handling. The document also contains a parts list and revision history for the schematics.