Bus Requests

This document, labeled M7218, provides technical engineering schematics and a parts reference list for the 'Bus Requests' logic module.

Key contents include: - Parts Reference: A list of components (capacitors, ICs) used in the assembly. - Notes: Important design information regarding pin notation, signal source identification (e.g., KBR-2), and grounding/power specifications (+5V and GND pin assignments for various IC types). - Component Placement: A diagram mapping the physical location of ICs on the board. - Schematic Diagrams: Detailed logic circuit diagrams for processing bus requests (BR4 L, BR5 L, BR6 L, BR7 L), showing signal paths, grants, and bus request handling within the PDP-11 architecture. - Approval: The document is dated 3-13-91, with drawings originating in 1976.