Interrupt Control M7821

This document consists of a two-sheet engineering drawing package for the M7821 interrupt control board.

Document Contents

• Parts Reference: A list of all integrated circuits and electronic components used on the board, including their DEC part numbers.
• Component Placement: A diagram illustrating the physical layout of components on the board.
• Notes: Crucial assembly instructions regarding vector bit jumpers and NPR jumper configurations for different PDP-11 processor models.
• Circuit Schematics: Detailed logic diagrams showing the signal paths, gate connections, and pin assignments for the interrupt control circuitry.