DR11-W Direct Memory Interface Module

This document provides a comprehensive user guide for the Digital Equipment Corporation DR11-W Direct Memory Interface Module (M8716). It includes sections on functional description, software interface with programmable registers, theory of operation for programmed I/O and DMA transfers, and detailed installation procedures. The manual also describes interprocessor link configurations and maintenance diagnostic programs available for both PDP-11 and VAX systems. Appendices offer I/O signal pin assignments and functional comparisons between the DR11-B and the DR11-W modules.