M751

This document is a proprietary schematic diagram titled "LINE REGISTER AND CONTROL M751," copyrighted in 1968 by Digital Equipment Corporation (DEC). It is provided solely for test and maintenance purposes.

The schematic details a digital logic circuit primarily constructed using various 74-series Integrated Circuits (including gates, flip-flops, and other logic elements), along with resistors and capacitors. The circuit features numerous input/output signals, indicating its role in managing a line register with associated control logic, potentially involving memory addressing (e.g., HO(0-63), G ranges), timing/incrementing (e.g., TTINCR, TTSLI, TTLL), and memory/bus arbitration (e.g., MEM, BAC signals). A parts list is included, detailing the specific components by DEC part number and type.