This document is a proprietary schematic diagram, copyrighted 1969 by Digital Equipment Corporation, titled "BUS CONTROL G726" (drawing number G726-0-1, Revision C). It is furnished exclusively for test and maintenance.
The core of the document presents a schematic mapping various bus control signals—such as "OLD," "RQ CYC," "NORM," "NORM SLOW," "DATA WARN," "ADR ACK," "ACK TRIG," and "SPECIAL"—to input lines labeled C through V. It includes a capacitor (CI, 56pF, 100V, 5%), explicitly noted as "not used on G726-YA variation." Other indications include "split lugs."
The drawing was initially created by Butler on September 3, 1969, and its most recent listed revision, C, was implemented on February 12, 1973. The document also contains an empty "Transistor & Diode Conversion Chart."
Site structure and layout ©2025 Majenko Technologies