LINC-8

Paul F. Sullivan, Cornell Aeronautical Laboratory, Inc.,

Buffalo, New York

This document describes a hardware modification to the PDP-8

or LINC-8 which protects software from obsolescence caused

by the addition of new devices to the interrupt and/or data

break facilities and allows significant savings of money and

effort in interfacing further devices to the computer. The

hardware also provides the computer with a dynamic priority

interrupt facility.