Type 14 Memory Expansion

This document outlines the operational details, commands, and hardware modifications required for the Type 14 memory expansion on the PDP-1. The Type 14 expansion increases the system's memory capacity to 32K words. Key topics covered include memory state switching commands (jfd Y and sdf), register functions (Data Field Working - DFW, Instruction Field - IF), sequence break behavior, and necessary technical modifications to the PDP-1 internal hardware and print nomenclature to support this expansion.