Interfacing and Installation

This document provides technical specifications, programming instructions, and operational descriptions for several digital peripheral systems and components used with the PDP-8/E computer. The content is divided into the following primary sections:

• Analog-to-Digital and Digital-to-Analog Subsystems: Detailed information on the AF04A scanning voltmeter and frequency measurement options, as well as the AA50-A and AA05/AA07 digital-to-analog converter (DAC) subsystems. This includes octal operation codes, execution times, and pin/bit configurations.
• Universal Digital Controller (UDC): Describes the UDC system for managing 12-bit addressable digital I/O channels. It covers interrupt handling, addressing, and specific IOT instructions for control and status monitoring.
• VW01 Writing Tablet: Covers the operation, multiplexing options, and programming instructions for the VW01 graphical input device, which converts spark-generated X-Y coordinates into digital input.
• Communications Equipment: Details the DC02-F 8-Channel Multiple Teletype Control, including configuration procedures, clock frequency selection for various baud rates, and programming for transmitter/receiver operations.
• Floating Point Processor (FPP-12): Explains the FPP-12 hardware, which enables high-speed floating-point arithmetic. It covers the numbering system, memory addressing methods, indexing, and an extensive list of instructions for floating-point operations, subroutine calls, and control.
• Data Entry Terminals: Provides specifications and functional descriptions for the RT01 DEC-link data entry terminal.
• Bus Conversion: Describes the DW08-A I/O conversion panel used for interfacing the PDP-8/E with peripherals requiring different logic level standards.
• Digital Logic Circuits: An appendix-style guide explaining standard DEC logic symbols (AND, OR, NAND, NOR, Flip-Flops, etc.) and their function in interface design.