Omnibus Magnetic Tape Options

This document provides technical information regarding magnetic tape storage options for the PDP-8/E computer system, specifically focusing on DECtape (TD8-E) and DECmagtape (TU10) systems.

Key highlights include:

• TD8-E DECtape Option: This is a low-cost, standard storage interface for the TU56 DECtape drive. It utilizes a single quad module that plugs into the OMNIBUS and supports bi-directional tape motion. The system allows for random access and modification of data blocks without disturbing adjacent recorded information. The document provides detailed physical, environmental, and operational specifications for the TU56 drive.
• TD8-E Control: It acts as an interface between the PDP-8/E and up to four dual or single TU56 drives. It is intended primarily for library storage and program updates, rather than as a high-speed data transfer device. Digital Equipment Corporation provides a suite of software for reading, writing, and certifying tapes to ensure compatibility with other DECtape systems (like the TC08).
• TU10 DECmagtape Option: This section details the interface and configuration for the TU10 magnetic tape system. The document includes a configuration table specifying different system options (TM8-EA, TM8-FA, TC58), channel counts, tape densities, and speed requirements. It notes that the master units include logic for managing multiple slave units within the system.