GENERAL UTILITY PROGRAMS

This document, identified as Part 12 of a larger manual, serves as the technical documentation for the Peripheral Interchange Program (PIP) used within the DOS/BATCH operating system.

Summary of Key Functions: PIP is a core system utility designed to facilitate file management and data transfer between standard PDP-11 I/O devices (such as disks, DECtapes, cassette tapes, magtapes, and paper tape readers). Its primary capabilities include:

• File Transfer: Moving and merging files between various storage devices with support for different transfer modes (ASCII vs. binary; linked vs. contiguous formats).
• File Manipulation: Renaming, deleting, and protecting files, including support for asterisk (*) wildcard character matching for batch operations.
• Directory Management: Generating both full and brief directory listings, and entering User Identification Codes (UICs) into the Master File Directory (MFD).
• System Maintenance: Initializing (zeroing) disks and tapes, verifying data integrity, and recovering files that have become inaccessible due to system crashes.
• Operational Control: Providing specific switch commands to control hardware-level behaviors, such as tape rewinding, to optimize performance and prevent errors during data I/O.

The document provides syntax guidelines for command strings, troubleshooting tips for common operational pitfalls, and specific procedural instructions for different media types (magtape, cassette, DECtape, and RK11 disks).