Family of 8 ASR33/35 Teletype Tests, Part 2

This document details "Part 2" of the diagnostic test package for ASR33 and ASR35 Teletypes used with PDP-8 computer systems. This diagnostic contains nine selectable programs (numbered 0 to 10 in octal) designed to verify the operational integrity of the printer, punch, and keyboard components.

Key features of the diagnostic include:

• Selectable Programs: The user can select specific tests via the Switch Register (SR). Programs include a Printer Test (PRG0), Punch Test (PRG1), Keyboard Test (PRG2), Combined Reader/Printer/Punch Test (PRG3), and various exerciser routines (PRG4–PRG10) which test for mechanical and timing issues, including those that involve stalls.
• Requirements: Testing requires a standard PDP-8/S, PDP-8, or PDP-8/I system and an ASR33/35 Teletype. Successful completion of "Family-of-8 ASR33/35 Teletype Tests, Part 1" is a prerequisite.
• Procedures: The document outlines loading, starting, and operating procedures, including how to set control switches for various test options, error handling, and manual verification of printouts.
• Diagnostics: Error codes and halting memory locations are provided to help technicians identify issues, such as sync errors, read check errors, and unexpected interrupts.
• Technical Details: The document includes extensive listings of the source code (starting on page 18) to support technical debugging and system integration.