Subroutines

This document is a technical collection of assembly language subroutines and test programs for a PDP-1 computer, dating from 1961. It includes:

• Mathematical subroutines (Divide, Multiply).
• Peripheral test routines (Punch test, Tape Control Program, Tape duplicator/verifier).
• Utility and diagnostic programs (Address checker, typewriter control, and decimal print routines).
• Binary punch and load packages.

The document provides the raw assembly code for these functions, including comments, register operations, and sub-routine calls, serving as a functional library for systems programming on early DEC hardware.