PDP-9 & 9/L Instruction List

This document serves as a comprehensive instruction list for the PDP-9 and PDP-9/L computers, detailing their various operational capabilities. It is structured into several key sections covering different instruction types and system features.

The core of the document includes Memory Reference Instructions (such as load, store, add, jump, and skip), basic Operate Instructions (like complement, rotate, clear, set, and halt), and a detailed section on Extended Arithmetic Element (EAE) instructions for complex arithmetic operations (including various shifts, normalize, multiply, and divide functions). It also extensively covers Input/Output Transfer (IOT) instructions, specifying commands for paper tape reader/punch, real-time clock, DECtape control, and console teletype operations (both keyboard and teleprinter).

Beyond instruction sets, the document provides information on memory protection features, oscilloscope display commands, and a table of ASCII teletype codes. It also outlines mechanisms for program interrupts, automatic priority interrupt (API) with associated status bits, and memory extension control. A dedicated section lists the channel and priority assignments for various standard devices, alongside power failure detection. For each instruction, the document provides its mnemonic code, octal code, a description of the operation, and the number of cycles required for execution.