Instruction Test Part II

This document details "Instruction Test Part II," a diagnostic program for the PDP-9 computer. Its primary purpose is to thoroughly test several key machine functions, including DZM (Decrement and Skip if Zero), DAC (Deposit Accumulator), ISZ (Increment and Skip if Zero), JMP (Jump), JMS (Jump to Subroutine), XCT (Execute), AUTOINDEX, INDIRECT addressing, TIME CLOCK, DBR (Data Buffer Register), and INTERRUPT. The program is designed for a PDP-9 system with a minimum of 8K core storage and assumes that "Instruction Test Part 1" (MAINDEC 09-D000-D) has been previously run.

The document outlines the loading procedure, which involves using an HRI tape and HS paper-tape reader, starting at address 22B. It also specifies the control switch settings and starting/restart addresses (6265B). A significant portion of the document is dedicated to listing individual error halts and their descriptions, allowing for precise identification of failing tests for each function. The estimated execution time for a complete pass of this test is 5 milliseconds.