DEC/X8 Module "Notfun" Non-functional IOT Test

This document describes the "NOTFUN" software module for the DEC/X8 system. Its primary purpose is to test the system by executing IOT (Input/Output Transfer) instructions that are not supposed to be functional, ensuring they do not trigger any unintended skip, trap, or state change in the processor. The document provides instructions on how to build and initialize the test, specifies system requirements (PDP-8/E, 8/M, 8/L, 8/I, or PDP-12), and details error reporting mechanisms for identifying setup or execution issues.