Float 1's and 0's Through Memory

This document outlines the MAINDEC-12-DIEA-D diagnostic program, designed to test memory integrity on standard PDP-5, 8, 8/S, 8I, 8L, 12, and Linc-8 computer systems. It details two primary test methods: floating a single bit through all memory locations to verify storage capabilities and accessibility, and filling memory with bit patterns (all ones except one) to ensure data stability and detect potential hardware errors. The document includes comprehensive machine requirements, loading procedures using binary loaders, manual console switch settings for operation and error suppression, and the complete source code listing.