DF32 Discless Logic Test

This document, dated April 4, 1968, provides instructions for 'Discless,' a diagnostic test for the DF32 disc logic and its computer interface on the PDP-8/I system. It emphasizes that this test does not involve the physical disc itself, which should have its motor turned off if connected. The manual details hardware requirements (including a light card for track testing), loading and starting procedures, operator switch settings for different testing modes, and a comprehensive table of error halts with suggested corrective actions.