May 21, 2024 – LDOS 5.3 Model 4 Interface Kit Manual May 21, 2024May 21, 2024 Ira Ian has kindly provided a scan of the LDOS 5.3 Model 4 Interface Kit Manual! Title: LDOS 5.3 Model 4 Interface KitPublisher: Misosys IncYear: 1987Size: 11,218,690Pages: 14Notes: [Blue Cover]