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Definitive List of TRS-80 Model II Operating Systems

By | September 17, 2015

Model II Operating Systems (in chronological order) Tandy TRSDOS Model II Version 1.1/1.2 The original Model II Z80 operating system which was released with the first Model II in 1978. Supports SSDD 8” floppy drives only. Was replaced by 2.0 fairly quickly. TRSDOS Model II 1.2 TRSDOS 2.0 The second OS release for the Model… Read More »