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The SDF Museum has the following online systems

* Systems Concepts SC40 A DEC KL10B Clone running TOPS-20 * XKL Toad-2 A DEC KL10B Clone running TOPS-20 * PiDP-8/i DEC PDP-8/i replica/simulator running Time Sharing System 8 (TSS/8)

SDF Sites with further information

https://twenex.org https://tss8.sdf.org https://unix50.org