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    Rob Ricci (ricci@discuss.systems)'s status on Saturday, 20-Dec-2025 07:30:52 JSTRob RicciRob Ricci
    in reply to

    Here's the document release you were waiting for today!

    The UNIX V4 tape!

    https://archive.org/details/utah_unix_v4_raw

    #retrocomputing

    In conversationabout 10 months ago from discuss.systemspermalink

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    1. Domain not in remote thumbnail source whitelist: archive.org
      UNIX V4 tape from University of Utah (raw)
      UNIX V4 tape from the University of Utah, received by Martin Newell circa June 1974 around when he modeled the Utah Teapot.This is the raw analog waveform and the reconstructed digital tape image, read at the Computer History Museum on 19 December 2025 by Al Kossow using a modified tape reader and analyzed with Len Shustek's readtape tool.Metadata:2025-12-19 11:14:40 -0800 analog.csvtbin.log2025-12-19 11:26:36 -0800 analog.log2025-12-19 11:26:36 -0800 analog.peakstats.csv2025-12-19 11:23:08 -0800 analog.peakstats_deskew.csv2025-12-19 11:26:36 -0800 analog.tap2025-12-19 11:14:40 -0800 analog.tbin2025-12-19 11:04:36 -0800 v4.sal
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