From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 14075 invoked from network); 19 Dec 2021 01:00:58 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 19 Dec 2021 01:00:58 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 84C709CBE4; Sun, 19 Dec 2021 11:00:54 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 3E1DF9CBE3; Sun, 19 Dec 2021 11:00:20 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=plonka-us.20210112.gappssmtp.com header.i=@plonka-us.20210112.gappssmtp.com header.b="Yxjt0AVm"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 712349CBE3; Sun, 19 Dec 2021 11:00:17 +1000 (AEST) Received: from mail-pj1-f43.google.com (mail-pj1-f43.google.com [209.85.216.43]) by minnie.tuhs.org (Postfix) with ESMTPS id 710469B826 for ; Sun, 19 Dec 2021 11:00:16 +1000 (AEST) Received: by mail-pj1-f43.google.com with SMTP id y16-20020a17090a6c9000b001b13ffaa625so6797163pjj.2 for ; Sat, 18 Dec 2021 17:00:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=plonka-us.20210112.gappssmtp.com; s=20210112; h=mime-version:from:date:message-id:subject:to; bh=IIhRMO+rVbapR0ciZPdZNPReye64O9pipisBGi9zqWg=; b=Yxjt0AVm/fisC9Ni302DukL93nJz957cGzpZiUETY/BZyVUFf/bUAjspo5uY8mpw5V CJY0imb6DsvxCGJyyH3CCdHuGAU1N48uNkdYcf4KBYfezI9SFCP6bQKwPhW+ED2GHb9x 6UDr5ar5CG4p3mmBSn+giXwGV/7Y+DiAI/murMxlvpJsQY6AmAJ1UC+jsZd1+mRO3sHZ QlGvQyyW/WdsIvWBmFnT/a2YeCKx008D3WzxLSVUnXtfZUdiHJS2VeAS6YnHLpv9GE2r 6verKuyPd9IcJoL3z0iEcf+8OPoKQ9usycPXqE8rz7sBvf2huW2EE8WyTduF0Eefo6UX f6cg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=IIhRMO+rVbapR0ciZPdZNPReye64O9pipisBGi9zqWg=; b=Fv4hWbMPa/Pq+2xXKXo9xTXAROCnfiq6nqNfwLxr7cJOB99xahNpe4L88eFzswRd3s 4q3ICQdKE1LB0QbGBpVJVYVkArVGQZuFXbY8TPC9YtiU/lmRi0QeL+j6vkDjFaYqua/x iu2JMilW8Wpz6RtwO2qUYRCfyNdHlTufhU/A1vsfVQuwnSXQZTA8cAWJCEVqxxCZRt3a cAUiwHN0jMtgnRtu2CVcKIvq+tzRCktbhfuViceTrjLkYkIwGtTjiuo36Oisd+0eyvnd Yc5A2+VKfdkE6XDMmIx41OULcCLM/p8b8cQsFEXInzlBg94i6ro+E42XNnUCV45HBkKp 6hIA== X-Gm-Message-State: AOAM5328Ly46J1JDTMsK0MI2MxfGtZK/7vmnGpFbVmj/+i+w+61AjiTu T2ErVrzijkt/ZprXtDK2hUyyJNVULUGhuGHtc9wrbMa0vvgMAw== X-Google-Smtp-Source: ABdhPJyw7byawY7UgzWuaod1fUcUxWXm7N9gD8qtrjYAP4Y2VtSrfDS2aVUaKIbkI1XN6M5u6Sh7xfrw3vQjE4o4KxU= X-Received: by 2002:a17:90b:4c8f:: with SMTP id my15mr11680923pjb.132.1639875615386; Sat, 18 Dec 2021 17:00:15 -0800 (PST) MIME-Version: 1.0 From: Dave Plonka Date: Sat, 18 Dec 2021 19:00:04 -0600 Message-ID: To: tuhs@tuhs.org Content-Type: text/plain; charset="UTF-8" Subject: [TUHS] PDP 11/23 running UNIX version 6 at VCF Midwest! X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Hi folks! While doing some end of year retrocomputing revisiting, I thought some of you might enjoy this - there is hope for the next generation(s)! ;) https://www.youtube.com/watch?v=_Zyng5Ob-e8 In this video I share my personal pick for "best" demo at VCF Midwest: Gavin's PDP 11/23 running UNIX Version 6! We write and run a simple BASIC program in Ken Thompson's bas(1), finding some quirks with this (currently) entirely floppy-based system, possible having to do with a glitch in disk I/O. (We discovered bas(1) uses a temporary file as backing store.) Filmed at the Vintage Computer Festival Midwest: VCF Midwest 16, September 11, 2021 http://vcfmw.org/ Here's the source code to the simple program we wrote; you can also run it on modern machines if you install a Research UNIX version using SimH (pdp-11 simulator). 5 goto 30 10 for col = 1 arg(1) 12 prompt " " 14 next 20 print "Welcome to VCF Midwest!" 25 return 30 for x = 0 55 40 10(x) 50 next 60 for x = _56 _1 70 10(_x) 80 next -- dave@plonka.us http://www.cs.wisc.edu/~plonka/