From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.5 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id 1377ef57 for ; Tue, 14 Jan 2020 17:26:56 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id EC0F39BCB5; Wed, 15 Jan 2020 03:26:54 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 0EE8D9B841; Wed, 15 Jan 2020 03:26:16 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=ccc.com header.i=@ccc.com header.b="fb0QS3mB"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 487F99B841; Wed, 15 Jan 2020 03:26:15 +1000 (AEST) Received: from mail-qt1-f175.google.com (mail-qt1-f175.google.com [209.85.160.175]) by minnie.tuhs.org (Postfix) with ESMTPS id 3795A9B804 for ; Wed, 15 Jan 2020 03:26:11 +1000 (AEST) Received: by mail-qt1-f175.google.com with SMTP id e12so13163911qto.2 for ; Tue, 14 Jan 2020 09:26:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ccc.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=dFEJBIW4ZqzH44EaEaPkWsfR6VciJ/rC3VCJa8Abxho=; b=fb0QS3mBELJmiIHrIMXd096RhFQECLH4gOGhRuJmBStTESQdoFbLz/SEDHSgRYdVBY y40uN6XQrSCIcd7QOafy5ENMg3MYPwj1D1mnRnv9PlBWYHrX5htzq4/E/QqjOJGEH/9O 5dzpfMeQwWt1I+8YNWIcBnnhASAq+9R6FNh3Q= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=dFEJBIW4ZqzH44EaEaPkWsfR6VciJ/rC3VCJa8Abxho=; b=QXQwiiUeQDKU3xgw0cTFcVHHgPuUdECTSRpojVgNw9QFqcN8N9Pusmgx3OUkBQBbdg JFe/wT2xIbB25j8OPk1Rn83TM8wJk1Wf6PAJEQqfPQ6crt7BuBd7c8abXtKrHJ1IQ0NU r+Ls+gjGQJN3T3N5YIjIWtFpjMwRQfsWZvE0JEoNbghD0yS9VusLRCBHxw3n1UZGSnuq csDueZjSm/+Jyzra+M6dGuEawc9Xn4M7ZhGgtMbvaPXyDaRG0lr9ZNM6T14NFjHeKf94 hwsY//VVix0+Btkj+mXuH/C7e8ObiDHJvAgbXzhtX5SNGw/CgNXmEg752GcvbtUIoEO4 jJUQ== X-Gm-Message-State: APjAAAWZ0VEf7wkNUyGz646nvU5Yp0m772MRS7YxWpaZBF01A8KjBfgb jhfGomr7i2ZRnMPvUuxZIiJxfEt1W4PmZ7kKmGAklw== X-Google-Smtp-Source: APXvYqy6HbV8pzX/XxeA+cLFtu/UifJRP5gzFNgV9jz+cw2HsoZYbkXQmV5L//NFrGAvNZ5wVozeNZNM8UYougaDIR8= X-Received: by 2002:aed:36e5:: with SMTP id f92mr4663790qtb.354.1579022770232; Tue, 14 Jan 2020 09:26:10 -0800 (PST) MIME-Version: 1.0 References: <7wmuaqju3u.fsf@junk.nocrew.org> <202001141659.00EGxBTs1036759@darkstar.fourwinds.com> <7wsgkihsdh.fsf@junk.nocrew.org> In-Reply-To: <7wsgkihsdh.fsf@junk.nocrew.org> From: Clem Cole Date: Tue, 14 Jan 2020 12:25:44 -0500 Message-ID: To: Lars Brinkhoff Content-Type: multipart/alternative; boundary="0000000000004ff68a059c1ce31b" Subject: Re: [TUHS] Spacewar at Bell Labs 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: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --0000000000004ff68a059c1ce31b Content-Type: text/plain; charset="UTF-8" I built a paper tape reader at one point, lord knows were it is. It's pretty easy -- Two pieces of wood to hold the paper with a mm or 2 shaved off the bottom of one of them the width of the paper tape. Then 9 parallel holes and put optical transistors connected to a 5 volt supply via a series resistor, running into a parallel port the 4th one is used as a strobe to pick of the 8 data bits and small light bulb on the other piece of wood. You then just pull it through and its self strobing. Set up a cat < /dev/parallel > /tmp/foo Your basically done, you'll need to pick reasonable values for the resistors to that match your transistors to switch on/off if the light passed through the hole. I've forgotten what I used, it something I had in the parts box. On Tue, Jan 14, 2020 at 12:16 PM Lars Brinkhoff wrote: > Jon Steinhart wrote: > > I have a copy of double-sun space war (sorry, just the binary) for the > > PDP-15/GRIN-2 on DEC fan-fold paper tape with the boot loader written > > in octal on the leader. Not sure if it's of any use > > I'm very interested in this! Is the paper tape readable somehow? > --0000000000004ff68a059c1ce31b Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I built a paper tape reader at one point,=C2=A0lord kno= ws were it is. It's pretty easy -- Two pieces of wood to hold the paper= with a mm or 2 shaved off the bottom of one of them the width of the paper= tape. Then 9 parallel holes and put optical transistors connected to a 5 v= olt supply via a series resistor, running into a parallel port the 4th one = is used as a strobe to pick of the 8 data bits and small light bulb on the = other piece of wood.=C2=A0 =C2=A0You then just pull it through and its=C2= =A0self strobing.=C2=A0 =C2=A0Set up a cat < /dev/parallel > /tmp/foo=
Your basically done, you'll need to pick reasonable values for= the resistors to that match your transistors to switch on/off if the light= passed through the hole.=C2=A0 I've forgotten what I used, it somethin= g I had in the parts box.=C2=A0=C2=A0

=C2=A0
<= br>


On Tue, Jan 14, 2020 at 12:16 PM Lars Brinkhoff <<= a href=3D"mailto:lars@nocrew.org" target=3D"_blank">lars@nocrew.org>= wrote:
Jon Stei= nhart wrote:
> I have a copy of double-sun space war (sorry, just the binary) for the=
> PDP-15/GRIN-2 on DEC fan-fold paper tape with the boot loader written<= br> > in octal on the leader.=C2=A0 Not sure if it's of any use

I'm very interested in this!=C2=A0 Is the paper tape readable somehow?<= br>
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