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=-1.0 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, HTML_MESSAGE,MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 5088 invoked from network); 17 Sep 2021 14:34:38 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 17 Sep 2021 14:34:38 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id A28CA9CAB4; Sat, 18 Sep 2021 00:34:37 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id ED1469CAB3; Sat, 18 Sep 2021 00:34:09 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=bsdimp-com.20210112.gappssmtp.com header.i=@bsdimp-com.20210112.gappssmtp.com header.b="L9FV2ubZ"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 8FBDB9CAB3; Sat, 18 Sep 2021 00:34:06 +1000 (AEST) Received: from mail-vs1-f41.google.com (mail-vs1-f41.google.com [209.85.217.41]) by minnie.tuhs.org (Postfix) with ESMTPS id 8875C9CAB2 for ; Sat, 18 Sep 2021 00:34:05 +1000 (AEST) Received: by mail-vs1-f41.google.com with SMTP id k10so9572407vsp.12 for ; Fri, 17 Sep 2021 07:34:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20210112.gappssmtp.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=iO+29oSfgLeY8dPdyJA84i1O4jjkiDJ2W0s2b6uVxac=; b=L9FV2ubZdIUKZYdFR/vkArpfYLEaNuTbEwXfz8NXb3PaN0/VciLhsHlFjC4JYKndn2 yhhJL91KzVjXjsGzGE4TzrTi1f4SpjEDRPRIe3WzoPDFH8SggJ5PjDBnQ3NyrYMN3VQB YB7LChj1FqUucyFXG25twtvUWIfRhpOMJWKJoRsLGMSzbJ55+R4W8rPHskC3cYvDTOfp W6zRTO8mWglLvwBVTpb+RIdwdIVujtHPPKtMJo5Xh/Wwz1s40sjXoNyd0c6DpM3e+DGT 6ouJqLJqNwMYF7xZWLgcM8DhA1mSVqVGoOC/g94qLoWcT+8/E7jCNz61sqp1tFJg5OKt 1CsA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=iO+29oSfgLeY8dPdyJA84i1O4jjkiDJ2W0s2b6uVxac=; b=rySZJ5NYdGZBNkDT4T+/MGA74PXx5P41CEbF1JmuzsIPZUdWHZ1zDKT0pvgMUmyyxU 783G5Mu091p8Sb9kxQM8+dhPeg4Y2dsMbMJi99TNWYuB2pP+I1G28Vbtaw1ExqLEPWeX 5/CzKXZartKTS2hOFFL9zmpj6FQW+d+TGyIOLaBnj4kGb/xJIBj3B4G7kCIO0lkGCOej 1Tx3wgHngizapH7a//imTaikIyL4AIbv4ODbVPKMTkjLk8caSRzuS6xYbsw/WgjTTJia qvV1+yfXcKECdEx3CN+K3Bw4YCUZ7HM5cPHn3qXVRMtw6N/WqciLSeR/wrlMXPpdFqM3 wXHQ== X-Gm-Message-State: AOAM531t0H9flQ/MBY92KlcnO1KiqqQAJltVWO0g6lFuCt3O2hYJT5/G FI6xxJOr8NTe05Ia9727wnNLACwb/gVDRXSJ5IyYaQ== X-Google-Smtp-Source: ABdhPJywM/DjNzgNJsTsjymWmbSg37eoZY5R+ICgzmiBc6WXSobdWFdPJgDyCEINV+pPrEytO8WKqCF+DJkB+lSRzDQ= X-Received: by 2002:a67:1985:: with SMTP id 127mr8470523vsz.44.1631889244408; Fri, 17 Sep 2021 07:34:04 -0700 (PDT) MIME-Version: 1.0 References: <2007825471.713023.1631887763341.ref@mail.yahoo.com> <2007825471.713023.1631887763341@mail.yahoo.com> In-Reply-To: <2007825471.713023.1631887763341@mail.yahoo.com> From: Warner Losh Date: Fri, 17 Sep 2021 08:33:53 -0600 Message-ID: To: Roland Content-Type: multipart/alternative; boundary="000000000000b9e08305cc31d2f6" Subject: Re: [TUHS] Unix for PDP11/20 w/o mmu or paging option 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: "tuhs@minnie.tuhs.org" Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --000000000000b9e08305cc31d2f6 Content-Type: text/plain; charset="UTF-8" On Fri, Sep 17, 2021 at 8:10 AM Roland via TUHS wrote: > Hello Unix fanatics, > > I have a PDP11/20 and I would love to run an early Unix version on it. > I've been working on the hardware for a while and I'm getting more and more > of the pieces back online again. The configuration will be two RK05 hard > disks, TU56H tape, PC11 paper tape reader/puncher and a RX01 floppy drive. > Unfortunately I don't have a MMU or paging option. But it seems that the > earliest versions of Unix do not need the extra memory. > > Does anyone have RK05 disk images for these early Unix versions? That > would be a great help. Otherwise it would be great to have some input about > how to create a bootable Unix pack for this machine. > V5 is the earliest Unix we have contemporary images from. We have fragments from everything else earlier, including files scavenged/recovered from early DECtapes and some code recovered from kernel listings from a Unix course that was put together by Bell Labs... The Unix 1972 project that some TUHS members did. I think it's in the TUHS distribution archive, but also on github. I think Warren Toomey's repo is the canonical one https://github.com/DoctorWkt/unix-jun72 but https://github.com/c3x04/Unix-1st-Edition-jun72 has a couple of newer fixes for a docker file to contain the simh simulator. I'm unsure what hardware that's supported, though. The machine file suggests: rk03/rk11 177400 disk RK dc11 174000 tty? (not supp?) tc11/tu56 177340 dec tape DTn (not showing up in simh?) rf11/rs11 177460 fixed head disk RF kw11-l 177546 clock CLK pc11 177550 paper tape PTR/PTP asr-33 177560 tty? TTI, TTO which has an RK03, not sure how close that is to an RK05, so some tweaks may be needed. Warner > A bit about the hardware restoring is on the vcfed forum: > https://www.vcfed.org/forum/forum/genres/dec/78961-rk05-disk-drive-versions > https://www.vcfed.org/forum/forum/genres/dec/80723-pdp11-20-restoring > > Booting RT11 from RK05 > https://youtu.be/k0tiUcRBPQA > TU56H tape drive back online > https://youtu.be/_ZJK3QP9gRA > > Thanks in advance! > Roland Huisman > > > --000000000000b9e08305cc31d2f6 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


=
On Fri, Sep 17, 2021 at 8:10 AM Rolan= d via TUHS <tuhs@minnie.tuhs.org= > wrote:
=
Hello Unix fanatics,

I have a PDP11/20 and I would love to= run an early Unix version on it. I've been working on the hardware for= a while and I'm getting more and more of the pieces back online again.= The configuration will be two RK05 hard disks, TU56H tape, PC11 paper tape= reader/puncher and a RX01 floppy drive. Unfortunately I don't have a M= MU or paging option. But it seems that the earliest versions of Unix do not= need the extra memory.

Do= es anyone have RK05 disk images for these early Unix versions? That would b= e a great help. Otherwise it would be great to have some input about how to= create a bootable Unix pack for this machine.

V5 is the earliest Unix we have contemporary images f= rom. We have fragments from everything else earlier, including files scaven= ged/recovered from early DECtapes and some code recovered from kernel listi= ngs from a Unix course that was put together by Bell Labs...
=
The Unix 1972 project that some TUHS members did. I think it= 's in the TUHS distribution archive, but also on github. I think Warren= Toomey's repo is the canonical one=C2=A0https://github.com/DoctorWkt/unix-jun72 but=C2=A0= https://github.= com/c3x04/Unix-1st-Edition-jun72 has a couple of newer fixes for a dock= er file to contain the simh simulator. I'm unsure what hardware that= 9;s supported, though.=C2=A0 The machine file suggests:

rk03/rk11 =C2=A0 177400 =C2=A0 =C2=A0 disk =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 RK
dc11 =C2=A0 =C2=A0 =C2=A0 =C2=A0174000 =C2=A0 =C2= =A0 tty? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 (not supp?)
tc11/tu56= =C2=A0 177340 =C2=A0 =C2=A0 dec tape =C2=A0 =C2=A0 =C2=A0 =C2=A0 DTn (not = showing up in simh?)
rf11/rs11 =C2=A0 177460 =C2=A0 =C2=A0 fixed head di= sk =C2=A0RF
kw11-l =C2=A0 =C2=A0 =C2=A0177546 =C2=A0 =C2=A0 clock =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0CLK
pc11 =C2=A0 =C2=A0 =C2=A0 =C2=A01= 77550 =C2=A0 =C2=A0 paper tape =C2=A0 =C2=A0 =C2=A0 PTR/PTP
asr-33 =C2= =A0 =C2=A0 =C2=A0177560 =C2=A0 =C2=A0 tty? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 TTI, TTO

which has an RK03, not sur= e how close that is to an RK05, so some tweaks may be needed.
Warner
=C2=A0
A bit about the = hardware restoring is on the vcfed forum:

Booting RT11 from RK05
TU56H tape drive back online

Thanks in advance!
Roland Huisman<= br>

=C2=A0
--000000000000b9e08305cc31d2f6--