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,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 4538 invoked from network); 17 Jun 2022 14:50:43 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 17 Jun 2022 14:50:43 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 41C2C40D00; Sat, 18 Jun 2022 00:50:37 +1000 (AEST) Received: from ewsoutbound.kpnmail.nl (unknown [195.121.94.170]) by minnie.tuhs.org (Postfix) with ESMTPS id B595A40CFF for ; Sat, 18 Jun 2022 00:50:25 +1000 (AEST) X-KPN-MessageId: c92ccda5-ee4c-11ec-8294-005056ab378f Received: from smtp.kpnmail.nl (unknown [10.31.155.37]) by ewsoutbound.so.kpn.org (Halon) with ESMTPS id c92ccda5-ee4c-11ec-8294-005056ab378f; Fri, 17 Jun 2022 16:50:10 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=planet.nl; s=planet01; h=to:date:message-id:subject:mime-version:content-type:from; bh=HsQiGz4mmdxjxq3GR4Ci24itKD8Kup4qA5m4Uuj5FW0=; b=wC53x+fs/dY+w48dGW0wDJMlu27ZK/Y+LefaVjKzMd6rzBgc+PwtHMJprUAJzcTB0x7eksxP3LfiC 6M2o42bzLJRNI2xEn9Gih1rJNaQ3xx1PM2KfxY3OxUr+Qc83HbtS+U7Q7uMci5iXu5OrULa7vDMZ42 FNlsGhfueaUgEou4= X-KPN-MID: 33|ivtlO4MP0GCbHPTWNVYrjEf8Dte0tgx27sXa/jFAa5P1/8wTxaIFYEECKdewAZ7 hr5JmbRBLgTpIPP61MS0M23aaK1QtRlFZStjtbisFt88= X-KPN-VerifiedSender: Yes X-CMASSUN: 33|zsjvHhtI7me/EtFh+n/sl1Fs3i0H1bhIYCP94stRb0J70jfjQ2UYs3GaSk7Brkq V14Kn1RucNKlcMxXpXQEppQ== X-Originating-IP: 77.172.38.96 Received: from smtpclient.apple (77-172-38-96.fixed.kpn.net [77.172.38.96]) by smtp.kpnmail.nl (Halon) with ESMTPSA id cb440fa3-ee4c-11ec-929b-005056ab1411; Fri, 17 Jun 2022 16:50:13 +0200 (CEST) From: Paul Ruizendaal Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) Message-Id: Date: Fri, 17 Jun 2022 16:50:13 +0200 To: tuhs@tuhs.org X-Mailer: Apple Mail (2.3654.120.0.1.13) Message-ID-Hash: E4K4V6LLKOBJT5LSENRRZZ7ZZUVABUQV X-Message-ID-Hash: E4K4V6LLKOBJT5LSENRRZZ7ZZUVABUQV X-MailFrom: pnr@planet.nl X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: forgotten versions List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Wholeheartedly agree with the observations on forgotten versions, lack = of source and a smaller pool of people back in the day. It is not just the Research versions, also the internal AT&T versions = and the base System V versions get little attention. Same reasons I = think. Luckily, these days the sources are available (although in the case of = SysV of unclear legal status). Part of the problem I think is that it is not well known what = innovations are in each version. About 2 years ago I did a lot of = spelunking through the V8 source and with the help of this list could = come up with a list of highlights for V8 (text is now on the TUHS V8 = source web page). Never had the time to do that for V9. I think it was mentioned that it = had a new filesystem with a bitmap free list. Also, it seems to have a = lot of cleaned-up implementations of things that were new and rough in = V8. No clue what was new in V10. Similar with Unix 3, Unix 4 and Unix 5. I=E2=80=99m thrilled that the = docs for Unix 4 showed up recently. In these doc=E2=80=99s there is no = material on IPC. =46rom this I think that the IPC primitives from = CB-Unix did not get merged in Unix 4, but only in Unix 5 (in a reworked = form). Personally, I=E2=80=99m still working (off and on) on recreating the = Reiser demand paging system. To keep it interesting I=E2=80=99ve now got = Sys III running on a small RISC-V board, and when I find another time = slot I=E2=80=99ll try to add Reiser paging to it. So the forgotten versions are only mostly forgotten, not totally = forgotten :^)