Article: 21016 of alt.sys.pdp10 Path: iad-read.news.verio.net!dfw-artgen!dfw-peer!news.verio.net!newsfeed1.easynews.com!easynews.com!easynews!sjc72.webusenet.com!sjc70.webusenet.com!news.webusenet.com!cyclone.bc.net!logbridge.uoregon.edu!tethys.csu.net!pln-w!spln!dex!extra.newsguy.com!newsp.newsguy.com!not-for-mail From: "Zane H. Healy" Newsgroups: alt.sys.pdp10,alt.sys.pdp11,vmsnet.pdp-11,comp.os.rsts,comp.os.vms Subject: Re: PDP-11 OS Release Dates Date: 12 Jul 2003 00:57:00 GMT Organization: Aracnet Lines: 23 Message-ID: References: NNTP-Posting-Host: p-812.newsdawg.com User-Agent: tin/1.4.4-20000803 ("Vet for the Insane") (UNIX) (Linux/2.2.22 (i686)) Xref: dfw-artgen alt.sys.pdp10:21016 alt.sys.pdp11:8043 vmsnet.pdp-11:22306 comp.os.rsts:756 comp.os.vms:188982 In vmsnet.pdp-11 Dennis Grevenstein wrote: > In alt.sys.pdp11 healyzh@noaracnetspam.com wrote: >> >> Is OS-11 related to RT-11? I think this is the first I've heard of it. > > It's mentioned in some RT-11 guide I have here. > I don't know it myself. I just found the following post from Sept. 2002 from Tim Shoppa: "The RT-11 Historical Overview states: The year 1971 was an exciting time...A popular operating system for the PDP-8, called OS/8, was the design model for the new PDP-11 operating system, tentatively called OS-11... ...in the fall of 1972...the groundwork was laid to make OS-11 compatible with OS/8 and TOPS-10... OS-11 was renamed first to RTPS-11 (Real-Time Programming System), then to RT-11 (Real Time). Version 1 of RT-11 was completed in the fall of 1973." Zane Article: 21005 of alt.sys.pdp10 Path: iad-read.news.verio.net!dfw-artgen!iad-peer.news.verio.net!news.verio.net!newsfeed.icl.net!newsfeed.fjserv.net!feed.news.nacamar.de!news.belwue.de!news.uni-stuttgart.de!rz.uni-karlsruhe.de!inka.de!aton!not-for-mail From: Dennis Grevenstein Newsgroups: alt.sys.pdp10,alt.sys.pdp11,vmsnet.pdp-11,comp.os.rsts,comp.os.vms Subject: Re: PDP-11 OS Release Dates Date: Wed, 9 Jul 2003 18:56:30 +0000 (UTC) Organization: insane in the mainframe Lines: 29 Message-ID: References: NNTP-Posting-Host: audrey.pcde.inka.de X-Trace: aton.pcde.inka.de 1057776990 12664 192.168.2.10 (9 Jul 2003 18:56:30 GMT) X-Complaints-To: usenet@aton.pcde.inka.de NNTP-Posting-Date: Wed, 9 Jul 2003 18:56:30 +0000 (UTC) User-Agent: tin/1.5.18-20030602 ("Darts") (UNIX) (Darwin/6.6 (Power Macintosh)) Xref: dfw-artgen alt.sys.pdp10:21005 alt.sys.pdp11:8010 vmsnet.pdp-11:22273 comp.os.rsts:744 comp.os.vms:188763 In alt.sys.pdp11 Zane H. Healy wrote: > > I'm looking for release dates for the various PDP-11 OS's. For example for > RT-11: > > RT-11 V4 was February 21st, 1980 > RT-11 V5 was March 12th, 1983 > RT-11 V5.6 was 1992 > RT-11 V5.7 was October, 29th, 1998 I've got a book here which says: OS-11 1972 RT11 V1 1973 RT11 V2 1974 RT11 V2C 1976 RT11 V3 1977 RT11 V5.1 1984 RT11 V5.2 1985 RT11 V5.3 1986 RT11 V5.4 1987 mfg Dennis -- The long journey to world domination begins with a single step. Illiad Article: 21023 of alt.sys.pdp10 Path: iad-read.news.verio.net!dfw-artgen!iad-peer.news.verio.net!news.verio.net!newsfeed.vmunix.org!peer02.cox.net!peer01.cox.net!cox.net!feed2.news.rcn.net!feed1.news.rcn.net!rcn!not-for-mail From: Glenn Everhart Newsgroups: alt.sys.pdp10,alt.sys.pdp11,comp.os.vms Subject: Re: PDP-11 OS Release Dates Date: Sat, 12 Jul 2003 16:23:59 -0400 Lines: 56 Message-ID: References: <110720032007475862%elliott@yrl.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Trace: UmFuZG9tSVaOT+HaYlmGkEgK6DFTBPls/U91i9K7DflMiWuW3Ktv3L4ARcJlo4hj X-Complaints-To: abuse@rcn.com NNTP-Posting-Date: 12 Jul 2003 19:43:17 GMT In-Reply-To: X-Accept-Language: en-us, en User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Xref: dfw-artgen alt.sys.pdp10:21023 alt.sys.pdp11:8063 comp.os.vms:189020 I seem to recall some discussions of an "OS-11" code name inside DEC fpr RT11, which was initially often thought of and spoken of as "OS-8 with the interrupts on". DOS-11 existed from the earliest pdp11s, starting maybe 1971 or so and by 1976 it was up to V10, used a variant of the RSX11D taskbuilder as its linker, and had a fair bit of software in the DECUS library to do interesting stuff with it. It was used to boot early RSTS and some other pdp11 OSs and its internals had somewhat in common with RSX11C and later RSX11B. (RSX11A was an entirely different animal.) The main problem DOS had was that it used .read and .write calls for most of its I/O. While its low level I/O was reasonably fast, .read and .write did at least scores if not hundreds of instructions per byte in formatting and checking for all the funny options those services had. As a result when RT11 came along, and had apps do their own I/O, it looked blindingly faster. A decent record system in DOS would of course have equalized this. I sometimes think of RMS when recalling this. Glenn Everhart Paul Sture wrote: > In article <110720032007475862%elliott@yrl.co.uk>, Elliott Roper writes: > >>In article , Dennis Grevenstein >> wrote: >> >> >>>In alt.sys.pdp11 healyzh@noaracnetspam.com wrote: >>> >>>>Is OS-11 related to RT-11? I think this is the first I've heard of it. >>> >>> >>>It's mentioned in some RT-11 guide I have here. >>>I don't know it myself. >> >>It has been a long time, so I might be wrong. ISTR there was not an >>OS-11 but there was a DOS-11 in the very early PDP-11 days. There were >>remnants of it in the RSTS CIL. >> >>Yep. I found this on Deja-Google from 1994 >> >>http://www.google.com/groups?q=DOS-11&start=10&hl=en&lr=&ie=UTF-8&safe=o >>ff&selm=940927100650.62%40arisia.gce.com&rnum=13 >> >>If Everhart said it, it is right. >> >>Show complete thread when you get there. Some famous names are still >>around here. > > > Thanks for that link. It brought back fond memories of RT-11, including > ones of RSX feeling tardy at times in contrast :-)