Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder2.enfer-du-nord.net!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail From: Henry Crun Newsgroups: comp.os.vms,alt.sys.pdp11,comp.sys.dec,vmsnet.pdp-11 Subject: Re: Y3K for PDP-11 Operating Systems Date: Tue, 03 May 2011 21:39:40 +0300 Organization: A noiseless patient Spider Lines: 44 Message-ID: References: <4d99c3b6$0$23756$14726298@news.sunsite.dk> <4dc032d4$0$313$14726298@news.sunsite.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: mx02.eternal-september.org; posting-host="eoXjAGcs3EK3JqkUhXaZzA"; logging-data="15509"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/WDzHVJuAoFnfqVcpsIoE9" User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.14) Gecko/20110223 Thunderbird/3.1.8 In-Reply-To: Cancel-Lock: sha1:SJV1hQujjCCpJ5M4UtIOu+ZMVlo= Xref: x330-a1.tempe.blueboxinc.net comp.os.vms:2658 comp.sys.dec:376 On 03/05/11 20:51, Bob Koehler wrote: > >Bob Koehler wrote: > >>> In article, jjh writes: >> >> >>> To make sure I understand, y3K =3D 3000, it is 2011 now...um that is 989 >>> years from now...or roughly 12.5 lifetimes....I seriously don't think >>> that anyone in the year 3000 will want to know anything about DEC hw >>> or sw. >>> >> You obviously have not read the historical documents. >> >> > I am curious, I have not read the historical documents. > Can you please post a link? > > As for Y3K for RT-11, since the date is presently managed > up to 2099 as of V05.07 of RT-11, dates starting in 2100 > become the next problem. And since adding support only > for an additional 128 years seems like a complete waste of > time, then 3000 CE was chosen as the next minimum step. > In practice, at least an additional 4000 years would probably > be added, more than enough to handle dates until the rules > for the CE (Commercial Events, Common Era, Christian Era > or Gregorian - all are identical and have a 400 year cycle) > Calendar requires a rule change to handle years which are > less than the current 365.2418 days. > > So Y3K is really just Y2.1K if that makes a difference. > > Jerome Fine IIRC there was an article by someone from DEC who promised that RSTS would be patched to accept five-digit years before the year 9999. However I doubt that current versions would be supported until then... -- Mike R. Home: http://alpha.mike-r.com/ QOTD: http://alpha.mike-r.com/php/qotd.php No Micro$oft products were used in the URLs above, or in preparing this message. Recommended reading: http://www.catb.org/~esr/faqs/smart-questions.html#before