[Info-vax] Y3K for PDP-11 Operating Systems

[Henry Crun]

On 03/05/11 20:51, Bob Koehler wrote:
>   >Bob Koehler wrote:
>
>>> In article<bdd4fd3d-bb52-43fb-ad9c-746b901f4d13 at gu8g2000vbb.googlegroups.com>, jjh<jjhudak at gmail.com>  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 You obviously have not read the historical documents.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 I am curious, I have not read the historical documents.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.
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