[Info-vax] XENIX VAX / PDP

[Scott Dorsey]

=?UTF-8?Q?Arne_Vajh=c3=b8j?=  <arne at vajhoej.dk> wrote:
>On 9/29/2019 9:08 PM, Bill Gunshannon wrote:
>> On 9/29/19 3:19 PM, Scott Dorsey wrote:
>>>
>>> Not really.  I know there were a few other attempts to port v7 to toy
>>> computers but none of them were as successful as Xenix.  Hell, you could
>>> buy a computer running Xenix at Radio Shack of all places.  "You've got
>>> questions, we've got blank stares."
>> 
>> I don't think Xenix was derived from v7 as much as from SYS-III.
>
>It would require a look at the code to see what is actually were.
>
>But it was sold as being based on Version 7.
>
>The Wikipedia article has a link to Computerworld 1981 with the
>text "The ... Xenix operating system, an enhanced version of Western
>Electric's Unix Version 7 developed under its license by Microsoft Inc.,
>is ...".

I don't know about later versions of Xenix, but the earlier versions that
I saw on systems like the Altos did not have named pipes or uname.  I
would consider those two things to be the major differences between v7
and the 16-bit version of System III.  There were a lot of changes in 
process scheduling too but I don't know what happened where on that.

Maybe later versions of Xenix implemented these features.  I would not be
surprised.  SCO was very active in development for a while before they 
let the lawyers take over.  So I would not be surprised if they implemented
a lot of System IIIisms later in their life.
--scott
-- 
"C'est un Nagra. C'est suisse, et tres, tres precis."