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Path: utzoo!watmath!watdcsu!herbie
From: herbie@watdcsu.UUCP (Herb Chong [DCS])
Newsgroups: net.unix
Subject: Re: Re: IBM to support UNIX on 4300
Message-ID: <1019@watdcsu.UUCP>
Date: Mon, 25-Feb-85 10:17:17 EST
Article-I.D.: watdcsu.1019
Posted: Mon Feb 25 10:17:17 1985
Date-Received: Wed, 27-Feb-85 05:37:05 EST
References: <801@sdcsla.UUCP> <424@lsuc.UUCP> <990@watdcsu.UUCP> <170@cadtroy.UUCP>
Reply-To: herbie@watdcsu.UUCP (Herb Chong [DCS])
Organization: U of Waterloo
Lines: 43
Summary: 

In article <170@cadtroy.UUCP> schoff@cadtroy.UUCP (Martin Lee Schoffstall) writes:
>> 
>> IX/370 is designed to run solely in a virtual machine environment (i.e.,
>> it can't run standalone on a S/370 or 370-XA machine).  thus, it can
>> co-exist with other virtual machines running any other operating system
>> supported by VM (almost every one ever made for 360/370 machines). 
>> ...
>> Herb Chong...
>> 
>Ahhh, but the rumor is that the UNIX that was FIRST delivered is a standalone
>operating system and then is GOING to be delivered on top of VM to IBM by their
>outside contractor.  It would be interesting to see if that standalone
>UNIX could be forced out of the bowels of IBM.  I guess that it was just
>too much of a head-trip for IBM to have an operating system running on
>their machines that had Nothing to do with them.  I understand why they would
>want it running on top of VM but I could see lots of universities wanting
>to run it standalone.
>
>
>marty
>{seismo,wanginst}!ucadmus!schoff
>schoff@cadmus.ARPA

the original version, VM/IX also requires VM/SP3 to run, and required
mods to the CP component (the actual operating system that creates and
manages virtual machines).  this new version, IX/370, does not require
such mods and means less programming effort.  the CP mods ruled out
certain typical user mods to CP because of the way they were done.
both IX/370 and VM/IX require series/1 to do terminal I/O but IX/370
allows you to share the series/1 between different copies of IX/370 in
different virtual machines.  VM/IX requires dedicated series/1.
also, IX/370, is not an exact port of Sys VR2.  the blocksize used
for I/O is 4K.  this means much better typical I/O performance
when compared to 1K blocks.

Herb Chong...

I'm user-friendly -- I don't byte, I nybble....

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