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Date:      Mon, 10 Aug 1998 20:35:16 +0100
From:      Adrian Wontroba <aw1@stade.co.uk>
To:        freebsd-chat@FreeBSD.ORG
Subject:   Re: FreeBSD
Message-ID:  <19980810203516.B7341@stade.co.uk>
In-Reply-To: <19980810083241.L11095@freebie.lemis.com>; from Greg Lehey on Mon, Aug 10, 1998 at 08:32:41AM %2B0930
References:  <19980809104012.P14475@freebie.lemis.com> <Pine.3.89.9808091311.A6903-0100000@netcom3> <19980810083241.L11095@freebie.lemis.com>

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On Mon, Aug 10, 1998 at 08:32:41AM +0930, Greg Lehey wrote:
> Oh, sure, when you have multiple CPUs.  I think we were talking about
> software multiplexing a physical system.

It can be done - several ICL 2900 series mainframes concurrently ran
two different operating systems, with different underlying instruction
sets, on a single CPU (OCP). This allowed people to get rid of their old
hardware sooner.

The software multiplexing was performed by the OCP microcode.

-- 
Adrian Wontroba, Stade Computers Limited.       phone:  (+44) 121 681 6677
Mail info@accu.org for information about the Association of C and C++ Users
or see <http://www.accu.org/>;

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