In the late 60's and early 70's I was a fairly junior IBM systems
engineer in Chicago. I scrounged a lot of machine time to prepare for a
benchmark and demo for a customer. One IBM site I found time at was in
Des Plaines, IL, just NW of O'Hare field. I used a 360/40 that had an
extra toggle switch on the front panel. It was labelled virtual and
real. That was the test bed for CP/40. It was at least 10-15 years
before I knew what that meant and the fact that I was using a museum
piece. I think that when this came up a year or two ago, someone told
me and I think that it was Steve Gentry from Lafayette Life, that that
particular 360/40 was the only one.
An interesting side on that demo (at least for me) was that the customer
was a Honeywell user. Naturally the customer's programs that I was
demonstrating were heavily tape. During the demo, the takeup reel and
hub on the 240x tape drive completely fell off the drive and dropped
down into the vacuum tube. We didn't get the sale that time.
Jim
Schuh, Richard wrote:
Before that, there was CP-40. Look at Melinda Varian's History of VM.
You can find it at http://www.princeton.edu/~melinda/
Regards,=20
Richard Schuh=20
-----Original Message-----
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of McKown, John
Sent: Thursday, January 11, 2007 1:21 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: History question.
Just for my curiousity. Was CP-67 the first "virtualization engine" ever
produced? Or did some other company have this type of ability before IBM
did it?
--
John McKown
Senior Systems Programmer
HealthMarkets
Keeping the Promise of Affordable Coverage
Administrative Services Group
Information Technology
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Jim Bohnsack
Cornell University
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