Have a look at :

http://www.demorton.com/Tech/$OSTL.pdf



-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Phil Smith
Sent: Tuesday, March 18, 2014 9:59 AM
To: [email protected]
Subject: Re: Difference between MVS and z / OS systems

Shmuel Metz wrote:
>>VM was CP67
>In the sense that OS/390 was OS/360. VM was a rewrite of CP67.

VM wasn't a "rewrite" of CP67, any more than z/OS is a "rewrite" of OS/360. 
It's a linear descendant; plenty of code remained.

As a VMer for 40+ years, the truth has been in here, but:

-          CP-40 was started in very late 1964, on a modified 360/40

-          CP-67 was indeed 1967, on a 360/67

-          The VM/370 product was announced June 30,  1973

For all this and more, read Melinda Varian's definitive paper on VM history, 
1964-1997, at http://www.leeandmelindavarian.com/Melinda/25paper.pdf

I'm assuming from having never seen a reference to such on IBM-MAIN that no 
such community resource exists for z/OS-correct?

...phsiii

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