On Thursday, 04/03/2008 at 11:58 EDT, "Schuh, Richard" <[EMAIL PROTECTED]> 
wrote:
> Yeah, it was a gutted OS/360 MFT system. MVS/XA was not even a gleam in
> its daddy's eye.

My unmade point:  GCS was cloned from CMS as it existed in VM/SP 3. 
Additional code added to tighten file system security, support 
cross-virtual machine multitasking and to run applications in problem 
state is VM-written code.  We did not import code from OS/360 MFT.

I know this: I was there, writing the code for the GCS recovery machine, 
as well as working on DEB security in the OS simulation for READ, WRITE, 
POINT, GET, and PUT.

Where the existing CMS MVS/SP (at the time) simulation was not sufficient 
to meet VTAM's and NetView's requirements, the GCS versions of those 
interfaces were updated with extra function.

Alan Altmark
z/VM Development
IBM Endicott

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