Back when I too worked on Amdahls  in the 80s, the SEs told me the Fujitsus had 
31 bit I/O architecture! Don't know the truth of that, though.

Robin

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Mike Cairns
Sent: 23 February 2017 17:08
To: [email protected]
Subject: Re: Fujitsu Mainframe Vs IBM mainframe

The first ten years of my mainframe career I never saw a true IBM installation. 
 First I worked with a Fujistu and MSP, then I moved to a shop that had Amdahl 
kit, and after that a shop that was Hitachi.  At least for the Amdahl and 
Hitachi the OS was really MVS, OS/390 etc.

The Fujitsu environment worked almost exactly the same as the MVS system from 
the perspective of an applications programmer.  The sysprogs probably knew more 
about the differences than I did at the time.  We ran Adabas/Natural, lots of 
PL/1, SAS, and probably many more besides that I didn't know about (this was my 
first shop, I was quite young and completely inexperienced of course).

Interesting things I remember about the Fujitsu OS:

MVS was called MSP - Multiple Systems Product if I recall correctly.  But 
apparently you could see the IBM copyright in the load modules in some places...
TSO was called TSS - Time Sharing System RACF was still called RACF - and 
worked exactly the same Though JCL was the same, we had something called JOL - 
Job Oriented Language.  This was a set of ISPF panels that walked you through 
creation of each jobstep and built (awful) dynamically allocated JCL.
ISPF was called SPF - Systems Productivity Facility We had something called GEM 
- I forget the acronym, this was a source/version control system if I recall 
correctly.
Used to have to use the TSO SUBMIT and OUTPUT commands a lot - but I guess this 
was no different from MVSes of the same era (early 80's).
We didn't have SDSF.

Mike

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