*Hi Shmuel and everybody on the list -* * * I would like to address any matter at http://www.mainframes360.com/2012/11/tso-and-ispf.html which requires * correction*. *If any of the other gentlemen, would like to give me some feedback, criticisms, data, I welcome him with my arms wide open.* * * *Shmuel,* * * 1. Weren't SSS, MSS and MPS later known as PCP, MFT and MVT?
2. I didn't know, that they had several releases of TSS/360. I thought, IBM scrapped it, and only released TSO as an optional feature with MVT. But, I shall *correct that*. 3. Your lines '*I've never seen a system running TSO where there were as many processors as there were TSO regions.*' Is that mentioned directly or implied in my post? 4. Shmuel, the article just introduces the reader to *ISPF*, without going into depth; the gist of it is - TSO/ISPF are used as a development environment. So, I haven't talked about, the ability to create user-dialogs, using DTL Tags and ISPF services. 5. SPF is the predecessor to ISPF. But Shmuel, I am trying to keep it brief and concise. 6. The fact, that ISPF commands can be stacked, or chained has been elaborated in another article/tutorial, on the blog. 7. I shall correct the references section. 8. It puzzles me, when you said, *Time-sharing* need not involve * time-slicing*. Could you elaborate? Thanks, Quasar. On Mon, Nov 19, 2012 at 8:43 AM, Shmuel Metz (Seymour J.) < [email protected]> wrote: > In > <CA+Myz1Udc_9ddoR=6LpXkA=9jak+xap2fya9hccvpwkmzk0...@mail.gmail.com>, > on 11/18/2012 > at 11:18 PM, Quasar Chunawala <[email protected]> said: > > >*Hi Mike and Schmuel - * > > That's Shmuel! > > >GC27-6939-10_MFT_Guide_R21.7_Mar72 > > IBM System/3S0 Operating System MVT Guide OS Release 21, GC28-6720-4, > would be more relevant to TSO; you can find it and several others on > bitsavers. > > >http://www.mainframes360.com/2012/11/tso-and-ispf.html. > > The first thing I see is that much of the material, some incorrect, > seems to come from wikipedia. I would advise looking at original > sources as much as possible. > > Time-sharing need not involve time slicing and that time slicing can > be used even without time sharing. > > IBM announced SSS, MSS and MPS as options early on. Do you have any > documentation suggesting that it was not originally planned that way? > > IBM issued sevaral releases of TSS/360 and even had a PRPQ for TSS/370 > before they cancelled it. TSS performance was considerably better by > then. > > TSO sessions usually involve I/O and contention for resources; the > user[1] surrenders control of the CPU when he is waiting and some > other session[2], or a batch job, can use it. When contention or a > wait is resolved, the session becomes eligible to be dispatched. I've > never seen a system running TSO where there were as many processors as > there were TSO regions. > > Interactive System Productivity Facility came late in the game; it > would be better to refer to Structured Programming Facility and > replacements. Also, an important part of ISPF is the ability to write > your own panel-based applications. > > ISPF users quickly learn to chain options, e.g., at the main menu they > will type "3.4" ENTER rather than "3" ENTER "4" ENTER. > > The references should include links and "IBM Manuals on MFT" should be > replaced by a list of relevant MVT manuals, with links. > > [1] Actually, the specific task, but to a first approximation only > one task in the session will be ready. > > [2] This is handled the same way as for batch jobs. > > -- > Shmuel (Seymour J.) Metz, SysProg and JOAT > Atid/2 <http://patriot.net/~shmuel> > We don't care. We don't have to care, we're Congress. > (S877: The Shut up and Eat Your spam act of 2003) > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
