On 26 Feb 2010 17:59:33 -0800, in bit.listserv.ibm-main you wrote: >IBM was about to sunset VSE a few years ago until it found out that in >mainland China, VSE was the operating system of choice. > >Given their population, I don't think it will be disappearing anytime soon. > >And to think it all was just a mistake from the beginning. > >Back in the days when 3rd generation was "about to walk upon the scene" and >OS was being developed by an outside source, IBM was concerned it was too >big an undertaking and I might never even come into existence. > >So that they would not lose the chance to steal the market from UNIVAC which >was the vendor of choice in those days and the favorite to win the 3rd >generation race to the marketplace, they hastily developed DOS internally >just in case and brought it out first.
There also was the little detail that DOS360 could run on 16K and 32K machines while OS360 required a minimum of 64K (and I THINK that was with PCP). Both have evolved since then but I wouldn't be surprised to find that the minimum configuration for zVSE is still much less than that for zOS. > >Unfortunately, it has always lacked at least one major control block, the >DEB and so tech support has always been shackled with the burden of manually >keeping track of every cylinder and track. > >Though now it has been mitigated. > >Something OS bigots refer to as the DOS mentality. > > > > >On Fri, Feb 26, 2010 at 6:20 PM, Frank Swarbrick < >[email protected]> wrote: > >> When you refer to z/dos, do you mean z/VSE? >> We are migrating this year from z/VSE to z/OS. >> I never thought VSE was that great until this project. z/OS has a lot of >> good stuff, but it also has a lot of annoying limitations (odd >> restrictions). >> -- >> >> Frank Swarbrick >> Applications Architect - Mainframe Applications Development >> FirstBank Data Corporation - Lakewood, CO USA >> P: 303-235-1403 >> >> >> On 2/25/2010 at 11:07 PM, in message >> <[email protected]>, Ed Gould <[email protected]> >> wrote: >> > In the most recent issue (arrived in todays mail) of Z Journal there is a >> > decent article on TPF. >> > >> > I just looked and its not posted online yet at mainframezone.com . >> > >> > What else is interesting and quite comical (at least to me) is an article >> > about issues with z/dos (or whatever IBM calls it now days). >> > The rather odd restrictions that still haunt the dos people to this day. >> At >> > least with MVS the restrictions are few and far in between. >> > I still amazed that dos has continued to hang on to this day. I suspect >> that >> > the die hard dos fans will retire before converting to Z/os. >> > >> > Ed >> > >> > >> > >> > >> > ---------------------------------------------------------------------- >> > For IBM-MAIN subscribe / signoff / archive access instructions, >> > send email to [email protected] with the message: GET IBM-MAIN INFO >> > Search the archives at http://bama.ua.edu/archives/ibm-main.html >> > >> >> >>> >> >> The information contained in this electronic communication and any document >> attached hereto or transmitted herewith is confidential and intended for the >> exclusive use of the individual or entity named above. If the reader of >> this message is not the intended recipient or the employee or agent >> responsible for delivering it to the intended recipient, you are hereby >> notified that any examination, use, dissemination, distribution or copying >> of this communication or any part thereof is strictly prohibited. If you >> have received this communication in error, please immediately notify the >> sender by reply e-mail and destroy this communication. Thank you. >> >> ---------------------------------------------------------------------- >> For IBM-MAIN subscribe / signoff / archive access instructions, >> send email to [email protected] with the message: GET IBM-MAIN INFO >> Search the archives at http://bama.ua.edu/archives/ibm-main.html >> ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
