> It would set the long-term model for the > mainframe, instead of being stuck with > 24/31-bit software for eternity.
32 bit mode would have been a good idea in the initial S/360 design, and IMHO its lack was a serious blunder. Shoehorning it into the existing software at this point in time would be a kludge and a short term one at that. The long term model is 64 bits unless memory and DASD prices go down drastically. > I don't agree. Existing applications can be > modified to be 32-bit clean Only if the never use storage above the line for parameters. > I don't agree that all new applications should > be 64 bit. That is overkill. 32-bit/4 GiB should > be enough for almost all commercial applications. 31 bit/2 GiB should be enough for almost all commercial applications. Those that need more will need lots more, and it is a pipe dream to believe that doubling the size of the address space will be enough for long. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Paul Edwards <mutazi...@gmail.com> Sent: Thursday, April 4, 2019 7:19 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: AMODE 32 On Thu, 4 Apr 2019 13:55:30 +0300, Binyamin Dissen <bdis...@dissensoftware.com> wrote: >What problem would this solve? It would set the long-term model for the mainframe, instead of being stuck with 24/31-bit software for eternity. >This would be of zero use for existing applications, I don't agree. Existing applications can be modified to be 32-bit clean and have maximum possible address space as per 32-bit. > and new applications should simply use 64 bit. I don't agree that all new applications should be 64 bit. That is overkill. 32-bit/4 GiB should be enough for almost all commercial applications. BFN. Paul. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
