Actually, they started under MVS with 8MiB user memory or so. Plus splitting different applications into their own regions to isolate, close certain partition at specified times for batch and backup processing, etc.
On Fri, Apr 5, 2019 at 11:55 AM Paul Edwards <mutazi...@gmail.com> wrote: > > Hi Mike. > > I'm trying to understand why some sites > are running multiple CICS regions because > 2 GiB is not enough. Yet they haven't > gone to AM64. I want to know if they > would be interested in going to AM32 > instead, if it were available. Can you > elaborate? If AM32 was more practical > for them, they would be able to halve > the number of CICS regions they have. > > BTW, Rob Prins recently updated his > 47,000-line RPF assembler program to > make it AM32-clean, and it required > very little effort. He was using "VL" in > a variety of places, but the things he > was calling were not actually variable > parameter functions, so he just needed > to delete the VL. No rewrite was > necessary, as would be required if > moving to AM64. > > Thanks. Paul. > > > > > On Fri, 5 Apr 2019 02:41:15 -0500, Mike Schwab <mike.a.sch...@gmail.com> > wrote: > > >If you are wanting to run in AM64 and use 32 bit constants, that is > >certainly possible. You will then be limited to incrementing > >registers by 4GiB or less. Just establishing addressability will need > >to set all 64 bits. > > > >On Thu, Apr 4, 2019 at 2:40 PM Paul Edwards <mutazi...@gmail.com> wrote: > >> > >> On Thu, 4 Apr 2019 19:32:01 +0000, Martin Packer > >> <martin_pac...@uk.ibm.com> wrote: > >> > >> >They will be (running 64-bit). However, apart from Db2*, much of their > >> >virtual storage components can't tolerate being above the bar. > >> > >> Which virtual storage components can't tolerate > >> being above the bar, and why is that and what > >> would need to change? > >> > >> Thanks. Paul. > >> > >> ---------------------------------------------------------------------- > >> For IBM-MAIN subscribe / signoff / archive access instructions, > >> send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > > > > > > >-- > >Mike A Schwab, Springfield IL USA > >Where do Forest Rangers go to get away from it all? > > > >---------------------------------------------------------------------- > >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 -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
