I managed a z/OS 1.6 system running on a P/390... On Sat, Jan 14, 2023, 19:41 Radoslaw Skorupka < 00000471ebeac275-dmarc-requ...@listserv.ua.edu> wrote:
> z/OS 1.4 - last system with so called bimodal accomodation - a right to > run in 31-bit mode on 64-bit machine. > z/OS 1.5 - last system able to run on 31-bit machine. > z14 - first machine which disabled ESA/390 mode for IPL. z/OS 1.13 was > the first which run on z14. > > Of course this is a little bit off-topic, since the original question > was about VSE 6.3 :-) > To complement, z/VSE 6.2 supported up to 10 CPs, but used only up to 4 > CPs. That means it will not run on 11+ CPs LPAR, but on i.e. 8-CP LPAR > it will run and use max. 4 CPs. Up to 32GB of memory, however you could > assign more to the LPAR. The rest will be unusable. > > -- > Radoslaw Skorupka > Lodz, Poland > > > > > W dniu 15.01.2023 o 01:36, Mike Schwab pisze: > > OS/390 v2.10 had PTFs to add 64 bit mode. > > z900 announcement z/OS 1.01 had 64 bit mode included. > > Default 64 bit with 1.04. > > About 1.10 64 bit required. > > z14 Around 2.01 IPLed in 64 bit. > > > > On Sat, Jan 14, 2023 at 5:07 PM Steve Thompson <ste...@wkyr.net> wrote: > >> I get the understanding that it and the current release of z/VSE > >> from IBM are effectively the same (kinda like OS/390 V2.10 and > >> z/OS 1.1 -- assuming my memory is correct on the last release of > >> OS/390): > >> > > ---------------------------------------------------------------------- > 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
