Yes, except for a subset which allows CMS to run as a VM guest. For more information, see these topics in Principles of Operation SA22-7832-11 or SA22-7832-12:
Configuration-z/Architecture-architectural-mode (CZAM) facility ESA/390-compatibility-mode (ESA/390CM facility) These facilities are implemented on z14 and z15, and will be on whatever may follow. Jim Mulder z/OS Diagnosis, Design, Development, Test IBM Corp. Poughkeepsie NY "IBM Mainframe Discussion List" <IBM-MAIN@LISTSERV.UA.EDU> wrote on 08/03/2020 08:55:30 AM: > From: "Joe Monk" <joemon...@gmail.com> > To: IBM-MAIN@LISTSERV.UA.EDU > Date: 08/03/2020 09:16 AM > Subject: Re: z/VM guest with old z/OS > Sent by: "IBM Mainframe Discussion List" <IBM-MAIN@LISTSERV.UA.EDU> > > Jim, > > So has ESA/390 been eliminated from z/Architecture? > > Joe ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
