Typically the new features reqiured by a level set were added over several generations, and each generation added more than one feature.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Tony Thigpen <t...@vse2pdf.com> Sent: Tuesday, September 1, 2020 3:25 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Architectural Level Sets IBM has had several Architectural Level Set points where there were significant changes to the CPU that prevented earlier operating systems from running on them. What CPU's were involved with each level, and what was the real underlying item changed on the CPU that forced a new level? (Let's keep it limited to z990 and newer.) Tony Thigpen ---------------------------------------------------------------------- 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
