Peter Relson/Poughkeepsie/IBM@IBMUS wrote on 10/13/2011 08:08:01 AM: > 10/13/2011 07:35 PM > Subject: > Re: newer opcodes > It is true that all z/OS releases can run on any z/Architecture-capable > machine. > > Peter Relson > z/OS Core Technology Design
That's not quite true. While it is true that all z/OS releases run on the oldest z/Architecture-capable machine, and the all *currently supported* z/OS releases can run on any z/Architecture-capable machine, it is not the case that all old, unsupported z/OS releases can run on newer machines. For example, z/OS 1.7 is the oldest release that can run on a z196 or z114, because the IPL will fail without a fix for the problem described by APAR OA30777. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY
