I'd recommend that you bookmark <https://www.ibm.com/docs/en/systems-hardware/zsystems>
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 עַם יִשְׂרָאֵל חַי נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר ________________________________________ From: IBM Mainframe Assembler List <ASSEMBLER-LIST@LISTSERV.UGA.EDU> on behalf of Dan Greiner <dan_grei...@att.net> Sent: Wednesday, June 18, 2025 11:20 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU <ASSEMBLER-LIST@LISTSERV.UGA.EDU> Subject: z17 PoO External Message: Use Caution The z17 version of the IBM z/Architecture Principles of Operation (SA22-7832-14), the IBM z/Architecture Reference Summary (SA22-7871-12), and other z17-related architecture documentation can be found at the following (thanks for the link Bruce): https://www.ibm.com/docs/en/systems-hardware/zsystems/9175-ME1?topic=library-2 I've successfully downloaded both without any sort of logon or IBM ID required.
