z/OS uses a DIAG to communicate with the HMC; this is true even when running on a bare LPAR. I'm not aware of any publicly available documentation.
Do you have a CONSOLE with DEVNUM(HMCS) or DEVNUM(SYSCONS)? -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Phil Smith III [li...@akphs.com] Sent: Wednesday, July 26, 2023 5:39 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Ignorant z/OS question Berry van Sleeuwen wrote, in part: >I guess it doesn't really matter what address you use, especially for >Guest Operating Systems, as long as they are defined in their >respective configuration members (CONSOLxx for z/OS, SYSTEM CONFIG for >z/VM, IPL proc for z/VSE). Right. I'm betting that z/OS (which does know when it's running under VM) does a DIAG x'24' to find where the actual console is even if it doesn't match CONSOLxx. ---------------------------------------------------------------------- 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
