I would guess that if it works but is not documented then who knows. There is no guarantee that it does not stop working at some point in the future.
Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Binyamin Dissen Sent: Saturday, February 12, 2022 10:54 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Registers at entry to subtask (from ATTACH) The manual (MVS Programming: Assembler Services Reference, Volume 1 (ABE-HSP)) states 2-12 Used as work registers by the system. but I am looking at some old functional code which seems to expect (several?) registers values at ATTACH time be passed as is to the subtask. Can someone enlighten me as to whether this is luck or an undocumented API. I prefer to follow the old adage - if it ain't broke, don't fix it. -- Binyamin Dissen <bdis...@dissensoftware.com> http://www.dissensoftware.com Director, Dissen Software, Bar & Grill - Israel ---------------------------------------------------------------------- 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
