IIRC when I moved from program product support to MVS support around 1993 I went to an IBM class for MVS installation and configuration, HCD was introduced on the last day of class, from then till about 1998 or 99 you could still export / import the text of your MVS IOGEN to / from HCD, on or about 2001 HCD I believe was mandatory, folks still found a way to export the GEN, make changes, IMPORT that GEN and create the IOCDS from that gen. Carmen Vitullo
-----Original Message----- From: Jim <d10j...@us.ibm.com> To: IBM-MAIN <IBM-MAIN@LISTSERV.UA.EDU> Date: Thursday, 10 December 2020 12:16 PM CST Subject: Re: does anyone recall any details about MVS/XA? MVSCP became available in SP 2.2.0 I think MVSCP was mandatory in SP 2.2.0. Looking at the IEAIPL40 and IEAIPL41 IRIMs that were introduced in SP 2.2.0, I don't see anything that suggests that the old SYSGEN method for creating and I/O configuration as part of IEANUC0x continued to be supported. MVSCP was gone in SP 5.1.0, so that was when HCD became mandatory. HCD did not call MVSCP. My recollection is that HCD was introduced in SP 4.1.0, but I haven't found a way to verify that. Lots of MVSCP info here: http://www.bitsavers.org/pdf/ibm/370/MVS_ESA/GC28-1817-1_MVS_ESA_Configuration_Program_Guide_and_Reference_Dec89.pdf Some SYSGEN info here: http://bitsavers.trailing-edge.com/pdf/ibm/370/MVS/SR20-4674-1_Guide_to_MVS_SP_System_IPO_SYSGEN_Student_Text_Jul82.pdf Jim Mulder z/OS Diagnosis, Design, Development, Test IBM Corp. Poughkeepsie NY > Does anybody remember > When MVSCP became available? > When MVSCP became mandatory? > When HCD became available? > When HCD became mandatory (or does it call MVSCP under the covers?) > > > -- > Shmuel (Seymour J.) Metz > http://mason.gmu.edu/smetz3 ---------------------------------------------------------------------- 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
