I have used high level languages (PL/I, COBOL, Fortran, C) as well as assemblers (6502, VAX-11/750 macro, ICL System 25, IBM BAL, intel) - and also machine code for zaps and dumps - but I am now retired <grin>, thanks😊 .
On 20/05/2021 10:17, Lennie Dymoke-Bradshaw wrote: > Can I deduce from this that you don’t use high level languages? > But if so, then even using assembler is too easy. > Let's write everything in machine code 😊. > > Lennie Dymoke-Bradshaw > Reverse Sweep Consulting Limited > https://rsclweb.com > ‘Dance like no one is watching; encrypt like everyone is’ > > -----Original Message----- > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of > CM Poncelet > Sent: 20 May 2021 02:50 > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: JCL COND vs IF/THEN - Best catch up resources for MVS / ZOS > Technologies > > Again and with all due respect, progress is made not by blunting the tool but > by sharpening the user. > > "IF/THEN" does not handle all boolean AND/OR/NAND/XOR and steps-not-executed > conditions. > > Let not those who cannot master playing the violin demand that the violin be > made more easy, but let them try playing the banjo instead. > > And SMP/E? In the 1980's it was 'recommended' to use its dialogs. In the late > 90's, its Custom-Pak etc. became 'de rigueur' and 'de facto'. And yet I > continued to use only native SMP/E - and did so daily to track down and fix > PTFEs etc. etc. > > Who gains from this progressive and continual stultification of mainframe > systems programming? Is it not Windows for mainframes? > > As they say, "Use it or lose it." > > Cheers, Chris Poncelet (r) > > > > On 19/05/2021 01:55, Nash, Jonathan S. wrote: >> Once I learned of the IF/THEN statements for JCL I never used COND= >> again. IF/THEN is much easier to use and to explain to new people. >> I have seen many people code COND statements incorrectly because they >> did not acually understand how they worked. >> >> >> -----Original Message----- >> From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On >> Behalf Of CM Poncelet >> Sent: Tuesday, May 18, 2021 8:19 PM >> To: IBM-MAIN@LISTSERV.UA.EDU >> Subject: [EXTERNAL] Re: Best catch up resources for MVS / ZOS >> Technologies >> >> With all due respect, anyone who has difficulty coding JCL COND= >> statements should consider *not* working with IBM mainframe systems. >> >> All boolean conditional execution steps can be handled using only >> COND= statements. I submitted a paper on this & it was published in >> "Computing" in 1989. I would but cannot attach it, as uploading PDF >> files to this discussion list is not permitted. >> >> No sysprog worth his salt has ever had a problem with coding JCL COND= >> statements. >> >> Likewise IF/THEN statements belong in "JCL for dummies" - as do >> symbols in JCL and SYSIN. Ditto IF/THEN <etc.> in assembler. >> >> Chris Poncelet (r) >> >> >> . >> On 18/05/2021 14:02, Charles Mills wrote: >>> Yeah, and IF/THEN is slightly better than COND= >>> >>> Also symbols in SYSIN data. >>> >>> Charles >>> >>> >>> -----Original Message----- >>> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] >>> On Behalf Of Steve Horein >>> Sent: Tuesday, May 18, 2021 5:35 AM >>> To: IBM-MAIN@LISTSERV.UA.EDU >>> Subject: Re: Best catch up resources for MVS / ZOS Technologies >>> >>> I would argue JCL got better when symbols were allowed! :-) >>> https://www.ibm.com/docs/en/zos/2.4.0?topic=es-symlist-parameter >>> >>> On Mon, May 17, 2021 at 10:46 PM Charles Mills <charl...@mcn.org> wrote: >>> >>>> Steve, let me wade in here and suggest some big picture. I think >>>> SHARE and such is great for the details. >>>> >>>> What has changed since 2001? An idiosyncratic, IMHO list: >>>> >>>> - In 2001 SNA was yielding to TCP/IP. That transition has continued. >>>> An awful lot of mainframe connectivity is now TCP/IP. Lots and lots >>>> of Internet connectivity to the mainframe. >>>> - Security is huge. Encryption is hot. Zero Trust is the buzzword of >>>> the month. >>>> - Everything is of course bigger. Z hardware goes up to what? 4TB real? >>>> Someone will correct me if that is wrong. >>>> - Tape drives have pretty much gone away. They live on as virtual, >>>> emulated-on-DASD tape drives. >>>> - The Cloud. Read any airline magazine for the latest. >>>> - Remember VM? It was pretty moribund in 2001. It has found new life >>>> hosting thousands of Linux instances. Yes, Linux running like a >>>> champ on Z hardware. Mainframe Linux is huge. You can run Linux in a >>>> region of MVS in a "container." >>>> - Speaking of which, there is a Z box that will not IPL z/OS! It is >>>> called Linux One. It's a mainframe with a bit hobbled somewhere such >>>> that mainframe operating systems will not IPL, only Linux. >>>> - Lots of new features in core MVS but you would fully recognize the >>>> environment. If you sit down at a TSO/ISPF session it will seem like >>>> nothing has changed. JCL has not gotten any better (or any worse, >>>> thankfully). >>>> - Remember the issue of "above the (24-bit) line"? It is still >>>> there, but pretty much in the background. The new thing is data and >>>> execution "above the (2GB/31-bit) bar." Lots of software products >>>> are exploiting data above 2GB, and code can even run there, with lots of >>>> limitations. AMODE/RMODE 64. >>>> - IBM JES3 is dead. Long live Phoenix JES3 plus. IBM ditched JES3, >>>> and Phoenix picked it up. >>>> - More emphasis on high level languages. Hardware design is being >>>> driven by the Java folks and the compiler folks. Lots of new >>>> hardware instructions. Hardware cycle times are not getting any >>>> faster, but instructions do more per cycle. Caching getting more >>>> sophisticated and more critical. The concept of "how long does an LR >>>> take" has totally disappeared. It is a question with no answer other than >>>> "it depends." >>>> >>>> Anyone else want to weigh in? >>>> >>>> Charles >>>> >>>> >>>> -----Original Message----- >>>> From: IBM Mainframe Discussion List >>>> [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Gibney, Dave >>>> Sent: Monday, May 17, 2021 6:58 PM >>>> To: IBM-MAIN@LISTSERV.UA.EDU >>>> Subject: Re: Best catch up resources for MVS / ZOS Technologies >>>> >>>> I would suggest SHARE presentations and perhaps Marna Walle's >>>> migration guides >>>> >>>>> -----Original Message----- >>>>> From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On >>>>> Behalf Of Steve Estle >>>>> Sent: Monday, May 17, 2021 6:42 PM >>>>> To: IBM-MAIN@LISTSERV.UA.EDU >>>>> Subject: Best catch up resources for MVS / ZOS Technologies >>>>> >>>>> Hello Everyone in Mainframe Land, >>>>> >>>>> I've been out of the mainframe world since about 2001, but spent >>>>> the >>>> prior >>>>> 20 years immersed in that world working with everything from >>>>> MVS/370 to MVS/ESA and VM, performance and capacity planning >>>>> disciplines across a variety of situations in the IT Services and >>>>> consulting spaces. I, am, >>>> now as a >>>>> "IT Infrastructure Engineer- IBM z/OS Mainframe Engineer" after >>>>> nearly 20 years of other activities (Project Mgmt, entrepreneur, >>>>> etc) am about to potentially come back into a new mainframe role >>>>> and I need to catch up as quickly as possible. Any suggestions on >>>>> ways to fill in the gaps for >>>> ZOS, ZVM, >>>>> hardware, performance, etc? Bottom line I'm looking for that gap >>>> education >>>>> to as quickly as possible get up to speed with changes in platforms >>>> since 2001. >>>>> If prefer to call - all my info is below. >>>>> >>>>> Thanks, >>>>> Steve Estle >>>>> 303-604-0925 >>>>> sest...@gmail.com >>>>> >>>>> ------------------------------------------------------------------- >>>>> --- 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 >>>> >>>> -------------------------------------------------------------------- >>>> -- 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 >>> >>> --------------------------------------------------------------------- >>> - 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 >> >> ---------------------------------------------------------------------- >> 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 > > ---------------------------------------------------------------------- > 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
