Відео

Where PDF?

is it possible to save COBOL source as a separate member, or is it mandatory to have it "in-stream" as part of JCL (speaking of this amazing TK5 distro)?

At my times @ EMC we 've had a feature called "SRDF" for disaster recovery. We copied disk unit data from one site to antoher in real time. Typically done via fibre or what you call it "ESCON". Failover scrips were provided by EMC in coop with the customer. Even Sysplex was covered.

In early 70s we had access to VM/370 in high school. I liked virtualization. Someone told me that someone managed to boot VM/370 inside itself 9 levels deep! Then when X86 hardware virtualization came out, I had to make it boot inside itself 10 levels and run Linux inside that (s.l.o.w.l.y) :D It was fun knitting pagetables.

Shame on you for replacing the actuel sound of a starting mainframe with the sound of a Boeing 747 !! Just kidding... I'm a mainframe engineer :D What about the electricity bill for that month ? how much million euros did you pay ?

Thank you for this tremendous work!

A thought: Is the StartTrek game the line-mode version? I took a linemode version and recoded it for 3270 fullscreen on DOS/VS using COBOL (main logic), FORTRAN (math functions) and some assembly subroutines (I think the 3270 i/f was assembly). I wonder if I can find that code and if it can be recoded for VM/370.

Does anyone have a REXX for VM/370?

Very excited about this video. Will install this, too. That's because of having so much fun in programming on serveral platforms. MVS is completely new for me. As you mentioned the 4381 I immediately remembered the time as I was support technician at ECONOOM (later Thomainfor). I've exchanged 3370 (FBA) HDA's connected to the 4381. Normal operations for me were midrange computers like the /38 and AS/400.; so changing the HDA on the mainframe was different - you needed the maintenance devive from IBM to to this. Later on I've learned RPG..... Until the early 2000s I was SE at EMC Corporation for AS/400 and UNIX systems. I've seen the config-files for our Symmetrix for IBM mainframe. All CKD devices with the size of 3GB emulating the 3380 DASD. Shook my head. One physical disk on Symmetrix could hold many of that chunks of 3GB....

@34:48 "z" stands for "zero down time" because the architecture was design to never go down.

Is there any chance you have Stoney Brook Pascal (compiler) documentation somewhere ? The PC/DOS version of it.

Thank you very much for this excurse to the Mainframe world of OSes. I had no idea how simple that machines were in the beginning. I come from the other line of IBM machines - that midrange things called S/36, S/38 and AS/400. Interesting is, that these machines are backwards compatible until today with iOS in the System i. Memory in this machines (S/38 and AS/400) is also called "storage". Single-level-storage. But this would go too far and interests no one in the mainframe business. By the way: The System i is also capable to drive thousands of terminals and printers......

@moshix: great video. Tnx. Is there also source code available for whithin z/vm?

What keyboard are you using? I like that sound!

If I could propose an improvement... 22:34 - BREXX/370 supports integer arrays created with ICREATE, and this function returns (effectively) a pointer to that array. Integer arrays having size width*height, containing 1 or 0, could also work as a Game of Life board state. It's possible to pass the pointer to a function for displaying the board. Note that the arrays are 1-indexed, so instead of IGET(arrayPointer, y*width+x) we must use IGET(arrayPointer, y*width+x+1) if x and y are zero-based. Source: I'm working on a puzzle game for TK5 written in Rexx and I used the integer arrays for keeping the board state.

I love using CRT-3270 emulators to interface with mainframes 🤓 feels like I'm in the matrix

Pl/I is one of the best programming languages ever made. There is a pre-processor feature that is amazing. I programmed PL/I for years.

For me, it will always be Xedit/Kedit. I did start out with ISPF and when I changed jobs where VM was the development. Xedit opened a whole new world, and it was wonderful. Then the company removed VM and I had to go back to ISPF. I just couldn't get used to it again, maybe I didn't give it a change. Fortunately, Kedit for the pc was established and stable. 44 years later that is what I use intensely, every day.

I also have used a lot of editors and think the ISPF editor is my favorite. I had a copy of spf/pc under dos that doesn't seem to be around any more. I do have a windows program called SPFlite2 that works pretty well and I found not too long ago. I always thought that ISPF should have been written on a PC, but then be able to edit either on the workstation or some other server/mainframe, simply by giving a pc or mf filename. Maybe that can be done through ftp or something these days. One of my favorite besides move over was the TS command to split a line and then flow it later.

Nice presentation and history lesson. I learned stuff I did not know. Worked for DEC for many years , Apple, and IBM Spent 15 years with DEC and 18 Years with IBM Ricky from IBM(retired)

Hi, thank you for this great video. Did you think about backinh up this tape image on web archive? It would be great if we could all try this compiler in mvs emulators. Best regards

I used Turbo Pascal (and then Free Pascal) as a kid :) I still have two books with tutorials (in Polish) somewhere on the shelf.

Never did Pascal on a mainframe. Started with Tiny Pascal on the TRS80, then Waterloo Pascal on a SuperPET for comp sci classes, then Turbo Pascal on cp/m and pc’s. MODULA-2 was supposed to take over , at one time…

Turbo/Borland Pascal is GOAT !

The Korn Shell developer was David Korn, still around, he will be 81 in August. en.wikipedia.org/wiki/David_Korn_(computer_scientist)

I found Pascal (P6000) too verbose so I wrote a C compiler in Pascal. This was in 1982 when I was working at Imperial College Computer Centre.

Just starting to watch, but I am absolutely flabbergasted that a tape from Way Back Then is still readable! Apparently without error. Yeah, IBM really did make solid iron.

goto in Pascal??? Ah, what the sacrilege!!! Just joking, thanks for the very interesting video! Also, I'm very glad that you went with Rob Prins TK, I was promoting his work for the long time (not that anyone listens to me, but still...) I had a lot of health issues (old fart me), but I hope I'll be back online soon promoting your channel and MVS/TK. All the best, my dear friend and teacher!

I wish I could have a merge of VIM and the ISPF PDF editor. But I miss XEDIT too.

I loved PL/I. Pascal confused me at times due to the concept of "statement ending" vs. 'statemen separating" things. I kept putting PL/I semi-colons where they didn't belong.

Watching this video was great! But it really drove home why the advent of Lisp Machines and Smalltalk were so radically revolutionary in their day. Today, I thank my lucky stars that I have a wonderful Lisp environment to live in. The video reminded me to thank the computer gods...

Holy Smokes! This takes me back more than 50 years! I see you operating a virtual mainframe from a modern workstation. How do you tolerate the massive slowdown in factor going so far back in time? I remember working for IBM, and I do remember their mindset as being that theirs is the only way. But I also remember the 1980's jolting IBM into using 3rd party chips and software.

I did a lot of programming with Borland Pascal (and other compilers), but my introduction to PASCAL happened in the Faculty/Graduate TN3270 job entry room for the Amdahl. There was a grad student (like me) from Jaipur who would nap on the bench (after Midnight) waiting for the next run of her PASCAL program to print out. *I didn't know PASCAL,* but when she got stuck, I would look at her code logic and ask her questions ... until she would see how to fix it! That would be 1984. :^)

Hi, great video. Just a note, should be 1403.bitnet.systems not 1403.bitnet.system😀

Moshix, Korn shell is from the first half of the 80s ie 82ish and was written by David Korn.

UCSD Pascal for me; actually went to UCSD to get my copy.

pascal and basic were what i learned on :) the history of fortran compilers is actually really interesting too

Long live hercules

At Andor Systems, we developed out CacheXchange DaSD controller based upon the 370xa instruction set using a process we called compiled code simulation using Pascal …

Can I connect MVS from a computer to another computer?

4:41 by coincidence I had the Dune 2 - Eclipse Soundtrack playing in the background... perfect match

I was a mainframe operator at Eddie Bauer for 18 years. I actually loved it.

Thanks for the tutorial! I was following the instructions for FTP on TK5 to upload a Rexx script, the command /start ftpd,srvport=2100 does not work, command /s ftpd works (the default port is 2121).

I worked on Z12 for a french bank, we had to do the IPL every week, and for each time change, because, they really wanted us to do that :/

@moshix/Matthew: 0. Is it possible to install and run z/OS in an emulator ? 1. Does compiler on z/OS+USS create a compatible ELF-binary for Linux ? 2. Will S/390 ELF-binary created on z/OS+USS work on Linux S/390 ? 3. Will S/390 ELF-binary created on Linux S/390 work on z/OS+USS ? Thx.

Is USS included to the image? Thx.

Thanks for that tutorial :) I started learning Rexx running on TK5, partly following the instructions in the Game of Life video, but I got stuck at the PULL command not being able to get data from the user, returning an empty string immediately. Maybe it's a very stupid beginner mistake. I'll try FSS instead ;)