lboc

w zeszłym miesiącudiscuss

I think Intercomm is bundled in the TK5 distribution of MVS 3.8 now. They got clearance from the owners a while back as I recall.

I'm assuming it's the same Intercomm you're talking about.

lboc

2 miesiące temudiscuss

The s390x Linux install under z/VM boots from a virtual card reader, from cards generated by a virtual card punch from the installation files.

lboc

8 miesięcy temudiscuss

Me too. Status page predictably claiming 'All systems operational'!

lboc

w zeszłym rokudiscuss

A good summary from the UK IT trade publication that broke the story:

https://www.computerweekly.com/feature/Post-Office-Horizon-s...

Not sure if this requires sign-in/subscription, so apologies in advance. I did neither and have access to the full article.

lboc

w zeszłym rokudiscuss

Wow, Kilostream. There's a name I never thought I'd hear again :-)

lboc

w zeszłym rokudiscuss

There's a bunch of documentation for MVS 3.8J (or OS/VS2) on Bitsavers.

IBM provide free 1-year Z access via the Zxplore program.

lboc

w zeszłym rokudiscuss

Haven't used it for a couple of years, but I think it's still a free login ID with 1-year validity. You can re-apply every year.

lboc

w zeszłym rokudiscuss

Are we to assume you want it to run on actual hardware? I imagine there are a number of OSes that qualify if emulation is acceptable. One I like:

http://www.vm370.org/

Full S/370 assembler source included.

lboc

2 lata temudiscuss

Seems to be replicating mainframe JCL and in-stream data sets. Processing instructions and input are combined in a single file. Used all the time for compiling, running utilities etc.

I'm guessing that this (IBM) example is setting the delimeter to '@@' to avoid problems with the comment - JCL also understands the '/*' sequence. I've not seen it used with other languages (Cobol etc.)

    //jobname    JOB   acctno,name...
    //COMPILE    EXEC  PGM=CCNDRVR,
    // PARM='/SEARCH(''CEE.SCEEH.+'') NOOPT SO OBJ'
    //STEPLIB    DD    DSNAME=CEE.SCEERUN,DISP=SHR
    //           DD    DSNAME=CEE.SCEERUN2,DISP=SHR
    //           DD    DSNAME=CBC.SCCNCMP,DISP=SHR
    //SYSLIN     DD    DSNAME=MYID.MYPROG.OBJ(MEMBER),DISP=SHR
    //SYSPRINT   DD    SYSOUT=*
    //SYSIN      DD    DATA,DLM=@@
      #include <stdio.h>
      ⋮
      int main(void)
      {
      /*  comment   */
      ⋮
      }
    @@
    //SYSUT1     DD    DSN=...
    ⋮
    //*

https://en.wikipedia.org/wiki/Job_Control_Language#In-stream...*

lboc

3 lata temudiscuss

Yes and Yes. Though there are options to get to the Unix shell via tn3270 too.

lboc

3 lata temudiscuss

This is a reasonable introduction.

https://www.ibm.com/z/resources/zxplore

There's also a bunch of (sign-in required) free training at learn.ibm.com. And I think there's something on Coursera too.

lboc

4 lata temudiscuss

I've seen it done fairly often in mainframe assembler - embed an 'eyecatcher' string near the top of your program and jump to the real entry point. Used as an aid for debugging when reading dumps I believe. Not generally program data though, ususally metadata like program name, author, date assembled etc.

lboc

4 lata temudiscuss

Agreed. I've only limited experience with i, but more with z. After using them, the other OSes you might use start to look and feel pretty similar to each other.

lboc

4 lata temudiscuss

z/PDT and zD&T will run current z/OS under emulation on Linux. The ADCD for use with those products includes almost all the IBM software you'd come across in a mainframe environment:

http://dtsc.dfw.ibm.com/adcd/adcd.shtml

https://www.youtube.com/watch?v=tI5jk-1OI-g

https://ibm.github.io/zdt-learners-edition-about/

lboc

4 lata temudiscuss

zxplore is a free z/OS course (what used to be called 'Master the Mainframe'):

https://ibmzxplore.influitive.com/users/sign_in

Also a bunch of free courses here:

https://learn.ibm.com/

(free registration required)

(EDIT) If you're in the US and meet the requirements (take free courses) you might also be interested in this for (I believe) $120/year:

https://ibm.github.io/zdt-learners-edition-about/

Email in profile if you want to know more.

lboc

4 lata temudiscuss

Go at least, is available for z/OS:

https://www.ibm.com/products/open-enterprise-sdk-go-zos

lboc

4 lata temudiscuss

One possible reason why: customers might want to be able to upgrade their hardware/OS/whatever and retain their 5 9s.

lboc

5 lat temudiscuss

Try this for a bunch of free z courses (with real machine access for labs)

https://www.ibm.com/training/

I've done 4 or 5 including z/OS and COBOL.

There's also:

https://www.ibm.com/it-infrastructure/z/education/zxplore

Which appears to be the replacement for the Master the Mainframe program. Includes real machine access.

Although it's usefulness in comparison to real z/OS access is debatable, you might also check out the TK4- system which is an old MVS packaged along with the Hercules emulator. A lot of stuff hasn't changed in z/OS, but a lot has.

http://wotho.ethz.ch/tk4-/

lboc

5 lat temudiscuss

Makes me think of:

https://web.archive.org/web/20010406062920/http://crank.com/...

Issue #2 and a follow-up in Issue #4.

lboc

5 lat temudiscuss

It mentions using 'cc' here:

https://www.ibm.com/support/knowledgecenter/ssw_aix_72/print...

An example using ksh:

https://www.ibm.com/support/knowledgecenter/ssw_aix_72/files...

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