Subj : Turnkey MVS/380
To   : All
From : Miken
Date : Wed Apr 26 2017 18:33:00

Hello All,

so I've decided to emulate a Mainframe. On the first sight quite a difficult 
task. And it is indeed. One has to know what one is doing. Or follow a
tutorial.

I've searched a bit. And I found kind of boost to my Mainframe first steps.
There is a prepared solution on how to run a mainframe. It's called MVS/380.
I hope it'll give me a taste of on howto operate a mainframe.

It's a family of freely-available 31-bit mainframe operating systems. Currently
it includes MVS/380, VM/380 and VSE/380.

You can find it here:
http://mvs380.sourceforge.net

My entry-point to OS/380 world was here:
http://mvs380.sourceforge.net/s380diagram.html
(it's a tree diagram on what to choose).
The path should hopefully lead to MSV/380 on my personal computer.

I downloaded the turnkey-mvs-3.zip (that cointains the iso).
http://www.ibiblio.org/jmaynard/turnkey-mvs-3.zip

After mounting the iso there was a possibility to install MSV 3.8 using the ./s
tup in the mounted folder.

After answering few questions I've been offered to run MSV 3.8 using one of the
following commands (in the destination directory):
startmvs (for console) or xstartmvs | kstartmvs for GUI

After that there is following requirement:

>> Do not IPL until you have started all the clients needed 
>> to successfully start MVS:
>>  a)  A standard telnet client to this host on port 3270
>>  b)  Two tn3270 clients to this host on port 3270 as consoles
>>  c)  Additional tn3270 clients as TSO terminals

That means I needed to run three terminals and connect three times to Hercules:
T1$ telnet localhost 3270
T2$ c3270 localhost:3270
T3$ c3270 localhost:3270

Hercules prompt responded with following:

HHCTE009I Client 127.0.0.1 connected to 3215 device 0:0009
HHCTE009I Client 127.0.0.1 connected to 3270 device 0:0010
HHCTE009I Client 127.0.0.1 connected to 3270 device 0:0011

And then in Hercules I was finally ready for IPL (Initial Program Load)

ipl 148

Then I just followed the howto from the MSV/380 iso...

And after some time ... MSV/380 has been started:


   IEE102I 19.07.37 17.116 ACTIVITY     FRAME LAST         F      E     1A
      00006 JOBS    00006 INITIATORS
     CMD1     CMD1     CMD1      V=V
     JES2     JES2     IEFPROC   V=V
     BSPPILOT BSPPILOT IEFPROC   V=V  S
     MF1      MF1      IEFPROC   V=V  S
     NET      NET      IEFPROC   V=V
     TSO      TSO      STEP1     V=V  S
      00000 TIME SHARING USERS
      00000 ACTIVE  00008 MAX VTAM TSO USERS

  IEE152I     ENTER     CANCEL     D C,K

.... Next time I'll give it a try and login TSO (whatever it is...)

Best regards

Miken

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