11 fJ.L.1..1. I, I , Starter systems Step 25. Obtaining the MSS Communicator Program
If there is an MSS attached to your VM/370 system, and you plan to use
the DMKMSS program for communicating between the VM/370 control program
and the MSC, enabling VM/370 to dynamically mount and demount MSS volumes, you should obtain the file which will install the DMKMSS program in a VS system. The required file is distributed with the VM/370 control program object code, which you previously restored to
MAINT's 1q4. The first step is to ensure that MAINT has access to its
194. Issue the CMS command:
access 194 d/a
Next, punch the file; this will install DMKMSS in your VS system. If
your VS system is OS/VS1, issue the command:
punch mssvs 1 jcl
If your system is OS/VS2, issue the command:
punch mssvs2 jcl
The punched output you receive is a series of OS/VS jobs. This file
must be saved. When you execute the jobs in your OS/VS system, they
will install the DMKMSS program and create a VS operator procedure
called DMKMSS, later used to start the program in the communicator
virtual machine. OS/VS 1 JOBS There are four OS/VS1 jobs. They are: • LINKDMK -This job link edits the object code for DMKMSS into the SYS1.LINKLIB data set; the load module name is DMKMSS. The DMKMSS program must be located in SYS1.LINKLIB; this is one of the
requirements of APF (Authorized Program Facility). • DUMPT - This job prints two lists (named IEFSD161 and IEF161SD) in
the system program properties table. These lists are used in the
next job. • APFZAP - This job, as distributed with VM/370, replaces the module IEHATLAS and DMKMSS in the program properties table; this adds DMKMSS as an authorized program and removes IEHATLAS. If your installation
wishes to retain IEHATLAS as an authorized program, examine the lists
produced in job DUMPT above. Change the control statement provided
in APFZAP to add DMKMSS rather than replace IEHATLAS. • LINKPROC - This job adds the procedure DMKMSS to the SYS1.PROCLIB data set. You must place the communicator device address on the COMM control statement before running this job. After the job has
completed, the OS/VS1 system operator may start the DMKMSS program by
issuing the command' START DMKMSS. P*' where * is the number of the
partition in which DMKMSS is to run. 260 IBM VM/370 Planning and System Generation Guide

starter Systems OS/VS2 JOBS There are two OS/VS2 jobs. They are: • - This job link edits the object code for DMKMSS into the SYS1.LINKLIB data set; the load module name is DMKMSS. In OS/VS2, this linkedit provides the necessary APF authorization • • LINKPROC - This job adds the procedure to the SYS1.PROCLIB data set. After this job completes, the OS/VS2 system operator may
invoke the program by issuing the OS/VS2 operator command 'START Before you run job LINKPROC, you must place the
communicator device address on the control statement. Part 3. Generating VM/370 (CP, eMS, RSCS, and IPCS) 261