VM!370 Directory Source File j (fn DIRECT fm)
By using the directory program, an installation converts sou rce
statements into the
VM!370 system
directory file. VM/370 Directory Entry USER DOSUSER DOSPWORD 320K CONSOLE 01F 3215 SPOOL OOC 2540 R , SPOO L OOD 2540 P , SPOOL OOE 1403 J MDISK 13033301 100 VMPK01 MDISK 131 33302050 VMPK02} MDISK 13233307030 VMPK02 DEDICATE 007 007 VM/370 Storage r---, I Virtual I Storage I I I 320K I i L __ ..J I Virtual Console I I Virtual Card Reader ( OOC I I I L ____ ..J Virtual Card Punch rOOD I L ____ --1 Virtual Printer I "" __ - --' J Real Device Dedicated
to DOSUSER Figure 13. Relationship of VM/370 Directory Entries
Section 1. General Considerations 39
UNIQUE DIRECTORY ENTRY CONSIDERATIONS This topic lists directory control statements in their logical order of
appearance in a directory entry. It describes only those statements with unique ccnsideraticns for running an operating system in a virtual
machine.
The USER centrol statement has no unique considerations for running an
operating system in a virtual machine.
The ACCOUNT centrel statement has no unique considerations for running
an operating system in a virtual machine.
The OPTION central statement allows virtual machine users to specify
certain optiens and features for their virtual machines.
The ACCT option allows one user to charge another user for virtual
machine reseurces. For example: If the machine is performing a batch
type operation, a virtual machine user can generate job accounting cards
fer each jcb processed. To generate accounting cards for a virtual
user, refer to the for a discussion of
DIAGNOSE code X'4C'. Specify the ECMODE option if the virtual machine uses an operating
system that: Runs in extended control mode Uses dyna mic add re ss tra nsla tion (DA T) Uses extended control registers other than zero Addresses I/O channels 6 through 15
If this optien is not specified in the directory, a user can enter EC mede by issuing the CP SET command with the ECMODE operand: #cp set ecmode on When the ECMODE option is specified for a virtual machine, the saved segments cf the virtual operating system are shareable. 40 IBM VM/370 Operatin1 Systems in a Virtual Machine
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