!Qte: If the ROE option is in effect for DOS/VS Release 34 (or earlier),
wait until after responding to the ROE messages before disconnecting
the DOS/iS virtual machine. Then, enter CP mode, using the attention
key, and enter the SET RUN ON and DISCONN commands:
! ! CP set run on
disconn
The DOS/VS virtual machine continues to run. RETURNING TO ces A user can now use the VM/370 logon procedures to reconnect to the virtual machine. During logon, this message appears instead of the normal LOGON message:
RECONNECT AT 11:05:02 EST TUESDAY 02/28/76 To return te the CMS environment and continue working, enter the BEGIN
command.
To see if the virtual machine that is set up to run DOS/VS is
running, issue this command: query dostest1
After issuing this command, a user can continue to use CMS (or some
other operating system) in this virtual machine.
If desired, users can again disconnect the CMS virtual machine and
reconnect onto the DOS/VS virtual machine. For example: A user knows
that the jcb stream being executed may pause to require an operator
response. Or, a user may use CMS to spool another job to DOS/VS. Then,
a user may need to reconnect to the DOS/VS virtual machine to alert DOS/VS to begin reading from the card reader.
After reconnecting, issue the BEGIN command for the DOS/VS virtual
machine to resume execution .• DISCONNECTION CONSIDERATIONS When using mere than one userid to alternate between two operating
systems, consider: • How DOS/VS may read additional jobs from the card reader? • What happens when there is a read from the console of the tCS/VS virtual machine? • What happens to the console log of a disconnected virtual machine? 102 IBM VM/370 Operating Systems in a Virtual Machine

When running disconnected, a user must reconnect to the DOS/VS virtual machine to enter the interruption that causes DeS/VS to continue
reading jobs.
To use CMS to spool jobs to a disconnected DOS/VS virtual machine,
sFool the reader of the DOS/VS machine with the CONT operand:
spool reader cont
Then, if another job is received in the card reader of the DOS/VS machine befcre the currently executing job stream has completed, the job
just received is also read and executed. Thus, when running a series of
jcbs in a single job stream and the reader is spooled with the ceNT
oFerand, a user can continue to send (from the virtual machine)
additional jobs to the DOS/VS virtual machine for execution. Under these circumstances, a user does not have to reconnect to
the DOS/VS virtual machine to signal an interruption, unless the
currently executing job stream finishes before the next job is received
in the card reader.
If DOS/VS is running disconnected and is processing many jobs, a user may want to obtain printed output for completed jobs without waiting for
all the jobs to finish. When running DOS/VSE with the VSE/Advanced Functions program Product (5746-XE8), iM/370 automatically releases spooled printer output to iSE/POWER. However, for DOS/iS Release 34 (or earlier), release spooled
Frinter outFut (either accumulated directly or through the FOWER/VS program) by reconnecting to DOS/VS and issuing the command: close printer
This command releases the SYSLST output accumulated thus far. However,
when using the POWER/VS program and a dedicated printer, all spooled
output files are under the control of POWER/VS spooling, and not VM/370 spooling.
When running DOS/VS disconnected, a 15-minute time-out begins
ccnsole read occurs. If the virtual machine does not respond
read before the 15 minutes elapse, VM/370 automatically logs
virtual machine.
when a
to the
off the
For examFle: DOS/iS is running disconnected, and a program running
in the machine comFletes execution or issues a PAUSE request. The
virtual machine is logged off after 15 minutes unless the user
reconnects the virtual machine and issues the BEGIN command. Section 3. DOS/VS in a Virtual Machine 103