70 Rocket Model 204 Terminal User’s Guide
Invoking and disconnecting from the CMS terminal interface
DCSS, NUCEXT, and UAREA specify how the EXEC runs. The meanings of
these options are as follows:
SUBSET string Character string that is the CMS SUBSET entry sequence.
If this string is entered as the only input data on the screen,
the user enters CMS SUBSET mode. In this mode, the user
can execute any CMS commands that are nucleus-resident
or that load in the Transient Area. For a summary of these
commands, refer to the z/VM CMS Command and MACRO
Reference.
After the user returns from CMS SUBSET mode (by use of
the RETURN command in CMS), the subset string is
redisplayed on the terminal at the same point the user had
entered it.
The SUBSET option is ignored if Model 204 is invoked in
single-user mode.
CMD filename Name (1-8 characters) of a user-created file containing
commands that are to be read as the initial input to
Model 204. The command file must have a file type of
M204CMND and reside on a disk accessed by the CMS
user’s virtual machine.
LOGIN or NOLOGIN Whether Model 204 automatically generates the initial
LOGIN command. LOGIN specifies that Model 204
generate the command. NOLOGIN specifies that Model 204
not generate the command. The user can select LOGIN or
NOLOGIN, but not both. LOGIN is the default.
The LOGIN/NOLOGIN option is ignored if Model 204 is
invoked in single-user mode.
ONLINE or IFDIAL Connection type for a single user invocation (that is, USER
*). ONLINE runs a normal Online connection type; IFDIAL
runs an IFDIAL connection type. ONLINE is the default.
VMCF or IUCV Type of communication used (that is, the VMCF or IUCV
interface). Although either VMCF or IUCV can be specified,
IUCV communication is always used.
Note: In future releases, specifying VMCF might not be
supported.
This option... Specifies...
This option... Causes the EXEC to...
DCSS (the default) Load M204USR, the saved segment version of the CMS or
IUCV interface program.
NUCEXT Load the CMS or IUCV interface program as a nucleus
extension. This option is valid only for CMS Release 3 or
later.
UAREA Run the CMS or IUCV interface program by running a
module in the user area.
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