Section 2. Initiating VM/370 Operation Console Input Procedures CP and CMS commands are never aore than eight characters long and can be
truncated to the m1n1mum size indicated in the co.mand foraat description. The operands, if any, follow the ceamand on the same input
data line. Bost CP and CMS commands may not extend beyond one line except on the 3270. Generally, the operands are positional, but some commands have keywords to assist in the translation of the command line. One or aore blanks must separate the command fre. any operands (except for some EDIT subcommands). CftS indicates successful co.mand processing with the CBS ready message. Error messages occur for erroneous operands. CP does not
recognize CKS comaands. However, a CBS user can issue CP coaaands without leaving the CKS environment. Although net required, CP commands entered while in the CKS environment should be prefixed with "CpR or fttcP" to decrease YK/370 table and disk search tiae. CP then handles
the command and passes control back to CBS. If the CBS user wants to
enter CP mode, he can do so by keying in CP er tcp with no operands
(that is, no CP co •• ands) or with an attention interruption. Por details, refer to "Attention Handling" in the !AlJ70 2.uide • If a user requires com.unication with CP before responding to
specific error messages issued by soae virtual machine operating syste.s
i he should enter CP mode by keying in tcp with one or aore CP coamand lines separated by a logical line end character, or by
signalling attention; then perform the necessary console functions. When returning to the virtual machine environment, the virtual machine
read will have been canceled by a unit exceFtion, and the virtual
operating system noraally responds by reissuing the read. The user can
then enter the required virtual machine response. You, as the '!/370 system operator, are like other system users, but
with some important differences: • You are allowed to perform certain console functions that the normal user is not. • Your terainal normally stays in CP mode and is usually ready to
receive messages from the V!/370 system and other users. Unless you are using a 3270 terminal, before you can type a co •• and,
you must press the REQUEST key (or its equivalent) on the designated V!/370 system console. VK/370 responds with the tiae, and sets up to
read data from the console keyboard. You can then enter CP co.mands
into the system. You can enter all CP commands in lowercase or uppercase, or a aixture of both. All system responses are prefixed with the cleck time at which
you entered the command from the primary console. Pull descriptions of CP commands with a class of 1 through F are in "Section 3. CP Commands." Enter commands into the VK/370 system console by pressing the
end-of-line function key to terminate the command line. To cancel a
.iskeyed or inappropriate V!/370 command that JOu partially or totally
entered into the system, enter the designated logical line delete Section 2. Initiating VK/370 Operation 7

character (normally, the ¢ symbol) or press the CANCEL key (or its
equivalent). The CANCEL key on the 3215 cannot cancel lines of input until you
finish defining the V8/370 system during system generation. Also, the PAZ key or the CANCEL key on the 3270 and 3066 cannot cancel input
lines. --
For details on supported V8/370 typewriter terminal consoles, display
terminal consoles and the associated keys that manage the display
screen, signal attention, and process line 'records, consult the !IlL;!IQ Operating Procedures CP and C8S, with the exception of the special CP service programs and
certain frequently used CP functions, get all of their system functions from disk. Each of the disks mayor may not be labeled. If the disks
are for C8S file residence, or CP paging and sFooling (temporary use),
you must label each pack with a six-character label in real cylinder 0 track 0 record 3 by using the CP Format/Allocate program.
The V8/370 system is device-independent; each of the volumes that
have CP labels can reside on any available and defined 2314, 2319, 3330, 3333, 3340, 3344, 3350 or 2305 direct access storage device. This
definition occurs at system generation time. The CP system residence (SYSRES) volume must be mounted on an available IPt device; then with
the load switches dialed to that DASD device pressing the LOAD button viII bring up the system. CP-owned volumes (cne each for paging and
spooling) must be mounted and ready. All other resident volumes should
be mounted and ready when the system is started, although they can be
added later (via the CP ATTACH command) to the system, while it is in
operation. AFFINITY, SASSIST, CPASSIST, RESERVE, commands): These can be assigned only
class A. !2 (FAVORED, PRIORITY, LOCK, and UNLOCK by an operator with privilege j!andli.ng of I.nEut QY!:Eut: Card decks for users must be fed
into the real card reader, printed and punched output properly
distributed, and the unit record equipment and spool data files
controlled. The control functions for the system's unit record equipment and spool data files can be performed only by a class D
operator. !1l.9 Deta£!!ing of and Volume2: Devices used by
virtual machines in dedicated mode must be attached and detached as
appropriate. Control over the real system/370 computing system's I/O can be performed by an operator with privilege class B.
Operators with these privilege classes must be logged on to perform these functions. Below is a directory entry for an operator to perform all of these functions: USER OPERATOR OPASS 512 18 ABDG
The system and spooling operators do not require virtual devices or
options in their VM/370 directory entries unless CMS is used. Kultiple virtual machines for operators may be set up, each with all or some of
8 YK/370 Operator's Guide