Prepares and executes a compiled Compatibility Mode program. (CM)


     PREPRUN uslfile[,entrypoint]

        [;NOPRIV]                   [;RL=filename]
        [;PMAP]                     [;NOCB]
        [;DEBUG]                    [;INFO=quotedstring]
        [;LMAP]                              {*formaldesig}
                                    [;STDIN=[{fileref     }]
        [;MAXDATA=segsize]                   {$NULL       }
        [;PARM=parameternum]                 {*formaldesig}
                                    [;STDLIST=[{fileref     }]
        [;STACK=stacksize]                     {$NULL       }
        [;DL=dlsize]                [;PATCH=patchsize]
              {G}                   [;NOSYM]
              {S}                   [{;FPMAP  }]


uslfile             Actual file designator of the USL file to which the
                    program has been compiled.

entrypoint          Contains a character string, terminated by a blank,
                    specifying the entry point (label) in the program
                    where execution is to begin when the program is
                    executed.  The entrypoint parameter may be the
                    primary entry point or any secondary entry point in
                    the program's outer block.  Default is primary entry point.

NOPRIV              Declaration that the program segments will be placed
                    in nonprivileged (user) mode.  This parameter is for
                    programs prepared with Privileged Mode capability
                    and make them accessible to nonprivileged users.
                    Normally, program segments containing privileged
                    instructions are executed in Privileged Mode only if
                    the program was prepared with Privileged Mode (PM)
                    capability class.  (A program containing legally
                    compiled privileged code, placed in nonprivileged
                    mode, may abort when an attempt is made to execute it.)

                    If NOPRIV is specified, all segments are placed in
                    nonprivileged mode. (Library segments are not
                    affected because their mode is determined
                    independently.)  Default is that segments of a
                    Privileged Mode program will remain in Privileged Mode.

PMAP                Request to produce a descriptive listing of the
                    prepared program to a file whose formal file
                    designator is $SEGLIST.  If $SEGLIST is not found in
                    a FILE command, the listing is produced on the
                    current list device.  Default is no listing.

DEBUG               Request to issue a DEBUG call before the first
                    executable instruction of the program.  Unless the
                    user has READ and EXECUTE access to the program
                    file, this parameter is ignored.  If Privileged Mode
                    (PM) capability has been assigned, the user is put
                    into Privileged Mode DEBUG.  If not, the user is put
                    into user mode DEBUG.  Default is that the DEBUG
                    call is not issued.

LMAP                Request to produce a descriptive listing of the
                    allocated (loaded) program to a file whose formal
                    file designator is LOADLIST.  If no FILE command
                    referencing LOADLIST is found, the listing is
                    produced on $STDLIST. Default is no listing.

ZERODB              Request to initialize to zero the initially defined
                    user managed (DL-DB) area, and uninitialized
                    portions of the DB-Q (initial) area.  Default is
                    that these areas are not affected.

segsize             Maximum permitted stack area (Z-DL) in words.  This
                    parameter should be included when you expect that
                    the size of DL-DB or Z-DB areas will be changed
                    during program preparation or execution. Regardless
                    what you specify, MPE/iX may change the segsize to
                    accommodate table overflow conditions.

                    If you prepare your program with a segsize less than
                    the configured minimum, the value is rounded up to
                    the minimum or the amount needed by the program (as
                    calculated by the MPE Segmenter).  The maximum
                    actual segsize permitted a program is 31,232 words.
                    You may prepare your program with a segsize larger
                    than necessary so long as this maximum is not
                    exceeded.  If the specified segsize does exceed the
maximum, it will be rounded down to 31,232 words.

parameternum An integer containing a parameter to be passed to
the new program (accessed through Q-4 of the outer block).

stacksize Size of local data area, Z-Q (initial), in the
stack, in words. If it is specified, this value
must be between 511 and 32,767 words. The default
is estimated by the MPE Segmenter.

dlsize DL-DB area to be initially assigned to stack. Due
to system logging considerations, the DL-DB area is
always rounded upward, so that the distance from the
beginning of the stack data segment to the DB-
address is a multiple of 128 words. The value you
specify must be between -1 and 32,767 words. The
default is estimated by the MPE V/E Segmenter.

G, P, or S Searches the segmented procedure libraries of the
program file's group and account. The G option
searches the group library, account library, then
the system library. The P option searches the
account library then system library. The S option
searches the system library for external references
to segmented procedures. Default is S.

capabilitylist Capability class attributes associated with the
program, specified in two-character mnemonics. If
more than one mnemonic is specified, each must be
separated from its neighbor by a comma. The
mnemonics are

IA Interactive Access
BA Local Batch Access
PH Process Handling
DS Data Segment Management
MR Multiple Resource Management
PM Privileged Mode

You can specify only those attributes that you
possess through assignment by the account manager or
the system manager. Default is IA and BA.

filename Actual file designator of the relocatable library
(RL) file to be searched to satisfy external
references during preparation of the program. This
can be any permanent file of type RL, to which you
must have READ and LOCK access. It need not belong
to the logon group, nor does it require a reserved,
local name. This file yields a single segment that
is incorporated into the segments of the program
file. Refer to the MPE Segmenter Reference Manual
(32650-60026) for a description of RL files.
Default is that no library is searched.

NOCB Request that the file system not use stack segment
(PCBX) for its control blocks, even if sufficient
space is available. This permits you to expand your
stack (with the DLSIZE or ZSIZE intrinsics) to the
maximum possible limit at a later time. It will,
however, cause the File Management System to operate
more slowly for this program.

quotedstring A sequence of characters between two single
quotation marks (apostrophes) or two double
quotation marks. You may use the delimiting
character as part of the string so long as the
delimiter appears twice. Any occurrence of two
single quotes, or two double quotes in a row, is
considered part of the string, and, therefore, not
the terminating delimiter.

;INFO=quotedstring is used in some programming
languages (for example, COBOLII, Pascal) to pass
compiler options to a program. These options will
appear before the first line of source code in the
text file.

$STDIN This parameter allows the user to specify the file
to be used as $STDIN by the program being executed.
If omitted, or if nothing is specified after the
equal sign, such as ;$STDIN=, then $STDIN defaults
to the job or session's standard input device. You
may use one of the following subparameters with $STDIN=

*formaldesig The formal file designator for a
file previously specified in a file

fileref The name of an existing permanent disk

$NULL The actual file designator of a
system-defined file that is always
treated as an empty file.

When referenced by a program as
$STDIN, that program receives only an
end-of-file indication when accessed.
When referenced by a program as
$STDLIST, the associated write request
is accepted by MPE/iX, but no physical
output is actually performed. Thus,
$NULL can be used to discard unneeded
output from an executing program.

STDLIST This parameter allows the user to specify the file
to be used as $STDLIST by the program being
executed. If $STDLIST is omitted, or if nothing is
specified after the equal sign, such as ;$STDLIST=,
then $STDLIST defaults to the job or session's
standard list device. This parameter has the same
subparameters as $STDIN, but you may also specify
the keyword NEW.

NEW The name to be assigned to a job/session temporary
disk file created with the system defaults. The
system defaults of the new file are fixed length
ASCII 132-byte records with a maximum file size of
1023 records.

patchsize Specifies the size of the patch area. This size
will apply to all segments within the program file.
The value you specify must be within -1 and 16,380 words.

NOSYM Suppresses the symbolic DEBUG option. Refer to the
HPToolset/V Reference Manual (32350-90001) for more

FPMAP or NOFPMAP Includes or excludes the internal PMAP information.
FPMAP is a request to have internal PMAP information
included in the program. NOFPMAP excludes PMAP
information from the program when the system FPMAP
or job/session FPMAP is on. If the symbolic DEBUG
option is invoked, default is FPMAP. Otherwise the
default is NOFPMAP.


     The PREPRUN command prepares and executes a program compiled in
     a USL file.  Both relocatable (RL) and segmented (SL) libraries
     are searched during the preparation process to satisfy external references.

     The USL file created during compilation is a system-defined
     temporary file, $OLDPASS, which is passed directly to the MPE
     Segmenter.  It can be accessed only if you do not use the default
     for progfile.  This is because the Segmenter also uses the file
     $OLDPASS to store the prepared program segments, overwriting any
     existing temporary file of the same name.

     This command may be issued from a session, job, or program.  It may
     not be used in BREAK.  Pressing [Break] suspends the execution of
     this command.  Entering RESUME continues the execution.


     To prepare and execute a program from the USL file XUSL,
     with no special parameters declared, enter


     To obtain a descriptive listing of the prepared program, and
     a listing of the allocated (loaded) program, enter


     To prepare and execute a program form the USL file UBASE
     that begins execution at the entry point RESTART, that has a
     stacksize of 800 words and searches an RL file named LIBA,


     The following example prepares and runs a program with
     $STDIN set to the existing disk file INPUT.  $STDLIST is set
     to the line printer


     The next example also uses the $STDIN= and $STDLIST=
     parameters to prepare and run a program.  This time, a file
     equation is used to set $STDIN to INPT, and to set $STDLIST
     to the temporary disk file RESULTS (which is automatically
     created by the RUN command).


     The following example of the PREPRUN command uses the INFO=
     parameter to pass a string to the program

     PREPRUN MYPROG;MAXDATA=2000;INFO="A test with ""and"" &

     Note that the delimiting character is doubled within the
     string so that it will appear on the printout as follows

     A test with "and" characters


Commands:   PREP

Manuals :   MPE Segmenter Reference Manual (32650-60026)