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AS400
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Reboot the PC by pressing <Ctrl><Alt><Delete>at the same time. Press this key
combination twice.
Select the option that indicates PC Support and/or AS/400.
Answer "Enter common user ID:" with your username
Answer "Enter password for common user ID:" with your password.
If there is a beep or a message press <Enter>to bypass the message.
At this point you should have the following screen:
Sign On
System . . . . . : MKTAS400
Subsystem . . . . : QINTER
Display . . . . . : PCnnnnS1
User . . . . . . . . . . . . . . __________
Password . . . . . . . . . . . .
Program/procedure. . . . . . . . __________
Menu . . . . . . . . . . . . . . __________
Current library. . . . . . . . . __________
Type your username in the "User" blank.
Press the <Tab>key.
Type your password. The password will not be displayed.
Press the <Enter>key.
If for some reason you can not longer type, press the <Reset>key. On the Microterms or PC-VT
this would be the <Esc>key then R. On PC Support/400 this would be the left <Ctrl>key.
If this is the first time you signed on continue with the Changing your password section of this
manual.
Changing Your Password
The first time you log on the AS/400 you will be forced to change your password before
continuing.
Press <Enter>to change your password.
At the "Current Password" field, type `xx' followed by the last six digits of your social
security number (ie. xx999999) NOTE: nothing you type on this screen will be displayed
to ensure that no one views your password as you type it.
Press <Tab>or <Field Exit>.
For the "New Password" field, type the password you would like to use when you sign on
to the computer. It must not exceed 10 characters, it must begin with a alphabetic
character and the remaining characters may be any combination of alphabetic, numeric
characters. Note: Try not to make it too difficult, you will need to know it to sign on the
AS/400 again.
Press <Tab>or <Field Exit>
At the "New Password (to verify)" field, type in your new password for a second time to
make sure you have entered it correctly. If you have entered it incorrectly you will get an
error message and your initial password will still be `xx' followed by the last four digits
of your social security number.
Press <Enter>
Upon completion, the following message will be displayed:
Password changed successfully
Read the following screens, pressing <Enter>to exit each one, until you reach the AS/400
Main Menu screen.
Later on when you want to change your password, type CHGPWD on the command line and go
through the same steps.
Signing Off of the AS/400
Press <F3>until you see a command prompt, ===>.
At the command prompt type SIGNOFF.
Getting Online Help
AS/400 provides extensive On-line help, and a simple method of accessing the help information.
On-line help information is provided for all system displays. The type of help provided depends
on the location of the cursor.
For all displays, the following information is provided:
What the display is used for
How to use the display
How to use the command line if there is one
How to use the entry fields and parameter line if any
What function keys are active and what they do.
If the <Help>key is pressed when the cursor is in an area where specific on-line help information
is available, the help text for that area of the display is shown.
If the <Help>key is pressed when the cursor is in an area for which no specific information is
available, information for the entire display is shown. Then you can page forward or backward
through the information for the entire display and for each area.
If the <Help>key is pressed while a help display is shown, a description of the types of help that
are available on the displays, and how to get each type of help is shown.
The <Help>key on the PC Support stations is labeled <Scroll Lock>. On the VT-100 or PC-VT
stations the key sequence for < Help>is <ESC>h.
If <F11>=Search index is shown at the bottom of the display, you can press <F11>to see the
Search Help Index display. On that display, you can request information about any topic you
specify.
STRSCHIDX
The start search index command is used when you would like to get help on a specific or general
topic. To use the index search facility type STRSCHIDX and hit <Return>. Type your subject
topic, or topics on the bottom subject line. When you hit <Return>again your topic will be
searched for and the topics found will be displayed on the screen above the topic line. To display
the information you are looking for type 5 in the option field by the topic line press <Return>. To
get out of the index search facility press <F3>until exited.
CD-ROM Manuals
If you are attached to the AS/400 using PC Support/400 you have the ability to look at a
hypertext version of a subset of the complete AS/400 manual set. To start the hypertext book
reader type the command MANUALS at any AS/400 prompt. This guide is laid out like a library.
The library contains bookshelves. These bookshelves contain books. For example our library
contains a bookshelf name Languages. We select the bookshelf by using the arrow keys to place
the highlighted cursor over it and press <Enter>. On this bookshelf there are several books on
languages. One of the books is titled "COBOL/400 Reference". Once again we use the arrows
and cursor to select the item. Now that we have the book it opens up a "Table of Contents" for
the book. By using this search and select procedure you can look through the book like a book
you'd check out at the library.
More Help
There are three ways to get help on the READ/DOS book reader (AS/400 command
MANUALS):
Start the book reader and select the bookshelf entitled BookManager READ/DOS.
Press <F1>anywhere you're in question about your current options.
Press <Alt>h (or <F10>h) and select the appropriate help selection for your current
problem.
Using the Prompt Facility
AS/400 provides interactive command prompting for any command supplied with the system or
created by the user. On the command entry screen notice the option F4 = Prompt at the bottom of
the screen. You can type the command name only, and press <F4>to see the prompt display for
the command. Usually, a command may require many parameters before it can be executed. The
prompt displays provide a convenient method of supplying that parameter information. For
example, type SNDMSG on any command line and press <F4>. The following prompt display is
shown:
Send Message (SNDMSG)
Type choices, press Enter.
Message text . . . . . . . . . . ________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________
To user profile . . . . . . . . . __________ Name , *SYSOPR, *ALLACT...
F3=Exit F4=Prompt F5=Refresh F10=Additional parameters F12=cancel
F13=How to use this display F24=More keys
To execute the command, supply the required information for Message text and user profile and
press <Enter>. Most of the parameters used on commands have default values that are used if no
other value is specified. You may change the default values if you desire to do so.
If <F4>= Prompt is shown on the prompt display, you can press < F4>to request a list of
predefined values (such as *SYSOPR and *ALLACT in the above display) that are permitted in
the field where the cursor is currently positioned.
In relation to the SNDMSG command, you can use DSPMSG at any time to display messages in
your message queue.
Organization of OS/400 Objects
Objects
On the AS/400, everything that can be stored or retrieved is stored in an object. Examples of
objects are libraries, files, executable programs, queues, and more. Objects share some common
attributes such as name, type, size, description, date created, and owner. The concept of an object
allows the system to perform certain standard operations, such as authorization management, on
all objects types. The object types that we will be primarily concerned with in this manual are:
*LIB Libraries
*FILE Files
*PGM Compiled programs
*OUTQ Output queues
Libraries
Every object is contained in a library. A library is an object, of type *LIB, that contains a group
of objects. It is similar to the "root" or top-level directory on Unix, MS-DOS, and VAX/VMS.
However, unlike these systems, a library cannot "contain" other libraries (with the exception of
QSYS, the system master library, which "contains" all libraries on the system). An interesting
implication of the non-hierarchical nature of libraries is that two users cannot have libraries with
the same name. There are basically three general categories of libraries:
1. QSYS - the library that contains all other libraries,
2. System supplied libraries NOTE:all IBM-supplied library names begin with the letter "Q"
or "#"
3. User-created libraries.
Files
A file is an object, of type *FILE, that contains data in the form of a database, device data, or a
group of related records that are handled as a unit. In this manual, we are primarily concerned
with database files. There are two types of database files:
1. physical files
2. logical files.
A physical file contains actual data stored on the system. It has a fixed-length record format. In
this manual, we are primarily interested in two kinds of physical files:
1. data physical files
2. source physical files.
A data physical file (*FILE PF-DTA) contains data that cannot be compiled, such as an input file
to a program. In conventional terms, a data physical file is a data file, for example an employee
master file. A data physical file normally has a record format. This record format is defined using
Data Description Specifications (DDS is a language that is used to describe database files to the
system). This description is then compiled to produce a *FILE object with attribute PF-DTA.
A source physical file (*FILE PF-SRC) contains source statements, for example the source
statements of a Pascal or COBOL program. A source physical file has the attribute "PF-SRC". It
is usually created using the "Create Source Physical File" (CRTSRCPF) command (more
information about this command will be given later). A source physical file is actually a special
type of data physical file. The CRTSRCPF command creates a physical file with attributes
appropriate for source physical files. For example, the default record length is 92 (80 for the
source data field, 6 for the sequence number field, and 6 for the date field. Refer to the section on
the SEU editor for the meanings of these fields.)
The data records in a data physical file can be grouped into members. A data physical file may
contain one or more members. These members are not objects themselves but subsets of an
object. This implies that all members of an object share the same basic characteristics with the
other members in the object such as ownership and security. In a PF-SRC file, each member
contains source statements for a program or DDS source. Members have an attribute associated
with them, which in the case of PF-SRC members, determines how the various systems programs
(such as the editor and compilers) on the AS/400 treat the member. This attribute is specified
when creating the member, and allows compilation to be totally automatic. Once, for example, a
member has been specified as having an attribute of CBL (for COBOL program,) the AS/400
editor, SEU, will format the program as a COBOL program, and when PDM (Program
Development Manager) is given the instruction to compile the file, it "knows" that it should
invoke the COBOL compiler. An example of a PF-SRC file and its members is shown below (we
will explain how to get to this screen in the section on PDM):
Work with Members Using PDM
File . . . . . . SRCFILE___
Library . . . . YOURLIB___ Position to . . . . __________
Type options, press Enter.
2=Edit 3=Copy 4=Delete 5=Display 6=Print
7=Rename 8=Display description 9=Save 13=Change text ...
Opt Member Type Text
__ NAMEEMP LF Sample DDS Source for a Logical File
__ CLPROG CLP Sample Control Language Source Program
__ RPGPROG RPG Sample RPG Source Program
__ EMPMAST PF Sample DDS Source for a Physical File
__ SCRNMBR DSPF Sample DDS Source for a Display File
Parameters or command
===> ___________________________________________________________
F3=Exit F4=Prompt F5=Refresh F6=Create
F9=Retrieve F10=Command entry F23=More options F24=More keys
The name of the source physical file is SRCFILE, and it is contained in the library YOURLIB.
Although, in the above example, source members of different types are stored in the same source
physical file, you will probably want to store source programs of the same type in a separate
source physical file. For example, you may want to keep all your RPG source programs in a PF-
SRC file called, for example, "RPGSRC" and DDS source in a PF-SRC file called, for example,
"DDSSRC". You may also use the standard IBM-supplied names such as "QRPGSRC",
"QDDSSRC", and "QCLSRC" for the various PF-SRC files. However, you may choose to
include source members of different types belonging to the same application in the same PF-SRC
file, as in the above example.
In a data physical file (PF-DTA), the member(s) contains data for use by programs. Normally, a
PF-DTA file will only have one member (by default, the member's name is the same as the file
name). However, it is possible to include multiple members in a single PF-DTA file. For
example, you may want to group the records in a sales transactions file so that each member
contains data for each month. In this way, each month's data can be processed separately by
processing one member at a time. It is important to understand, at this point, the difference
between "source" and "data" in regards to data physical files. In the "Work with Members using
PDM" screen above, the "PF" member, "EMPMAST", contains DDS source that defines a
physical file. When this source member is compiled (using CRTPF or option 14 in the "Work
with Members using PDM" screen), it will produce a *FILE object with attribute PF-DTA. This
compiled object is the actual file that is used to hold data records.
A data logical file (*FILE LF-DTA) is a data file that contains no actual data, but provides a
different method of viewing the data of an accompyning data physical file(s) which it internally
references. It is similar to the concept of a "view" in SQL. A data logical file is described to the
system using DDS. When the DDS source is compiled, a *FILE object with the attribute LF-
DTA is produced.
Another *FILE object type that you may encounter in your programming courses is the device
file. A device file contains a description how data is to be presented to a program from a device
or vice versa. Two common types of device files are printer files (*FILE PRTF) and display files
(*FILE DSPF). A printer file describes the attributes that printed output will have, such as the
length and width of a printed page. A printer file can be created using the "Create Printer File"
(CRTPRTF) command. A display file describes what information is to be displayed and where it
is to be displayed on the screen of a display station. One way of defining and creating a display
file is with the Screen Design Aid (SDA) utility.
Other Object Types
A program object (*PGM) is a compiled program. The attribute for a *PGM object indicates the
language the program was written in. For instance, when a COBOL source program is compiled,
it produces an object with a type of *PGM with the attribute CBL.
An important object type on the AS/400 is the output queue (*OUTQ). On the AS/400, whenever
something is printed, the output goes to an output queue and it stays there as a spooled file. A
spooled files, like a member, is not an object itself but a subset of an object. The spooled file
stays in the output queue until it is directed to a printer or removed. An output queue has already
been created for you with the creation of your user profile. The name of the output queue is
normally the same as that of your user profile. Refer to the section "Printing Procedure" in this
manual for more information on printing spooled files.
The relationships between the various objects that have been discussed in this section are as
follows:
QSYS (*LIB)
[special library]
|
| contains
|
Library (*LIB)
|
| contains
|
.------------------+----^-----------------.--------.
| | | |
Programs (*PGM) Outqueues (*OUTQ) Files (*FILE) Other
[Executable] | | objects
| contains |
Spooled Files |
[Output intended for Printer] |
|
.----------------^--.
| |
Physical Data Logical
file file
(PF) (LF-DTA)
| ^ contains
.------^-----. Member(s)
| | [Reorginized data]
Source Data
Physical Physical
File File
(PF-SRC) (PF-DTA)
| |
contains | | contains
| |
Member(s) Member(s)
[Program source] [Actual Data]
Creating a Library
A library has already been created for during user profile creation. The name of this library is
normally the same as that of your user profile. In this section, we will create another library and
use this library as an example throughout the manual. Note that you can use your default library,
i.e. the library that has the same name as that as your user profile, to store all your application
objects.
To create a library, type the CRTLIB ("Create Library") on a command line and press <F4>to
prompt on it. Type in the name of the library and enter a brief description for the library. Leave
the library type as *PROD (a production library is one that is used for normal processing).
Create Library (CRTLIB)
Type choices, press Enter.
Library . . . . . . . . . . . . YOURLIB__ Name
Library type . . . . . . . . . . *PROD____ *PROD, *TEST
Text 'description' . . . . . . . Sample_Library__________________
F3=Exit F4=Prompt F5=Refresh F10=Additional parameters F12=Cancel
F13=How to use this display F24=More keys
Press <Enter>. You should see a message at the bottom of the screen saying "Library ... created".
If you see the message "Library ... already exists", it means that some other user already has a
library by the same name. Note: All libraries are on the same "level" with only QSYS above
them. If you get this message, try another name for the library. Other commands that operate on
libraries are:
DSPLIB (Display Library)
DLTLIB (Delete Library)
WRKLIB (Work with Library).
Creating a Source Physical File
Now, let's create a source physical file in the library that we have just created. To create a source
physical file, type CRTSRCPF and press <F4> to prompt on it. Supply the names for the source
file and the library that will hold it. Below, we show the display for creating a source file called
"SRCFILE" in the library "YOURLIB". Press < Enter> and you should see the message "File ...
created in library ..." at the bottom of your screen.
Create Source Physical File (CRTSRCPF)
Type choices, press Enter.
File . . . . . . . . . . . . . . SRCFILE___ Name
Library . . . . . . . . . . . YOURLIB___ Name, *CURLIB
Record length . . . . . . . . . 92_______ Number
Member, if desired . . . . . . . *NONE_____ Name, *NONE, *FILE
Text 'description' . . . . . . . Sample_Source_File___________________
F3=Exit F4=Prompt F5=Refresh F10=Additional parameters F12=Cancel
F13=How to use this display F24=More keys
Library Lists
You may have noticed in the previous screen that the "Library" field defaults to the value
*CURLIB, meaning the current library. The current library is tied closely to the concept of a
library list. Before we discuss what the current library is, we first explain what a library list is. A
library list is similar in concept to the "PATH" in Unix and MS-DOS. It specifies which libraries
are to be searched and the order in which they are searched when the system looks for an object.
A library list is identified by the value *LIBL. A default library list is automatically created by
OS/400 for each job started by a user. Your default library, that is the library that has the same
name as that as your user profile, is automatically included in your library list. You can display
your library list by typing DSPLIBL and press <Enter> on a command line. The following is the
library list for the user "JOHNDOE".
Display Library List
System: MKTAS400
Type options, press Enter.
5=Display objects in library
Opt Library Type Text
__ QSYS SYS System Library
__ QHLPSYS SYS
__ QUSRSYS SYS *IN USE
__ JOHNDOE CUR JOHN DOE's default library
__ QTEMP USR
__ QGDDM USR
__ QGPL USR GENERAL PURPOSE LIBRARY
__ QMSU USR MSU generated commands and programs
__ QPAS USR
__ MBNLQ USR Common Library for MBNLQ ..
__ ONLINE USR COLLECTION - created by SQL
F3=Exit F12=Cancel F17=Top F18=Bottom
Note that you may not have all the libraries in the above list. As you can see, a library list is
divided into three parts:
system portion
which consists of the libraries that are required to run system functions
current library
which by default, is the library that has the same name as your user profile (in this case,
the library "JOHNDOE"). The current library is the first user library that is searched
before the rest of the user libraries in the list.
user portion
which consists of libraries that holds user objects. Some user libraries, such as QTEMP,
QGPL, and QGDDM come with the system while others are locally supplied. In addition,
the user can create their own libraries and add them to their library list.
If a user does not specify a library name when requesting an operation on an object, the libraries
in the library list are searched for the object (starting with the system libraries, the current
library, and the user libraries). For example, assume that the user "JOHNDOE" has an executable
program (*PGM object) called "TESTPROG" in the library "YOURLIB". User "JOHNDOE"
wants to run the program (using the CALL command) and issues the command CALL TESTPROG.
A message will appear stating that the program is not found in the library list. This is because
"YOURLIB" is currently not in the library list. If, however, "TESTPROG" is qualified by
"YOURLIB" as CALL YOURLIB/TESTPROG then the program can be found and executed.
To add a library to the library list, type the "Add Library List Entry" (ADDLIBLE) command,
followed by the library name (or prompt on the command) ADDLIBLE YOURLIB.
If "JOHNDOE" now issues the the unqualified CALL command, the program can now be
located and executed since the library that contains the program is now in the library list. You
can edit your library list using the EDTLIBL command and remove a library list entry using the
RMVLIBLE command. "YOURLIB" can be made the current library by typing CHGCURLIB
YOURLIB.
Some commands automatically default to the current library (*CURLIB), such as the
CRTSRCPF command. Note, however, that both commands (ADDLIBLE and CHGCURLIB)
are only effective for a particular session. Next time, when "JOHNDOE" signs on, "YOURLIB"
will no longer be in their library list and hence, no longer the current library. In the section
"Steps in Developing a Program", we will create an "initial program" that will automatically run
these commands when a user signs on the system.
Using the Program Development Manager (PDM)
The Program Development Manager (PDM) is a set of utilities under OS/400 designed to
simplify the creation and development of software. It automates file and member creation,
editing, compilation and program execution, and allows the programmer to manage their
environment from a set of standard menus.
Starting PDM
PDM may either be started using the command STRPDM (for Start PDM,) which will produce a
menu of options for the level on which the user wishes to work (libraries, objects, or members,)
or using one of three commands which indicate the level at which the user would like to work:
WRKLIBPDM -- Work with libraries using PDM
WRKOBJPDM -- Work with objects using PDM
WRKMBRPDM -- Work with file members using PDM
Work with Objects
One of the most commonly used commands to start PDM is WRKOBJPDM. This allows the user
to work with objects inside a library. Type WRKOBJPDM and press <F4> to prompt on it.
Work with Objects Using PDM (WRKOBJPDM)
Type choices, press Enter.
Library . . . . . . . . . . . . *PRV______ *PRV, name, *CURLIB
Object . . . . . . . . . . . . . *ALL______ *PRV, name, *generic...
Object type . . . . . . . . . . *ALL______ *PRV, *ALL, *ALRTBL, *AUTL..
Object attribute . . . . . . . . *ALL______ *PRV, attribute, *generic...
F3=Exit F4=Prompt F5=Refresh F12=Cancel F13=How to use this display
F24=More keys
The *PRV value on the "Library" field indicates that the default is to work on the library the user
last worked with. These may be replaced with the name of a specific library. The "Object" and
"Object type" options allow the user to limit which objects will be displayed. Type WRKOBJPDM
and prompt with <F4>.
Work with Objects Using PDM (WRKOBJPDM)
Type choices, press Enter.
Library . . . . . . . . . . . . YOURLIB___ *PRV, name, *CURLIB
Object . . . . . . . . . . . . . *ALL______ *PRV, name, *generic*...
Object type . . . . . . . . . . *ALL______ *PRV, *ALL, *ALRTBL, *AUTL..
Object attribute . . . . . . . . *ALL______ *PRV, attribute, *generic...
F3=Exit F4=Prompt F5=Refresh F12=Cancel F13=How to use this display
F24=More keys
The screen resulting from command WRKOBJPDM, with the library specified as YOURLIB,
and *ALL on the other options, is shown below.
Work with Objects Using PDM
Library . . . . . YOURLIB___ Position to . . . . . . __________
Position to type . . . . __________
Type options, press Enter.
2=Change 3=Copy 4=Delete 5=Display 7=Rename
8=Display description 9=Save 10=Restore 11=Move ...
Opt Object Type Attribute Text
__ SRCFILE *FILE PF-SRC Sample Source File
Bottom
Parameters or command
===> ________________________________________________________________
F3=Exit F4=Prompt F5=Refresh F6=Create
F9=Retrieve F10=Command entry F23=More options F24=More keys
Presently, there should be just one object in the library, the source physical file "SRCFILE" that
you have just created.
PDM Options
Options are displayed across the top of the screen (for a list of all the options available in PDM,
see Table 1 at the end of this section.) Each option is an action which may be performed on an
object by placing its number on the "Opt" line next to the object and pressing the < Enter> key.
This method of specifying actions on a form listing the objects available is consistent throughout
PDM.
There are two important special features which this method of specifying actions offers: First,
the options support the prompting facility, and second, multiple objects may be operated on in
succession. To use the prompting facility, simply press <F4> while an option number is on one
of the "Opt" lines. PDM will present the prompt screen for the command associated with that
option number. Multiple objects may be operated on sequentially by placing numbers on more
than one Opt line. For example, assume we have two source files in "YOURLIB". You can type
"5" (Display) against one and type "7" (Rename) against the other. Pressing <Enter> causes
PDM to process each option in turn.
More on PDM levels
Moving down levels in PDM is accomplished using the "12" (Work With...) option. At the
WRKOBJPDM screen, the action of this option depends on the file type. Placing a 12 on the line
next to an item on this display will:
If the item is of type *FILE, go to the WRKMBRPDM display for that file (there are
different types of WRKMBRPDM displays for source and data files.)
If the item is of type *OUTQ, go to the "Work With Output Queue" display, allowing the
user to work with spooled files.
If the item is of type *PGM, present a display allowing the user to call the program,
change its attributes, etc. (programs may also be called from the WRKOBJPDM screen
by using the 16 option.)
When this method of changing levels is used, pressing <Enter> or <F12> (cancel) with no
options on the screen returns to the previous level.
Work with Members
The WRKMBRPDM display is the bottom level of PDM. When working with a source physical
file at this level, option 2 runs the STRSEU command to begin editing a member and 14 calls the
compiler for a program of that type (if specific compiler options are needed, for instance the
*DEBUG option to include debugging information in the program, remember that the prompting
facility may be invoked on any PDM option.) When working with a physical data file, the
"2=change" option is no longer valid. However, the "18" option may be invoked to modify the
file using DFU (Data File Utility).
Type "12" against "SRCFILE" to work with it. The following "Work with Members using PDM"
screen appears:
Work with Members Using PDM
File . . . . . . SRCFILE___
Library . . . . YOURLIB___ Position to . . . . __________
Type options, press Enter.
2=Edit 3=Copy 4=Delete 5=Display 6=Print
7=Rename 8=Display description 9=Save 13=Change text ...
Opt Member Type Text
(No members in file)
Parameters or command
===> ________________________________________________________________
F3=Exit F4=Prompt F5=Refresh F6=Create
F9=Retrieve F10=Command entry F23=More options F24=More keys
Presently, there are no members in "SRCFILE". Let's create a member. To do that, press <F6>
(Create). This will automatically invoke the SEU editor. Enter the name of the new source
member and for its source type, enter "TXT" (i.e. the source member will contain only plain
text). Press <Enter> .
Start Source Entry Utility (STRSEU)
Type choices, press Enter.
Source file . . . . . . . . . . > SRCFILE___ Name, *PRV
Library . . . . . . . . . . . > YOURLIB___ Name, *LIBL, *CURLIB, *PRV
Source member . . . . . . . . . SRCMBR____ Name, *PRV, *SELECT
Source type . . . . . . . . . . TXT_______ Name, *SAME, BAS, BASP, C...
Text 'description' . . . . . . . Sample_Source_Member____________________
Bottom
F3=Exit F4=Prompt F5=Refresh F12=Cancel F13=How to use this display
F24=More keys
You will now be inside the SEU editor. For now, press <F3> to quit and type "Y" in the
"Change/Create member" field to save the source member. Later on, in the section on SEU we
will use this source member. On return to the WRKMBRPDM screen, you will notice that
"SRCMBR" is now in "SRCFILE".
The "Work with Members using PDM" screen can be accessed directly using the
WRKMBRPDM command. Type this command and press <F4> to prompt on it. To work with
the member that we have just created, enter the names of the library and file as shown below. If
you have many members in your file, you can use the "Member" and/or "Member Type" fields to
narrow down the number of members to work with.
Work with Members Using PDM (WRKMBRPDM)
Type choices, press Enter.
File . . . . . . . . . . . . . . SRCFILE___ *PRV, name
Library . . . . . . . . . . . YOURLIB___ *PRV, name, *LIBL, *CURLIB
Member . . . . . . . . . . . . . *ALL______ *PRV, name, *generic...
Member type . . . . . . . . . . *ALL______ *PRV, type, *generic...
F3=Exit F4=Prompt F5=Refresh F12=Cancel F13=How to use this display
F24=More keys
Work with Libraries
Briefly, the WRKLIBPDM command lets you work with a library or libraries. You will probably
use this command least among the three PDM commands. You can work with the contents of a
library by typing 12 against it. This will bring up the "Work with Objects using PDM" screen for
that library.
Table 1: Options in PDM (Some options may not be valid at some levels.)
2: Change Modify an object or edit a source member
3: Copy Duplicate an object
4: Delete Remove an object from storage
5: Display Display the contents of an object
6: Print Copy a source member to an output queue
7: Rename Change an object's name
8: Display Descrip. Show summary information about an object
9: Save Save an object to offline storage
10: Restore Retrieve an object from offline storage
11: Move Move an object to another library
12: Work With Perform operations on the contents of an object
13: Change Text Change the text description line for an object
14: Compile Compile a source physical file member
15: Copy File Copy a *FILE object (has special options)
16: Run Run an object of type *PGM
17: Change Using SDA Change a screen design (in a PF-SRC) using SDA
18: Change Using DFU Use DFU to change a PF-DTA member
25: Find String Find a string of characters in an object
Table 2: Function Keys in PDM
F1: Help Obtain help on an area of PDM
F3: Exit Exit PDM or current operation
F4: Prompt Display prompt screen for options on screen
F5: Refresh Redraw the screen with updated information
F6: Create Create a library, file, or member
F9: Retrieve Recall a previous command to the command line
F10: Command Entry Display an OS/400 command entry screen
F11: Display Toggle Switch to/from brief display mode
F12: Cancel Cancel an operation
F13: Repeat Copy an option number to all lines
F14: Source Type Toggle Switch between date and type display in PF-SRC
F15: Sort Change member list sort criteria
F16: User Options Specify user-defined commands to PDM
F17: Subset Limit the list on the screen to certain types
F18: Change Defaults Change PDM user settings
F21: Print List Print the object list on the screen
F23: More Options Display more PDM option numbers, if available
F24: More Keys Display more function keys, if available
Control Language Command Syntax
The purpose of this section is to provide a more formal presentation of CL commands. As you
would probably know by now, a CL command is a way of of invoking functions and calling
system services. A CL command is made up of two parts: (1) a command name and (2)
parameters.
Command Structure
First, let's consider the command name. A command is made made up of two components:
1. a VERB and
2. a SUBJECT. The verb consists of three characters and is the "action" component of the
command. Some common verbs and their meanings are shown below:
o ADD - Add Item
o CHG - Change
o CPY - Copy
o CRT - Create
o DLT - Delete
o DSP - Display item
o END - Stop a program which was started with a STR
o GRT - Grant
o MOV - Move
o RMV - Remove item
o RST - Restore
o RTV - Retrieve
o RVK - Revoke
o SET - Set
o SND - Send
o STR - Start (a program or utility)
o WRK - Work with
The subject component of the command specifies the item that the verb acts on. Some examples
of verb/subject combinations are:
CRTSRCPF - Create Source Physical File
WRKOBJPDM - Work with Objects Using PDM
STRPDM - Start PDM
ADDLIBLE - Add Library List Entry
CL commands can be found in several ways. The command GO CMDxxx can be used to get a
menu of commands related to xxx (where xxx can be a verb or subject). Another way of finding
commands is to press <F4> on any command line. This will bring up the "Command Grouping
Menu" where each option represents a group of related commands. The first option SLTCMD
("Select Command by Name") can be used to obtain a list of commands using a wildcard
character (e.g. SLTCMD CR* will list all commands starting with CR).
Parameters
A CL command can have zero, one, or more parameters. A command may have some parameters
that are required and some that are optional. A system-defined default value (prefixed by "*") is
usually assigned to an optional parameter if the user does not specify a value for it.
So far in this manual, we have been using the <F4> prompt facility for specifying parameters.
Another way of specifying parameters is the free format or command line method. You may
want to use this method if you remember exactly what parameter information is needed for a
command. Using this method, parameters can be specified in:
1. keyword form,
2. positional form, or
3. a combination of both.
A parameter that is specified in keyword form will have a keyword followed immediately by a
value (or list of values). For example, WRKOBJPDM LIB(YOURLIB) OBJ(SRCFILE) There must
not be any blanks between the keyword and the left parenthesis. Parameters in keyword form can
be specified in any order.
In the positional form, parameters are specified without keywords. The parameter values must be
positionally matched with the keywords in the parameter set for that command. The above
example can be specified in positional form as follows WRKOBJPDM YOURLIB SRCFILE.
Positional parameters are often limited to the first three or four parameters. If you do not want to
specify a value for one of the parameters, the system-defined value, *N, can be entered in the
position of that parameter. For example, the following command will display all objects of type
*FILE in the library YOURLIB. WRKOBJPDM YOURLIB *N *FILE *N will map to the default
value for that parameter, which in this case is *ALL. Note that when using the WRKMBRPDM
command, the file name and library name fields are actually one parameter (a file name plus a
library qualifier). If the reference is to a file in a specific library, the file name must be qualified
with a slash, "/", character in both keyword and positional forms WRKMBRPDM YOURLIB/SRCFILE SRCMBR WRKMBRPDM FILE(YOURLIB/SRCFILE) MBR(SRCMBR)
If only the file name is specified, as in the following statement WRKMBRPDM SRCFILE the library
qualifier will default to the library list (*LIBL).
A CL command can use a combination of both positional and keyword parameters, for example
WRKMBRPDM YOURLIB/SRCFILE MBRTYPE(TXT). Note that the "Member" parameter, which is in
between the second and third parameters in the parameter set, is omitted. One restriction of this
mixed form of specifying parameters is that positional parameters cannot follow keyword
parameters. For example, the following is invalid WRKOBJPDM LIB(YOURLIB) SRCFILE.
Using the SEU Editor
Introduction
The IBM AS/400 provides an integrated set of Application Development Tools (ADT) to design,
develop and maintain applications. One such tool is the Programming Development Manager
(PDM) that offers the following:
Integrated application development environment.
List-oriented selection of items for development or maintenance.
Extendable interface to tools through user-defined options.
Another tool is the Source Entry Utility (SEU) that offers a full screen editor providing syntax
checking of source statements. PDM is one tool that may be used to access the SEU.
In this SEU tutorial, we will use the source member we created in the previous section.
Starting the Editor
Type STRPDM (Start Program Development Manager) on any command line, and press <Enter> .
The PDM menu is displayed. Choose option 3 to Work with members. The "Work with
members" screen shows up. You can also reach this screen by typing WRKMBRPDM (Work with
members using PDM) on any command line and pressing <F4> . In either case, supply the
necessary source file (SRCFILE) and library (YOURLIB) information and press Enter.
Type 2 on the "Opt" line to edit the source member "SRCMBR".
Press <Enter> . You are now in the full-screen EDIT mode.
Columns . . . .: 1 80 Edit
SEU==>_______________________________________________________ SRCMBR
FMT ** ...+... 1 ...+... 2 ...+... 3 ...+... 4 ...+... 5...+... 6 ...+.
*************** Beginning of data ********************************
'''''''
'''''''
'''''''
'''''''
'''''''
'''''''
'''''''
****************** End of data ***********************************
F3=Exit F4=Prompt F5=Refresh
F10=Top F11=Bottom F24=More keys
If you press <Enter> without typing anything, the screen readjusts as shown:
Columns . . . .: 1 80 Edit
SEU==> _______________________________________________________ SRCMBR
FMT ** ...+... 1 ...+... 2 ...+... 3 ...+... 4 ...+... 5...+... 6 ...+.
*************** Beginning of data *********************************
****************** End of data ************************************
F3=Exit F4=Prompt F5=Refresh
F10=Top F11=Bottom F24=More keys
Type I (for insert) on the first line as shown and press <Enter> .
Columns . . . .: 1 80 Edit
SEU==> _______________________________________________________ SRCMBR
FMT ** ...+... 1 ...+... 2 ...+... 3 ...+... 4 ...+... 5...+... 6 ...+. I
*************** Beginning of data *********************************
****************** End of data ************************************
Now, you may start typing in the desired text. Below, we show a sample TEXT document that
will be used in the next section for illustrating the use of various SEU line commands.
Columns . . . .: 1 80 Edit
SEU==> _________________________________________________________ SRCMBR
FMT ** ...+... 1 ...+... 2 ...+... 3 ...+... 4 ...+... 5...+... 6 ...+.
*************** Beginning of data *********************************
0001.00 THIS IS A TEXT DOCUMENT.
0002.00
0003.00 Begin First Block.
0004.00 Text for the first block ...
0005.00 End First Block.
0006.00
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
0010.00
****************** End of data ************************************
Notice the sequence numbers of records at the extreme left. The sequence number field of a
record is used to specify the line commands. For more information on line commands see 'Using
SEU line commands'.
To save the current member and exit SEU follow the following procedure 'Exiting the Editor.'
Exiting the Editor
To exit SEU press <F3>. The exit display shows up:
Exit
Type choices, press Enter.
Change/create member . . . . . . . Y Y=Yes, N=No
Member . . . . . . . . . . . . . SRCMBR____ Name
File . . . . . . . . . . . . . . SRCFILE___ Name
Library . . . . . . . . . . . . YOURLIB___ Name
Text . . . . . . . . . . . . . . Description_for_the_member._____
Resequence member . . . . . . . . Y Y=Yes, N=No
Start . . . . . . . . . . . . . 0001.00___ 0000.01 - 9999.99
Increment . . . . . . . . . . . 01.00____ 00.01 - 99.99
Print member . . . . . . . . . . . N Y=Yes, N=No
Return to editing . . . . . . . . . N Y=Yes, N=No
Go to member list . . . . . . . . . N Y=Yes, N=No
F3=Exit F5=Refresh F12=Cancel
If you wish to save the changes you have made, you may simply press < Enter> .
The default values supplied for most of the options above are self-explanatory. However, note
the following:
If you have decided not to quit the editor, press <F12> to cancel the exit display. This
returns you back to the editing mode.
The default value for 'Change/create member' is Y, if the member is modified, otherwise
N. Type N in this field only if you do not want to save changes made to your member.
The default value for 'Return to editing' option is N, if your member did not have any
syntax errors. However, if syntax errors do persist, the system supplies Y in this field and
returns back to the editing mode ( unless you explicitly type N and force it to exit ).
Using Line Commands
SEU supports various line commands that guide us in editing an existing member. For example,
command C is used to copy lines, command M for moving lines and so on. The SEU line
commands are entered over the digits that make up the sequence number of a record. In the
following discussion, a sample TEXT document is used to illustrate the use of the various
commands. Note: If you type a line command, and then you decide to cancel it, use <F5> to
refresh the screen.
To edit a member that has already been created,
Use the command WRKMBRPDM as explained in the previous section, reach the 'Work
with members using PDM' display.
Use the tab keys to position the cursor at the desired member, and type option 2. The
screen for editing that member will show up.
For example, to edit the member SRCMBR created before, type WRKMBRPDM YOURLIB/SRCFILE
on any command line, and press < Enter> . From the "Work with members using PDM" display,
type option 2 in front of member SRCMBR and press <Enter> . The edit display for this member
is shown:
Columns . . . .: 1 71 Edit YOURLIB/SRCFILE
SEU==> _________________________________________________________ SRCMBR
FMT CB
......-A+++B++++++++++++++++++++++++++++++++++++++++++++++++++++++
*************** Beginning of data ********************************
0001.00 THIS IS A TEXT DOCUMENT.
0002.00
0003.00 Begin First Block.
0004.00 Text for the first block ...
0005.00 End First Block.
0006.00
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
0010.00
****************** End of data ***********************************
F3=Exit F4=Prompt F5=Refresh
F10=Top F11=Bottom F24=More keys
Inserting a line
To insert a line after a particular record, type I (insert) on the sequence number field of that
record, and press <Enter> .
*************** Beginning of data ********************************
I001.00 THIS IS A TEXT DOCUMENT.
0002.00
0003.00 Begin First Block.
0004.00 Text for the first block ...
0005.00 End First Block.
0006.00
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
0010.00
****************** End of data ***********************************
F3=Exit F4=Prompt F5=Refresh
F10=Top F11=Bottom F24=More keys
The screen adjusts as shown below. Type in the line to be inserted and press <Enter> .
Columns . . . .: 1 71 Edit YOURLIB/SRCFILE
SEU==> ________________________________________________________ SRCMBR
FMT CB
......-A+++B+++++++++++++++++++++++++++++++++++++++++++++++++++++ +
*************** Beginning of data ********************************
0001.00 THIS IS A TEXT DOCUMENT.
''''''' PROGRAM-ID. SAMPLE.
0002.00
0003.00 Begin First Block.
0004.00 Text for the first block ...
0005.00 End First Block.
0006.00
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
0010.00
****************** End of data ***********************************
F3=Exit F4=Prompt F5=Refresh
F10=Top F11=Bottom F24=More keys
Copying a line
To copy the "Begin First Block" line to the end of the program, type C (copy) in the sequence
number field, and press Enter. Note the message on the top that indicates a pending Copy line
command.
Columns . . . .: 1 71 Edit YOURLIB/SRCFILE
SEU==> _________________________________________________________ SRCMBR
FMT CB
......-A+++B++++++++++++++++++++++++++++++++++++++++++++++++++++++
*************** Beginning of data ********************************
0001.00 THIS IS A TEXT DOCUMENT.
0001.01 It illustrates the use of SEU line commands.
0002.00
C Begin First Block.
0004.00 Text for the first block ...
0005.00 End First Block.
0006.00
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
0010.00
****************** End of data ***********************************
Type A (after) on the last line as shown, and press Enter. This results in the pending line to be
copied after the line you have indicated.
Columns . . . .: 1 71 Edit YOURLIB/SRCFILE
SEU==> __________________________________________________________ SRCMBR
FMT CB
......-A+++B++++++++++++++++++++++++++++++++++++++++++++++++++++++
*************** Beginning of data********************************
0001.00 THIS IS A TEXT DOCUMENT.
0001.01 It illustrates the use of SEU line commands.
0002.00
C Begin First Block.
0004.00 Text for the first block ...
0005.00 End First Block.
0006.00
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
A010.00
****************** End of data ************************************
The program looks as shown below, after the copy. To move a single line, use the command M
(move) and follow the procedure as explained above for copy.
*************** Beginning of data ********************************
0001.00 THIS IS A TEXT DOCUMENT.
0001.01 It illustrates the use of SEU line commands.
0002.00
0003.00 Begin First Block.
0004.00 Text for the first block ...
0005.00 End First Block.
0006.00
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
0010.00
0011.00 Begin First Block.
****************** End of data ***********************************
Deleting a line
To delete a line, type D (delete) in front of it and press <Enter> . The line that was just copied
may be deleted as shown below:
*************** Beginning of data*****************************
0001.00 THIS IS A TEXT DOCUMENT.
0001.01 It illustrates the use of SEU line commands.
0002.00
0003.00 Begin First Block.
0004.00 Text for the first block ...
0005.00 End First Block.
0006.00
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
0010.00
D011.00 Begin First Block.
****************** End of data ***********************************
Block Move
To move a block, type MM at the beginning and the end of the block, and press <Enter> . Now,
the target for the move has to be specified. The Block Move is illustrated below; the first block
of text being moved after the second one.
*************** Beginning of data ********************************
0001.00 THIS IS A TEXT DOCUMENT.
0001.01 It illustrates the use of SEU line commands.
0002.00
MM Begin First Block.
0004.00 Text for the first block ...
0005.00 End First Block.
MM
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
0010.00
****************** End of data ***********************************
Type A on the last line to move the block to the end of the program.
*************** Beginning of data ********************************
0001.00 THIS IS A TEXT DOCUMENT.
0001.01 It illustrates the use of SEU line commands.
0002.00
MM Begin First Block.
0004.00 Text for the first block ...
0005.00 End First Block.
MM
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
A010.00
****************** End of data ***********************************
Here is the member after the move:
*************** Beginning of data ********************************
0001.00 THIS IS A TEXT DOCUMENT.
0001.01 It illustrates the use of SEU line commands.
0002.00
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
0010.00
0011.00 Begin First Block.
0012.00 Text for the first block ...
0013.00 End First Block.
0014.00
****************** End of data ***********************************
Block Copy
Enclose the block to be copied within CC commands, and specify the target. The block copy
resembles the block move explained above. Note below, that B is specified as the target, to copy
the block before the indicated line.
*************** Beginning of data ********************************
0001.00 THIS IS A TEXT DOCUMENT.
0001.01 It illustrates the use of SEU line commands.
0002.00
CC Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
CC
0011.00 Begin First Block.
0012.00 Text for the first block ...
0013.00 End First Block.
B
****************** End of data ***********************************
Block Delete
To delete a block, enclose it within DD commands and press <Enter> . The block that was just
copied may be deleted as shown:
*************** Beginning of data ********************************
0001.00 THIS IS A TEXT DOCUMENT.
0001.01 It illustrates the use of SEU line commands.
0002.00
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
0010.00
0011.00 Begin First Block.
0012.00 Text for the first block ...
0013.00 End First Block.
DD Begin Second Block.
0013.02 Text for second block ...
0013.03 End Second Block.
DD
0014.00
****************** End of data ***********************************
The source member looks as follows, after our experimentation with the above line commands:
*************** Beginning of data ********************************
0001.00 THIS IS A TEXT DOCUMENT.
0001.01 It illustrates the use of SEU line commands.
0002.00
0007.00 Begin Second Block.
0008.00 Text for second block ...
0009.00 End Second Block.
0010.00
0011.00 Begin First Block.
0012.00 Text for the first block ...
0013.00 End First Block.
0014.00
****************** End of data ***********************************
To get a complete list of commands for SEU place the cursor on the sequence number list and
press the help key.
SEU Commands
SEU commands are entered in the "SEU==>" field at the top of the screen.
FIND
Search for an occurrence of a character string. If the string contains embedded blanks,
apostrophes, or quotation marks, it should be enclosed in quotation marks. Several direction
parameters are available: N (Next), P (Previous), F (First), L (Last), and A (All). The scope of
the search can be specified using search parameters: X (excluded records) and NX (non-excluded
records). The syntax of FIND is FIND string [N,P,A,F,L] [X,NX] [column parameter].
Examples:
F XYZ
F 'hello there'
F *ERR A find all syntax errors
F "'XYZ'"
Use the F16 "Repeat Find" key to find the next occurrence of a string.
CHANGE
Find all occurrences of a character string and replace it with another string. The syntax is CHANGE fstring cstring [N,P,A,F,L] [X,NX] [column parameter]
TOP
Go to the first page of the work screen.
BOTTOM
Go to the last page of the work screen.
SAVE
Save changes and continue editing. SAVE [ [ [ library/ ] file ] member ]
FILE
Save changes and exit from edit session. FILE [ [ [ library/ ] file ] member ]
CANCEL
Cancel session and exit session.
SET
See the IBM SEU manual for more information.
Function Keys in SEU
When a member is being edited, the Edit display supports a diverse set of function keys that
allow you to perform specific tasks.
_____________________________________________________________________________
_
Key Name Function
_____________________________________________________________________________
_
F1 Help Press the help key for details about the display.
F3 Exit End the current task, returns to previous entry
point.
F4 Prompt Provides assistance for the options selected
in the list or a command on a command line.
PDM will fill in the default values.
F5 Refresh Refresh the current display. Rebuilds display and
shows it again.
F10 Cursor Moves the cursor from the data area to the SEU
command line, and from the SEU command line to
the data area.
F11 Previous Record Places the previous record in the prompt.
F13 Change Session Go to the Change Session Defaults Defaults
display.
F14 Find/Change Options Go the Find/Change Options display.
F15 Browse/Copy Options Go the Browse/Copy Options display.
F16 Repeat Find Perform find or repeat current find.
F17 Repeat Change Perform change or repeat current change
function.
F18 DBCS Conversion Perform DBCS conversion.
F19 Left View the info. to the left of the current display.
F20 Right View the info. to the right of the current display.
F23 Select Prompt Go to the Select Prompt display. SEU returns
to the EDIT Session and displays the prompt
after you make a selection.
F24 More keys View the other function keys available for the
current display.
Summary of Line Commands
The Sequence_number field displays the sequence number of the record and is used for entering
SEU line commands. To use a line command, type the command over the digits that make up the
sequence number.
The following is a list of all the valid commands:
A=After Move or copy records after this record.
An=After with repeat n times Move or copy records after this record and repeat these
records n times.
B=Before Move or copy records before this record.
Bn=Before with repeat n times Move or copy records before this record and repeat these
records n times.
C=Copy Line Copy this line to a specified target.
Cn=Copy n lines Copy this line plus the next n-1 lines to the specified target.
CC=Block Copy Copy all lines between the boundaries formed by the two CC commands
CR=Copy records and retain command Copy this record to the specified targets and keep
this command on the display.
CRn=Copy n records and retain command. Copy n records to the specified targets and
keep this command on the display.
CCR=Copy block records and retain command Copy the block of records defined by a
pair of CCR commands to the specified targets and keep this command on the display.
D=Delete Delete the current line.
Dn=Delete n lines Delete the current line and the next n-1 lines.
DD=Block Delete Delete all lines between the two DD boundaries.
F=Display format line
Display a format line.
I=Insert a line Insert a blank line after the current record.
In=Insert n lines Insert n blank lines after this record.
IP=Insert line and prompt Insert a blank line and display the line in a prompt.
L=Shift data 1 char left Shift data in this record one character position to the left without
losing data.
Ln=Shift data n chars left Shift data in this record n character positions to the left without
losing data.
LL=Shift block 1 char to the left Shift data defined by the boundary between and
including the two LL line commands one character position to the left without losing
data.
LLn=Shift block n chars to the left Shift data defined by the boundary between and
including the LLn and LL line commands n character positions to the left.
M=Move a line Move a line to a specified target.
Mn=Move n lines Move the current line and the following n-1 lines to a specified target.
MM=Block Move Move all records between and including the boundaries defined by the
MM line commands to a specified target.
O=Overlay Overlay the current line with the first line defined by the move, copy, or copy
repeated line command.
On=Overlay n lines Overlay this line and the following n-1 lines with the first n lines
defined by the move, copy, or copy repeated line command.
OO=Block overlay Overlay all the records between and including the boundaries defined
by two OO line commands with the lines defined by the move, copy, or copy repeated
line command.
P=Display prompt Type P to display this line in a prompt.
R=Shift data 1 char right Shift data in the current record one character position to the
right without losing data.
Rn=Shift data n chars right Shift data in the current record n character positions to the
right without losing data.
RR=Block shift 1 char to the right Shift data defined by the boundary between and
including the two RR line commands one character position to the right without losing
data.
RRn=Block shift n chars to the right Shift data defined by the boundary between and
including the RRn and RR line commands n character positions to the right, without
losing data.
RP=Repeat line Repeat the current line once before the following line.
RPn=Repeat line n times Repeat the current line n times before the following line.
RPP=Block repeat Repeat all lines defined by the boundary between the two RPP line
commands.
RPPn=Block repeat Repeat all lines defined by the boundary between the two RPP line
commands n times.
SF=Show first record Show the first record of the exclude group.
SFn=Show first n records Show the first n records of the exclude group.
SL=Show last record Show the last record of the exclude group
SLn=Show last n records Show the last n records of the exclude group.
W=Display member from column 1 Display the member beginning in column 1.
Wn=Display member from column n Display the member beginning in column n.
X=Exclude Exclude the current record from the display.
Xn=Exclude plus Exclude the the current record and the next n-1 records.
XX=Block Exclude Exclude all lines between the boundaries formed by the two XX line
commands.
+ (plus sign)=Roll member forward 1 line Roll the member forward one line.
+n=Roll member forward n lines Roll the member forward n lines.
- (minus sign)=Roll member backward 1 line Roll the member backward one line.
-n=Roll member backward n lines Roll the member backward n lines.
n=Absolute Positioning Position the line identified by the sequence number(n) as the first
record on the display.
Steps in Developing a Program
In this section, we are going to use a simple Control Language (CL) program to illustrate the
steps in developing, compiling, and running a program on the AS/400. We will also demonstrate
how to find compilation errors when they occur, and how to obtain information about certain
compilation and runtime errors. The intention here is not to teach CL programming.
The CL program is very simple; all it does is make the library that you have created (in my case,
YOURLIB) the current library while retaining the existing current library on the library list.
First, let's create a source physical (PF-SRC) file called QCLSRC (the IBM-supplied name for a
CL source physical file). The command line form of issuing CL commands will be used in this
section (you may want to use the <F4>prompt facility to assist you if you are not familiar with
the commands). The following creates a PF-SRC file in the library ALIBRARY. ALIBRARY
represents the library that has the same name as your user profile or your other library, that is the
one you created in an earlier section.
CRTSRCPF FILE(ALIBRARY/QCLSRC)
Once the PF-SRC file has been created, work with the file by typing:
WRKMBRPDM FILE(ALIBRARY/QCLSRC)
Then create a source member called TEST in QCLSRC by pressing <F6> . This will start the
SEU editor. Enter TEST for the name of the source member, CLP for the source type (to see
what source types are available, put the cursor on the "Source type" field and press <F4> ), and a
brief description of the source member. Once you have entered all the necessary information,
press <Enter> . You will enter a SEU editing session. Type in the following program:
*************** Beginning of data ********************************
0002.00 PGM
0003.00 DCL VAR(&OLDCURLIB) TYPE(*CHAR) LEN(10)
0004.00 RTVJOBA CURLIB(&OLDCURLIB)
0005.00 CHGCURLIB CURLIB(&YOURLIB) /* intentional error */
0006.00 ADDLIBLE LIB(&OLDCURLIB)
0007.00 ENDPGM
****************** End of data ***********************************
You can use the SEU line command, IP (insert line and prompt), to help you in selecting a CL
command. Also, note that CL programs are "free format" in that components of CL statements
do not have to be placed in particular columns on the screen (some source types, such as RPG,
are "fixed-format"; the IP line command can help enormously in coding such programs).
A CL program begins with the PGM command, which is optional if the CL program does not
receive any parameters. (Aside: If a CL program has a parameter named &MYVAR, the PGM
statement is coded as: PGM PARM(&MYVAR). The ampersand symbol, "&", denotes that
&MYVAR is a variable. In this case, &MYVAR will be used to hold the parameter's value.
Moreover, the variable &MYVAR has to be declared using the DCL command.) For more
information, the reader is referred to the IBM "CL Programmer's Guide" or the online education
modules: "AS/400 Control Language Programming" in the "Tutorial Support System" course,
and the modules "Creating a Control Language Program" and "How to Use Error Handling
Facilities" in the "Facilities and Implementation" course.
The second statement declares a CL variable called &OLDCURLIB. This variable will be used
to save the name of the existing current library. The variable will be used to hold a character
string with a maximum length of 10. Note that SEU provides syntax checking for CL programs.
Remove the parameters of DCL so that the statement contains only "DCL", and press <Enter> .
SEU will highlight that statement, indicating that there is a syntax error. SEU will not let you
exit an editing session that has syntax errors unless you explicitly specify that you want to exit in
the exit screen. Put the parameters back on the DCL statement.
The RTVJOBA command, on the third statement, is used to retrieve the name of the job's
existing current library, saving it in the variable &OLDCURLIB. The reason for this step will be
explained shortly.
The CHGCURLIB command, on the fourth statement, is used to make YOURLIB the new
current library (where "YOURLIB" is any existing library that you have access to). Notice that
we have intentionally introduced an error in this statement. We have mistakenly prefixed
YOURLIB with "&", that is we really want CHGCURLIB CURLIB(YOURLIB) instead of
CHGCURLIB CURLIB(&YOURLIB).
A name with "&" as its prefix denotes that it is a CL variable. This is an error because if we
intended &YOURLIB to be a variable, it must be declared in a DCL statement. Note that SEU
cannot detect this kind of error. This error will be detected during compilation.
The ADDLIBLE command, on the fifth statement, adds the name of the former current library
(which we saved in the variable &OLDCURLIB in the RTVJOBA statement) to the library list.
This step is needed if we want this library to stay on the library list. This is because when the
CHGCURLIB command is executed, the "old" current library will not be retained on the library
list. Hence, the need to use RTVJOBA to save the name of that library, and to add it back on the
library list using ADDLIBLE. The last statement, ENDPGM, indicates the end of the CL
program. Now, exit and save the program as it is (i.e. with the error).
Compiling a Program
In the "Work with Members using PDM" screen, enter option 14 to compile the member that
contain the CL source program. Option 14, in this case, will invoke the CRTCLPGM (Create CL
Program) command. Option 14 will invoke a different "create program" command for a different
source type (e.g. if the source type is CBL, it will invoke the CRTCBLPGM command). If you
prompt on the option (ie. press <F4> when you use option 14), you will see the following screen:
Create CL Program (CRTCLPGM)
Type choices, press Enter.
Program . . . . . . . . . . . . > TEST Name, *PGMID
Library . . . . . . . . . . . > ALIBRARY Name, *CURLIB
Source file . . . . . . . . . . > QCLSRC Name
Library . . . . . . . . . . . > ALIBRARY Name, *LIBL, *CURLIB
Source member . . . . . . . . . > TEST Name, *PGM
Generation severity level . . . 29 0-29
Text 'description' . . . . . . . *SRCMBRTXT
Additional Parameters
Replace program . . . . . . . . > *YES *NO, *YES
Bottom
F3=Exit F4=Prompt F5=Refresh F10=Additional parameters F12=Cancel
F13=How to use this display F24=More keys
The "Program" field specifies the name of the *PGM object that will be created if the
compilation is successful. This name defaults to name of the source member. The "Library" field
specifies the library that will contain the *PGM object. The default is the library that contains the
source member. You can change these default values. Unless you want to rename the *PGM
object or put it in another library, accept the defaults.
On pressing <Enter> , you will see a message at the bottom of the screen saying that the
compilation job has been submitted to QBATCH, which is the job queue for batch jobs. If there
are no compilation errors, you will receive a message saying that the job completed normally.
Since there is an error in the above program, a message will return saying that the job has ended
abnormally, meaning there are compilation errors. Press <Enter>to continue.
Finding Compilation Errors
To find out the cause of the compilation error, type WRKSPLF to see what's in your output
queue. There should be a spooled file with the same name as your source member (the compiler
listing) and a job log (QPJOBLOG). Type 5 against QPJOBLOG to display it. There should be a
message stating that the program was not created because of compilation error. The message will
refer you to the compiler listing of the program. Press <Enter> to exit this display. Type 5 to
display the contents of the compiler listing of the program. A segment of that listing is presented
here:
200- PGM
300- DCL VAR(&OLDCURLIB) TYPE(*CHAR) LEN(10)
400- RTVJOBA CURLIB(&OLDCURLIB)
500- CHGCURLIB CURLIB(&YOURLIB)
* CPD0727 40 Variable '&YOURLIB ' is referred to but not declared.
600- ADDLIBLE LIB(&OLDCURLIB)
700- ENDPGM
* * * * * E N D O F S O U R C E * * * *
*
5738SS1 V2R1M1 920306 Control Language YOURLIB/TEST
Cross Reference
Declared Variables
Name Defined Type Length References
&OLDCURLIB 300 *CHAR 10 400 600
* CPD0791 00 No labels used in program.
* * * * * E N D O F C R O S S R E F E R E N C E
*
5738SS1 V2R1M1 920306 Control Language YOURLIB/TEST
Message Summary
Severity
Total 0-9 10-19 20-29 30-39 40-49 50-59 60-69 70-79 80-89 90-
99
2 1 0 0 0 1 0 0 0 0 0
Program TEST not created in library YOURLIB. Maximum error severity 40.
There are two errors in the listing (errors are marked with "*" in column 1): the first with a
severity of 40 and the second with severity of 0. The second error is only an information
message; it is not the cause of the compilation failure. The meaning of first error is evident; it is
the cause of the failure. You can use the DSPMSGD (Display Message Description) command to
get more information about a compilation error. For example, to get more details about the error
CPD0727 DSPMSGD RANGE(CPD0727) MSGF(QCPFMSG) where QCPFMSG is the system message
file and CPD0727 is the message ID. Let's go back to the source member and fix the problem.
Using SEU to Find Compilation Errors
You may want to use SEU to view your compiler listing instead of the way discussed above,
especially if the compiler listing is too lengthy to scan by eye. SEU provides special support for
locating compilation errors. To view a spooled file while you are in SEU, press <F15>
(Browse/Copy). Enter 2 in the selection field. Place the cursor on the "Browse/copy spool file"
field and press <F4>. Select the appropriate spool file. On return to the editing session, you
should see a split screen with the member you are editing on top and the spooled file on the
bottom. To find compilation errors, in the bottom screen type FIND *ERR on the SEU command
line (or simply, F *ERR). An advantage of using SEU for this purpose is that you can see both
the source member and the compiler listing on the same screen, and make the corrections to the
source member on the spot.
Using SEU, edit the source member to remove the ampersand, "&", from YOURLIB. The
program should compile normally after this change. To make the situation more interesting, let's
introduce another type of error. In the ADDLIBLE statement, specify some library name that you
do not own or one that you are not authorized to use. In our example, we specify a nonexistent
library called DOGNAP, that is ADDLIBLE DOGNAP. The rest of the source remain the same as
before (except for removing the ampersand character). Compile the source member (you will
probably be asked if you want to delete the existing *PGM object. Respond with a "Y"). The
program should compile normally. The *PGM object will be created in the library that contains
your source file unless you specified otherwise.
Running a Program
Use the WRKOBJPDM command to work with the library that contain the *PGM object that
was created. Type 16 against the *PGM object to run/execute it. Alternatively, you can run the
program by using the CALL command (in fact, option 16 invokes the CALL command). If the
library that contains the *PGM object is in your library list, type CALL TEST on a command line.
If the library is not in your library list, you can still run the program by qualifying it with the
library name CALL ALIBRARY/TEST The example program used here does not take any input
parameters. But if you created a program that requires an input parameter(s), you can pass the
parameter value(s) by prompting on either the option 16 or the CALL command. If your program
takes more than one input parameter, type '+' on the "Parameters" field and press <Enter> . This
will bring another screen that allows you to enter multiple parameters. You can also us pass
parameters using the command line method. For example, CALL MYPROG PARM(parameter1 parameter2 ...)
Diagnosing Runtime Errors
In any case, when you run the program, you will get a runtime or object error message similar to
the one below:
Display Program Messages
Job 287471/T03/DSP02 started on 07/20/92 at 13:48:44 in subsystem QINTER
CPF2110 received by TEST at 600. (C D I R)
Type reply, press Enter.
Reply . . . ________________________________________________________
F3=Exit F12=Cancel
To find out the cause of the error, place the cursor on the message id (in this case CPF2110) and
press <F1>. You see a screen similar to the one below. The message text, in this case, indicated
clearly what the problem is, i.e. the library DOGNAP was not found. Sometimes you can obtain
additional messages by pressing <F10> to display messages in the job log.
Additional Message Information
Message ID . . . . . . : CPA0701 Severity . . . . . .: 99
Message type . . . . . : INQUIRY
Date sent . . . . . . . : 07/20/92 Time sent . . . . .: 14:00:05
From program . . . . . : QCLXERR Instruction . . . .: 0000
To program . . . . . . : *EXT Instruction . . . .: 0000
Message . . . . : CPF2110 received by TEST at 600. (C D I R)
Cause . . . . . : Control language (CL) program TEST inlibrary YOURLIB
detected an error at statement number 600. Message text for CPF2110 is:
Library DOGNAP not found.
Recovery . . . : This inquiry message can be avoided bychanging the
program. Monitor for the error (MONMSG command) and perform error
recovery within the program. To continue, choose a reply value.
Possible choices for replying to message . . . . . . . . . . . . . . . :
C -- Cancel the CL program.
D -- Dump the CL program variables and cancel the CL program.
I -- Ignore the failing command.
More...
Press Enter to continue.
F3=Exit F10=Display messages in job log F12=Cancel
Again, the DSPMSGD ("Display Message Description") command can be used to obtain more
information about the error. For example, DSPMSGD RANGE(CPF2110) MSGF(QCPFMSG) where
QCPFMSG is the system message file and CPF2110 is the message ID.
Press <Enter> to cancel the program. Go back to the source member, fix the error, and
recompile. The next time you run the program, it should run without any problems. Type
DSPLIBL to check whether the library has been added and whether it has been made the current
library.
Creating an Initial Program
An initial program is similar to the AUTOEXEC.BAT file in MS-DOS. It is executed when the
user logs on. The initial program has to reside in your default library (i.e. the library with the
same name as your user profile) and it has to be named INITIALPGM. For instance, you can
make the above CL program your initial program. Rename the source member to INITIALPGM
and recompile it. If you created the source member in a another library, when you recompile it
using the option 14, press < F4>to prompt on it. Specify your default library as the library where
the *PGM object is to be stored.
Understanding Object Authorities
Introduction
To maintain security of data and/or program objects the AS/400 offers a variety of options
available to limit access to object. These authorities must be set to secure object to the level of
security required. Likewise, if objects are to be shared or used between users, the object
authorities must be relaxed correctly to maintain object integrity. This section is designed to help
users maintain correct authorities and to understand the authorities on the objects that they own.
Authorities and their meanings
Object Authorities
Object authority is used to control access to an object including the ability to see an object
description, control read and write access to an object, or control an object's existence.
*OBJMGT
provides the authority to specify the security (grant/revoke object authority), move or
rename the object, and add members to database file.
*OBJEXIST
provides the authority to control the object existence and ownership. The user with this
authority can delete, save, and transfer ownership of the object.
*OBJOPR
provides the authority to look at the description of an object and use the object as
determined by the data authority that the user has to the object.
Data Authorities
Data authority is the authority to access data contained in an object, for example records in a
database file. This includes the ability to view, update, add, or delete records.
*READ
provides the authority to get the contents or an entry in an object or to run a program.
*ADD
provides the authority to add entries to an object.
*UPD
provides the authority to change the entries in an object.
*DLT
provides the authority to remove entries from an object.
Combinations of Object and Data Authorities
These are keywords, each representing predefined combination of object and data authorities.
They reduce the time required to assign specific authorities to users.
*ALL
allows the user to perform all authorized operations (object and data) on the object.
*CHANGE
provides *OBJOPR authority and all data authority.
*USE
provides *OBJOPR authority and data read authority.
*EXCLUDE
authority prevents the user from accessing the object even if *PUBLIC is authorized.
In addition to these, users can create customized combinations of object and data authorities.
Changing authorities with EDTOBJAUT
We use an example here to illustrate the use of some of the types of authorities discussed above.
In this example, we want to allow a certain user to copy a member from the file "SRCFILE"
which is stored in the library "YOURLIB". First of all, we need to allow the user to have access
to the library "YOURLIB". To do that, we use the "Edit Object Authority", EDTOBJAUT,
command to edit the authority on "YOURLIB". (Note that your default library, i.e. the library
that has the same name as your user profile, is normally owned by your security officer so you
cannot change its authorities). Type EDTOBJAUT on a command line and press <F4>. Fill in
the blanks for object, library, and object type (*LIB) and press <Enter> .
Edit Object Authority (EDTOBJAUT)
Type choices, press Enter.
Object . . . . . . . . . . . . . > YOURLIB Name
Library . . . . . . . . . . . *LIBL Name, *LIBL, *CURLIB
Object type . . . . . . . . . . > *LIB *ALRTBL, *AUTL, *CFGL...
To see the detail screen as shown below, press <F11>. Note that the owner of "YOURLIB" has
*ALL authority on the object.
Edit Object Authority
Object . . . . . . . : YOURLIB Object type . . . . : *LIB
Library . . . . . : QSYS Owner . . . . . . . : JOHNDOE
Type changes to current authorities, press Enter.
Object secured by authorization list . . . . . . . . . . . .: *NONE
Object ----Object----- ----------Data-----------
User Authority Opr Mgt Exist Read Add Update Delete
JOHNDOE *ALL X X X X X X X
*PUBLIC *EXCLUDE _ _ _ _ _ _ _
F3=Exit F5=Refresh F6=Add new users F10=Grant with reference object
F11=Nondisplay detail F12=Cancel F17=Top F18=Bottom
Press <F6> to add a user to the list of users authorized to this object. Type in the name of the
user and *USE for the object authority. Press <Enter> to return to the previous screen. Notice
that *USE gives the user *OBJOPR and *READ authorities on "YOURLIB". (Note: If you want
to edit a specific authority, type "X" in the position relating to that authority to grant authority or
a space to delete that authority.)
Next, we need to allow the user access to the file "SRCFILE". Use EDTOBJAUT to edit the
authority on the file "SRCFILE". Type EDTOBJAUT OBJ(YOURLIB/SRCFILE) OBJTYPE(*FILE)
or use the prompt to fill in the parameters. Press <F6> to add the user to the authorization list
with *USE authority. This will allow them to do perform various operations on "SRCFILE"
including copying members from the file. To allow them to copy the entire file (i.e.
"SRCFILE"), *OBJMGT must be granted. To do that, type "X" under "Mgt" in the detail screen
for that user. Note that the object authority changes from *USE to USER DEF (meaning a
customized authority).
Changing Authorities with GRTOBJAUT and RVKOBJAUT
To use GRTOBJAUT and RVKOBJAUT type the command and prompt <F4>. Fill in the library
name, object name, object type along with the user you are granting authorities and the
respective authority being granted. At any time press <F1> for more help.
Sending and Receiving Network Files
Users can send and receive network files to and from each other. The "Send Network File"
(SNDNETF) command can be used to send a member of a physical database file (PF-DTA or
PF-SRC) to another user. In the example shown below, the member "SNDMBR" of the physical
database file "SNDFILE" (which is contained in the library "SNDLIB") is to be sent to the user
"RCV". "MKTAS400" is the address of the AS/400 at Minnesota State University, Mankato.
When the network file arrives at its destination, a message is sent to both the sender and receiver.
Send Network File (SNDNETF)
Type choices, press Enter.
File . . . . . . . . . . . . . . > SNDFILE___ Name
Library . . . . . . . . . . . > SNDLIB____ Name, *LIBL, *CURLIB
User ID: _
User ID . . . . . . . . . . . > RCV_______ Character value
Address . . . . . . . . . . . > MKTAS400__ Character value
+ for more values _
Member . . . . . . . . . . . . . > SNDMBR____ Name, *FIRST
Additional Parameters
To file type . . . . . . . . . . *FROMFILE_ *FROMFILE, *DATA
VM/MVS class . . . . . . . . . . A A, B, C, D, E, F, G, H, I
Send priority . . . . . . . . . *NORMAL__ *NORMAL, *HIGH
F3=Exit F4=Prompt F5=Refresh F12=Cancel F13=How to use this display
F24=More keys
The receiver will have to run the "Work with Network Files" (WRKNETF) command to inspect
their network files.
Work with Network Files (WRKNETF)
User . . . . . . . . . . . . : RCV_______
User ID/Address . . . . . . : RCV_______ MKTAS400
Type options, press Enter.
1=Receive network file 3=Submit job 4=Delete network file
5=Display physical file member
File -------From-------
----Arrival----
Opt File Member Number User ID Address Date Time
__ SNDFILE SNDMBR 1 SENDER MKTAS400 08/26/92 16:37
F3=Exit F4=Prompt F5=Refresh F9=Retrieve F11=Display type/records
F12=Cancel
Type 1 in the "Opt" blank in front of the network file to receive and press <F4>to prompt. The
following screen will show up.
Receive Network File (RCVNETF)
Type choices, press Enter.
From file . . . . . . . . . . . > 'SNDFILE'__ Character value
To data base file . . . . . . . *FROMFILE__ Name, *FROMFILE
Library . . . . . . . . . . . *LIBL____ Name, *LIBL, *CURLIB
Member to be received . . . . . > 'SNDMBR'__ Character value, *ONLY
To member . . . . . . . . . . . *FROMMBR____ Name, *FROMMBR, *FIRST
F3=Exit F4=Prompt F5=Refresh F10=Additional parameters F12=Cancel
F13=How to use this display F24=More keys
Fill in the "To data base file", "Library", and "To member" blanks with the appropriate receiving
file, library and member names and press <Enter>. Note that the receiving file must already exist
before trying to receive members.
Printing Procedure
When programs on the AS/400 produce output intended to be printed the material does not go
directly to the printer. Instead the output is bundled together with other output in an object called
an "output queue" (*OUTQ). These sub objects are called "spooled files." To send these spooled
files to a printer, first you must work with your output queue; then, change the attributes of the
desired spooled file, specifying the correct print device name.
There are several ways by which spooled files are generated. Here are some:
From the WRKMBRPDM display, option 6 in front of the desired member will generate
a spooled file that is your program member.
Pressing the Print Screen key (<Shift><Print Screen>on the PS/2 running PC-Support or
<Ctrl>p on the ASCII connections) will generate a spooled file of the current display.
Note that if you do a print screen, you will have to press the <Reset>key to clear the
message at the bottom of the screen in order to continue your session.
The system automatically generates spooled files in some cases like presenting job log,
information on processed records for a database file and abnormal job end conditions.
Moving a Spooled File to a Writer
To get a physical copy of a spooled file on your output queue, two facts must be true. First, the
spooled file must be placed on a started writer and second, the spooled file must have a status of
released. To work with your spooled files on your output queue type WRKSPLF and press <Enter>.
This screen allows you to do many things with your spooled files.
Note: If this is the first time that you are using the WRKSPLF command, you should change the
"assistance level" for this screen. To do this press <F21>and change the assistance level from
"basic" to intermediate". This will gives you more features on the screen. Try pressing the
<F10>or <F11>keys to obtain different views of your spooled files.
Typing 2 in the option field of spooled file in the WRKSPLF screen will change the spooled
file's attributes. The attributes that you will be interested in are the "Print device" and "Save file".
By changing the attribute "Print device" from "*OUTQ" to a valid printer (use the WRKWTR
command to find out which printers are available), you will move your spooled file from your
output queue to a printer writer. The printer writer names at MSU are:
Printer Name Width/Paper Printer Type Location
PRT01 132 Col. 11" Line Printer Morris Hall
VAXPRTS2 132 Col. 11" Line Printer MSU ACC
PS/2 printers 132/80 8.5" Dot Matrix MSU ACC Lab Rooms
If "Save file" is changed from "*NO" to "*YES" the spooled file will not be deleted after the file
has been printed.
Typing 3 in the option field of spooled file in the WRKSPLF screen will keep the spooled file
from printing if placed on a printer writer and change the status to *HLD.
Typing 4 in the option field of spooled file in the WRKSPLF screen will delete the spooled file
from your output queue. Spooled files should be deleted as soon as they are not needed to reduce
clutter in your output queue.
Typing 5 in the option field of spooled file in the WRKSPLF screen will allow you to view your
spooled file.
Typing 6 in the option field of spooled file in the WRKSPLF screen will will release a file that is
held to become available to print and will change its status to *RDY.
If you printed to VAXPRTS2, your printouts can be picked up in the ACC printer area at any
time. VAXPRTS2 is a printer that is connected to VAX1. The printer will never say it is started
although it actually is. Normally you will not be authorized to print to writer PRT01. This printer
is the system printer.
Printing to a PS/2 Printer
To see which PS/2 printers are available for printing from the AS/400, type WRKWTR ("Work with
Writers"). The name of the printer is: "PC0" (i.e. "P" + "C" + zero) + the number of the PS/2 to
which the printer is connected + "S2" (e.g. PC0614S2). Make sure that the printer you want to
print to has been started. For the printer to be started, the PS/2 workstation that is connected to
the printer must be signed on to the AS/400. Also, make sure that the printer is ready for
printing. Press <Alt><Esc>on the computer that is attached to the printer to display the status of
the printer; make sure it says "Ready". If not, select the "stop" option and then select "start". Also
make sure the printer's status is "ONLINE".
Step by Step Printing Example
Type WRKSPLF { or OQ } Press <Enter>.
This will allow you to work with your spooled files.
Use the <Field EXIT>key or <Tab>to move to the desired spool file.
This will move us to the correct spool file option field.
Type 5 in the option field.
This will mark the spool file for displaying.
Press <Enter> .
This will display the spool file.
Press <Enter>.
This will bring you back to the work with spool file screen.
Press 2 <Enter>.
This will permit you to change the spool file attributes.
Type in the name of the printer <Enter>.
This will move the file to the printer writer.
Press the <F5>key.
This will refresh the screen to show you the current status of your spooled files.
If the STS (status) is RDY or WTR the printer will print your spooled file. If the status is HLD
then release it by typing a 6 in the option field of the spooled file and press <Enter>.
More Printing Help
For more help on printing type STRSCHIDX <Enter>then type SPOOLED QUEUES <Enter>.
Common Problems
Note that the command keys used in this section are those of the PS/2 running PC Support.
Stopping Infinite Loops/Ending a Previous Request
If you have issued a command and it is taking too long finish it may be an infinite, endless, loop.
To stop your infinite loop:
Press <Left Ctrl> (this will reset any keyboard errors)
Press <Alt><Print Screen>(this sequence is call "System Request")
Type 2. (This is the option on System Request to end a previous request.)
Press <Enter> . Note: You can also press <Alt><Print Screen>and press <Enter>to
display a menu of system requests, and then select the appropriate command.
Ending Disconnected Jobs with Infinite Loops
If for some reason you have been disconnect from the system while executing an infinite loop
request the job may continue to execute. This will cause the system to run very slowly. To end
the disconnected job:
On a command line, type the "Work with Active Jobs" command: WRKACTJOB and
press <Enter> . The locally-defined alias for WRKACTJOB, AJ, can also be used.
On the "Work with Active Jobs" display, type option 4 (End) against the job that is
causing the loop and press <F4>to prompt on the option. In the "How to end" field, type
in *IMMED i.e. to end the job immediately.
Press <Enter>.
Out of Storage Quota Errors
Depending on the specific class that requires use of the AS/400 there is a maximum storage
quota allocated to your user profile. You can see this information by typing: DSPUSRPRF
username. Because OS/400 retains every version of a *PGM object that results from a
compilation, your storage can be used up very quickly. When you have exceeded (or nearly
exceeded) your storage quota and you try to start, for example, SEU, you may get an error
message "Error found on SEU command". To deal with this problem, you must clear the *PGM
objects from library QRPLOBJ. To do this type WRKOBJPDM QRPLOBJ. You may get an authority
problem do to the fact that you do not own all of the object in that library. The command will
clear your objects out regaurdless of the error.
DDS and Data Files on the AS/400
Creating a data file
The following discussion assumes that you already have a source physical file in your current
library. We will continue to use SRCFILE in library YOURLIB for explanation. The reader must
substitute the appropriate names for source physical file and library, where applicable.
The first step is to to reach the 'Work with members using PDM' display. This can be done by
typing WRKMBRPDM YOURLIB/SRCFILE on any command line.
To create a data file member, you have to start the Source Entry Utility. Press <F6> from the
'Work with members using PDM' display or type STRSEU on any command line and press
<F4>. The following screen shows up:
Start Source Entry Utility (STRSEU)
Type choices, press Enter.
Source file . . . . . . . . . . *PRV______ Name, *PRV
Library . . . . . . . . . . . __________ Name, *LIBL, *CURLIB, *PRV
Source member . . . . . . . . . *PRV______ Name, *PRV, *SELECT
Source type . . . . . . . . . . *SAME_____ Name, *SAME, BAS, BASP,
C...
Option . . . . . . . . . . . . . *BLANK____ *BLANK, ' ', 2, 5, 6
Text 'description' . . . . . . . *BLANK_________________________________
The Source type for a data file must be specified as PF, this type denotes aPhysical File. For
example, to create a data file called TESTDATA in the source file SRCFILE in library
YOURLIB, fill in the fields as shown:
Start Source Entry Utility (STRSEU)
Type choices, press Enter.
Source file . . . . . . . . . . SRCFILE___ Name, *PRV
Library . . . . . . . . . . . YOURLIB___ Name, *LIBL, *CURLIB, *PRV
Source member . . . . . . . . . TESTDATA__ Name, *PRV, *SELECT
Source type . . . . . . . . . . PF________ Name, *SAME, BAS, BASP,
C...
Option . . . . . . . . . . . . . *BLANK____ *BLANK, ' ', 2, 5, 6
Text 'description' . . . . . . . Your_description_for_the_member_...______
The Edit display shows up. It is convenient to use the prompt facility for defining the DDS
source. The prompter helps you to supply the source information in the correct format. Press
<F4> to invoke the prompter and <F12>to cancel it.
When the prompter is invoked, the screen looks as shown:
Find . . . _____________________________________________________
TESTDATA
FMT PF
.....A..........T.Name++++++RLen++TDpB......Functions++++++++++++++++++
*************** Beginning of data
*************************************
0001.00
****************** End of data
****************************************
Prompt type . . . PF Sequence number . . . 0001.00
Name Data Decimal
Type Name Ref Length Type Positions Use
_ _____ _ ______ _ ___ _
Functions ___________________________
F3=Exit F4=Prompt F5=Refresh F10=Top
F11=Bottom F12=Cancel F24=More keys
An explanation of the different fields shown above follows: The fields marked with * are not
commonly used, so for normal applications you may conveniently ignore them.
Name_Type
Choose one of the following:
Blank
Leave the field blank to indicate a field name.
R
Type R in column 17 to indicate a record format name.
K
Type K in column 17 to indicate a key field name.
Name
Type a record format, field, or key field name in this position. The maximum length
allowed is 10 characters, beginning in column 19.
Reference (*)
Type R in this field to use the reference function to copy attributes of a previously
defined named field to the field you are now defining.
Length
Type a value to indicate the number of characters in a character field or the number of
digits in a numeric field. For example, for Character type the range is 1-32766, for
Packed decimal the range is 1-31 digits and so on.
Data_Type
Choose one of the following:
A
for character data.
P
for packed decimal data.
S
for zoned decimal data.
B
for zoned binary data.
F
for floating point data.
H
for hexadecimal data.
Decimal_Positions
Type a value from 0 through 31 to indicate the number of decimal positions to the right
of the decimal point within a packed decimal, a zoned decimal, a floating point, or a
binary field.
Use (*)
Type B or leave the field blank to indicate a field used for both input and output.
Functions (*)
Type in keyword entries valid for defining physical files in positions 45 through 80 of
this field.
The DDS source for TESTDATA is shown below. RECFMT1 is the record format name. There
are two fields in the data file, FIELD1 and FIELD2. FIELD1 is of character data type with length
10, and FIELD2 is a packed decimal of length 5 with 2 decimal positions. The last line of the
member declares FIELD1 to be the key field.
Find . . . __________________________________________________________ TST1
FMT PF
.....A..........T.Name++++++RLen++TDpB......Functions++++++++++++++++++
*************** Beginning of data
*************************************
0000.01
0001.00 R RECFMT1
0002.00 FIELD1 10A
0003.00 FIELD2 5P 2
0004.00 K FIELD1
0005.00
****************** End of data
****************************************
F3=Exit F4=Prompt F5=Refresh
F10=Top F11=Bottom F24=More keys
Press <F3>and hit <Enter>to save the member TESTDATA. For more details about exiting SEU
refer to the section 'How to exit SEU'.
The member TESTDATA that was just created contains only the definition of the data file and
hence our the next step is to actually create the file. This can be done by compiling the member
we have just created. From the 'Work with members using PDM' display, position the cursor at
member TESTDATA, and choose option 14 (compile). If the compilation is successful, the file
TESTDATA will be created in YOURLIB. Otherwise, look into your spooled file (WRKSPLF)
and identify the problem.
Loading a data file
To load a data file, use the command UPDDTA (Update Data Area). Type UPDDTA on any
command line and press <F4>. The following screen shows up:
Update Data with Temp Program (UPDDTA)
Type choices, press Enter.
Data base file . . . . . . . . . __________ Name
Library . . . . . . . . . . . *LIBL_____ Name, *LIBL, *CURLIB
Member . . . . . . . . . . . . . *FIRST______ Name, *FIRST
Bottom
F3=Exit F4=Prompt F5=Refresh F12=Cancel F13=How to use this display
F24=More keys
Supply the values for the data base file to be loaded and the library it is contained in, and press
<Enter>. For example, to populate our file TESTDATA we would fill in the values as shown:
Update Data with Temp Program (UPDDTA)
Type choices, press Enter.
Data base file . . . . . . . . . TESTDATA__ Name
Library . . . . . . . . . . . YOURLIB__ Name, *LIBL, *CURLIB
Member . . . . . . . . . . . . . *FIRST____ Name, *FIRST
Bottom
F3=Exit F4=Prompt F5=Refresh F12=Cancel F13=How to use this display
Enter the values for different fields and press Enter>. To stop the process of loading the data file,
press <F3>and press < Enter>.
Screen Design Using SDA
To aid in the creation of user interfaces on the AS/400, the operating system includes a utility
called SDA (Screen Design Aid). This system allows a programmer to "paint" screens and
menus used by a program from within a simple editor, defining input and output fields and
special text attributes. These screens may then be called from an application program, allowing
the program to have all the features of the AS/400 user interface without direct programming of
the appearance of the interface.
This section will only cover those aspects of screen design not related to interfacing with
applications. For information on this area, see the manual for the language of the application
source.
Starting SDA
The first steps in creating a set of screens for a program are the same as those for creating a
program source member. A source physical file must be created (or one already in existence may
be used) and a member must be created in the PF-SRC to hold the screens.
To create the screen design member, issue the command STRSDA (for STaRt SDA) from a
command line. A menu of options will appear which allow you to create a screen, create a menu,
or test a design. Choosing the first option brings the following screen:
Design Screens
Type choices, press Enter.
Design option . . . . . . _ 1=Select file keywords
2=Select record keywords
3=Select subfile keywords
4=Select subfile control keywords
5=Define screen image (fields)
6=Save DDS source, create object
Record . . . . . . . . . __________ Name, F4 for Record list
Additional records . . . __________ Name
(to be displayed on Work Screen)
Source file . . . . . . . QDDSSRC___ Name
Library . . . . . . . . *LIBL_____ Name, *LIBL, *CURLIB
Member . . . . . . . . . __________ Name, F4 for Member list
Source type . . . . . . . __________ DSPF,
Blank for default
F3=Exit F4=Prompt F12=Cancel
Since no screen design exists yet, it is necessary to first create one using the "5" option on the
"Design option line". Also, a source file must be provided, and a member specified. If the
member does not yet exist, it will be created. Finally, a record name must be given. Since each
member can have several records, a single screen design member could contain any number of
screens, with each one given a distinct record name. Once the information is entered, the screen
should look like this:
Design Screens
Type choices, press Enter.
Design option . . . . . . 5 1=Select file keywords
2=Select record keywords
3=Select subfile keywords
4=Select subfile control keywords
5=Define screen image (fields)
6=Save DDS source, create object
Record . . . . . . . . . SCREEN1___ Name, F4 for Record list
Additional records . . . __________ Name
(to be displayed
on Work Screen)
Source file . . . . . . . SRCFILE___ Name
Library . . . . . . . . YOURLIB___ Name, *LIBL, *CURLIB
Member . . . . . . . . . SCRNMBR___ Name, F4 for Member list
Source type . . . . . . . __________ DSPF,
Blank for default
F3=Exit F4=Prompt F12=Cancel
The "SOURCE TYPE" field may be left blank. It will default to the proper type for SDA.
These options will start SDA on a screen named SCREEN1 in the member SCRNMBR of file
SRCFILE in library YOURLIB. Pressing <Enter> will bring up the main SDA display. This is
simply a blank "pasteboard" on which you may place text and fields.
Using The Work Screen
Use the Work Screen to design the display you are creating. On the Work Screen you can add
fields and constants, place fields you have selected from a database, move, copy, shift, and
remove fields, and add or remove attributes and colors. You can also perform additional
operations, such as requesting extended field definition.
You can use the following function keys on the Work Screen:
F1=Help
Press <F1> to show the same information as the help key. <F1> is active on all displays
but does not appear in the function key area.
F3=Exit
Press <F3> to have the Design Screens display appear.
F4=Prompt
Press <F4> to have the Work with Fields display appear.
F6=Condition
Press <F6> to have the Condition Work Screen display appear.
F10=Database
Press <F10> to have the Select Data Base Files display appear.
F11=Switch
Press <F11>to display a list of selected database fields on the bottom row of the Work
Screen. Press <F11>to switch back and forth between the list of selected data base fields
and the list of not selected database fields.
F12=Cancel
Press <F12>to save your work and continue to the Design Screens display.
F14=Ruler
Press <F14>to place a vertical and horizontal ruler on the Work Screen where you
position the cursor. The ruler does not interfere with your data. Press <F14>to remove the
ruler. Defining fields on the ruler may cause unpredictable results.
F15=Subfile Prompt
Press <F15>to Display a prompt on the bottom row of the Work Screen that allows you
to change the subfile line (SFLLIN) and subfile page (SFLPAG) sizes that were in effect
for the current record being defined.
F17=Print
Press <F17> to Print the current contents of the Work Screen.
Adding Fields
To add a user-defined field, type + followed by I (input), O (output), or B (both) for alphabetic
fields, or followed by 3 (input), 6 (output), or 9 (both) for numeric fields and press Enter. To add
a floating point field, add a numeric field followed by E (single-precision) or D (double-
precision) and press Enter. You can use uppercase or lowercase letters. You indicate the length
of a field by the number of characters following +, or by the length specified in brackets after the
first character.
The following examples illustrate user-defined fields:
+BBB or +b(3)
Three-character, alphabetic, both (input and output) field.
+66.66 or +6(4,2)
Four-character, numeric, input field with two decimal positions (set by an edit word).
+3.33E or +3(3,2)e
Single-precision, input, floating-point field with three significant digits and two decimal
positions.
+99.999d or +9(5,3)D
Double-precision, both (input and output), floating-point field with five significant digits
and three decimal positions.
Adding Constants
To add a new constant or change an existing constant:
Type a constant. A blank character ends the constant.
Type constants with single quotation marks to define separate constants for each
character string (word) that is followed by a blank.
Surround a character string with single quotation marks to define a single constant.
Surround several constants with single quotation marks to redefine them as one constant.
Use a double quotation mark to end one constant and start a new constant while taking up
only one position.
To add a MSGCON (MeSsaGe CONstant) field, type + followed by M. To work with a
MSGCON field, type ? in front of the field. When you press Enter, the Define Message
Constant display appears. Press < F12>to return to the Work Screen.
To add system date or time fields, type *DATE or *TIME.
Use the at sign (@) in pairs to delimit a DBCS (Double Byte Character Set) constant.
SDA will replace each pair with a shift in and a shift out pair when you press <Enter>.
You can then type DBCS data between the delimiters. You cannot use a DBCS insert key
on the Work Screen.
The following examples illustrate constant fields:
'xxx"YYY'
Defines two constant fields.
'xxx YYY zzz'
Combines three constant fields into one field.
+MMM or +(M3)
The Define Message Constant display appears.
Adding Fields from a Data Base File
The fields you select from a database file, appear on the bottom row of the Work Screen. You
move fields from the bottom line to your display by typing & followed by the field number, if
you are in multiple mode, and the column heading position and pressing Enter. The fields begin
in the position where you type &. The following examples illustrate moving fields to your
display:
Symbol
Single Field Multiple Field Field
Mode Mode Meaning
& &n Places field. Does not add column heading.
&L &nL Places field. Adds a column heading to the
left of the field.
&R &nR Places field. Adds a column heading to the
right of the field.
&C &nC Places field. Adds a column above the field.
Left-aligns column heading for an alphabetic
field and right-aligns column heading for a
numeric fields.
&P &nP Places the column heading only.
Adding or Removing Attributes and Colors
To add or remove display attributes or colors on the Work Screen, type one of following
commands (in uppercase or lowercase) in the position preceding the field (the attribute byte of
the field):
Command Command
Add Remove Attribute Add Remove Color
H -H High intensity CB -CB Blue
R -R Reverse image CG -CG Green
S -S Column CP -CP Pink
separators
B -B Blink CR -CR Red
N -N Nondisplay CT -CT Turquoise
U -U Underscore CW -CW White
-A Remove all -CA Remove all
attributes colors
You can carry out the above operations by typing * in the position preceding the field (the
attribute byte of the field), pressing < Enter>, and working with the field keyword displays that
appear.
Moving, Copying, and Shifting Fields
Reposition fields on the Work Screen by typing one of the following and pressing <Enter>:
-, =
Type - in the position preceding the field (the attribute byte of the field) and type = where
you want the field to appear.
-, ==
Type - in the position preceding the field (the attribute byte of the field) and type ==
where you want a copy of the field to appear.
-, -, ==
Type - in any position preceding the field, type - in any position after the last field, and
type == where you want a copy of the group of fields to appear.
<<<, >>>
Type <<< in the position preceding the field (the attribute byte of the field), or type >>>
after the field (over the first attribute byte), to shift the field left or right as far as the signs
extend.
Removing Fields
Remove fields from the Work Screen by typing one of the following and pressing <Enter>DO
NOT use the <Delete>key to delete items on the work screen:
Blanks
Type a blank in the position preceding the field (the attribute byte of the field), and over
the entire field.
D
Type D in the position preceding the field (the attribute byte of the field).
Additional Features
Extended field definition
Type * in the position preceding the field (the attribute byte of the field) to add field-level
attributes and keywords.
Display field length and description
Type ? in the position preceding the field to display field length and text or column heading
description on the last row of the Work Screen. You can rename the field by changing the name
on the last row.
Display MSGCON field definition
Type ? in the position preceding the field to show the Define Message Constant display. You can
change the message number, file, and library.
Date and time keywords
Type *DATE or *TIME to define special constants on the display where the system date and
time will be automatically substituted.
Subfile Field Definition
You can define fields for a subfile similar to nonsubfile fields with the following considerations:
You can modify fields on the first record of the subfile. Anything you type is assumed to
be a definition of the first record.
To modify the values of the SFLPAG (number of records on the display) and SFLLIN
(number of spaces between fields), press < F15>to display the subfile prompt line.
<F15>is allowed only for subfile records.
Any field that you define for the subfile will appear the number of times specified by the
SFLPAG keyword.
Compiling And Testing Screens
Once the screen design is complete and <F3>is pressed, PDM returns to the "Design Screens"
menu shown above. Choosing the "6" option on the Design Option line saves the source file for
the screen and compiles it into a screen file which may be used by a program. IF THIS OPTION
IS NOT CHOSEN AFTER THE SCREEN DESIGN IS COMPLETE, THE MODIFICATIONS
WILL NOT BE SAVED. Note that it isn't necessary to save a file after every RECORD created;
Several screens from a single member can be created before compilation. However, the file must
be compiled before exiting SDA. Using the "6" option for a screen produces the following
display:
Save DDS - Create Display File
Type choices, press Enter.
Save generated DDS source . . . . . . . Y Y=Yes
Source file . . . . . . . . . . . . . SRCFILE___ Name
Library . . . . . . . . . . . . . . YOURLIB___ Name, *LIBL ...
Member . . . . . . . . . . . . . . . . SCRNMBR___ F4 for list
Replace existing member . . . . . . . Y Y=Yes
Create display file . . . . . . . . . . Y Y=Yes
(CRTDSPF) F4 for prompt
Display file . . . . . . . . . . . . . SCRNFIL___ Name
Library . . . . . . . . . . . . . . YOURLIB___ Name, *LIBL ...
If create fails, display listing . . . Y Y=Yes
Replace existing file . . . . . . . . Y=Yes
Create file if DDS message severity
(GENLVL) is less than . . . . . . . 20 0, 10, 20, 30
Submit create job in batch . . . . . . . Y Y=Yes
Job description . . . . . . . . . . . QBATCH____ Name
Library . . . . . . . . . . . . . . QGPL______ Name, *LIBL ...
F3=Exit F12=Cancel
These options will compile all the screen records in member SCRNMBR of file SRCFILE in
library YOURLIB to a *FILE object called SCRNFIL in YOURLIB. That file may then be used
by user programs.
It may be advantageous to test screen designs before using them with programs. This can be
accomplished using the "Test Display Files" option from the initial SDA menu. The screen test
program will request the name of a screen and display file (created using the compilation
procedure above,) followed by a prompt screen for values for the output fields. SDA displays the
screen with the values supplied.
Debugging Programs on the AS/400
In addition to the utilities provided for creating, editing, and compiling programs, the AS/400
provides a facility to aid in the debugging of programs as they are running. Called the EPM
(Extended Program Model) debugger, this tool allows the user to view and change the values of
variables and step through the program by using breakpoints which interrupt program execution
and return control to the debugger.
Starting the debugger
Before using the debugger, the source program must be compiled with the *DEBUG and
*SOURCE options. These will, respectively, include debugging information in the executable
program (so the debugger has access to variable and routine names) and produce a source output
listing from the compiler. This source output should be printed before starting the debugger, as
the compiler adds its own line numbers to the source which will be necessary in referencing
specific lines while using the debugger. The source output is also useful as a hardcopy reference
while the program is executing, since the debugger does not list source lines as the program
executes.
To specify these options at compilation time, first prompt on the compile option on the Work
with Members Using PDM display (or on the CRT___PGM command for the language of the
source file) by pressing < F4>(PROMPT) with the "14" (COMPILE) option on the options line
of the file you wish to compile. This will show the initial options screen for the compiler. To
enter the compiler options, it is necessary to prompt for more options by pressing <F10>, which
reveals the following screen:
Create Pascal Program (CRTPASPGM)
Type choices, press Enter.
Program . . . . . . . . . . . . > TEST______ Name
Library . . . . . . . . . . . > YOURLIB___ Name, *CURLIB
Source file . . . . . . . . . . > SRCFILE___ Name
Library . . . . . . . . . . . > YOURLIB___ Name, *LIBL, *CURLIB
Source member . . . . . . . . . > TEST______ Name, *PGM
Text 'description' . . . . . . . *SRCMBRTXT_____________________________
Additional Parameters
Compiler options . . . . . . . . *DEBUG____ *LIST, *NOLIST, *CHECK...
+ for more values *SOURCE___
Language level . . . . . . . . . *EXTENDED__ *EXTENDED, *ANSI83,
*SYSTEM
String temporary threshold . . . 2046____ 256-32767
F3=Exit F4=Prompt F5=Refresh F12=Cancel F13=How to use this display
F24=More keys
The above example is from a Pascal source member. However, other languages will have similar
prompt displays.
Placing the *DEBUG and *SOURCE options on the "Compiler options" lines will cause the
compiler to produce a source listing and place it in the output queue and will include debugging
information in the output program. Pressing <Enter>once all options are entered will submit the
compilation. After the member has been compiled (assuming there are no errors in compilation,)
the source listing should be printed and used with the next steps.
Using the debugger
The process of Debugging essentially consists of four phases:
1. Start the Debugger
2. Add breakpoints
3. Call the program to be debugged and
4. End the Debugger
These phases are discussed in detail below:
Phase 1 (Start the Debugger)
The command to start the debugger is:
===> strdbg YOURLIB/TEST
where TEST is the program in library YOURLIB, that you intend to debug.
Phase 2 (Add Breakpoints)
A Breakpoint is a place in a program where the system stops the processing of that program and
gives control to the display station user or to a specified program. The command ADDBKP is
used to set breakpoints. The simplest form of ADDBKP takes the following form:
===> addbkp stmt(n1 n2 ... n10) where n1, n2 ... n10 are the statement numbers where the
breakpoint is to occur. You may specify 1 to 10 statement numbers where the breakpoint should
occur. For example, ' addbkp stmt(10 20 30) ' will set the breakpoints at statements 10, 20 and
30. The program breaks before processing a statement specified as a breakpoint.
Phase 3 (Calling the Program)
Once the breakpoints are set, the next step is to run the program using the CALL command.
===> call YOURLIB/TEST
You will notice that the program stops execution when the breakpoint is reached. From the
'Display Break Point' screen, you can check the values of the program variables as explained
below:
Press <F10>(command entry) on the 'Display Breakpoint' screen.
This will take you to the command entry screen. Display the program variables with
DSPPGMVAR command:
===> dsppgmvar VARNAME
where VARNAME is the variable name you intend to display.
Using the above command, you can check for as many variables as you want to from the
command entry screen. To exit the command entry press <F3>. Control is transferred
back to the breakpoint.
Press <Enter>to resume execution of the program. The program will stop at the next
breakpoint if any, or will terminate.
Ending the Debugger
Once you are done with debugging, it is very important that you end the Debugger, before you
issue any other command. The command to do it is:
===> enddbg
APPENDIX A - Terminal Setup
PC-VT 9.0 Terminal Setup Instruction
The following should assist you in setting up PC-VT V9.0 for use with the IBM AS/400 via a
port selector connection.
Confirm that your copy of PC-VT is V9.0. This may be confirmed by starting PC-VT and noting
the version number on the initial screen or by entering the setup A screen. Versions prior to V9.0
will not support the cursor keys during an AS/400 session.
1. Start PC-VT and immediately go into the setup by pressing CTRL-F1.
2. Select option 5, 'Go to SETUP B'.
3. You should now change the feature switches, the blocks of 4 characters at the bottom of
the screen, so that they match those given below. This may be done by placing the cursor
above each feature switch you wish to change and pressing the 6 key to toggle the switch
to the correct value. 4. Feature switch settings: 5. 1 2101 2 0X11 3 0000 4 1110 5 0001 6 0110 7 1X10 8 000X 9 XXXX
0 XXXX
6. You should next set the modem speed to 9600. This may be done with menu option 7,
Select Modem Speed.
7. Next set the data bits to 8 and the stop bits to 2. This may be done with menu option P,
Select Data/Parity Bits.
8. Finally, save the changes you have made to the SETUP so that you will not have to repeat
this setup the next time you use PC-VT. This may be done by pressing the S key.
9. You may use the <ESC>key to exit the setup mode and return to the emulator mode from
which you may access the port selector.
APPENDIX B - VT-100 to PS/2 (PC Support) Keyboard
Mapping
PS/2 Key Nam Micro-Term Key Sequence Typical use
<F1> <ESC>1 Help
<F2> <ESC>2 Switch View
<F3> <ESC>3 Exit
<F4> <ESC>4 Prompt
<F5> <ESC>5 Refresh Screen
<F6> <ESC>6
<F7> <ESC>7 Roll Down
<F8> <ESC>8 Roll Up
<F9> <ESC>9 Get Previous Cmd
<F10> <ESC>0 Move to top
<F11> <ESC>- List Toggle
<F12> <ESC>+ Cancel
<F13> <ESC>! or <ESC><SHIFT>1 User support
<F14> <ESC>@ or <ESC><SHIFT>2
<F15> <ESC># or <ESC><SHIFT>3
<F16> <ESC>$ or <ESC><SHIFT>4 Main menu
<F17> <ESC>% or <ESC><SHIFT>5
<F18> <ESC>+ or <ESC><SHIFT>6
<F19> <ESC>& or <ESC><SHIFT>7 Scroll left
<F20> <ESC>* or <ESC><SHIFT>8 Scroll right
<F21> <ESC>( or <ESC><SHIFT>9
<F22> <ESC>) or <ESC><SHIFT>0
<F23> <ESC>_ or <ESC><SHIFT>- Scrl Option
<F24> <ESC>= or <ESC><SHIFT>= Scrl Menu
<DEL> <DEL> Delete character
<Shift><Insert> <CTRL>d Duplicate
<Enter> <RETURN> Send screen
<Backspace> <ESC>i
<Right Ctrl> <LINEFEED> or <CTRL>j Field exit
<Home> <ESC>H
<Insert> <ESC><DEL> Insert mode
<Page up> <ESC>u
<Page down> <ESC>d
<Shift><Pt Scn> <CTRL>p Print Screen
<Tab> <TAB> Next field
<Shift><Tab> <ESC><TAB> Previous field
<ESC> <ESC>a or <CTRL>a Attention
<Alt><F7> <ESC>(grave accent) Ins. Special Char
<ESC><CTRL>w Indicator Toggle
<ESC><CTRL>a Refresh screen
<Left Ctrl> <ESC>r or <CTRL>r Reset term. err.
<Alt><Pt Scn> <ESC>s System Request
APPENDIX C - Using On-line Education (EDU)
Introduction
Online education is a facility provided by IBM to assist the user in learning about the AS/400.
This facility is set up for the user to work through any topic he/she is interested in. This facility is
self-paced so the user can work the modules when it is convenient, using the bookmark utility to
keep track of where the user has left off, so the next time he/she is using education, the system
will automatically return the user to the place where they left off. There is a quiz at the end of
most modules, which gives feedback on how much information the user retained from that
module.
Getting Started
1. From any command line type ==>STREDU <Enter> STREDU is an abbreviation for Start
Education.
2. Select 5, Select course <Enter>
3. There are several courses in online education but the most useful ones in terms of using
the AS/400 are:
o Tutorial Support System
o Facilities and Implementation
o Application Design and Development Tools
Type 1 to select the desired course <Enter>. To display a description about a course
select 8 in front of that particular course.
4. Select 4 to select an audience path for the course <Enter>. You can select all modules or
one of the listed categories. The COMS 175---Command Language audience path is
customized for the CS175 class. Type 1 to select one of them <Enter>.
5. Next, you can either select 1 to start the first module in the selected audience path of the
course or 3 to select any module < Enter>within the selected course.
6. Follow the directions and read each screen carefully.
7. To exit in the middle of a module press <F3> where this option is available. This will
give you a choice of exiting the module, exiting and setting a bookmark, exiting and
marking it complete or go to a topic/subtropic menu for the module.
At the end of most modules, there is a quiz.
This can consist of questions from the module or examples that you walk through, or a
combination of both. For the CS175 class, when you are finished with the quiz, obtain a screen
print of the screen that tells you how many you answered correctly on the first try. If you forget
to get a screen print, you need to go through the quiz again to get to that screen.
To Obtain a Screen Print Press the <SHIFT>and PRINT SCREEN key (towards the upper right
hand corner of your keyboard) at the same time. When the screen has been captured you will see
a message at the bottom of your screen, which tells you that it has been sent to the default printer
device.
Press the <Reset>(at the bottom left hand corner of the keyboard), to clear this message and
continue your session.
Exit online education by pressing a series of <F3>keys until you have reached a command line.
To check your screen print type WRKSPLF (work with your spool files). Your most recent screen
print will be located at the bottom of the list and it will be titled QSYSPRT.
To assign it to a printer, type a 2, change, and press <Enter>. This will change the status from not
assigned to a printer, to assigned to a printer.
At the Printer to use prompt, type the name of the printer you would like to send your printout to
and press <Enter>. To see a list of all started printers, press <F4>on this line. This will give you
a list of all started printers and from here you can select one by typing a 1 on the line before the
desired printer. Press <Enter> to select this printer. You will return to the screen where you
pressed <F4>. Press <Enter>again to accept this printer.
For more information on printing, see the section "Printing Procedure" in this manual.
APPENDIX D - How to program on an AS/400
The following outline details the basic steps of program development on the AS/400. Since there
may be multiple ways to complete a task, some more appropriate than others depending on the
situation, various ways of doing essentially the same thing are shown under each outline heading.
1. Log in.
2. Setup area for source
1. Create a library (optional) - CRTLIB
2. Create a source physical file (optional) - CRTSRCPF
3. Type source into physical file member.
1. Start source entry utility - STRSEU
2. Work in program development manager
STRPDM
WRKLIBPDM
WRKOBJPDM
WRKMBRPDM
3. In PDM: <F6> - create a member.
4. Compile the source member to attain object and compiled. spool file.
o Option 14 from the PDM lines.
o CRT___PGM - where ___ can be CBL, PAS, C, PAS, BAS, etc....
Wait for compilation to complete.
Display message to see if completed successfully - DSPMSG
Check spool file to see if any Fatal errors or warnings.
0. WRKSPLF
1. Choose option 5 - DISPLAY.
2. Page to bottom of file.
3. Note if there are any warnings or errors or fatal errors.
4. If there are errors or fatal errors go to to step III and correct.
5. If there are any warnings determine if they are important and if deemed so go to
step III and correct.
Check for dependencies.
o Does program need data files - if so create or attain them.
o Does program need other programs - if so create or attain.
Execute the program.
o CALL library/programname
o Option 16 from a WRKOBJPDM screen.
If program gives a run-time error.
0. Move cursor to error description - hit <F1> (help)
1. Look for error and statement number.
2. Cross reference statement number with source line number with spool file -
WRKSPLF
3. Correct error.
4. Go to step III.
Log off.