PPT_TP01_CICS_02

Basic Mapping SupportDay2

2Copyright © 2005, Infosys Technologies Ltd

ER/CORP/CRS/TP01/003 Version No: 1.0

Objectives

• Introduction to BMS– Screen Layout– Physical map and Symbolic map– Map and Mapset

• Creating a simple map– Map definition macros– Modified data tag and other attributes– Handling program attention keys

• Programming to use maps– SEND MAP command– RECEIVE MAP command– Data validation– Changing the attributes dynamically



BMS – Basic Mapping Support

• An interface between CICS programs and the terminal devices

• In BMS, the design and format of the application can be separate from the logic

• BMS finds the device information from the terminal rather than the application program



Formatted Screens• Screens with fields in proper positions with

proper attributes.

• Require Buffer Control Characters (BCCs) to be sent along with data.

• The mixture of BCCs and TEXT is called as Native Mode Data Stream (NMDS) which depends on the protocol of the terminal being used.



SCR1 MAIN MENU DATE: 04/03/98 TIME : 12:14:16

1. EMPLOYEE RECORD MAINTENANCE

2. EMPLOYEE DETAILS BROWSE

3. EXIT

SELECTION : - (1/2/3)

Your Choice PleaseF1 - HelpF1 - Help F3 - ExitF3 - Exit ENTER - ProcessENTER - Process

Formatted Screen - an Example



Physical Maps• Physical map contains the display format for the

map, for a given terminal, available as a load library member.– Length and location

– Attributes

– Constants

– Device characteristics

BMS macro codingBMS macro coding AssemblyAssembly LinkeditLinkedit

Load moduleLoad module LOADLIBLOADLIB To be used by CICSTo be used by CICS



Symbolic Maps• Symbolic map contains all variable data which is

copied into programs working storage section, available as copy library member.

BMS macro codingBMS macro coding AssemblyAssembly Symbolic map generationSymbolic map generation

COPYLIBCOPYLIB Copied (COPY) into CICS appl. programCopied (COPY) into CICS appl. program



MAP & MAPSET

• MAP– is a single screen format

• MAPSET – is a collection of maps link-edited together to create a load module. – should have a PPT entry.

• Naming– 1 to 7 chars of generic name for maps and mapsets– 1 char added by CICS.



BMS Assembly Language Program

• BMS map is a program written in Assembly Language to manage screens.

• The BMS Macros are – DFHMSD (Mapset definition)

– DFHMDI (Map definition)

– DFHMDF (Map Field definition)



DFHMSD Parameters• TYPE=DSECT/MAP/&&SYSPARM/FINAL• MODE=IN/OUT/INOUT• LANG=ASM/COBOL/PL1• STORAGE=AUTO/BASE=name• CTRL=(PRINT,FREEKB,ALARM,FRSET)• TERM=terminal type,SUFFIX=n• TIOAPFX=YES/NO• MAPATTS=(COLOR,HIGHLIGHT,.......)• DSATTS=(COLOR,HIGHLIGHT,.......)

– COLOR=DEFAULT/colour– HIGHLIGHT=OFF/BLINK/REVERSE/UNDERLINE



Example of DFHMSD

DFHMSD TYPE=&&SYSPARM, X CTRL=(FREEKB,FRSET), X

LANG=COBOL, X STORAGE=AUTO, X TIOAPFX=YES, X MODE=INOUT,

X TERM=3270 DFHMSD TYPE=FINAL

END



DFHMDI Parameters• SIZE=(LINE,COLUMN)• LINE=line-number• COLUMN=column-number• JUSTIFY=left/right• CTRL=(PRINT,FREEKB,ALARM,FRSET)• TIOAPFX=YES/NO• MAPATTS=(COLOR,HIGHLIGHT,.......)• DSATTS=(COLOR,HIGHLIGHT,.......)

– COLOR=DEFAULT/colour– HIGHLIGHT=OFF/BLINK/REVERSE/UNDERLINE



Example of DFHMDI

MAPNAME DFHMDI SIZE=(24,80), X

LINE=01, X

COLUMN=01, X

CTRL=(FREEKB,FRSET)



DFHMDF Parameters• POS=(line,column)

• LENGTH=number

• INITIAL=‘text’

• JUSTIFY=(LEFT/RIGHT,BLANK/ZERO)

• ATTRB=(ASKIP/PROT/UNPROT, NUM, BRT/NORM/

DRK, IC, FSET)

• COLOR=DEFAULT/colour

• HIGHLIGHT=OFF/BLINK/REVERSE/UNDERLINE

• PICIN=‘value’

• PICOUT=‘value’

• OCCURS=n



Example of DFHMDF

DFHMDF POS=(01,01), LENGTH=4, X

INITIAL=‘SCR1’, X

ATTRB=(PROT,NORM)

DATEM DFHMDF POS=(01,70), LENGTH=08, X

ATTRB=(PROT,NORM)

DFHMDF POS=(01,79), LENGTH=1, X

ATTRB=ASKIP



MDT - Modified Data Tag

• It is used to know whether the field is modified by the user or not.The field is only receivable if it has been modified.



FORMAT OF SYMBOLIC MAP• A 12-byte TIOA (Terminal Input/Output Area) prefix.

• The mapnames are suffixed with ‘I’ and ‘O’

• When performing INPUT functions fields suffixed with ‘L’, ’F’ and ‘I’ are meaningful

• When performing OUTPUT functions fields suffixed with ‘A’, and ‘O’ are meaningful



Using OCCURS clause

• It is a tedious task to define different field names in a listing which are same and access them.

• To overcome this you use the OCCURS clause in the field and you can address the field by using the subscript.



EXEC CICS SEND EXEC CICS SEND MAP(‘map name’)MAP(‘map name’) [MAPSET(‘mapset name’)][MAPSET(‘mapset name’)] [FROM(data-area)][FROM(data-area)] [LENGTH(data_value)][LENGTH(data_value)] [DATAONLY][DATAONLY] [MAPONLY][MAPONLY] [CURSOR][CURSOR] [ERASE/ERASEAUP][ERASE/ERASEAUP] [FREEKB][FREEKB] [FRSET][FRSET]END-EXECEND-EXEC

SEND MAP



Ex. EXEC CICS SEND Ex. EXEC CICS SEND MAP(‘EMPMAP’)MAP(‘EMPMAP’) MAPSET(‘EMPLIST’)MAPSET(‘EMPLIST’) ERASEERASE FREEKB FREEKB END-EXECEND-EXEC

SEND MAP



EXEC CICS RECEIVE EXEC CICS RECEIVE MAP(‘map name’)MAP(‘map name’) [MAPSET(‘mapset name’)][MAPSET(‘mapset name’)] [INTO(data-area)][INTO(data-area)] [FROM(data-area)][FROM(data-area)] [LENGTH(data_value)][LENGTH(data_value)]END-EXECEND-EXEC

RECEIVE MAP



Ex. EXEC CICS RECEIVE Ex. EXEC CICS RECEIVE MAP(‘EMPMAP’)MAP(‘EMPMAP’) MAPSET(‘EMPLIST’)]MAPSET(‘EMPLIST’)] END-EXECEND-EXEC

RECEIVE MAP



Validate Fields

• Fields can be evaluated using the L, F or the I sub-fields

• The key pressed by the user is evaluated by using EIBAID

• CICS provides you with a pre-coded set which holds the symbolic values of attention identifier– COPY DFHAID (DFHENTER, DFHCLEAR, DFHPF1 etc)



Dynamic Cursor positioning.

• Move -1 to the symbolic map variable suffixed with L.

• Send the map with a CURSOR option in SEND MAP.



Dynamically changing attributes.• COPY DFHATTR in your program.

• Choose the attribute from the list you want to use and move it to the symbolic field variable suffixed with ‘A’.

• You can also do it by copying DFHBMSCA having different options.



DFHBMSCA attribute values

Variable Protection Intensity Modified Data Tag (FSET/FRSET) DFHBMUNP Unprotected Normal Off DFHBMUNN Numeric Normal Off DFHBMPRO Protected Normal Off DFHBMASK Autoskip Normal Off DFHBMBRY Unprotected Bright Off DFHPROTI Protected Bright Off DFHBMASB Autoskip Bright Off DFHBMDAR Unprotected Non-display Off DFHPROTN Protected Non-display Off DFHBMFSE Unprotected Normal On DFHUNNUM Numeric Normal On DFHBMPRF Protected Normal On DFHBMASF Autoskip Normal On DFHUNIMD Unprotected Bright On DFHUNINT Numeric Bright On DFHUNNOD Unprotected Non-display On DFHUNNON Numeric Non-display On



Step 1: Open a tso session.Step 2: Create a new PDS.Step 3: Code the following mapset in a new member.

Sample mapset Development



Step 4: Assemble the mapset using the clist TRNGBMS.

Step 5: Open a CICS Session.

Step 6: Install the program using the command

CEMT SET PROG(mapset-name) NEW

Sample mapset Development



Step1: Open Client session for Mainframe, type CICS3 and hit ENTER key. Enter your User id and Password and press the Enter Key.

Execution of the sample mapset



Step 2: Type the command

CECI SEND MAP(map-name) MAPSET(mapset-name) ERASE FREEKB

Execution of the sample mapset



Summary• What is a BMS?

• What are the two kinds of maps? Why do we need them?

• What are the macros used to define?

• What is MDT, FSET and FRSET?

• What are the symbolic map fields generated?

• How to detect the key pressed?

• How to dynamically change the attributes of the fields?

• Sample Mapset development



Thank You!

PPT_TP01_CICS_02

Documents

map mapset map

symbolic map map

infosys technologies

symbolic maps symbolic

physical maps physical

bms screen layout physical

map command data validation

bms macros