1. BASIC MAPPING SUPPORT

Collection of assembler language macros

Macro An instruction which generates

additional code when passed through

an assembler program.

An interface between the terminal control and

application programs.


3. BASIC MAPPING SUPPORT

Format Independence

The ability to send data to a device without having

to be concerned with the format in which the data

will be displayed

Device Independence

The ability of an application program being

written in such a way that it does not depend on

the physical characteristics of the devices.

4. BASIC MAPPING SUPPORT

CREATION OF MAPS

MAP Representation of one screen format

MAPSET One or a group of maps

With a name up to 7 characters

registered in the PPT
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FIELDS Group of one or more characters

There are two type of Fields

1. Constant fields or Literal fields

2. Variable fields or Data Fields

5. BMS - Map definition Macros

DFHMSD - Defines a Mapset

DFHMDI - Defines a map in a mapset

DFHMDF - Defines a field in a map

6. 
The BMS macro is run through an assembler

program to produce two maps.

Physical Map & Symbolic Map
BASIC MAPPING SUPPORT

7. BASIC MAPPING SUPPORT

MAP GENERATION
Symbolic MapPhysical Map
Design Screen
Code Map
Assembler
-Load Library
- Contains
Literals
- Copy Library
- Contains data
Fields

10. BASIC MAPPING SUPPORT

DFHMSD Macro parameters


TYPE=&SYSPARM | DSECT | MAP | FINAL

L ANG=COBOL|ASM|PLI

MODE=IN | OUT | INOUT

TERM=terminal-type

CTRL=FREEKB | ALARM | FRSET

STORAGE=AUTO,

TIOAPFX=YES | NO

11. BASIC MAPPING SUPPORT

EXPLANATION OF TERMS IN SYNTAX

TYPE

=MAP :Creates a physical map

=DSECT :Creates a Symbolic map

=&SYSPARM : both PM & SM

=FINAL :Indicates the end of map set coding

LANG - Specifies the ProgrammIng language

(ASM,COBOL,PL/I or RPG)


12. BASIC MAPPING SUPPORT

MODE - Indicates the input/output operation

IN :For the input map

OUT :For the output map

INOUT :For the input/output map;

Used for maps involving both

input/output.

TERM - Specifies the type of terminal that can

be used with the map .

=3270 is preferred.

13. BASIC MAPPING SUPPORT

CTRL - Specifies a list of control options in

effect for each map in the map set,like:

FREEKB Free keyboard after each output

ALARM Sound audio alarm during output

FRSET Field Reset

STORAGE - Acquires a separate symbolic map

area for each map in the map set.

= AUTO

14. BASIC MAPPING SUPPORT

TIOAPFX -Generates a 12 byte filler at the

beginning of the symbolic map for control

characters.

= YES

15. BASIC MAPPING SUPPORT

DFHMDI Macro parameter
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SIZE=(lines,columns),
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LINE=line-number ,

COLUMN=Column-number,

CTRL=(control-option...)

16. BASIC MAPPING SUPPORT

EXPLANATION OF TERMS IN SYNTAX

SIZE - Specifies the size of the map in lines and

columns.

=(24,80) is usually coded for a 24*80 screen

LINE - Specifies the starting line number.

= 1 is usually coded.

COLUMN - Specifies the starting column number

= 1 is usually coded.

CTRL - Same as CTRL option for DFHMSD


17. BASIC MAPPING SUPPORT

DFHMDF Macro parameter

POS=(LINE,COLUMN),

INITIAL=' LITERAL'
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LENGTH=FIELD-LENGTH,
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ATTRB=(BRT|NORM|DRK,

PROT|ASKIP|UNPROT,

NUM, IC, FSET),

PICIN = ' PICTURE - STRING '

PICOUT =' PICTURE-STRING '

18. Field Attributes
Field Intensity: NORM / BRT / DRK
Field protection attribute :
PROT / UNPROT / ASKIP
Field Characteristic : NUM
Initial Cursor Positioning : IC
Field Modification Indication : FSET

19. BASIC MAPPING SUPPORT

The Symbolic map contains:

Each data field with FIVE(5) suffixed

Suffixed I, O, A, L, F

The mapname suffixed with I & O

(both present if MODE=INOUT is coded)

For example mapname is ADDM (DFHMDI)

ADDMI for input group & ADDMO for out group
I - Data entered by the terminal operator and

received into the program.

O - Used to hold the output field for operations requiring

the send of a map.

20. BASIC MAPPING SUPPORT

A - one-byte field that contains the attribute

byte used during output procedures to override the

attribute field defined in the BMS map.

L - A half word binary field that contains the

length of data entered by the terminal operator.

F - one-byte flag field

Contains 0 or 1 it indicate where the data field is

modified or not