Data Map For /Noalignment; Data Map For /Alignment, -Align - Compaq COBOL AAQ2G1FTK User Manual

16.4 Using Alignment Directives, Qualifiers, and Flags
Example 16–4 Data Map for /NOALIGNMENT
Data Names in Declared Order
Line Level Name
----- ----- -------- ------------- ---- ----- -------
7 01 REC1
8 02 FLD1
9 03 FLD1-1
10 03 FLD1-2
11 02 FLD2
12 02 FLD3
13 03 FLD3-1
14 03 FLD3-2
15 03 FLD3-3
Byte Layout for Example 16–4:
|REC1
|FLD1
|FLD1-1 |FLD1-2
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1 5
Begin byte number (starting with 0)
Record length is 26 bytes.
The asterisk (*) designates FLD3-1. Also, no padding or filler will result,
just as with Compaq COBOL for OpenVMS VAX on OpenVMS VAX.
Example 16–5 Data Map for /ALIGNMENT, -align
Line Level Name Location
----- ----- ------ ----------- ----- ---- ------ --------
7 01 REC1 2 00000000
8 02 FLD1 2 00000000
9 03 FLD1-1 2 00000000
10 03 FLD1-2 2 00000004
11 02 FLD2 2 0000000B
12 02 FLD3 2 00000010
13 03 FLD3-1 2 00000010
14 03 FLD3-2 2 00000014
15 03 FLD3-3 2 00000018
Managing Memory and Data Access
Source Listing
Location Size Bytes Usage
2 00000000 26
2 00000000 11
2 00000000 9
2 00000004 7
2 0000000B 5
2 00000010 10
2 00000010 1
2 00000011 9
2 00000015 5
|FLD2 |FLD3
| |*|FLD3-2 |FLD3-3
| | | |
12 17 22
18
Note
Source Listing
Data Names in Declared Order
Size Bytes Usage
29 29
11 11
9 4
7 7
5 5
13 13
1 1
9 4
5 5
Managing Memory and Data Access 16–11
Category
--------
26 DISPLAY Group
11 DISPLAY Group
4 COMP N
7 DISPLAY N
5 DISPLAY AN
10 DISPLAY Group
1 DISPLAY AN
4 COMP N
5 DISPLAY N
|
|
|
|
Category
DISPLAY Group
DISPLAY Group
COMP N
DISPLAY N
DISPLAY AN
DISPLAY Group
DISPLAY AN
COMP N
DISPLAY N