ADATA record layouts

The formats of the records written to the associated data file are shown in the sections that follow.

In the fields described in each of the record types, a notation based on the assembler language data type is used:

C
indicates EBCDIC data
H
indicates 2-byte binary integer data
F
indicates 4-byte binary integer data
A
indicates 4-byte binary address data
X
indicates hexadecimal (bit) data

No boundary alignments are implied by any data type, and you can change the implied lengths by using a length indicator (Ln). All integer data is in System/370 format; that is bit 0 is always the most significant bit, bit n is the least significant bit, and the byte ordering in the records is from most significant to the least significant. The bits within a byte are numbered from left to right starting from 0.

Offsets within each record are calculated from the beginning of the header section.


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