5. FILES › 5.2 Intermediate Files › 5.2.3 Split Data Format

5.2.3 Split Data Format

The split data format is used to produce 80-byte data records
from data which otherwise would not be acceptable to a
spooling environment.  Split data files contain the following
control records:

Header:

    DC F'0' RECORD COUNT
    DC C'MAI1' IDENTIFIER
    DC C'HDR ' RECORD TYPE
    DC F'0' RESERVED
    DC C'x' ORIGINAL RECORD FORMAT, F OR V
    DC C' ' RESERVED
    DC H'n' ORIGINAL LOGICAL RECORD LENGTH
    DC H'n' ORIGINAL PHYSICAL RECORD LENGTH
    DC C'??' JCL DELIMITER CHARACTERS
    DS 50X RESERVED

Trailer:

    DC F'n' RECORD COUNT
    DC C'MAI1' IDENTIFIER
    DC C'TRLR' RECORD TYPE
    DC F'n' VALID BYTES IN LAST DATA RECORD
    DC C'x' ORIGINAL RECORD FORMAT, F OR V
    DC C' ' RESERVED
    DC H'n' ORIGINAL LOGICAL RECORD LENGTH
    DC H'n' ORIGINAL PHYSICAL RECORD LENGTH
    DC C'??' JCL DELIMITER CHARACTERS
    DS 50X RESERVED

 JCL Delimiter trap record:

    DC F'n' RECORD COUNT
    DC C'MAI1' IDENTIFIER
    DC C'DLM ' RECORD TYPE
    DC CL66'** VM DATA XFR PROGRAM DUMMY DELIMITER **'
    DC C'??' JCL DELIMITER CHARACTERS

 Variable data terminator:

    DC H'12,0' RDW
    DC C'MAI1' IDENTIFIER
    DC C'DUMY' RECORD TYPE