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May 29, 2019 in Machine Learning

Q:

TPFDF Macros : Read an LREC  -- DBRED

1 Answer

Jun 25, 2019

The DBRED command reads an LREC From an opened Subfile , The pointer to the LREC is loaded in the specified register coded using the REG= parameter also known as the current LREC , If LREC is not found till end of Subfile READ sets a LREC not found indicator in SW00RTN byte , After reading the LREC Fields in the LREC Can be accessed using DSECT Labels , Subsequent DBRED will start reading from Current LREC.

Mandatory Parameters for DBRED

REF= | FILE=  (or both)

Optional Parameters for DBRED

REG=

ALG= | ORD = | FADDR =

UP|DOWN|NOORG

KEYn(R=,S=|D=|M=,L=,C=.UP|DOWN|NOORG) (n=1..6)

LRECNBR

NOKEY

ERROR | ERRORA

 

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