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in Machine Learning by
Q:
purpose of DBIFB command?

1 Answer

0 votes
by
This command macro is used to check if a subfile is open and if opened returns the SW00SR slot base address

Mandatory Parameters for DBIFB

REF= (Refname|Label|A/label|FIRST|NEXT)

FIRST : Gets the SW00SR slot address in R3 of the first opened subfile

NEXT : Subfile opened next to the current subfile

Both FIRST and NEXT return with R14 pointing to 8-Byte location of the REF name

Optional Parameters for DBIFB

ERROR|ERRORA

NEWREF

NEWREF : Allows to change Refname if located

REG=

EXAMPLE:

DBIFB REF=WRMBSQ

#IF (R3,NZ)

    DBCLS REF=WRMBSQ

#EIF

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