IBM System/360 System Programmer's Guide

EXl RDJFCB (INVEN"MASTER),MF=L
EX2 RDJFCB MF=(E,EX1)
EX3 OPEN
(, (RDBACK,LEAVE» ,TYPE=J,MF=(E,EX1)
Programming Notes: Any nurober of data control block addresses and
associated options ~ay be specified in the RDJFCB macro-instruction.
This facility makes it possible to read job file control blocks in
parallel.
An exit list address must be provided in each data control block
specified by an RDJFCB macro-instruction. Each exit list must contain
an active entry that specifiEs the rrain storage address of the area into
which a JFCB is to be placed. A full discussion of the exit list and
its use is contained in Appendix D of the IBM Systero/360 Operating
System: Control Program Services publication. The format of the job
file control block exit list entry is as follows:
r--------------T------------------T------------------------------------,
I Type of Exit I Hexadecimal Code I Contents of Exit List Entry I
I
List Entry I (high-order byte) I (three low-order bytes) I
~--------------+------------------+--------------~---------------------i
I Job file I 07 I Address of a 176-tyte area to be I
I control block I I provided if the RDJFCB or OPEN I
I I I (TYPE=J) macro-instruction is used. I
I I I This area must begin on a full word I
I I I boundary. I
L ______________ L __________________ ~ ____________________________________ J
The main storage area into which the JFCB is read must be at least
176 bytes long.
The data control block may be open or closed when this macro-
instruction is executed.
Cautions: The following errors cause the results indicated:
Error Result
A DD control statement has not been
provided.
A main storage address has not been
provided.
No action
Abnormal termination of task
L- and E-Form Use: The Land E forms of this IT.acro-instruction are
written as described in Appendix B of the IBM System/360 Operating
System: control Program Services publication.
132

IBM System/360 Specifications

General

Brand	IBM
Model	System/360
Category	Desktop
Language	English