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EODAD=relexp
specifies the address of your end-of-data
routine
is
not
available
when
it
is
abnormally terminated.
set
routine.
required,
the
If
this
task
is
DSORG=code
specifies the data set organization as one of the following
codes.
Each code indicates that the format of the device dependent portion
of
the data control block is to be similar to that generated for a
particular access method:
Code
DCB Format for
PS
QSAM or BSAM
PO
BPAM
DA
BDAM
IS
QISAM or BISAM
Note:
For direct-access devices, if you specify either PS
or
PO,
you
must
maintain
the
following fields of the device dependent portion of
the data control block so that the system can
write
a
file
mark
for
output data sets:
• The
track
balance
(TRBAL)
field,
which contains a 2-byte binary
nuwber that indicates the remaining numter of bytes on
the
current
track •
• The
full
disk
address
(FDAD-MBBCCHHR) field, which indicates the
location of the current record.
IOBAD=relexp
specifies the address of an input/output block (lOB).
If a pointer
to the current lOB is not required, you may use this field for
any
purpose.
The
following
parameters
are
not
used
ty
provide cataloging information about the data set.
be used later by access method routines that read
set.
RECFM=code
the EXCP routines but
This information can
or
update
the
data
specifies
the
record format of the data set.
Record format codes
are given in the IBM System/360 Operating System:
Control
Program
Services publication.
BFTEK={SIE}
specifies the buffer technique as either simple or exchange.
BFALN={FID}
specifies the word boundary alignment of each buffer as either full
word or double word.
BUFL=absexp
specifies t.he length in bytes of each tuffer; the maxiwum length is
32,767.
BUFNO=absexp
specifies
the
nurober
of
buffers assigned to the associated data
set; the maximum number is 255.
BUFCB=relexp
specifies the address of a buffer pool
control
block,
i.e.,
the
8-byte field preceding the buffers in a buffer pool.
Execute Channel Program (EXCP) Macro-Instruction
87
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