Parameter Description for PUNCHDEF

CCWNUM=nnn

Specifies the maximum number (1-235) of double words to be used for channel program area for local punches.

Use the following formula to determine this parameter's recommended value:

CCWNUM = (BUFSIZE= parameter on SPOOLDEF statement)/average card length

Estimate the average card length to allow for JES2's truncation of trailing blanks.

Note: If a 3525 is interpreting (FUNC=I on the DD card), the CCWNUM must be at least 2.

Default: BUFSIZE parameter on the SPOOLDEF statement / 80.

Modification: Single-member warm start.

DBLBUFR=Yes|No

Specifies whether (Yes) or not (No) double buffering is used for local card punches.

Modification: Single-member warm start.

RDBLBUFR=Yes|No

Specifies whether double buffering (Yes) or single buffering (No) is to be used for remote card punches.

Note: The specification refers to JES2 regular I/O buffers, not to JES2 teleprocessing buffers.

Modification: Single-member warm start.