Control Data 3170 Installation Handbook page 85

2.3.48 NOISE RECORD LENGTH OPTION (NSTDNL)
Definition: The NSTDNL option determines the minimum length of acceptable data
records on magnetic tape. Records smaller than the equated size are discarded as
noise records.
Option:
NSTDNL EQU
NSTDNL EQU
o
n
Standard noise recovery (18 characters) is used as
a default
1 < n < 63; minimum acceptable data record
if
other than standard size.
Dependency: If NSTDNL
t=
0, system noise records are not written on magnetic tape.
Release value: NSTDNL equals 0 on the MSOS COSY tape and the MSOS binary source
tape; it need not be changed.
Decks and COSY numbers:
JOBCTLI0
DELETE/
DECK/
3
pl,p2
2.3.49 OCC AND SNAP CARD OPTION (OCCSNAP)
Definition: The OCCSNAP option specifies whether octal correction cards and snapshot
dump cards are processed.
Option:
OCCSNAP
OCCSNAP
EQU
EQU
Dependency: None
o
1
No OCC or SNAP cards are processed
OCC and SNAP cards are processed
Release value: OCCSNAP equals 1 on the MSOS COSY tape and the MSOS binary source
tape.
Decks and COSY numbers:
LOADER
DELETE/
DECK/
3
pl,p2
2.3.50 OPERATOR CONTROL OPTION (OPCTL)
Definition: The OPCTL option specifies whether the operator can enter job control
statements or is limited to reass igning system units.
Option:
OPCTL
OPCTL
II-2-40
EQU
EQU
o
1
Operator may only reassign system units
Operator may enter job control statements and
reass ign system units
60410800 A