Other Labels

The following labels are available:

Nonlabel (NL)

NL tapes are handled in basically the same manner as SL tapes, including input and output validity checking and protection. The volume serial number of the NL tape is supplied by the operator through a console response. This external volume serial number is used to locate the proper TMC record, then moved into the appropriate system control blocks. This allows the following:

NL nonspecific output tapes to be cataloged to the system
NL nonspecific output tapes to be used in generation data groups
The external volume serial number to be printed on the SYSMSG listing

Bypass Label Processing (BLP)

BLP processing is the same as NL processing except that CA 1 processes any file sequence as a file sequence of 1 with BLP. The input data set name validity check as described for SL processing is performed. The data set name found in the TMC record for the volume and the DSN specified in the DD statement are used.

Nonstandard Label (NSL)

Complete protection is available for NSL tapes; however, your NSL routines must be modified to interface with CA 1. This interface consists of calling CA 1 at the appropriate locations in the NSL routines and interpreting the resulting return code after CA 1 has performed the appropriate validity checks.