User Exit Reference › USREXIT8 User Exit (TMC Reformat User Exit) (OS TMCs Only) › Definitions

Definitions

A(TMC record for volser requested)

Indicates the address of the 340-byte TMC record. The file TMRECORD COPY on the CA VM:Tape 192 minidisk describes the format of this record. Use it to access various fields in the record.

A(Length of TMC record)

Indicates the address of the length of the TMC record. When the constant is READ, the length of the TMC will be 340. When the constant is WRITE, the length will be equal to the record length of the OS data set defined on the VMTAPE OSTMC configuration record.

This field is not modified by the exit; the value is supplied by CA VM:Tape.

A(Constant ‘READ' or ‘WRITE')

Indicates the address of an 8-byte constant that tells the exit whether the TMC is being read from or written to.

A(Common User Exit Buffer)

Indicates the address of the 256-byte work area to be used for passing information between the various user exits. This work area is specific to each command being processed by CA VM:Tape and cannot be used across commands.