IBM Libraries With Basic Tape Library Support (BTLS)

1. Specify BTLS as one of the values for the RBTTYPE parameter in CTTPARM (through Control-M/Tape step 2.10 in ICE).
2. Edit the CTTBTLS member in the IOA SAMPEXIT library and make the following changes:
   1. Assign one of the BTLS library units to the BTLSUNIT parameter:

      BTLSUNIT EQU   C’123’   <=== DEFINE AUTOMATED TAPE LIBRARY UNIT ADDRESS

   2. If you are using 4-digit device addresses, change the value specified for the BTLSDIGS parameter from 3 to 4 using the following statement:

      BTLSDIGS EQU 4 <=== NUM OF DIGITS IN UNIT ADDR (3/4)

   Example

   If 1AB2 is the address of one of your automated tape library units, the parameters section should include the following statements:

   BTLSUNIT EQU   C'1AB2'   <=== DEFINE AUTOMATED TAPE LIBRARY UNIT ADDRESS

   BTLSDIGS EQU   4         <=== NUM OF DIGITS IN UNIT ADDRESS (3/4)

3. Use the ICE Automatic Exit Installation Tool (described in the exits chapter of the INCONTROL for z/OS Administrator Guide) to compile the CTTBTLS member. The CTTBTLS member contains the code necessary for interfacing with the IBM automated tape library.
4. Add BTLSIN and BTLSOUT DD statements to the CTTRBM step in the procedures for the CTTVTM and CTTRTM utilities.
   • The BTLSIN DD statement must point to a temporary file.
   • The BTLSOUT DD statement must point to a SYSOUT file.

   Example

   If SYSDA is used as a temporary DASD unit, and BTLS messages should be printed to the default MSGCLASS SYSOUT class, the above mentioned DD statements should be as follows:

   //BTLSIN   DD  UNIT=SYSDA,SPACE=(TRK,1)

   //BTLSOUT  DD  SYSOUT=*

5. Add the BTLSIN and BTLSOUT DD statements (described above) to the IOA functional Monitor procedure.
6. Add the BTLSIN and BTLSOUT DD statements (described above) to your CTTMUP procedure to ensure support for functions VOLSCR and GRPSCR of the CTTMUP utility.