06.03.04

The text read off it

[06.03.04]

Subroutine control cards must occur in the correct position in the modification deck and in the proper order. The subroutine deck which follows an *INSERT or *REPLACE control card must be a complete CT Relative binary deck, preceded by a *CTEXT card followed by a *CTEND card.

A scratch tape may be required for subroutine modification and SYSUT3 is used for this purpose. (Not currently required).

When the last subroutine modification has been processed, the library tape is positioned beyond the file mark which terminates the old subroutine file.

Updating Procedure

The following procedure is used in preparing a new system tape:

1. Prepare the input as described. A typical sequence might be:

   1                7                 16
   
   $DATE                      mmddyy                any number of unit reassignments
   $ATTACH                    unit                  if and as needed by installation
   $AS                        function.name
   $EXECUTE                   CT
   $SUBUP
       subroutine decks
   

   This updates the subroutine files and puts them on SYSUT2. They are placed on the new system tape by the following sequence:

   $IBSYS
   $IBEDT
            *EDIT      options
            *AFTER     LOAD
            *DUP       SYSUT2, SYSUT1, 2
   
   end-of-file card
   
   $IBSYS
   

   The control cards must be so ordered that their record name references are in the same sequence as the records on the tape. If a record is referenced out of sequence in the update deck, a message will be printed, and its effect will be nullified.

2. Load and set tape units in accordance with the standart (or altered) settings of the SYStem units table.

3. Follow Basic Monitor operating instructions. Refer to the manual, IBM 7090 Operating Systems: Basic Monitor (IBSYS) Form J28-8086-0.