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SAVE command

The SAVE command stores a copy of memory in an executable file.


Format

@SAVE (ON FILE) filespec  (PAGES FROM) loc1 (TO) loc2, loc3 loc4, ...

     where:

     filespec     is the file specification under which  you  want  to
                  store the program.
                       Default filespec - program name.EXE

     loc1 loc2,   are pairs  of octal numbers  or symbolic expressions
     loc3 loc4,   that specify the span(s) of memory pages you want to
     ...          save.
                       Default  loc1  loc2 - all  assigned  pages   of
                                       memory  from  0  to the highest
                                       page  number  of  the   highest
                                       existing section


Output

     Status of Files

          If you use recognition of the file specification, the system
          prints !Old Generation!, !New Generation!, or !New File!, to
          indicate its status on disk, or !OK!  if saved on a non-disk
          device.


Hints

     Saving Programs Before Running Them

          When you load a source or  object  program  using  the  LOAD
          command, save it using SAVE before running it.  Then you can
          run it in the future using RUN,  without  first  loading  it
          using  a  LOAD-class command.  This is also true if you save
          the program after running it, but  it  will  then  be  in  a
          post-run state.

     More Information

          For more information about  saved  files,  see  the  TOPS-20
          Monitor Calls Reference Manual.

Restriction

     Saving an Execute-only Compiler

          It is illegal to use the SAVE command after using  the  LOAD
          command  for an execute-only compiler.  An alternative is to
          use LINK with the LOAD command and the /SAVE switch.


Related Commands

     GET       for putting a saved file into memory

     LOAD      for putting a source or object file into memory

     RUN       for running a saved program

     START     for starting the program in memory


Examples

     1.  Save the program currently in memory.

         @SAVE
          TESTF1.EXE.6 Saved

     2.  Mount a magnetic tape in write-enabled  mode.   Use  the  GET
         command  to  put an executable program into memory, then save
         it (specifying a new filename) on tape and on disk.  Finally,
         start the program, which is still in memory.

         @MOUNT TAPE LAT:/WRITE-ENABLED
         [Mount request LAT: queued, request-ID 415]
         [Tape set LAT, volume LAT mounted]
         [LAT: defined as MT2:]
         @GET TESTF1
         @SAVE LAT:TAP.EXE
          MT2:TAP.EXE Saved
         @SAVE
          TAP.EXE.1 Saved
         @START

         THIS IS A TEST.

         CPU time: 0.04  Elapsed time: 0.17