FORTRAN System Monitor

FORTRAN Monitor System is a Operating system resting on the Batch processing.

To use it, it was necessary to write on paper a program (or job ) in FORTRAN or Assembleur, then to code it on perforated cards. An operator undertook to give it to the machine, and the result left on a printer.

A job consisted of the following sequence:

  • a chart $JOB indicating:
    • maximum time, in minutes, to grant to the job ;
    • the account to be output;
    • the name of the programmer;
  • a chart $FORTRAN to charge compiler FORTRAN;
  • the program FORTRAN ;
  • a chart $LOAD to charge the program thus compiled;
  • a chart $RUN to carry out the program;
  • data of the program;
  • a chart $END to put an end to the execution of the program.

FMS turned on the computers IBM 7094; but the model of batch processing was replaced by the following generation of operating systems, to start with CTSS (which was however still compatible with FMS) and the operating systems which followed it: MULTICS , UNIX …

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