AbstractIn designing a POP‐2 compiler for the CDC 6000 series machines, it became apparent that there was a requirement to link to precomiled FORTRAN subprograms in order to use the advantages of FORTRAN and to make use of the extensive liberaries available. This paper describes the design considerations, the principal problems involved and the subsequent implementation of the POP‐2/FORTRAN system. It is concluded that the general design aims were successfully achieved, that is: the system is primarily a POP‐2 system, calls to FORTRAN subprograms have exactly the same syntax as calls to POP‐2 functions and the restrictions on FORTRAN subprograms are minimal. The space overhead of having FORTRAN unused is about 10 p
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