Help reading a 9 track tape

Chuck Guzis cclist at
Mon Aug 2 20:10:00 CDT 2021

On 8/2/21 5:53 PM, Paul Koning wrote:

> He did say "in the 1960s" so it may have been an early one without the high quality optimizations that grew over time.

FTN was spawned during the 1960s.   Bitsavers has the GIM from 1966:

RUN was sort of a cheap-and-quick compiler.  CDC kept around both, as
FTN compilation time was considerably longer (for obvious reasons).

RUN started out to be the do-everything compiler.  You could stack decks
of FORTRAN and COMPASS in the same job and RUN would invoke the
assembler as needed and invoke the loader load-and-go at the end.   The
JCL for that was simply "RUN."


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