Re: Anyone for help with DEC (Vax) Fortran-IV ?


"Steve Lionel" <Steve.Lionel@xxxxxxxxxxxxxxxxx> wrote in message
news:W4USf.14143$S25.10823@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Jim wrote:

VMS Fortran was always F77. It should need no conversion unless you
intend
to remove the VMS extensions.

Not ALWAYS. Version 1 of VAX-11 FORTRAN-IV-PLUS was "almost but not
quite" F77. I implemented the necessary run-time support (primarily
INQUIRE, but also a few other things) for 1980's version 2, which was
renamed VAX-11 FORTRAN, which then qualified as full F77. (That's also
when the compiler was changed to be a native VAX implementation instead
of being PDP-11 code running under RSX emulation.)

Steve
Sorry, I missed V1. At that time I was working with Fortran IV on RT-11.

As for the printed copies, you need to understand that VAX Fortran allowed a
Tab character at the start of a line to move the carriage to position 7
which is where the source code should start. When printed, you cannot tell
that the Tab replaced several blanks. Hence what looks like a line of more
than 72 characters may not have been that long.

Furthermore, if the latest VMS Fortran compiler rejects your code, then your
code is not what you think it is. Goodness knows, I have ported lots and
lots and lots of F77 code from the VAX to the Alpha with no problems.

Jim


.

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