Does RSX have the equivalent of the FORTRAN-IV compiler on RT11?  That one is a 
more basic implementation, lower performance but I think also smaller code.  It 
doesn't need an FPP.

        paul

> On Apr 24, 2025, at 2:01 PM, Peter Ekstrom via cctalk <[email protected]> 
> wrote:
> 
> Well darn! I forgot I don't have the KEF11-A chip installed so Fortran
> programs don't run on my 11/23-PLUS.
> I have seen one for sale but it is rather expensive at almost $400.....
> Guess I'll have to keep an eye out.
> 
> I'll give the tapedup code a try on my PiDP-11 instead.
> 
> -Peter
> 
> On Tue, Apr 22, 2025 at 6:26 PM Jon Elson via cctalk <[email protected]>
> wrote:
> 
>> On 4/22/25 12:31, Peter Ekstrom via cctalk wrote:
>>> Hi Jon,
>>> 
>>> Next I am going to attempt to compile your tapedup utility and see how
>> that
>>> goes. I have never written or compiled
>>> anything in Fortran77 before so it will be interesting.
>> 
>> Unfortunately, I didn't see a compile and link command file
>> to link the tapedup program with mtape, and my memories of
>> RSX-11M have been overwritten with VMS stuff.  Hopefully,
>> you can find some docs online for running the link step.
>> 
>> Jon
>> 
>> 

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