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Porting Fortran application to OpenVMS Alpha?

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The Question is:

My company has an old MicroVax 4000 running on VMS 5.5-2 which has far passed
 its economical life.  Needless to say, we are trying to replace the unit with
 the lastest Alpha, hoping minimal porting of old, very old fortran codes
 (compiled with Fortran v6.
1-68) which has been run on old VAX 4000.  I've been hearing that old binaries
 which was complied in old VMS will run flowlessly in new OpenVMS.  I'd like to
 know how true that statement is.

The Answer is :

  If you have the Fortran source code available, a direct source-level
  port over would be the approach recommended by the OpenVMS Wizard.
  While some old OpenVMS VAX binaries can often be translated via a
  package known as DECmigrate, the OpenVMS Wizard does not generally
  recommend this approach -- for various reasons.

answer written or last revised on ( 13-NOV-2000 )

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