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.