Converting DG Nova FORTRAN-66 to F77 under Unix

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1 total messages Started by David A. Hoppell Sat, 29 Mar 1986 19:37

#345

Author: David A. Hoppell
Date: Sat, 29 Mar 1986 19:37

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I am preparing to port a rather large FORTRAN-66 program running under
Xebec's xdos on a Data General Nova over to f77 under U??X.  I was
wondering if anyone has any experience in Xebec's xdos and/or porting
software from it???  The differences in i/o are giving us the hardest
time (i.e. xdos can open the same file for sequential access and
direct access, etc.).  Are there any tools available to help in
the conversion??  We have a lex script that makes most syntax
changes. Our approach to the conversion to touch as little of the
existing code, but to write a layer of software underneath the
application that emulates all the xdos system calls.  This is
especially tricky when it comes to i/o because it means writing
your own runtime library.  We have had good success emulating the
xdos overlay mechanism using setjmp/longjmp.  Anybody done something
like this before??

{ihnp4 , decvax}!dartvax!hoppell

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