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CONVERSION FROM CDC SIMULA TO DEC SYSTEM-10 SIMULA
WHAT CDCSIM DOES
The program CDCSIM can be used to perform the following conversion
> Change characters from the CDC to the ASCII character set.
> Change certain SIMULA words which are differently spelled on CDC
and DEC (e.g. "POWER" to "**", ".," to ";").
> Find CDC identifiers longer than 12 characters, which are different
but equal in their first 12 characters, and rename a few characters
in one of them since only the first 12 characters are significant on
> Rename identifiers which are reserved words on DEC but not on CDC
(e.g. ELSE or THEN).
> Remove the "@" characters surrounding operator words on CDC.
> Remove blanks inside identifiers.
WHAT IS NOT DONE BY THE CDCSIM PROGRAM
Here is an incomplete list of things not done by the CDCSIM program:
> Conversion of TEXT and CHARACTER constants.
> Conversion of COMMENTS.
> Conversion of the format of declarations of external FORTRAN and
> Conversion because RANK and CHAR work differently with the CDC and
the ASCII character codes.
PROBLEMS WHICH MAY OCCUR
You may have trouble with multi-line text constants in some special
Since the conversion of the CDCSIM program from IBM to DEC SIMULA, it
has only been tested on one very large CDC program, which program
however was converted correctly. CDCSIM has however been tested
very thoroughly on many IBM SIMULA installations before conversion to
HOW TO USE THE CDCSIM PROGRAM
Just run the program and answer the questions put to you. The
program will ask for: > File name for input CDC program and output
DEC program. > If you want to list the output program on the TTY.
> If you want the program to modify long identifiers to avoid name
clashes. > If you want to modify the first 8 characters of any
clashing identifiers by manual intervention.
The program will use default values for all input parameters except
the file name of the CDC program. Help is available by answering ?
to the questions given by the program.
If you modify long identifiers, then the program will produce a
temporary file TEMP.TMP.
The program also has a facility to convert from UNIVAC to IBM SIMULA,
but this facility has not been tested on DEC. The facility is
triggered by a line "%CON" in the input file.
CDCSIM was originally produced by the Norwegian Computing Center for
converting UNIVAC and CDC SIMULA programs to IBM. We are very
grateful for their permission to modify it for CDC to DEC conversion.
WHERE TO GET IT
CDCSIM is available on the SIMULA distribution tape.
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