THE SPECIFIC AIM OF THIS PROJECT IS TO DEVELOP TECHNIQUES AND TOOLS TO CONVERT FORTRAN PACKAGES FROM ONE COMPUTER TO ANOTHER AND TO DEVELOP A PROTOTYPE OF SUCH A CONVERTER.

THE SPECIFIC AIM OF THIS PROJECT IS TO DEVELOP TECHNIQUES AND TOOLS TO CONVERT FORTRAN PACKAGES FROM ONE COMPUTER TO ANOTHER AND TO DEVELOP A PROTOTYPE OF SUCH A CONVERTER. THEIMMEDIATE APPLICATION OF THESE TECHNIQUES AND TOOLS IS THE CONVERSION OF THE NATIONAL CANCER INSTITUTE (NCI) DRUG INFORMATION SYSTEM (DIS) SOFTWARE PACKAGE FROM THE EXISTING 36-BIT COMPUTER ENVIRONMENT (DEC-10 SYSTEM) TO THE 32-BIT COMPUTER ENVIRONMENT SUCH AS THE IBM 370 AND DEC/VAX COMPUTERS. AT THE END OF PHASE I, CHEN & CHEN EXPECTS TO DOCUMENT ALL THE SYNTACTIC AND SEMANTIC DIFFERENCES BETWEEN THE FORTRAN COMPILERS ON IBM 370, VAX, AND DEC-10 COMPUTERS.THE IMPACT OF THE WORD SIZE ON THE COMPILER IMPLEMENTATION WILL ALSO BE IDENTIFIED. A PROTOTYPE OF AN AUTOMATIC TRANSLATOR FOR FORTRAN-77 WILL BE DEVELOPED AND USED IN THE CONVERSION OF SELECTED DIS PROGRAMS AND FILES (OR OTHER NIH SYSTEMS). IN PHASE II, THE AUTOMATIC FORTRAN CONVERTER WILLBE FURTHER DEVELOPED AND USED IN THE CONVERSION OF ALL DIS PROGRAMS AND FILES. WE BELIEVE THAT A COMMERCIAL VERSION OFTHE GENERAL AUTOMATIC FORTRAN CONVERTER WILL BE NEEDED BY MANY DATA PROCESSING ORGANIZATIONS AS WELL AS SCIENTIFIC AND RESEARCH ORGANIZATIONS.