I have been tasked with porting a old Cobol app to C code. I do NOT have access to an IBM S/390 to do any debugging. I do have access to a production system that provides me with the end-results of the algorithm, but none of the sub-step level info I need. I have used the TinyCOBOL (http://tiny-cobol.sourceforge.net/) compiler to compile the original code in a SuSE based server and add debug statements. My C code now produces the exact same results as the TInyCobol version for my 100 test cases. Unfortunately, the original is only agreeing with 90% of these results and I need a 100% agreement. The code is very mathematical and it heavily uses cobol's weird fixed point logic. I need a way to compile the original code with debug statements and run it on a IBM mainfraime. Does anyone know of a resource for doing this. TIA Greg Freemyer