Unfortunately I have no direct experience with the current Fortran compilers (although I've successfully used the Open Watcom C compiler for many years, I suspect their Fortran being 77 only will not suit you - it does successfully compile an old version of Dungeon/Zork that I'd been carrying around since the mid 80s!!) but I believe there is a current Gnu Fortran compiler which has a Windows version. Not wishing to be too contrarian, but you might be better off porting your Fortran environment to a more up-to-date compiler. Good to see another person who appreciates and wants to continue using development tools that do the job, just as good, or better, than the modern development tools. This is designed to run DOS business programs, such as Microsoft Fortran 4.1. If you want to run DOS Business Applications on a modern OS, take a look at vDOS I was able to install Micro Focus Visual Object COBOL in Windows 98, and am able to run it with no problems in the Virtual Machine. My solution was to install Microsoft Virtual PC 2007, and within it, Microsoft Windows 98. The fault is with Microsoft, and not wanting to be backwards compatible.įor example, I am unable to run Micro Focus Visual Object COBOL on my Microsoft Windows Vista system. Far too many problems, but it is not the fault of Take Command. I have tried running Microsoft COBOL 4.5, dBASE IV 2.0, Micro Focus COBOL, etc., in a modern OS. Forget running Visual Fortran 6.0 in Take Command.