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Recommendations for Porting a 16 bit DOS Application (DOSX)

posted by Rugxulo(R) Homepage, Usono, 15.10.2007, 20:00

> I'm not clear as to which approach to take with the DOS extenders. My
> impression is that I should be able to run it in a DOS Box with the
> extender but I'm not sure whether the graphic extensions offered with VESA
> would be available.
> What approach would you recommend? Your insights on this matter is greatly
> appreciated.

So your compiler doesn't support anything besides 16-bit DOS? (Dunno, never used VC 1.52 or any version at all, really.) Try Open Watcom (no cost, open source): it supports any DOS, OS/2, Windows, and partially GNU/Linux. It also comes with a bunch of DOS extenders and has helpfiles included. I'd guess that Causeway probably supports VESA, but I dunno for sure.

Of course, if you ever intend to run on Windows Vista (or similar), DOS full-screen apps won't work at all. In that case, you have to port it to Windows (or run under something like their Virtual PC 2007).

Know your limits.h


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