BIOS interrupt 21h under Vista

[thearchitect]

Hi everybody,
i have a problem about running BIOS interrupt under Vista command prompt. The program just for printing a string on screen is compiling without problem but when i run the executable i get exception and program halts.

I am using Visual Studio Express 2008 C++.

Any help is welcome, thank you...

[thearchitect]

thats ok,
i got the answer at http://www.kipirvine.com/asm/gettingStarted/index.htm#16-bit

[sinsi]

Hasn't Vista lost DOS and win16 support? Or is it just the 64-bit version (and XP64)?

[Neil]

Hasn't Vista lost DOS and win16 support? Or is it just the 64-bit version (and XP64)?

Yes, I thought that. I've just tried a couple of my old DOS programs & they run without any problems (Vista 32-bit edition)

[sinsi]

Yeah, 64-bit windows can't run in V86 mode because of the processor being in long mode, so bye-bye DOS. Oh well, about time I guess (and there's always VirtualPC).