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NTVDM.EXE on win 7 32 bit - new build (Emulation)

posted by Zyzzle, 04.07.2020, 00:20

> Yes, this is expected. As you know in 64-bit mode you don't have accessible
> v86 mode. The NTVDMx64 uses softcore CPU emulation same as NT4 for DEC
> Aplha used to run x86 programs. But still by my test the DJGPP compiling is
> ~10x faster than under Dosbox. There is also NTVDMx64 version that can use
> intel HAXM virtualization acceleration but unfortunatelly intel HAXM is
> limited and don't support DPMI programs. Also even with VT-X the graphics
> emulation is still very slow at too many VMEXIT occurs during emulation. So
> it helps for some real-mode text based programs. I didn't try to compile it
> yet, it needs more depencies and I'm not insterested without DPMI
> support...
Thanks for clarification. Yes, I knew that without access to v86 mode -- and using software CPU emulation, things would be glacially slow. But, I also am using this for DPMI support, and it is really much better than the kludgy DOSBOX for my purposes also. Your patch making 128 MB of DMPI memory available is wonderful! It is great to be able to just run "command prompt" now and execute often-used DOS programs without fussing with DOSBox, virtual machines, or other DOS emulators. It is very convenient. Of course, when I want to get down to *real* work, I simply reboot my machine with my bootable memory stick, and bask in the glory of real DOS.

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