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NTVDM.EXE on win 7 32 bit (Emulation)

posted by Zyzzle, 08.06.2020, 08:48

> If I remember well it's due to new windows driver model for VGA adapters
> that doesn't allow fullscreen VGA/VESA (introduced in Win Vista). It should
> be possible to use some older VGA drivers from XP era for some VGAs in some
> compatability mode that then could run fullscreen but you may not fully
> utilize new features/speed of your VGA in Windows so it's not reccomended.
>
> Use some kind of virtualization if the DOS app is not speed critical and
> need to run still under Windows. E.g. VMWare offers quite good performance
> in VESA modes.
It is still possible, even on Windows 10 32-bit to run NTVDM programs in full screen, BUT one has to disable the current video card drivers, and switch to the default VGA-only adapter, losing all acceleration modes.

It may be possible to run NTVDM via XP drivers with fullscreen VESA support without losing acceleration options, but I've never been able to find XP-compatible drivers for Broadwell Intel chipsets or newer (i7 5000 series or newer). In fact finding ANY i3, i5, or i7 chipset video drivers for XP is a nigh impossible task. I gave up long ago. I'd welcome anyone who can post where to find (releatively) recent XP drivers for gen 5 and up Intel i3s- i7s.

Another option for NTVDM support in *64-bit* Win 10 might be:

https://www.vogons.org/viewtopic.php?t=65472&p=744861

The VOGONS topic seems promising, yet I have not tried that solution, either.

DOSBOX is no solution, it is FAR too slow and kludgy. I can't stand it, and how it is touted as a panacea for "running DOS programs" in Windows. It is absurdly slow.

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