Hello, On Wed, 17 Aug 2022 at 12:00, Liam Proven <lpro...@gmail.com> wrote:
> On Wed, 17 Aug 2022 at 01:34, Wengier W via Freedos-user > <freedos-user@lists.sourceforge.net> wrote: > > > > The apparent problems are the compatibility and quality. There are huge > differences between Windows 9x's MS-DOS prompt and (32-bit) Windows XP's > NTVDM. > > Well, yes. The Win9x DOS prompt is real DOS running on a real DOS > kernel which can access hardware. > Not actually. It may access the VxD virtual devices that do the real hardware access in 32-bit, and are able to coordinate "multiple DOSes" acceeding the same hardware (including "Windows", that is running in DOS VM0). > The 32-bit WinNT one can't: it's a sort of VM, containing a DOS emulator. > > The reason the NT one isn't very good is the reason that NT was a > successful product: because it isolates apps from the hardware, making > it more reliable and allowing SMP and things. > Actually translating BIOS and DOS calls to an OS that is not on the DOS line, therefore doing not as good as VMM32.VXD (aka DOS386.EXE in previous versions) and all its VxDs did in Windows 9X. > Win64 drops 16-bit support. DOS is a 16-bit OS. It went along with > 16-bit Windows support, no more and no less. > I think this is more realistically the real problem (not the graphics). After all, we could still manage with DOS in a box, even if you can't switch to full screen. Aitor
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