Hi, Ok sorry, got the reply later, and also the opinion I would vote for.
Aitor On Thu, 15 Apr 2021 at 05:13, Jon Brase <jon.br...@gmail.com> wrote: > >Apr 14, 2021 2:00:05 PM Ralf Quint <freedos...@gmail.com>: > > >And I stand by my comments that none of Windows 9x/ME is "running on > DOS". I don't have the time right now to provide the detailed proof for > that, but just look at the addresses of some of the DOS services before the > booting of the Windows 9x GUI and afterwards (in a DOS prompt). They will > be decisively different. You can install a TSR before the booting of > Windows 9x GUI that redirects some of the DOS vectors to produce some debug > output and you will not see that debug output when calling the same DOS > vector while running under Windows 9x. That was also the problem with some > DOS drivers for some SCSI adapters for example, which would not work under > Windows 95, until the manufacturer provided a proper Windows driver for it. > > I will note that Windows 95 *could* use DOS drivers. I/O performance > suffered horribly since DOS drivers weren't thread safe, but there was a > copy of DOS in the system VM for this purpose, even if it had nothing to do > under normal circumstances. +1 For performance reasons, rewritten into VDOS, VREDIR, ... But DOS lies still in every VM and its heart beats there. Aitor
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