I also successfully use KERMIT, TCP and packet driver what give me the way to 
transfer between Unix (C-Kermit), and DOS (on real hardware and under Virtual 
Box, using MS-DOS KERMIT).

Piotr

Sent from PDP-11

> Wiadomość napisana przez Frantisek Rysanek via Freedos-user 
> <freedos-user@lists.sourceforge.net> w dniu 17.08.2024, o godz. 10:38:
> 
> On 17 Aug 2024 at 9:36, Eric Auer via Freedos-user wrote:
>> 
>> Hi Frank,
>> 
>>> I kind of second that :-)
>>> 
>>> DOSEMU has traditionally been "special".
>>> Different from e.g. QEMU in that DOSEMU was a relatively thin
>>> emulation layer. Not emulating what needed not be emulated.
>> 
>> Note that current versions do emulate everything, even
>> including the CPU, given how hardware has become less
>> suitable for DOS over time.
>> 
> Hello Eric :-)
> 
> thanks for your informed and deep addendum.
> I don't get to learn this stuff so neatly packed from just the docs.
> 
>> I would NOT give either a raw actual block device. Sure,
>> you could technically say the device can be used instead
>> of a disk image, but you would have to tell Linux about
>> the risk of competing access, which is a problem avoided
>> by using dedicated disk IMAGES. The feature of letting a
>> directory appear as a drive is very convenient in that
>> sense, because competing access is no problem, plus you
>> immediately see changes from Linux in DOS and vice versa.
>> 
> Absolutely, I agree with all your points.
> Note that "what's useful" depends on your particular task/assignment.
> 
> Ages ago, I had a use case of some sort, where I needed the disk
> (block device) to be physically removable, and to have the DOS
> FDISK.EXE to be able to partition the drive etc.
> I don't recall all the details anymore... I know that it was useful
> to have a CF card in a USB reader (rather than straight on an IDE
> channel), visible to some low-level HDD tools running in DOSEMU, to
> do their thing = produce a CF card able to boot DOS on bare metal,
> under a picky old BIOS that used to make a fuss about CHS vs. LBA
> etc. geometry. I couldn't seem to persuade Linux native tools to do
> what I needed back then. Using Linux and DOSemu meant that I didn't
> have to reboot the machine doing the "CompactFlash preloads"
> inbetween swapping the cards in the reader, and I didn't have to rely
> on the CF cards having the same geometry (which at the time was a
> stumbling block).
> 
> I don't recall what the actual application scenario was... must've
> been like 2 decades ago. This conversation thread has just tickled my
> old memories of antics (unfug) like these being possible and
> marginally useful back then :-)
> 
> Frank
> 
> 
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