On 10/18/2024 8:07 AM, Mateusz Viste via Freedos-user wrote:
I am *not* planning to transform a RPi into a standalone "DOS computer
that talks". That was Eric's idea. A perfectly valid idea with
possible practical applications, but outside of my specific interest.
Won't work. Dos itself uses a *lot* of interrupt calls to do things.
The raspberry pies run processors that don't support interrupts.
Therefore, porting a stand-alone version of dos to the pie just won't work.
Of course, using linux and virtual emulation to make a dos subsystem can
work, and that's how dosemu works (well, now there's dosemu2, which I
can't get to work), but again, those use emulation. I'm still looking
for an inexpensive X86 type SBC that can be used to build a dos only
machine. That would be awesome, but inexpensive doesn't seem to be a
buzzword when it comes to x86 compatible single board computers, which
is a real shame, there's so much legacy software out there that could
benefit from such a system, I'm honestly extremely surprised such a
system does not currently exist.
I've seen do it yourself forums where folks have built such machines,
and one of them is still pretty active, but you need to send the board
design to a company to do the building for you, since circuit boards are
involved, and several surface mount chips are needed. It does work
though, and perhaps I'll be able to get into the queue at some point,
and have some of those built, then I can implement any number of dos
projects, but that's probably 2 years or more away for me.
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