Hi Ray

More likely the VM is doing something that is slow/not optimized for graphics.

For comparison, I regularly run FreeDOS in QEMU on a 6-year-old Linux
laptop, and it runs great. Including games and testing out programs
(which also includes graphical desktops like SEAL and OpenGEM). Only
one game (a graphical adventure/exploration game, don't remember which
one) was slow.

All of the screenshots from our press kit were made from QEMU running on Linux:
http://www.freedos.org/press-kit/screenshots.html

I use a Cirrus Logic plain VGA card as my graphical display device in
QEMU. My full QEMU configuration (command line) is documented in this
how-to article:
https://opensource.com/article/17/10/run-dos-applications-linux




On Thu, Nov 1, 2018 at 11:15 AM Ray Lopez <r...@well.com> wrote:
>
> I've got an unusual issue that I've been trying to solve for several
> days but have had no luck.
>
> Running FreeDOS in a QEMU-based VM, on a Xen hypervisor (it's actually
> the Qubes OS)
>
> I managed to get it all installed and it runs well except for one
> problem:  Screen refresh is too slow, even with simple graphical
> interfaces like Tandy Deskmate.
>
> After much research I am guessing that the VM is emulating some type of
> hardware that FreeDOS is not optimized for.  And the system I am running
> the VM on does NOT allow me to change the hardware emulation easily.
>
> The frustrating thing is that I faced this exact same problem when I
> tried running Tandy Deskmate in a Linux VM under DOSBox. And then when I
> was poking around, the problem cleared up and screen refreshes were
> super fast!  But for the life of me I have not been able to replicate
> this success on FreeDOS.
>
> I'd be open to any suggestions as I think I've tried every possible
> setting.  Thank you!
>
> RL
>
>
>
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> Freedos-user mailing list
> Freedos-user@lists.sourceforge.net
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