On Sat, Nov 20, 2021 at 4:03 PM Jim Hall <[email protected]> wrote:

> [..]
>> Have you tried slowing down your PC? There is a lot of tools that can
>> help with that. Sometimes the binary can be also patched (the TPP patch
>> worked for me on the Jazz Jackrabbit game eons ago).
>
>
> And that was the solution. Running SLOWDOWN /X slows down my PC enough
> that the installer is able to install Wolfenstein 3D. ("/X" is "XT" speed,
> so it's *really* slow. Probably overkill.)
>
> But like the report on BTTR, I can't run Wolfenstein 3D. I've tried a
> number of different combinations: (I am running RC5 on QEMU on Linux)
>
[..]

> The results are the same: the program flips into graphics mode, then sits
> there. It's like it's frozen.
>
> I haven't tried running Wolfenstein in many years, so I can't remember
> when (if?) I ran this before on FreeDOS. But I think I must have, at some
> point.
>


Eric replied to me off-list, but I think it's better to reply as part of
the discussion:


On Sat, Nov 20, 2021 at 4:09 PM Eric Auer <[email protected]> wrote:

>
> hi! if wolfenstein 3d freezes when entering graphics mode
> for all dos driver combinations, maybe the graphics emu of
> qemu is just not compatible? how about dosemu2, bochs,
> virtual pc, vmware, etc.? regards, eric
>


It could be that the graphics are just not compatible with what Wolfenstein
3D is trying to do, so it hangs. My QEMU config uses this command line:

/usr/bin/qemu-system-x86_64 -name FreeDOS -machine
> pc-i440fx-4.2,accel=kvm,usb=off,dump-guest-core=off -enable-kvm -cpu host
> -m 16 -overcommit mem-lock=off -no-user-config -nodefaults -rtc
> base=utc,driftfix=slew -no-hpet -boot menu=on,strict=on -sandbox
> on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny
> -msg timestamp=on -hda $hda -cdrom $cdrom -device sb16 -device adlib
> -soundhw pcspk -vga cirrus -display sdl -usbdevice mouse



I tried changing the -vga option to something else, and tried changing the
-display to gtk. But neither had an impact.

But I recall another game somewhere that had weird graphics artefacts
because of some video tricks the game used. I don't remember the game, but
I remember it was something about the color palette.

Maybe something similar is happening here. I don't have VirtualBox
installed, and I don't have much free time today to debug this. But I know
others use VirtualBox so maybe you can try to reproduce it.


Jim
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