You need to try it on a real DOS machine before you can pin the problem on DOSBox.

It runs really well and fast in real DOS machine, but always die in Dosbox.
Really strange. I can't why it is.

Hmm.

Maybe experiment with different memory managers on your real machine to see if you can replicate the problem there. That might help you narrow it down.

This is only about Dosbox, I've already tested in several real machines. Now I'm going to use Dosbox Debugger, but I'm not sure if it will help me.

null

Anders- wrote on 2021-07-16, 17:31:

Nikita Afanasev wrote on 2021-07-16, 17:26:

This is only about Dosbox, I've already tested in several real machines. Now I'm going to use Dosbox Debugger, but I'm not sure if it will help me.

Does it also crash when running a "real" DOS inside dosbox?

I have tested it using FreeDOS in real machine. But DOSbox uses MS-DOS. Isn't this difference?

null

Yes, you can boot a diskimage inside Dosbox to run real Dos instead of Dosbox' emulated one. In layman's term 😉

DOSBox does not use MS-DOS. It emulates a DOS environment with its own system.

Try testing it with MS-DOS in a real machine though and see what happens.

Thanks for your advice!
I really want to test in real DOS all the time, but it is really uncomfortable to reboot my PC whenever I need to test.
Could you please teach me how to boot DOS image in DOSbox?

Install DOS in DOSBox

Can I install FreeDos or MS-DOS on my local hard drive?
Now I'm using USB disk to boot Dos, but I want to boot directly like my Windows.

Ideally you want a real DOS machine, not just booting your modern computer with DOS.

You can boot MS-DOS from a USB drive.

If your computer is set up with UEFI boot only rather than legacy boot enabled, you cannot boot MS-DOS from your local drive.

Another testing option that will come closer to authentic hardware than DOSBox is full PC emulators like PCem or QEMU.

Then how about FreeDOS?
I think latest FreeDos can be installed on local drive. I tried to install it, but it required to reset all my partitions first.
I will be very happy if you kindly teach me.

I tried with both PCem and QEMU, but emulator is emulator.

Yeah you would need to restructure your partitions and it may not even work that way.

Again, this is kind of moot if you aren't using an authentic DOS computer... it might be a speed-related issue; who knows.

I do not recommend trying to install DOS on your local drive if you don't already know how to do it, as it involves operations that if done incorrectly will destroy all your data.

FreeDOS has some major issues with certain hardware that makes it pretty much useless for a retro gaming machine.

Some sound cards will not work with it and there are other issues as well.

cyclone3d wrote on 2021-07-16, 20:44:

FreeDOS has some major issues with certain hardware that makes it pretty much useless for a retro gaming machine.

Some sound cards will not work with it and there are other issues as well.

I keep hearing that. But if all the hardware works fine in it shood it not be a viable option for folk in stead of the lagacy Doss' which don't have Fat32 support out of the box?

What saying here it is another option to consider as well legacy Doss' d, the likes of DosBox and any other emulators? Another tool in the tool box so to speak.

And shouldn't we be compiling a list of hardware that has actually been proven not to work in FreeDos? Broad states like "FreeDos doesn't support all hardware". A statement like "hardware XXXX does not play nice or work in FreeDos"

Just my toughts.

Yeah, it would be nice to have a list of what FreeDOS has issues with. I just see random issues pop up on the forums here and the issues magically go away when they switch from FreeDOS to MS-DOS.

cyclone3d wrote on 2021-07-16, 21:42:

Yeah, it would be nice to have a list of what FreeDOS has issues with. I just see random issues pop up on the forums here and the issues magically go away when they switch from FreeDOS to MS-DOS.

I've just created a thead for. So anyone here can put in there 2cence worth. Pending Mod approval at the moment.