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Messages - Jochen Schäfer

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1
Games / Re: Dosbox and Dosbox-X
« on: February 19, 2026, 09:31:52 am »
Hi Dave

Yes ttf nearly uses the fullscreen; trying to run heretic results in the game occupying the top left corner of the screen though.

Wonder what has changed between dosbox and dosbox-x with regard to the surface option as surface works fine in dosbox.


Regards

Pete
I don't know exactly, I would have to diff the code to look why.
This also bugged me, but I have no solution at the moment.

2
Games / Re: Dosbox and Dosbox-X
« on: February 19, 2026, 09:30:15 am »
Yes, I saw that after. Unluckily the only ones that make sense for our platform are surface and ttf. TTF does sorta work and fills up the desktop when choosing full screen. Not sure what would happen using a graphical mode.
Seems there are limits to the SDL surface, at least with Panorama.
The dosbox-x code is limiting the ability. the SDL bitblt function is not used at that point.
But if you maximizes the window, SDL (I think) will scale it up, not respecting the aspect ratio. The Windows port will not allow you to maximize the window, most likely because of that.

3
Programming / Re: Please test os2emx-cross-toolchain
« on: February 19, 2026, 09:25:49 am »
Yes, it is this. I have to build the Dosbox-X cores one at a time, because even building two in parallel would result in constant out of memory compiler crashes. The rest of Dosbox-X is then build in parallel.

4
Games / Re: Dosbox and Dosbox-X
« on: February 12, 2026, 09:06:54 pm »
Hello Jochen

Windows 98 runs, but I can not control the mouse.

I just switched dosbox-x.conf that comes on the package to connect to the .img.

Regards
I can't reproduce your problem. I click in the Dosbox-X window, the mouse gets captured and then drag around windows etc.
But, at least, I know now, I have to fix the video capture ;-)

5
Games / Re: Dosbox and Dosbox-X
« on: February 12, 2026, 05:26:24 pm »
Sure, the image I'm using I got it from internet archive.
- https://archive.org/download/windows-98-in-dosbox-x
That was easy ;-)

6
Games / Re: Dosbox and Dosbox-X
« on: February 11, 2026, 09:25:20 am »
Hello Jochen

Windows 98 runs, but I can not control the mouse.

I just switched dosbox-x.conf that comes on the package to connect to the .img.

Regards
I will look into it. But I have to setup Win98 first ;-)

7
Games / Re: Dosbox and Dosbox-X
« on: February 10, 2026, 05:28:37 pm »
I dropped a new release, fixing the crash if a mount doesn't succeed.

8
Programming / Re: Uconv in Dosbox-X
« on: February 10, 2026, 09:58:51 am »
I think, I found the problem. Physfs loads uconv.dll at runtime and uses the signature
Code: [Select]
UniFreeUconvObject(UConvObject*),
while uconv.h and the system documentation say:
Code: [Select]
UniFreeUconvObject(UConvObject).
I removed the pointer, and look, no crashes anymore.

@Dave: Thanks for the hint at the symbol files. That's always useful.

9
Programming / Re: Uconv in Dosbox-X
« on: February 09, 2026, 04:53:36 pm »
Ah thank you. I tried to to locate the symbols, but couldn't find them.

10
Programming / Uconv in Dosbox-X
« on: February 09, 2026, 08:12:56 am »
Dosbox-X uses Physfs to access filesystems. Physfs uses Uconv.
When Dosbox-X cannot mount a drive, it destroys the Physfs object, and while doing so, UniFreeUconvObject crashes the program.
The pointer to the DLL functions seems to be valid, the Uconv object seems valid.
I attached the crash log. I can workaround the crash, if I force Physfs to not find uconv.dll, so it works without it.
I don't want to do that, but I don't know how to debug the issue, since this is OS territory.
Any ideas?

11
Applications / Re: Java applications
« on: January 29, 2026, 09:43:55 am »
No, the Apple I had no builtin Basic. It came with Wozmon, where you can look at memory locations and change them.
So what you would do, like most computers of its time, e.g. Altair etc, is, poke your assembled program into memory by keyboard or serial connection, and then run it.

12
Applications / Re: LibrePCB
« on: January 21, 2026, 09:18:07 am »
We need some OpenGL implementation to get stuff like this running. I don't care if it's slow BTW.

13
Internet / Re: Mypal68: A possible alternative browser?
« on: January 16, 2026, 12:12:46 pm »
Thanks for the info, but it's just one example. And, don't get me started on IDEs ;-)

14
Internet / Re: Mypal68: A possible alternative browser?
« on: January 16, 2026, 10:07:31 am »
A cross compile environemnt would really be neat, especially because more and more software move to build environment like meson, which also have to be ported to OS/2 otherwise.

15
Games / Dosbox and Dosbox-X
« on: January 14, 2026, 04:46:09 pm »
I have built a new Dosbox package from the newest Dosbox source code.
I also built a package for Dosbox-X for OS/2! I couldn't test every feature, but most things should work.

You find both packages here: https://joschs-robotics.de/dosbox/dosbox.html.

Have fun.

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