Strange error in Dosbox

[Dragu]

@lmerckx
Thanks for your work. What I can still not understand, why there are different versions in Dosbox between PI2 and PI3. Just curiosity.

[lmerckx]

@Dragu I don't know either: same sources, same compiler directives (in package).
It is why I want to check if it can be external to the package.

[lmerckx]

@Dragu @voljega Here it is: https://www.proximuscloud.be/web/app/share/invite/3LrasrDfoc
It is a dosbox RPI3 (r4063), compiled in current environment.

[Dragu]

@lmerckx
Hi dear, I just tested but no improvements of speed. What I can still not understand is the hudge volume of this file for Recalbox PI3. Jessie version 0.74 is about 2.3MB, Windows version 0.74 about 3.7MB and this here about 5.5MB. Could it that this is a 64 bit compilation ? Perhaps a switch option ?

[lmerckx]

@dragu Things become clearer (I hope) ...
Not a problem of 32/64 bits but I suppose a compilation directive change (unexpected).

What about this one: https://www.proximuscloud.be/web/app/share/invite/r5zB6k7h7b

It is the new sources (virtual keyboard + b*mp) but the old way to compile !

[Dragu]

@lmerckx
I will test now. But wanted to post you picture about the last version and Jessie074. You see the hudge code.

[lmerckx]

Yes, this one is smaller in fact

[Dragu]

@lmerckx
Good news, speed is mostly back. Perhaps other compilation optimisation still possible. @voljega may also have an opinion. Thanks.

[lmerckx]

The compilation directives are back to normal, but code has been updated (b*mp to more recent version). It can be the differences.
After testing, it is faster for me too ... but not drastically.

[Dragu]

@lmerckx
I suppose you have a different version for PI2, I still dont understand nothing at this.

[voljega]

@lmerckx
@dragu said in Strange error in Dosbox:

@voljega may also have an opinion. Thanks.

Tested Epic Pinball, Doom, Wacky Wheels they all work fine with no lagging in image and sound
However Tyrian and Tyrian 2000 still lag a little (mostly in sound) and I'm pretty sure they were working fine before (not 100% sure, though, I may have tested them on my PC and without sound on Pi and thus not noticed sound lagging)

Maybe @dragu could compare those two ones with his old version ?

[lmerckx]

@Dragu @voljega Both problems have a solution. I will post changes for next version.
I don't really understand why there is still a performance gap. Perhaps, modifications of new version or my adaptations to maintain SDL2 patch.

I will check further.

Thanks for your help !

[lmerckx]

@voljega @Dragu It is possible to test an unstable update with this modification if you want: https://review-424-dosbox-foh6cc-archive-review-prod.recalbox.com
It's ok for me on RPI2.

[voljega]

@lmerckx sorry I don't think I will have time for it

[lmerckx]

@voljega No problem

[Dragu]

@lmerckx
Hi,
so it means that a new system build include modifications for dosbox ?
Its not just the emulator that change, so not just a copy and replace. Are some other things new in this, new kernel because also new kernel overlays in this build. I also need more informations before I install.

[lmerckx]

@dragu Yes, I understand.
This is not a release, but a BETA version which is built from the release 18.03.30 and added the DosBox modifications explained above.

There is always a risk to update your recalbox with this kind of unstable version. So, I can understand if you don't want to. And it is preferable to make a backup before doing it.

If you want to do it, simply change your recalbox.conf file by replacing the line
updates.type=stable
by
updates.type=https://review-424-dosbox-foh6cc-archive-review-prod.recalbox.com

Then reboot and accept the update.

[Dragu]

@lmerckx
But could you also just give us the modified dosbox, as before ? No problem to copy it to /usr/bin. Because honestly I think, better to test this alone. Before all, because any way no kernel changement and with additional risk to introduce new errors not depending from dosbox but from untested environment.

[lmerckx]

@dragu OK, here it is: https://www.proximuscloud.be/web/app/share/invite/FQftGUSmTz

[Dragu]

#lmerckx
Hi, thanks for the providing as part.
So, I tested this version Dosbox size 3089924 , much smaller as all new before. Speed is better as this before also, but not reach the older version. Now if you tell me that it is compiled with sdl2 and that this is a need for the future, perhaps this library is a little slower, not the first time.
Best test for me always Crusader No remorse, video ok, sound a little more chopy and echoed as my oldest version OS 170417 Dosbox size 2977700, but better as the last rebuild.
And for game speed, as example if I let crusader turn around own axle, with dos OS 170417 he make 20 Turns in 20 seconds, with the provided 20 Turns in 25 seconds. To give you an indication.