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Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

DOSBOX doesn't launch game on Retropie

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dosboxraspberry pi 5
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  • N
    nelsonchelini
    last edited by 17 Apr 2024, 17:10

    Hi all,

    As many of the posts I've seen so far, I'm newbie here as well.
    I'm using Raspberry Pi 5 8gb and installed Retropie which works just fine with all emulators I've tested so far, except DOSBOX.
    I've tried some tips from other's Forum topics but it didn't work either. First error was occurring was related to the Timitidy plugin that was installed and seems to be working. But the games still doesn't launch. Please, see below a transcription of the log file.

    Parameters:
    Executing: bash /home/nelsonchelini/RetroPie/roms/pc/+Start\ DOSBox.sh "/home/nelsonchelini/RetroPie/roms/pc/Battle chess/bchess/CHESS. EXE"
    Requested buffer size 32768, fragment size 8192
    ALSA pcm 'default' set buffer size 32768, period size 8192 bytes
    /home/nelsonchelini/RetroPie/roms/pc/+Start DOSBox.sh: line 43:2388 Segmentation fault
    TiMidity starting in ALSA server mode "/opt/retropie/emulators/dosbox/bin/dosbox" "S{params[@]}"
    Opening sequencer port: 128:0 128:1 128:2 128:3

    I hope somebody could shed some light, please.

    Thanks!

    A 1 Reply Last reply 17 Apr 2024, 17:46 Reply Quote 0
    • A
      abj @nelsonchelini
      last edited by 17 Apr 2024, 17:46

      @nelsonchelini

      Did you have add the following line in /boot/firmware/config.txt file ?

      `kernel=kernel8.img`
      

      `Please be patient, my English is not very good.`

      N 1 Reply Last reply 18 Apr 2024, 01:02 Reply Quote 0
      • N
        nelsonchelini @abj
        last edited by 18 Apr 2024, 01:02

        @abj Just tried, but can't save it after changed. System doesn't allow me to.
        What should I do to get permission to do so?

        E 1 Reply Last reply 18 Apr 2024, 03:25 Reply Quote 0
        • E
          ExarKunIv @nelsonchelini
          last edited by 18 Apr 2024, 03:25

          @nelsonchelini sudo nano /boot/firmware/config.txt

          Then add kernel=kernel8.img at the end

          RPi3B+ / 200GB/ RetroPie v4.5.14, RPi4 Model B 4gb / 256gb / RetroPie 4.8.2
          RPi5 4gb / 512gb / RetroPie 4.8.9 -Basic
          Maintainer of RetroPie-Extra .

          1 Reply Last reply Reply Quote 0
          • A
            abj
            last edited by 18 Apr 2024, 05:15

            After you did what ExarKunIv say, to save the change to the file, press ctrl+O AND ctrl+X to exit from terminal window.

            If you still have issue, you can plug the sd card to a Window machine and add the line to the file (Boot patition is readable in Windows).

            `Please be patient, my English is not very good.`

            N 1 Reply Last reply 18 Apr 2024, 15:50 Reply Quote 0
            • N
              nelsonchelini @abj
              last edited by nelsonchelini 18 Apr 2024, 15:50

              @abj @ExarKunIv That worked! Thanks a lot for your help, both of you! The only thing I was not able to get was to run the games in full screen mode. They are running in 2 square inch, pretty much.

              There is the "DOS" screen on top of the OS Screen, then the game screen on top of them all, but in cascade mode. Couldn't find the full screen shortcut... Any tips?

              Screen_png.png

              1 Reply Last reply Reply Quote 0
              • M
                mitu Global Moderator
                last edited by 19 Apr 2024, 06:35

                Try using dosbox-staging instead or choosing a lower resolution for plain dosbox through the runcommand launch menu.

                1 Reply Last reply Reply Quote 0
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