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    Tesla PMD-85 computer in RetroPie?

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    • J
      JimmyFromTheBay @Folly
      last edited by

      @Folly said in Tesla PMD-85 computer in RetroPie?:

      Indeed it will crash as it can't find the emulator core under that name.

      But why wouldn't it, as it's still there from before, running all the other emulators I installed from your script in the same way?

      Raspberry Pi 3b and 8GB Raspberry Pi 4, both running Retropie 4.7.1 installed from scratch using Raspberry Pi Imager, with wired keyboard, wireless mouse and double arcade joystick attached.

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      • F
        Folly @JimmyFromTheBay
        last edited by

        @JimmyFromTheBay said in Tesla PMD-85 computer in RetroPie?:

        @Folly said in Tesla PMD-85 computer in RetroPie?:

        Indeed it will crash as it can't find the emulator core under that name.

        But why wouldn't it, as it's still there from before, running all the other emulators I installed from your script in the same way?

        You told me that it crashed worse when the name mamemess_libretro.so is in the runcommand.
        So my reaction was :
        Indeed it will crash as it can't find the emulator core under that name as yours is mess_libretro.so.

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        • J
          JimmyFromTheBay @Folly
          last edited by

          @Folly But I edited the EMULATORS.CFG to tell it to look for mess_libretro.so (which is there, running the other systems) rather than mamemess_libretro.so (which isn't there, because I've never installed it).

          This is what my EMULATORS.CFG for the PMD85-1 looks like:

          lr-mess-cmd = "/opt/retropie/emulators/retroarch/bin/retroarch --config /opt/retropie/configs/pmd851/retroarch.cfg --appendconfig /opt/retropie/configs/pmd851/retroarch.cfg.add -v -L /opt/retropie/libretrocores/lr-mess/mess_libretro.so %ROM%"
lr-mess-pmd851-basename-autoframeskip = "/opt/retropie/emulators/retroarch/bin/retroarch --config /opt/retropie/configs/pmd851/retroarch.cfg --appendconfig /opt/retropie/configs/pmd851/retroarch.cfg.basename -S /home/pi/RetroPie/roms/pmd851 -s /home/pi/RetroPie/roms/pmd851 -v -L /opt/retropie/libretrocores/lr-mess/mess_libretro.so 'mame pmd851 -cfg_directory /opt/retropie/configs/pmd851/lr-mess -c -ui_active -autoframeskip -rompath /home/pi/RetroPie/BIOS/mame;/home/pi/RetroPie/roms/pmd851/ '%BASENAME%''"
lr-mess-pmd851-basename-frameskip_10 = "/opt/retropie/emulators/retroarch/bin/retroarch --config /opt/retropie/configs/pmd851/retroarch.cfg --appendconfig /opt/retropie/configs/pmd851/retroarch.cfg.basename -S /home/pi/RetroPie/roms/pmd851 -s /home/pi/RetroPie/roms/pmd851 -v -L /opt/retropie/libretrocores/lr-mess/mess_libretro.so 'mame pmd851 -cfg_directory /opt/retropie/configs/pmd851/lr-mess -c -ui_active -frameskip 10 -rompath /home/pi/RetroPie/BIOS/mame;/home/pi/RetroPie/roms/pmd851/ '%BASENAME%''"
lr-mess-pmd851-basename = "/opt/retropie/emulators/retroarch/bin/retroarch --config /opt/retropie/configs/pmd851/retroarch.cfg --appendconfig /opt/retropie/configs/pmd851/retroarch.cfg.basename -S /home/pi/RetroPie/roms/pmd851 -s /home/pi/RetroPie/roms/pmd851 -v -L /opt/retropie/libretrocores/lr-mess/mess_libretro.so 'mame pmd851 -cfg_directory /opt/retropie/configs/pmd851/lr-mess -c -ui_active -rompath /home/pi/RetroPie/BIOS/mame;/home/pi/RetroPie/roms/pmd851/ '%BASENAME%''"
lr-mess-pmd851-cass-autoframeskip = "/opt/retropie/emulators/retroarch/bin/retroarch --config /opt/retropie/configs/pmd851/retroarch.cfg --appendconfig /opt/retropie/configs/pmd851/retroarch.cfg.add -S /home/pi/RetroPie/roms/pmd851 -s /home/pi/RetroPie/roms/pmd851 -v -L /opt/retropie/libretrocores/lr-mess/mess_libretro.so 'pmd851  -rompath /home/pi/RetroPie/BIOS/mame;/home/pi/RetroPie/roms/pmd851/ -cfg_directory /opt/retropie/configs/pmd851/lr-mess -c -ui_active -autoframeskip -cass %ROM%'"
lr-mess-pmd851-cass = "/opt/retropie/emulators/retroarch/bin/retroarch --config /opt/retropie/configs/pmd851/retroarch.cfg --appendconfig /opt/retropie/configs/pmd851/retroarch.cfg.add -S /home/pi/RetroPie/roms/pmd851 -s /home/pi/RetroPie/roms/pmd851 -v -L /opt/retropie/libretrocores/lr-mess/mess_libretro.so 'pmd851  -rompath /home/pi/RetroPie/BIOS/mame;/home/pi/RetroPie/roms/pmd851/ -cfg_directory /opt/retropie/configs/pmd851/lr-mess -c -ui_active -cass %ROM%'"
lr-mess-pmd851-game-specific-cass-autoframeskip = "/opt/retropie/emulators/retroarch/bin/retroarch --config /opt/retropie/configs/pmd851/retroarch.cfg --appendconfig /opt/retropie/configs/pmd851/retroarch.cfg.add -S /home/pi/RetroPie/roms/pmd851 -s /home/pi/RetroPie/roms/pmd851 -v -L /opt/retropie/libretrocores/lr-mess/mess_libretro.so 'pmd851  -rompath /home/pi/RetroPie/BIOS/mame;/home/pi/RetroPie/roms/pmd851/ -cfg_directory /opt/retropie/configs/pmd851/lr-mess/%BASENAME% -c -ui_active -autoframeskip -cass %ROM%'"
lr-mess-pmd851-game-specific-cass = "/opt/retropie/emulators/retroarch/bin/retroarch --config /opt/retropie/configs/pmd851/retroarch.cfg --appendconfig /opt/retropie/configs/pmd851/retroarch.cfg.add -S /home/pi/RetroPie/roms/pmd851 -s /home/pi/RetroPie/roms/pmd851 -v -L /opt/retropie/libretrocores/lr-mess/mess_libretro.so 'pmd851  -rompath /home/pi/RetroPie/BIOS/mame;/home/pi/RetroPie/roms/pmd851/ -cfg_directory /opt/retropie/configs/pmd851/lr-mess/%BASENAME% -c -ui_active -cass %ROM%'"
lr-run_mess-pmd851-cass-autoframeskip = "/home/pi/RetroPie-Setup/scriptmodules/run_mess.sh /opt/retropie/emulators/retroarch/bin/retroarch /opt/retropie/libretrocores/lr-mess/mess_libretro.so /opt/retropie/configs/pmd851/retroarch.cfg \pmd851 /home/pi/RetroPie/BIOS/mame\;/home/pi/RetroPie/roms/pmd851  -autoframeskip -cfg_directory /opt/retropie/configs/pmd851/lr-mess -ui_active  -cass %ROM%"
lr-run_mess-pmd851-game-specific-cass-autoframeskip = "/home/pi/RetroPie-Setup/scriptmodules/run_mess.sh /opt/retropie/emulators/retroarch/bin/retroarch /opt/retropie/libretrocores/lr-mess/mess_libretro.so /opt/retropie/configs/pmd851/retroarch.cfg \pmd851 /home/pi/RetroPie/BIOS/mame\;/home/pi/RetroPie/roms/pmd851  -cfg_directory /opt/retropie/configs/pmd851/lr-mess/%BASENAME% -autoframeskip -ui_active  -cass %ROM%"
mame-pmd851-basename-autoframeskip = "/opt/retropie/emulators/mame/mame -rompath /home/pi/RetroPie/BIOS/mame\;/home/pi/RetroPie/roms/pmd851 -v -c -ui_active -statename pmd851/%BASENAME% -autoframeskip pmd851  %BASENAME%"
mame-pmd851-basename-frameskip_10 = "/opt/retropie/emulators/mame/mame -rompath /home/pi/RetroPie/BIOS/mame\;/home/pi/RetroPie/roms/pmd851 -v -c -ui_active -statename pmd851/%BASENAME% -frameskip 10 pmd851  %BASENAME%"
mame-pmd851-basename = "/opt/retropie/emulators/mame/mame -rompath /home/pi/RetroPie/BIOS/mame\;/home/pi/RetroPie/roms/pmd851 -v -c -ui_active -statename pmd851/%BASENAME% pmd851  %BASENAME%"
mame-pmd851-cass-autoframeskip = "/opt/retropie/emulators/mame/mame -rompath /home/pi/RetroPie/BIOS/mame\;/home/pi/RetroPie/roms/pmd851 -v -c -autoframeskip -ui_active -statename pmd851/%BASENAME% pmd851  -cass %ROM%"
mame-pmd851-cass = "/opt/retropie/emulators/mame/mame -rompath /home/pi/RetroPie/BIOS/mame\;/home/pi/RetroPie/roms/pmd851 -v -c -ui_active -statename pmd851/%BASENAME% pmd851  -cass %ROM%"
mame-pmd851-game-specific-cass-autoframeskip = "/opt/retropie/emulators/mame/mame -rompath /home/pi/RetroPie/BIOS/mame\;/home/pi/RetroPie/roms/pmd851 -cfg_directory /opt/retropie/configs/pmd851/mame/%BASENAME% -v -c -autoframeskip -ui_active -statename pmd851/%BASENAME% pmd851  -cass %ROM%"
mame-pmd851-game-specific-cass = "/opt/retropie/emulators/mame/mame -rompath /home/pi/RetroPie/BIOS/mame\;/home/pi/RetroPie/roms/pmd851 -cfg_directory /opt/retropie/configs/pmd851/mame/%BASENAME% -v -c -ui_active -statename pmd851/%BASENAME% pmd851  -cass %ROM%"
default = "lr-mess-pmd851-cass"

          Raspberry Pi 3b and 8GB Raspberry Pi 4, both running Retropie 4.7.1 installed from scratch using Raspberry Pi Imager, with wired keyboard, wireless mouse and double arcade joystick attached.

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          • F
            Folly @JimmyFromTheBay
            last edited by Folly

            @JimmyFromTheBay

            I understand.

            And, did standalone mame run ?
            What version lr-mess do you use ?

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            • J
              JimmyFromTheBay @Folly
              last edited by

              @Folly The PMD85 booted up in MAME, but the game didn't run when I typed MGLD 00.

              Raspberry Pi 3b and 8GB Raspberry Pi 4, both running Retropie 4.7.1 installed from scratch using Raspberry Pi Imager, with wired keyboard, wireless mouse and double arcade joystick attached.

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              • F
                Folly @JimmyFromTheBay
                last edited by Folly

                @JimmyFromTheBay said in Tesla PMD-85 computer in RetroPie?:

                @Folly The PMD85 booted up in MAME, but the game didn't run when I typed MGLD 00.

                First you have to do the MGLD 00 and then you have to go into the mame menu with the tab key and go to "tape control" and press "play" in order to load the cassette.
                Let me know if it works.

                In the mame menu you can also find the version number.
                Go to "About MAME".
                Please provide them for both standalone mame and lr-mess.
                For lr-mess you can use a system that works in order to get it.

                I have a simple idea to let you run almost the latest lr-mess without interfering with your install.
                Will test my idea first on my computer and let you know if it can work.
                However I need to know what the underlying OS of your RetroPie image is.
                Can you provide the output of this command ? :

                lsb_release -s -i -d -r -c
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                • J
                  JimmyFromTheBay @Folly
                  last edited by

                  @Folly It's Raspbian 10 Buster.

                  And the game runs in MAME now, many thanks :)

                  Raspberry Pi 3b and 8GB Raspberry Pi 4, both running Retropie 4.7.1 installed from scratch using Raspberry Pi Imager, with wired keyboard, wireless mouse and double arcade joystick attached.

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                  • F
                    Folly @JimmyFromTheBay
                    last edited by Folly

                    @JimmyFromTheBay

                    Do you want to know the idea to use almost the latest lr-mess without interfering with your setup ?
                    Or are you happy with standalone mame ?

                    J 1 Reply Last reply Reply Quote 0
                    • J
                      JimmyFromTheBay @Folly
                      last edited by

                      @Folly I would love to know :)

                      Raspberry Pi 3b and 8GB Raspberry Pi 4, both running Retropie 4.7.1 installed from scratch using Raspberry Pi Imager, with wired keyboard, wireless mouse and double arcade joystick attached.

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                      • F
                        Folly @JimmyFromTheBay
                        last edited by Folly

                        @JimmyFromTheBay

                        Well, just like with windows it doesn't actually matter where your program is located.
                        So here you can find all collected binaries, my builds from source or backups from RetroPie and libretro buildbot.
                        So you can just download a binary.
                        For instance you should be able to use :
                        lr-mess_0.264_arm7l_gcc8_rpi4_probably_missing_drivers_RP_bin.7z
                        Then decompress it and place the lr-mess folder in, for example, Downloads, like this :
                        /home/pi/Downloads/lr-mess
                        That way you don't need root permissions.
                        You could rename the lr-mess folder into lr-mess0264 so you will know what version is in the folder, so it becomes :
                        /home/pi/Downloads/lr-mess0264
                        Then make your own runcommand in the emulators.cfg, for example :

                        lr-mess0264-pmd851-cass = "/opt/retropie/emulators/retroarch/bin/retroarch --config /opt/retropie/configs/pmd851/retroarch.cfg --appendconfig /opt/retropie/configs/pmd851/retroarch.cfg.add -S /home/pi/RetroPie/roms/pmd851 -s /home/pi/RetroPie/roms/pmd851 -v -L /home/pi/Downloads/lr-mess0264/mamemess_libretro.so 'pmd851  -rompath /home/pi/RetroPie/BIOS/mame;/home/pi/RetroPie/roms/pmd851/ -cfg_directory /opt/retropie/configs/pmd851/lr-mess -c -ui_active -cass %ROM%'"

                        You will see that only the program folder will differ from the "original" runcommand (and for you the core name too).
                        For above runcommand the hash folder should not be needed.
                        You can keep the hash foler just in there, no need to copy it.

                        Well that is the basic idea.
                        I tested it here and it did work for me switching between versions.

                        Remember, do it for your own risk.
                        Don't blame me if somehow something goes wrong.
                        Then again, in my opinion there isn't much that can go wrong.

                        Let me know if it works for you.

                        Btw.
                        Newer lr-mess versions lack some drivers.
                        Not sure why, but I assume they removed drivers that are not important for the libretro core developers or they just don't have the proper tools to make a full accurate database.
                        Anyhow if the pmd851 isn't there you can try an older binary, for example 0251.

                        J 1 Reply Last reply Reply Quote 1
                        • J
                          JimmyFromTheBay @Folly
                          last edited by

                          @Folly Thanks very much, will give that a try :)

                          Raspberry Pi 3b and 8GB Raspberry Pi 4, both running Retropie 4.7.1 installed from scratch using Raspberry Pi Imager, with wired keyboard, wireless mouse and double arcade joystick attached.

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                          • J
                            JimmyFromTheBay @JimmyFromTheBay
                            last edited by

                            @Folly Yep, works beautifully, and runs a lot better than MAME too. (Presumably will also work for anything else that needs MAMEMESS.) Many thanks again :)

                            Raspberry Pi 3b and 8GB Raspberry Pi 4, both running Retropie 4.7.1 installed from scratch using Raspberry Pi Imager, with wired keyboard, wireless mouse and double arcade joystick attached.

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                            • F
                              Folly @JimmyFromTheBay
                              last edited by Folly

                              @JimmyFromTheBay

                              Nice to hear.;-)

                              So now we know it was the old lr-mess version all along.

                              (Presumably will also work for anything else that needs MAMEMESS.)

                              Yep.

                              Btw. 0264 could be the last for Buster and Bullseye.
                              as mame will need newer gcc versions now to compile.
                              But perhaps they make a patch for that, we will see.

                              J 1 Reply Last reply Reply Quote 0
                              • J
                                JimmyFromTheBay @Folly
                                last edited by JimmyFromTheBay

                                @Folly So just to figure this out:

                                Let's say I want to be able to run certain MAME games using the new "mamemess" - eg Prize Space Invaders which runs a bit nastily on my old version of lr-mame - but without overwriting the old lr-mame and screwing up all my old systems. I've called it "newmame".

                                So I've added this line to EMULATORS.CFG in the configs/arcade folder:

                                lr-newmame = "/opt/retropie/emulators/retroarch/bin/retroarch -L /home/pi/Downloads/lr-mess264/mamemess_libretro.so --config /opt/retropie/configs/arcade/retroarch.cfg %ROM%"

                                All I've done there is take the existing, working line for lr-mame:

                                lr-mame = "/opt/retropie/emulators/retroarch/bin/retroarch -L /opt/retropie/libretrocores/lr-mame/mamearcade_libretro.so --config /opt/retropie/configs/arcade/retroarch.cfg %ROM%"

                                and replace /opt/retropie/libretrocores/lr-mame/mamearcade_libretro.so with /home/pi/Downloads/lr-mess264/mamemess_libretro.so, ie (what looks to me like) replace the old MESS executeable with the new MAMEMESS version.

                                But that crashes (log below), so what have I misunderstood? Do I need to find a different version of MAME and install that in another new folder as I did for the PMD85? I thought the whole point of the "mamemess" thing was that MAME and MESS were the same executeable?

                                Parameters: 
Executing: /opt/retropie/emulators/retroarch/bin/retroarch -L /home/pi/Downloads/lr-mess264/mamemess_libretro.so --config /opt/retropie/configs/arcade/retroarch.cfg "/home/pi/RetroPie/roms/arcade/zzz-all/v4psi.zip" --verbose --appendconfig /dev/shm/retroarch.cfg'|'"/home/pi/RetroPie/roms/arcade/zzz-all/v4psi.zip.cfg"
[INFO] RetroArch 1.8.8 (Git 9552f87)
[INFO] Redirecting save file to "/home/pi/RetroPie/roms/arcade/zzz-all/v4psi.srm".
[INFO] Redirecting save state to "/home/pi/RetroPie/roms/arcade/zzz-all/v4psi.state".
[INFO] === Build =======================================
[INFO] Capabilities:  NEON VFPv3 VFPv4
[INFO] Built: Nov  2 2020
[INFO] Version: 1.8.8
[INFO] Git: 9552f87
[INFO] =================================================
[INFO] Loading dynamic libretro core from: "/home/pi/Downloads/lr-mess264/mamemess_libretro.so"
[INFO] [Environ]: GET_LANGUAGE: "0".
[INFO] [Environ]: RETRO_ENVIRONMENT_SET_CORE_OPTIONS_INTL.
[INFO] [Environ]: SET_CONTROLLER_INFO.
[INFO] [Environ]: SET_SUPPORT_NO_GAME: yes.
[INFO] [Remaps]: remap directory: /home/pi/.config/retroarch/config/remaps
[INFO] Redirecting save file to "/home/pi/RetroPie/roms/arcade/zzz-all/v4psi.srm".
[INFO] Redirecting save state to "/home/pi/RetroPie/roms/arcade/zzz-all/v4psi.state".
[INFO] [Environ]: GET_LOG_INTERFACE.
[INFO] [Environ]: SYSTEM_DIRECTORY: "/home/pi/RetroPie/BIOS".
[INFO] [Environ]: CORE_ASSETS_DIRECTORY: "/home/pi/.config/retroarch/downloads".
[INFO] [Environ]: SET_PIXEL_FORMAT: XRGB8888.
[INFO] [Environ]: SET_INPUT_DESCRIPTORS:
[INFO] [Environ]: UNSUPPORTED (#64).
[INFO] [Environ]: SET_KEYBOARD_CALLBACK.
[libretro INFO] ------------------------
[libretro INFO] MAME 0.264 (170929e0)
[libretro INFO] ------------------------
[INFO] Content loading skipped. Implementation will load it on its own.
[libretro INFO] Starting game: "/home/pi/RetroPie/roms/arcade/zzz-all/v4psi.zip"
[libretro ERROR] Driver not found: v4psi
[libretro ERROR] System not found: zzz-all
[INFO] [Environ]: SET_ROTATION: 0
[libretro ERROR] Unknown system 'v4psi'
[libretro ERROR] 
"v4psi" approximately matches the following
supported machines (best match first):

[libretro ERROR] vlsi5             286 motherboards with 5-chip VLSI chipset    (<unknown>, 198?)
[libretro ERROR] vpcii             VPC II                                       (Victor, 1987)
[libretro ERROR] vsmile            V.Smile                                      (VTech, 2005)
[libretro ERROR] psion1            Organiser I                                  (Psion, 1984)
[libretro ERROR] eps               EPS                                          (Ensoniq, 1988)
[libretro ERROR] vip               Cosmac VIP (VP-711)                          (RCA, 1977)
[libretro ERROR] vis               Video Information System MD-2500             (Tandy/Memorex, 1992)
[libretro ERROR] v4p895p3          V4P895P3/SMT V5.0                            (QDI, 199?)
[libretro ERROR] 486apio           486 APIO                                     (EFA, 199?)
[libretro ERROR] a486sio           ISA-486SIO rev. 1.2                          (Asus, 199?)
[libretro ERROR] pasopia           Personal Computer Pasopia PA7010             (Toshiba, 1982)
[libretro ERROR] phusion           Phusion                                      (VTech, 2000)
[libretro ERROR] polysix           Polysix Programmable Polyphonic Synthesizer  (Korg, 1980)
[libretro ERROR] psioncm           Organiser II CM                              (Psion, 1986)
[libretro ERROR] psionla           Organiser II LA                              (Psion, 1986)
[libretro ERROR] psionlz           Organiser II LZ                              (Psion, 1989)
[ERROR] Failed to load content
[INFO] Content ran for a total of: 00 hours, 00 minutes, 00 seconds.
[INFO] Unloading game..
[INFO] Unloading core..
[INFO] Unloading core symbols..
[INFO] [Core Options]: Saved core options file to "/home/pi/.config/retroarch/config/MAME/MAME.opt"

                                Raspberry Pi 3b and 8GB Raspberry Pi 4, both running Retropie 4.7.1 installed from scratch using Raspberry Pi Imager, with wired keyboard, wireless mouse and double arcade joystick attached.

                                F 1 Reply Last reply Reply Quote 0
                                • F
                                  Folly @JimmyFromTheBay
                                  last edited by Folly

                                  @JimmyFromTheBay

                                  lr-mamemess.so only runs non-acade.
                                  So that is why.

                                  Here are my mamearcade.so binaries which are for arcade only :

                                  Here is the info of that driver :
                                  Driver v4psi (Prize Space Invaders (BWB IN2, £20, 50p/30p Play, 20" Version 1.1) (MPU4 Video)): @casino@misc@no_media@

                                  Seems it doesn't have a good tag nor has it a non-arcade or arcade tag.
                                  I think the mamearcade.so should have the driver but expect that the driver will not work.

                                  Btw.
                                  It's better to open a new topic for this as this topic is for PMD-85.

                                  J 1 Reply Last reply Reply Quote 0
                                  • J
                                    JimmyFromTheBay @Folly
                                    last edited by

                                    @Folly Bah, doesn't work, even though it works in lr-mame with an identical command line except for the address of the executeable :(

                                    (What's the difference between, say, the "gcc8" and "gcc10" versions?)

                                    Raspberry Pi 3b and 8GB Raspberry Pi 4, both running Retropie 4.7.1 installed from scratch using Raspberry Pi Imager, with wired keyboard, wireless mouse and double arcade joystick attached.

                                    F 1 Reply Last reply Reply Quote 0
                                    • F
                                      Folly @JimmyFromTheBay
                                      last edited by

                                      @JimmyFromTheBay

                                      See here the info in my script.

                                      J 1 Reply Last reply Reply Quote 1
                                      • J
                                        JimmyFromTheBay @Folly
                                        last edited by

                                        @Folly Cheers. I'm puzzled why it doesn't work, then, but it looks like this is the end of the road. Cheers for the assistance with the PMD 85, will be handy with other MESS systems :)

                                        Raspberry Pi 3b and 8GB Raspberry Pi 4, both running Retropie 4.7.1 installed from scratch using Raspberry Pi Imager, with wired keyboard, wireless mouse and double arcade joystick attached.

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                                        • J
                                          jose1711
                                          last edited by

                                          Tried this on a PC but pressing Tab does not bring the menu. Tried changing the key bindings but that did not help either. Anyone has an idea?

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                                          • F
                                            Folly @jose1711
                                            last edited by Folly

                                            @jose1711 said in Tesla PMD-85 computer in RetroPie?:

                                            Tried this on a PC but pressing Tab does not bring the menu. Tried changing the key bindings but that did not help either. Anyone has an idea?

                                            You tried with "lr-mess" right ?
                                            There have been some changes recently.
                                            You need to use retroarch's "game-focus" (default key is Print-Screen Scroll Lock) first in order to use "tab" for the mame UI.
                                            Let me know if that works for you.

                                            J 1 Reply Last reply Reply Quote 0
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