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    (Request) Add Libretro Neogeo CD Emulator

    Scheduled Pinned Locked Moved Ideas and Development
    neogeo cdlibretro core
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    • DarksaviorD
      Darksavior @MajorDangerNine
      last edited by Darksavior

      @MajorDangerNine I converted Last Blade 2 from chd to bin\cueand the tracks were all over the place. I noticed it from the character select screen and the first match. It might be the qt chdman converter I'm using. I gave up and re-downloaded.

      Update: I tested ~50 games in img\cue and all work except for Samurai Shodown 3. I downloaded the game from another source in iso\wav\cue but got the same results.

      MajorDangerNineM 1 Reply Last reply Reply Quote 0
      • MajorDangerNineM
        MajorDangerNine @Darksavior
        last edited by MajorDangerNine

        @Darksavior

        Update: I tested ~50 games in img\cue and all work except for Samurai Shodown 3. I downloaded the game from another source in iso\wav\cue but got the same results.

        Yeah, Samurai Shodown 3 also freezes RetroArch on my Pi as well. Checked NeoCD on the PC and it works fine with the same ROM, BIOS, and same Core Options. On the Pi, the CPU is being maxed out when it freezes.

        I converted Last Blade 2 from chd to bin\cueand the tracks were all over the place. I noticed it from the character select screen and the first match. It might be the qt chdman converter I'm using. I gave up and re-downloaded.

        Ah, I see now. Same behavior using the latest CHDMAN. Also happens on the PC.

        SBCGaming | Unofficial RetroPie Discord

        1 Reply Last reply Reply Quote 0
        • W
          Winklepicker
          last edited by

          I would love to see Neogeo CD officially added onto Retropie

          The ability to play Neogeo games with awesome CD quality soundtracks, and no loading is an absolute godsend to be honest.

          Please add onto Retropie

          1 Reply Last reply Reply Quote 1
          • akafoxA
            akafox
            last edited by

            I compiled the mame2003-plus core and got a "lr-fbalpha-neocd" core? (and the mame2003-plus core of course)

            What is that and how do you use it? How does it compare to this core?

            People want things easy...but then complain that life is boring...

            MajorDangerNineM 1 Reply Last reply Reply Quote 0
            • MajorDangerNineM
              MajorDangerNine @akafox
              last edited by MajorDangerNine

              @akafox That is unrelated to your install of mame2003-plus and has been part of RetroPie for some time now.

              Regardless, fbalpha-neocd is pretty good to my knowledge. Just a different mode for FBA to run in. Doesn't have the emulation hacks that NeoCD does, but other that that it is perfectly serviceable now that the NeoCD developer fixed FBA's lack of CDA playback (might need to update from source).

              Now if only either added CHD support. I'd even take the cue/bin format you get from decompressing the CHD being supported.

              SBCGaming | Unofficial RetroPie Discord

              akafoxA 1 Reply Last reply Reply Quote 0
              • akafoxA
                akafox @MajorDangerNine
                last edited by akafox

                @MajorDangerNine Yeah I figured that. Just thought it was strange to get two cores...that and it being from a mame core getting a fba core.

                I looked for the core on the forum here and you are correct been round awhile now. Odd I never ran across it till now. However I am going to try this core first. I am compiling it as I type for x64..if it works ok then i can try it on the PI for pits and piggels.

                CHD support is coming i see..which is good the few I have are CHD format anyway. SO MUCH room is saved that way...waiting for chd support on rearmed (of which I think it is added..I don't remember) that is for another thread though...

                Anyway going to try this out. and thanks for the code! :D

                People want things easy...but then complain that life is boring...

                1 Reply Last reply Reply Quote 0
                • akafoxA
                  akafox
                  last edited by

                  Okay works GREAT on x86/x64 but I am having a bit of a problem compiling for the RPI3.

                  I changed the CMakeLists.txt file as follows:

                  from
                  -march=x86-64 -mtune=generic
                  to
                  -march=armv7 -mtune=arm7

                  but I get this error

                  /home/pi/neocd_libretro-master/src/3rdparty/musashi/m68kopdm.cpp:1:0: error: target CPU does not support ARM mode

                  so I am at a loss :/

                  People want things easy...but then complain that life is boring...

                  MajorDangerNineM 1 Reply Last reply Reply Quote 0
                  • MajorDangerNineM
                    MajorDangerNine @akafox
                    last edited by

                    @akafox I think I just commented:

                    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -march=x86-64 -mtune=generic ${BASE_CXX_OPTIONS}")

                    Uncommented:

                    # set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -march=native ${BASE_CXX_OPTIONS}")

                    Then compiled it on my RPi3B.

                    Got a working version that way, though I don't understand much of anything about compiling. Basic idea I have is it is some sort of auto-conversion type deal is going, which is most likely the reason Samurai Shodown 3 freezes on the Pi but doesn't on the PC as something isn't going right in the supposed auto-conversion when it comes to that game.

                    SBCGaming | Unofficial RetroPie Discord

                    1 Reply Last reply Reply Quote 0
                    • akafoxA
                      akafox
                      last edited by

                      okay when I do that without changing the -march flag (I leave it "native" like you have ) I get this:

                      Scanning dependencies of target neocd_libretro
                      [ 2%] Building CXX object CMakeFiles/neocd_libretro.dir/src/3rdparty/musashi/m68kopdm.cpp.o
                      *** Error in `/usr/bin/c++': double free or corruption (top): 0x0070c0a0 ***
                      CMakeFiles/neocd_libretro.dir/build.make:62: recipe for target 'CMakeFiles/neocd_libretro.dir/src/3rdparty/musashi/m68kopdm.cpp.o' failed
                      make[2]: *** [CMakeFiles/neocd_libretro.dir/src/3rdparty/musashi/m68kopdm.cpp.o] Aborted
                      CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/neocd_libretro.dir/all' failed
                      make[1]: *** [CMakeFiles/neocd_libretro.dir/all] Error 2
                      Makefile:83: recipe for target 'all' failed
                      make: *** [all] Error 2

                      People want things easy...but then complain that life is boring...

                      MajorDangerNineM mituM 2 Replies Last reply Reply Quote 0
                      • MajorDangerNineM
                        MajorDangerNine @akafox
                        last edited by

                        @akafox Eh, I'm at a loss. Well, unless you are overclocking your Pi and haven't made sure it is stable.

                        I just did my best to follow what was HERE and produced that one binary for the RPi3B that I posted near the beginning topic.

                        Good luck. Hopefully the developer will add CHD support soon and polish whatever else needs polishing so that it can be made an official Libretro core.

                        SBCGaming | Unofficial RetroPie Discord

                        DarksaviorD 1 Reply Last reply Reply Quote 0
                        • mituM
                          mitu Global Moderator @akafox
                          last edited by

                          @akafox -march=native is not supported by the gcc compiler on the Pi (hence the crash). You can take a look at the compilation flags used by the RetroPie-Setup script for various platforms here.

                          1 Reply Last reply Reply Quote 0
                          • DarksaviorD
                            Darksavior @MajorDangerNine
                            last edited by Darksavior

                            @MajorDangerNine It's not an official libretro core for legal reasons. https://github.com/fabrice-martinez/neocd_libretro/issues/1

                            If you can figure out how to make samsho3 not freeze up, then please post an updated binary, thanks.

                            markwkiddM 1 Reply Last reply Reply Quote 0
                            • akafoxA
                              akafox
                              last edited by akafox

                              -- The C compiler identification is GNU 4.9.2
                              -- The CXX compiler identification is GNU 4.9.2

                              cmake -G "Unix Makefiles" passes no error

                              make fails

                              c++: error: unrecognized argument in option '-march=rpi3'
                              c++: note: valid arguments to '-march=' are: armv2 armv2a armv3 armv3m armv4 armv4t armv5 armv5e armv5t armv5te armv6 armv6-m armv6j armv6k armv6s-m armv6t2 armv6z armv6zk armv7 armv7-a armv7-m armv7-r armv7e-m armv7ve armv8-a armv8-a+crc iwmmxt iwmmxt2 native
                              CMakeFiles/neocd_libretro.dir/build.make:62: recipe for target 'CMakeFiles/neocd_libretro.dir/src/3rdparty/musashi/m68kopdm.cpp.o' failed
                              -cut-

                              when i use armv7 for -march= i get:

                              /home/pi/neocd_libretro/src/3rdparty/musashi/m68kopdm.cpp:1:0: error: target CPU does not support ARM mode

                              (This card is still raspian jessie)

                              @mitu said in (Request) Add Libretro Neogeo CD Emulator:

                              @akafox -march=native is not supported by the gcc compiler on the Pi (hence the crash). You can take a look at the compilation flags used by the RetroPie-Setup script for various platforms here.

                              I am not using the retropie-set up script. I am just ssh in and compiling

                              People want things easy...but then complain that life is boring...

                              DarksaviorD 1 Reply Last reply Reply Quote 0
                              • DarksaviorD
                                Darksavior @akafox
                                last edited by Darksavior

                                I just compiled it on my own, yay. The default options @MajorDangerNine provided works but I also tried on my pi3b+:
                                set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -march=armv8-a+crc -mtune=cortex-a53 ${BASE_CXX_OPTIONS}")

                                @akafox Maybe upgrade to stretch? My setup is always up-to date.
                                -- The C compiler identification is GNU 6.3.0 -- The CXX compiler identification is GNU 6.3.0

                                1 Reply Last reply Reply Quote 1
                                • wmarcioW
                                  wmarcio
                                  last edited by wmarcio

                                  Hi.
                                  Someone can do me a favor and compile it to run on a retropie lubuntu install? I am a total noob on do that.
                                  Thxs.

                                  akafoxA 1 Reply Last reply Reply Quote 0
                                  • akafoxA
                                    akafox @wmarcio
                                    last edited by akafox

                                    @wmarcio compile it to run on ulbuntu? it would be the same as any other compile build. Makes no difference I would think except for maybe needing a lot of dependencies. However are you asking if it can be done (I assume yes) or are you asking for the compiled core? I doubt anyone here will share the core..for various reasons.

                                    @ Darksavior THANK YOU! for that cmake line! I thought the RPi3 was arm7..guess I was wrong? Anyway I got it working! Works great. I did have to upgrade to stretch (retropie 4.4) my "main" sd card is on the old jessie because I am working on a project. I used the card out of my RPi1 (yes a raspberry pi 1) and just had to install some dependencies and it worked great. (No I put the card in my RPi3 and compiled it..yes I know it will not work with the pi1..)

                                    So my question here is why use the "Generic x64 options" to compile and not the "All architectures, optimized for the machine NeoCD is compiled on" line?
                                    Just curious that is all!

                                    So I set it up as a system in Retropie and it works from the GUI just like everything else does. Where does the .info file go? (I can't find them anywhere.) Now we just need a NEOGEO CD Theme for Retropie. (Hint!) Again thanks..cheers! :D

                                    Edit: I compiled using the "All architectures..." line. No errors compiled fine. Have not had the chance to "test the difference" I will report back when i can. So I can not tell a difference and yes samsho3 still locks up my pi no matter which one i use

                                    People want things easy...but then complain that life is boring...

                                    1 Reply Last reply Reply Quote 0
                                    • DarksaviorD
                                      Darksavior
                                      last edited by

                                      I reported the problem with samsho3 and it got fixed rather quickly. I can verify it works now.

                                      1 Reply Last reply Reply Quote 1
                                      • B
                                        barbudreadmon
                                        last edited by

                                        @MajorDangerNine said in (Request) Add Libretro Neogeo CD Emulator:

                                        Now if only either added CHD support

                                        A bounty is open about it, feel free to back it : https://www.bountysource.com/issues/70116022-request-chd-support-for-neo-geo-cd

                                        FBNeo developer - github - forum

                                        MajorDangerNineM 1 Reply Last reply Reply Quote 1
                                        • MajorDangerNineM
                                          MajorDangerNine @barbudreadmon
                                          last edited by MajorDangerNine

                                          @barbudreadmon Nice. Thanks for informing me about this. Still, I'd probably be more inclined to donate to the PSX one.

                                          https://www.bountysource.com/issues/57712065

                                          Just a personal preference. PSX is probably one of my favorite systems, while Neo Geo CD is a novelty to me at best.

                                          SBCGaming | Unofficial RetroPie Discord

                                          B 1 Reply Last reply Reply Quote 0
                                          • B
                                            barbudreadmon @MajorDangerNine
                                            last edited by

                                            @MajorDangerNine No problem :), i was just informing you about this.

                                            FBNeo developer - github - forum

                                            1 Reply Last reply Reply Quote 1
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