If you are setting Keyboard keys, note that numpad and arrow keys are not supported at this time. It's worth a mention that, along with the Naomi, Reicast also supports games released for the Sammy Atomiswave, which was another arcade board based on the Dreamcast hardware. Error 2 is a bit more vague (according to Naomi documentation, that means a region mismatch). Emulation of the games work perfectly fine, but basic documentation of how to get it running is extremely lacking. Various licensees (such as Capcom, Arc Sys, and even Nintendo) licensed the hardware during its lifespan to produce arcade games with. Monkey Ball defaults with the directional axises on the analog stick inverted. This isn’t just a DEMUL thing it’s common with a lot, if not all emulators. If you get failures when loading all roms in lr-Reciast then there is a useful script fix suggested in the above thread. In Part 2 we’ll actually cover to how set up DEMUL on your PC and the issues and gotchas that goes along with that. You may be able to access this folder directly by going to Settings > Advanced > Open qkoJAMMA Folder. @AdamBeGood Can you add more details - what are the rom/folders/chd names you've tried ? Thanks for your incredible tutorials. So if my game is not listed in that header, then it is not supported, Is this correct? Along with the usual dc_flash.bin and dc_boot.bin for running Dreamcast games, you'll also need a third BIOS file in order to boot Naomi titles. Alternatively, you may expand the window and give them your Host IP, Port, and Delay. For NAOMI alone, there’s at least 10 different ones available, which are from different regions, different hard revisions and cartridge types. To understand how DEMUL works with ROMs and why a lot of people find it difficult to get games running, we need to do a quick lesson on MAME. In your opinion, there May be a Way to make this work? If nothing happens, download the GitHub extension for Visual Studio and try again. For Atomiswave games, the BIOS file that you want is one called awbios.zip. To summarise the 3 main points to take away from this are: I could never find all this information about DEMUL in one central place. This guide is purely for arcade emulation, I won’t be covering Dreamcast in this guide as that is well documented elsewhere. This means that it's looking for a .CHD file named gds-0008.chd, which is a dump of the GD-ROM. When the Launcher is invoked for game sessions via command line, the launcher menu is kept available through an icon on the system tray. Let’s look at Capcom vs SNK 2. I manage to improve the performance a little bit since this video but not as much on this system as with some others. You’ve just figured out half the battle. This will launch your ROM of choice in NullDC, giving you an opportunity to test your inputs. If the option is available on your arcade stick, you can also try to select the "PS3" option on your controller and try again without the Keyboard Mapper enabled. This works perfectly on the RPi4. Either method works. There’s a lot of information and forum posts saying you can load bin files directly, converting CHDs and making lst files and other rubbish. If we load up DEMUL and go to File > Load NAOMI, you’ll be able to see pretty quickly what games run on a particular platform. These were called NAOMI, NAOMI GD-ROM and NAOMI 2. That said, expanding keyboard controls is anticipated in a future release, since arcade cabinets popularly use IPAC and similar devices that simulate keyboard inputs. Maybe a few other things too. Select any ROM from the drop-down menu, and press the Play Offline button. [DEPRECATED] A nullDC launcher & distribution optimized for peer-to-peer online gaming on the NAOMI/Atomiswave platform. The correlation about what the correct ROMs to use is foggy as hell and isn’t officially documented anywhere. As a result, your viewing experience will be diminished, and you may not be able to execute some actions. There is some great advice for this too in the working dreamcast games thread also: https://retropie.org.uk/forum/topic/21031/working-dreamcast-games. Just click the "Setup" button and follow the prompts. Dreamcast CDI and GDI ROMs are unsupported at this time. Fixing this is pretty trivial: open the Libretro menu, go to Controls, swap around Axis 1 and Axis 2, and save it as a game remap. Learn how your comment data is processed. A system BIOS is a duplicate of the operating system which you are trying to emulate, in our case, the NAOMI or Atomiswave OS. Press Generate Host Code and press the Clipboard icon to copy the generated code. maybe you're missing the Naomi GDrom BIOS (naomigd.zip ?). If applicable, press the Guess button to try again. My controller is only half-detected / I am encountering input issues when I use the controller setup. Otherwise, you may launch any path by running: nullDCNetplayLauncher.exe --lst-path --offline 1, nullDCNetplayLauncher.exe --gameid cvs2 --hosting 1 --ip --port --delay , nullDCNetplayLauncher.exe --gameid cvs2 --hosting 0 --ip --port --delay . The first step is to install lr-reicast, which can be installed from the experimental menu in RetroPie Setup. Just took me some time to find all the BIOS with the correct checksum (available in the wiki for anyone who wonders). You may edit your keyboard and joystick definitions by editing the'.qkc and .qjcfiles respectively, found in the nulldc-1-0-4-en-win\qkoJAMMA directory. https://retropie.org.uk/forum/topic/3/read-this-first, https://github.com/libretro/libretro-super/blob/master/dist/info/reicast_libretro.info. Paste it to your opponent, and they should be able to generate the server details from there. Have a gander at the below. I have also a Sega Astro City with Groovymame 15KHz PC installed. This netplay method works for any local LAN or virtual LAN setup like Radmin VPN, ZeroTier, or Hamachi. He can also cook a mean cheese toastie. Any idea if some changes to flycast has been made that might break old naomi setups? You will either need to create or join a network with others also using NullDC prior to playing.