Please do not post a support request without first reading and following the advice in

lr-atari800, 5200, artifacting, BASIC, and other guidance

  • PS, in theory, we could also detect [OSb] or [OSa] and launch with the appropriate machine. There are a few disk images out there that only work with OSb or OSa. It's late though, and I have to stop for today. But it would work the same way, only you need to switch machines to 400/800.

    Also -- the above script can be hacked to work with atari800 as well. You need to remove all the sed lines that affect the core options file, retaining only those that affect atari800.cfg. Probably need to change the path to ~/.atari.cfg, IIRC. And of course, change the emulator name from lr-atari800 to just atari800.

  • I know I'm the only one adding to this thread pretty much, but I just edited a bunch of the preceding, and included new sections explaining OS revisions, the multiplicity of confusing file formats, and a bunch of other things.

    This is far too much to go on the Wiki, but maybe a link to here would be appropriate?

  • @rkoster are you sure this wouldn't deserve its own section in the documentation? It's as detailed as it gets and comparable in depth to things like the xboxdrv mapping guide that @mediamogul wrote at one point, for instance.

    Certainly a link would be good, but your call, really.

  • @pjft Oh, I’m fine with it being in the wiki. Don’t know what the process is for that though!

  • @rkoster I believe it's all on GitHub, but I imagine someone who's actually documented their own RetroPie contributions (shame on me) would be able to advise better :)

  • @pjft Well, I added a pile of stuff to the Wiki, including stuff that isn't in the thread (BIOS info mostly).

  • The script has been updated to handle automatically providing the correct settings for OSa games [edit: and OSb games]. This involves setting both the system to Rev. A 400/800, and setting the BASIC revision to A. You will need to find the BASIC Rev. A rom file and place it in the BIOS folder for that part to work correctly; the instructions above have been amended to walk you through that and provide the correct md5 hash for that version of BASIC.

    If you installed the usual recommended ATARIOSB.ROM, you don't need to install anything for the OSb games.

    It's also now on github at

  • I fixed a bug (typo, really) with the handling of OSb games. Updated script is on github.

  • @rkoster wow this is great. Thanks. Haven’t read it through completely yet as I’m away on business. But what about games like, one of my favourites, Spelunker that require some keyboard commands like space bar for phantom blaster and keys to launch flares and dynamite. Can that be set on say my shanwan ps3 controller to use it? Basically all others work fine as Atari Joystick. I do have a Logitech wireless keyboard with mouse pad so I could use that in front of me as well for extra commands. But would be fiddly if could all be done with the controller.

  • @PCKid Well, it's a big ask to get a computer to work fully with a controller, of course. There's no way to cover every possible mapping. The most common keys that you tend to run into include the number keys (ex: setting difficulty in Jumpman), space bar (Spelunker, as you mention), and Enter, but something like Star Raiders of course demands that you play with the keyboard, never mind all the text adventures or even just games that require that you type your name.

    The mappings in lr-atari800 are:

    L3 NA
    R3 NA

    So you do in theory have two keys free where you could put a couple more mappings without stomping something else. I haven't tried this, but you could go to the RGUI (Select-X) and mapping L3 and R3 to the extra keys you need, and then saving a Game Remap file (not a Core Remap, as that will map those keys for all games). But I haven't tried this to see if it works with the lr-atari800 core.

    You're almost certainly still going to need a keyboard attached for a lot of games.

  • Excited about this, but confused about one section.

    I downloaded the script and placed it in the folder as described, but this is a new file that never existed previously, so nothing is calling/referencing this file.
    So if I launch lr-atari800 or any of the new emulator options, there is nothing (I don't believe) referencing the script.

    Is there a missing step somewhere?

    I do have runcommand.cfg and runcommand-launch-dialog.cfg in the "all" folder. Not sure how this script is actually called.


  • I see now that runcommand is supposed to automatically launch if it exists. I added a line to the script to output a text string to /dev/shm/runcommand.log, but it doesn't appear. I don't think is actually running.

    I'm running the unsupported Buster version of Retropie, so maybe I stumbled on something funky. Will keep playing with this.

    EDIT: I didn't change anything, but the script is suddenly working and I can see my custom string in runcommand.log. Excellent. Will tinker with my ROM filenames and see if I could get this to work.

  • @roslof Hope you got it working! Apologies, I have been busy and not visiting the forum.

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