Atari released a series of 8 bit computers (400, 800, 1200XL, 600XL, 800XL, 130XE, 65XE, 800XE, and XEGS) and a video game console known as the Atari 5200 from 1979 to 1992
These emulators emulate the Atari 8 bit family: 400, 800, 1200XL, 600XL, 800XL, 130XE, XEGS and the Atari 5200. This can be one of the more tricky emulators to get set up as they require a multiplicity of BIOS files and configurations depending on what systems you want to utilise but it seems to run Atari 5200 games pretty well.
Atari800 is currently a port of version 4.1.0, whereas lr-Atari800 is based on version 3.1.0. Because of this, setup is substantially similar, with some differences. The lr-Atari800 core is currently the default in Retropie.
ROMS
Accepted File Extensions: .a52 .bas .bin .car .xex .atr .xfd .dcm .atr.gz .xfd.gz
Place your Atari 400,800, ROMS in
Place your Atari 5200 ROMS in
BIOS
There are 5 main BIOS needed for the Atari800 emulator:
See Advanced Config below for other alternate BIOSes which may be required to run certain software.
Place these files in
Once you have your ROMS and your BIOS files where they belong there is one more step of configuration needed where you tell the emulator where to look for your BIOS files. It varies based on the emulator, so look below to those sections for instructions.
Atari 5200 setup
In both emulators, the atari.cfg file is shared between Atari computers and the 5200. In lr-atari800, the core options likewise apply to both by default. However, for either emulator, if you have a core options file in your atari5200 directory, it will let you have separate settings for just the 5200 system.
Make sure you have a file called /opt/retropie/configs/atari5200/retroarch-core-options.cfg with this in it:
See 'Advanced Config' for solutions to problems booting 5200 games.
Emulator: lr-atari800BIOS setup
Make sure you have the appropriate system files in RetroArch's system directory:
Then, load a content file. The Atari800 core should boot to the 'Atari Computer - Memo Pad' screen.
The Atari800 core will generate a '.atari800.cfg' config file in RetroArch's home directory and will add the required BIOS files it detects in the system directory to the config file.
Now you can manually select what Atari system you want to emulate through the 'Atari System' core option.
Finally, you can load any content files compatible with the system chosen through RetroArch's Load Content menu.
Alternatively, you can manually configure how the Atari800 will look for and handle BIOS files. While the Atari800 core is running, you can press F1 to get into the internal emulator menu. From there, You can go to the 'Emulator Configuration' section and then the System ROM Settings section to configure BIOS options. (Press Enter to confirm menu selections and press Escape to go back a menu).
Then press Escape a few times to go back to the 'Emulator Configuration' section and select Save Configuration File or alternatively change Save configuration file on exit from no to yes.
Then you can exit the emulator by pressing F9 and then try the game again or press Shift+F5 to reboot the game.
You can set per-game core option settings by creating a game-options file through RetroArch's Core Options menu.
Options
The Atari800 core has the following options that can be tweaked from the core options menu. The default setting is bolded. Settings with (Restart) means that core has to be closed for the new setting to be applied on next launch.
Controllers
Device types
The Atari800 core supports the following device type(s) in the controls menu, bolded device types are the default for the specified user(s):
User 1 - 2 device types
Controller tables
Joypad and analog device type table
Keyboard device type table
See the section below for Atari800 keyboard controls, they are the same.
Known issues with lr-atari800
Note that any option settable in the RGUI will override the atari.cfg config file. Numerous options are only settable via the emulator menu.
Emulator: Atari800BIOS setup
Navigate to either the Atari 800 or Atari 5200 system on emulationstation and choose a game. Either a screen will open up with a bunch of different cartridge options, or the game will crash. If you are playing a 5200 game then choose a 5200 cartridge option (Option #5 seems to work). You will then get a warning telling you that it needs a real Atari OS. (You need to legally own the 5200 hardware to have the BIOS). Then press F1 to open the menu and navigate down to 'Emulator Configuration' and press enter. Then navigate down to System ROM Settings and then press Enter (Quick hint: use the escape button to go back up a step in the GUI).
The easiest option is to just select 'Find ROM images in a directory' then navigate into the BIOS directory and press the space bar. If you have the right files and file names it should automatically place the BIOS files where they belong.
Alternatively you can configure them manually:
For 400/800:
For XL/XE:
For 5200:
For BASIC:
Then press escape a few times to go back to the 'Emulator Settings' and select Save Configuration File or alternatively change Save configuration file on exit from no to yes.
Then you can exit the emulator by pressing F9 and then try the game again or press shift+F5 to reboot the game.
If you can't seem to make it work that way, once you have tried to start a game and use F9 to exit the emulator a file called .atari800.cfg will be created in the /home/pi directory.
This is a verified working .atari800.cfg file
ControlsQuick Tips for Gameplay:Troubleshooting
Typical file formats
Note that the emulators let you fully manipulate disks! You can accidentally reformat your rom, and it will look the same from the outside. Many games require you to have a blank disk to save player state on. Don't mess up and save your player file over the game! Similarly, quite a lot of 'player disks' and 'scenario disks' and the like out there actually have people's saved games on them.
Advanced ConfigBASIC and games
The Atari 400 and 800 systems ran a Memo Pad when you turned the machine on without loading a program or having a cartridge inserted. The BASIC cart was packed into the box. All the XL and XE models came with BASIC built into the machine. This meant that when booting the system, you had to tell the machine 'the BASIC cart isn't actually plugged in' whenever you wanted to load anything else. This was accomplished by holding down the Option key while booting. If you didn't load anything, you ended up instead in a self-test mode. Lastly, carts always disabled BASIC automatically.
Most games you will find for the Atari are machine language, and require that BASIC be disabled. See this thread
Booting Atari 5200 cartridges
Often when you boot an Atari 5200 game, it gets stuck at the Atari logo, or just crashes, or it asks you to specify a cart type. There's a bunch of kinds, and they all have to do with how much memory was embedded in the cart, and how many chips that memory was using, and what order the banks were in, etc. There is supposed to be a header on the cart that tells the machine how to interpret it, but lots of cart dumps don't have the header.
The emulator, though, has the facility to create carts, and this can add the missing header back in. Then you'll never see this menu again. Do this by going to the emulator menu (F1), Cartridge Management, Extract ROM from cartridge, save it, then Create Cartridge from ROM image, and select the file you just created. You will be asked which cart type to use. A handy list gathered by forum members is here: https://retropie.org.uk/forum/topic/16556/cartridge-type-code-list-for-atari-5200-games. Be sure to test after making your choice; if it doesn't work, just try another one. Go through the entire 5200 library (it's not that big!) and you'll never get the choose cart menu again. Be sure to have a backup of all your 5200 roms, of course.
Missile Command and Gorf on the 5200
Don't expect Missile Command, Gorf, and other games that use analog absolute position to work correctly with your controller. Both emulators mimic this analog controls using a mouse, and this may not work well in either core.
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Artifacting
High resolution graphics mode on Atari 8-bits was a one-color, two luminance mode. You could have one color for the background, and the same color at a different brightness for the pixels drawn. However, similar to the Apple II, the Atari supported what is called artifacting. This is a literal 'artifact,' a graphical glitch, caused by the way the chroma circuits in the original hardware worked.
If artifacting is turned off, many games which ought to be in color will appear in black and white. Among them are games like Lode Runner, Drol, A.E., most pinball games, and many others.
On the other hand, because of the way artifacting is implemented in the emulators, turning it on for all games will make text harder to read and many graphics not look crisp in games that no hi-res mode.
See this thread for an exhaustive discussion of artifacting with many screenshot examples.
Atari 800
To get the best artifacting results, press F1 for the emulator menu. Go to Display Settings. Select 'Full NTSC filter' for the artifacting. Under NTSC filter settings, set Burst Mode at one of -1, -0.5, 0.5, or 1 (or adjust to taste).
lr-atari800
NTSC filters do not work in this emulator. Retroarch will default to 'Old artifacts.' No other choices will render correctly, but you can use the F1 menu to switch between four different versions of artifacts which will give different colors. As a rule of thumb, you'll find that most games are either mode 1 or GTIA.
Automatic handling of BASIC games and artifacting
If you are using lr-atari800, there is a runcommand-onstart script that will
See the script in this thread.
Other BIOSes and BASIC versions
While the five BIOS files listed above will deal with 99% of the software you likely want to run, both versions of the emulator support many alternate versions, some of which permit loading software that would otherwise crash or run in graphically distorted form.
The following table gives the other BIOS checksums accepted by the emulators. These can be manually set in
which is also symlinked from
by adding the full path to the relevant line. Alternatively, you can use the emulator's internal menu. In lr-atari800, this can be reached via F1 or the R button; in Atari800 you can reach it via F1. Navigate to Emulator Configuration > System ROM Settings. Place all the BIOS files in
and select Find ROM Images in a Directory. The emulator will find all BIOS files that match these, regardless of their filename. (Info drawn from Peter Dell's Atari ROM Checker website).
In addition, custom BIOSes can also be loaded; in fact, the default recommendation for an OS B BIOS is actually a hacked version from the PCXFormer emulator.
There are three different versions of BASIC. Some BASIC software requires OS A and Rev. A BASIC; this is usually noted in the filename as [OSa]. The vast majority of the time, you will want Rev. C.
There are two possible BIOSes for the Atari 5200.
In Atari800, you can select which of these to boot into using command line switches.
In lr-atari800, Retroarch has hardcoded these choices into the Options menu. These are saved in
where the options are
and the option line is
Note that since core options override the emulator's own config file, but Retroarch doesn't cover all the sub-options, you can set different versions of BASIC or different BIOSes for the supported systems via the emulator menu.
Posted by3 years ago
Archived
Hi all
On latest version of RetroPie and I have had terrible success rates getting 5200 games to work. I have the BIOS files and they are in the correct directory with the other BIOS files, but I can hardly get any games to work.
Never know which 'cartridge' selection to pick from the emulator GUI when you launch a game. For several games I've tried all options. If I get past that either I get black screen or it goes back to Emulation Station.
2600, 7800 and Lynx games work great but I am pretty sure those use libretro emulations and 5200 definitely does not.
If you have your 5200 setup up and working I'd be interested in how you have it configured
Thanks!
3 comments
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Welcome to emuparadise.org's BIOS section. Over here, we have a great selection of BIOS files for people who are trying to emulate and need a BIOS to get through. The BIOS's come in handy when you need to use one with an emulator, so you can look to this section for all your BIOS needs!! (Note: They also come in VERY handy for development purposes!)
Unfortunately all links to bios files have been removed. Find out more
Atari 5200 Bios Retropie
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