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Atari ST-STE-TT-Falcon


The Atari ST, STE, TT, and Falcon were a series of personal computers released by Atari starting in 1985.

Emulator Rom Folder Extension BIOS Controller Config
Hatari atarist .st .stx .msa .img .rom .raw .ipf .ctr TOS 1.00, 1.02, 1.04, or 2.06 (ST)
TOS 1.xx or 2.xx (STE)
TOS 3.0x (TT)
TOS 4.0x (Falcon)
lr-hatari atarist .st .stx .msa .img .rom .raw .ipf .ctr .zip .m3u TOS 1.00, 1.02, 1.04, or 2.06 (ST)
TOS 1.xx or 2.xx (STE)
TOS 3.0x (TT)
TOS 4.0x (Falcon)
Retroarch config

Much of the emulation for later models, such as the Falcon, is still experimental so some games may be hit and miss.

Emulator: lr-hatari

lr-hatari can currently be found under the experimental installs in RetroPie.


TOS (The Operating System; also Tramiel Operating System, from Jack Tramiel, owner of Atari Corp. at the time) is the operating system of the Atari ST range of computers. Atari's TOS was usually run from ROM chips contained in the computer. See

To use this core you need a valid TOS ROM image named 'tos.img' in your RetroArch system directory:


For compatibility purposes it may also help to put the file in this folder:


Using a Version 1.04 TOS file is also a good choice for general compatibility.


Accepted File Extensions: .st .stx .msa .img .rom .raw .ipf .ctr .m3u .zip

Unlike the standalone Hatari, lr-hatari supports .m3u files and .zip files.

Place your Atari ST/STE/TT/Falcon ROMS in


Disk images

The Atari ST was a disk based computer so you need a disk image of the software you want to use with the emulator.

Accepted File Extensions: .st .msa .ipf

When launched with a valid disk image the emulator will automatically launch the program (most of the time) or open the TOS with disk inserted into drive A. In the TOS you need to manually launch the program by opening Drive A (double-click on the drive icon) and finding/selecting a .prg file (double-click on the file icon).

Note that certain global retroarch configurations can cause crashes with the emulator - If this appears to be happening (i.e. The emulator crashes back to emulationstation when loading .st files), try placing a factory-set retroarch.cfg file into the directory below:


This will over-ride the global retroarch configuration and should allow access to the emulator to configure the controls for the system specifically.

M3U Support and Disk control

When you have a multi disk game, you can use a m3u file to specify each disk of the game and change them from the RetroArch Disk control interface.

A M3U file is a simple text file with one disk per line (see


Simpsons, The - Bart vs. The Space Mutants.m3u

Simpsons, The - Bart vs. The Space
Simpsons, The - Bart vs. The Space

Path can be absolute or relative to the location of the M3U file.

When a game asks for it, you can change the current disk in the RetroArch 'Disk Control' menu :

Eject the current disk with 'Disk Cycle Tray Status'.
Select the right disk index.
Insert the new disk with 'Disk Cycle Tray Status'.

Note : zip support is provided by RetroArch and is done before passing the game to the core. So, when using a m3u file, the specified disk image must be uncompressed (.st, .msa, .ipf file formats).

It may be necessary to add .m3u as a supported file format to the Atari ST section of:


In order to be able to see the created m3u files directly in emulationstation.

Default Controls

lr-hatari uses Retroarch control configuration. The mouse is emulated by the joystick and can be toggled between mouse and joystick modes. The libretro port of Hatari also takes some settings from


If you are experiencing joystick issues, it may be helpful to check that the joystick setup in hatari.cfg is correct. To do this, launch a ROM with the standard Hatari (non-libretro version), launch the GUI and check that all joystick mappings are correct. Save the configuration settings and then reload lr-Hatari afterwards.

Button Command
Left Joystick Up, down, left, right
L2 Show/Hide status
R2 Sound on/off
L Toggle Num Joy
R Change Mouse speed 1 to 6 (for gui and emu)
SEL Toggle Mouse/Joy mode
STR Show/Hide virtual keyboard
A Fire/Mouse button A / press key in virtual keyboard
B Mouse button B
Y lr-hatari GUI

Note that some games (e.g. Gauntlet II) require the simulation of the 'plugging-in' of a joystick. This can be done from the standard hatari gui by selecting 'disabled' followed by 'enabled' in the joysticks tab. However, this type of behaviour is not currently supported in lr-hatari as the retroarch pads are set up permanently at launch.

Furthermore, there is no current mapping of the space bar to a joystick button in lr-hatari as there is in the 'standard' version - this must currently be done using the on-screen keyboard.

Emulator: Hatari


Accepted File Extensions: .st .stx .msa .img .rom .raw .ipf .ctr

Place your Atari ST/STE/TT/Falcon ROMS in



While in game press F12 to open the Hatari main menu, to reconfigure controls select either joysticks or keyboards

Default Keyboard Controls:

Up: up
Down: down
Left: left
Right: right
to exit the emulator you can use alt+q or select quit from the F12 menu