Welcome to the Atari ST/STE/MegaST/MegaSTE/Falcon/TT ImpoSTer Order Form


Here you'll find details on what to order for your ImpoSTer setup.

Please read the disclaimer below. Ensure you understand the implications of plugging the device into your system.

Warranty Disclaimer

THESE PRODUCTS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THESE PRODUCTS OR THE USE OR OTHER DEALINGS IN THESE PRODUCTS.



The ImpoSTer adapter is a keyboard/mouse emulator for the Atari ST/STE/MegaST/MegaSTE/TT and Falcon computers. It plugs into the keyboard port of the Atari and has a passthrough port for attaching the original keyboard. The ImpoSTer also features two DB9 joystick ports, with port0 being able to use both joystick and original Atari mice. It also has two USB ports for keyboard/mouse and USB hubs.

The ImpoSTer also can attach to a PC and allow an Atari Keyboard/Mouse/Joysticks to be used on a PC. In this mode the Atari computer connection is disabled, and the side mini-USB port is used to plug into the PC.

The mini-USB port by default is used for power. A jumper on the ImpoSTer can be added so that the Atari can power the ImpoSTer, but attention should be paid to the current draw that is consumed by the USB devices.

NOTE: The mini-USB port is shared with the top most USB-A port. If you are powering the device from the mini-USB port, ensure that only power is provided, and not a data connection as this can conflict with the top USB-A port.

The software for the ImpoSTer is still UNDER DEVELOPMENT, so any problems please contact me for future firmware updates.

Any questions, please contact me.

NOTE: If there are any questions on the operation of the board, please use the Atari Forum so others can benefit from the answers. Thanks !!

Documentation is here inside, side, front

You can download the latest firmware for Atari TOS by clicking here

You can download the latest firmware for Linux x86-64 by clicking here


Item Description Price Buy
Atari ST/STE/MegaST/MegaSTE/TT/Falcon ImpoSTer Adapter. £30.00
ImpoSTer case, LCD option (colour may vary) £15.00  
ImpoSTer enclosed case, no LCD option (colour may vary) £15.00  
ImpoSTer LCD £20.00  
ImpoSTer cable for Atari's with RJ11 connections, i.e. Megas £4.00
ImpoSTer internal cable for Atari STE/STFM/Falcon £4.00
Shipping charge - UK only(single quantity - please email for multiple shipping quote) £10.00
Shipping charge - Worldwide (single quantity - please email for multiple shipping quote) £18.00