Before You Buy
The SidecarTridge TOS 256KB decoder is designed to work ONLY with specific Atari ST and MegaST models and motherboards. There are different versions of the device to accommodate various motherboard configurations.
Please follow these steps before purchasing the emulator:
Check Your Atari ST Motherboard Model
To learn more about your Atari ST motherboard model, open the case and look for the model number printed on the board, usually located in the middle bottom of the motherboard. Refer to the Compatibility section for a list of supported motherboards. If your motherboard model is not listed, please contact us for further assistance. If your motherboard model number is listed, proceed to the next step.
For example:
An Atari ST motherboard model number might look like this: 
Dual or Hexa ROM Configuration
While the SidecarTridge TOS 256KB decoder supports both dual and hexa ROM configurations, however, there is no support for the 6 (HEXA) ROM configuration. The reason for this is pure economics. If you want to use the SidecarTridge TOS 256KB decoder with a hexa ROM configuration, contact us for a custom solution, but assume a 20% increase in price over the dual ROM configuration.
ROMs Plugged or Soldered
If your ROMs are plugged, congratulations, you can proceed with the purchase. If they are soldered, you will need to desolder them and plug them into sockets.
If you are not comfortable with desoldering and soldering, please seek professional help to avoid damaging your Atari ST motherboard. We strongly recommend using an experienced technician to perform this task.
Purchase the Right SidecarTridge TOS 256KB Decoder Kit
Once you have verified the compatibility of your Atari ST motherboard, you can proceed to purchase the appropriate SidecarTridge TOS 256KB Decoder emulator kit. Ensure you select the correct kit based on your motherboard model number and the number of ROMs.
| Kit | Supported Motherboards |
|---|---|
| STF and STFM Kit | 070789-001, C103175-001, C103414-001 |
| Mega ST Kit | C103544-001, C100167 |