Board revisions 1 and 2
The first SidecarTridge TOS Emulator boards, shipped until mid June 2025. Their final firmware is v2.1.0: they cannot run firmware v4.x.
Final firmware
RP2040 microcontroller, firmware v2.1.0. Shipped until mid June 2025.
Your ROM Emulator board, on top of the carrier board, is this one if:
- A slim board mounted on the carrier with a short pin header.
- No red power LED.
- Its firmware drive (BOOTSEL mode) is called
RPI-RP2.
Read the guides in this order
- Getting Started Setting up the board with firmware v2.1.0, copying TOS images, and updating the firmware.
- Hardware Installation Opening your Atari and fitting the board.
- User Guide The SWITCHER and rescue mode, day to day.
Archived guides for firmware v1.0
For every board
Compatibility lists the TOS versions and computers tested, the FAQ answers the most common questions, and the Changelog has what changed in each firmware.