• Kit for the 520ST+, STM, STF, STFM and Mega ST: ROM Emulator board revision 4 on the universal ST/STF/STFM carrier board, with the HI board on a flat cable
  • Two TOS Emulator kits with ROM Emulator board revision 4: the universal ST/STF/STFM carrier board with its HI board on a flat cable, and the STE carrier board
  • ROM Emulator board revision 4 (RP2350B), the board in every kit
  • TOS Emulator installed in a Mega ST
  • TOS Emulator installed on an STF/STFM motherboard C070789
  • TOS Emulator installed in an STE
  • TOS Emulator installed on a 520ST+/STM motherboard C070243
  • SWITCHER, the TOS picker you run on the Atari
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SidecarTridge® TOS Emulator for Atari ST/E and MegaST/STE

SidecarTridge® TOS Emulator for Atari ST/E and MegaST/STE

€59,90 EUR
€59,90 EUR
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Taxes included for EU only (see banner). Shipping calculated at checkout.

Hot-swap TOS versions on your Atari ST

The SidecarTridge TOS Emulator replaces the ROM chips inside your Atari ST, STE, Mega ST or Mega STE with a programmable board. Store up to 64 TOS images and switch between them from the SWITCHER menu, without opening the case again. Every kit ships with ROM Emulator board revision 4 (RP2350B) and firmware v4.0.0.

Full product page: features, compatibility, installation and FAQ ↗

Find your kit

  • ST+ and STM Kit C070243: 520ST+, 520STM.
  • STF and STFM Kit C070789 C070859 C103175 C103414, 2 ROMs or 6 ROMs: 520STFM, 1040STF, 1040STFM. Count the ROM chips on your motherboard.
  • STE Kit: 520STE, 1040STE.
  • Mega ST Kit: Mega ST1, ST2, ST4.
  • Mega STE Kit: Mega STE.

Read the motherboard number on the silkscreen and check the buying guide before ordering. Motherboard C070523 has no kit of its own: read the C070523 notes. Want 256 KB TOS on a Mega ST? Get the 256KB Decoder + TOS Emulator Combo.

Key features

  • Up to 64 TOS images in about 15 MB of ROM space. EmuTOS ships pre-installed.
  • More than TOS: MagiC 6.30 with the MagiC ROM Builder, or a Macintosh Plus with Jackintosh.
  • SWITCHER on the Atari to pick, upload and delete ROMs, or a USB drive on Windows, macOS or Linux.
  • Rescue with the RESET button: hold it while you switch on to start the rescue image.
  • Fits inside the case, in the original ROM sockets. Works on the Mega STE at 8 and 16 MHz with cache.

Good to know

  • Socketed ROMs install with no soldering. Soldered ROMs have to be removed and sockets fitted first.
  • Supported on stock machines only (the standard Mega ST Blitter patch is fine). Accelerators, memory expansions and other mods are out of scope: contact us first.
  • TOS is copyrighted: own a legal copy. Jackintosh needs your own Macintosh Plus ROM.
  • Have a board revision 3? It runs firmware v4.0.0 too: Upgrading to v4.0.0.

Kit content

More on the TOS Emulator product page and in the quickstart guide.

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r
richard vaughan

The ‘TOS Emulator is extremely awesome and i love it. I had a few difficulties getting it to stay seated in the low socket but sorted it in the end by slightly wedging it under shieldI also drilled and filled Rescue Switch. The high end on my Atari 1040 STFM was close to shorting on shield but insulated the metal and slightly cut down excessive chip legs on top of device. All Is Working amazing and so easy to use, would definitely recommend. Great work SideCart

richard vaughan review photo richard vaughan review photo
M
Marco

Funzionale e utile!