BackBit Pro Cartridge Adapter

$5.00$29.00 USD

Add functionality to your BackBit Pro cartridge! Choose a specific system from the drop-down menu.

The adapters come fully assembled, but if you would like a cheaper option, I do have a DIY version available.

Note: Requires a BackBit Pro Cartridge to plug into.

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The BackBit Pro Cartridge is a universal instant loading cartridge capable of interfacing with multiple vintage computers via system-specific adapters. All adapters with male edge connectors have immersion gold fingers.

Some adapters can be ordered in different configurations. For instance:

  • The Commodore 64/128 adapter comes in a straight and right angle variety. Straight is the most versatile, as it supports vertical slots (like the SX64 & C64GS), and it can stay attached when you open up a breadbin. But right angle is a fashionable option if you want the person over your shoulder to see the cartridge, or you remove the SD card often.
  • The VIC 20, Tandy CoCo, and TI-99/4A adapters have adapter cases as an option, as insertion can be fussy.
  • The Sega Master System adapter comes in 3 flavors: US, Japanese, and Expansion Port. The US and Expansion port versions have a built-in reset, while the Japanese requires a wire. The SG-1000 machine requires the Japanese adapter, while both the US and Japanese Master System support the expansion port. However, game compatibility is not 100% with the expansion port version.

Some adapters have advanced features:

  • Aquarius has a built-in Mini Expander via a coprocessor;
  • Amstrad CPC+/GX4000 has a chip for ACID protection bypass;
  • Atari 5200 has circuitry to utilize a cartridge interlock reset mechanism. If you have an older 4-port system that has not been upgraded, you can instead use a solderless reset jumper;
  • Atari 7800 has POKEY emulation via a coprocessor;
  • Fairchild Channel F comes attached to a caddy, since insertion would not be possible otherwise;
  • Magnavox Odyssey² has The Voice emulation via a 3.5mm output (must extract this file in your SD card’s root);
  • MSX has SCC emualtion via a coprocessor;
  • TI-99/4A has an electrically switched reset;
  • ZX Spectrum and Timex Sinclair 2068 adapters have a Kempston joystick port to hook up an Atari style joystick.

The following adapters include a solderless jumper (one jumper is included, and extra jumpers can be purchased):

  • Amstrad CPC+/GX4000 (required for ACID bypass);
  • APF M1000/MP1000 (optional for 1-button reset);
  • Atari 2600 (optional for reset capability);
  • Atari 5200 (optional for reset capability on early 4-port models; not required on 2-port models or “universal” 4-port models);
  • Atari 7800 (optional for reset capability);
  • Atari 400/800/XL/XE (optional for 1-button reset);
  • Bally Astrocade (optional for power if not using USB-C);
  • Colecovision/Adam (optional for 1-button reset);
  • Emerson Arcadia 2001 (optional for 1-button reset);
  • Magnavox Odyssey² (optional for 1-button reset);
  • RCA Studio II (optional for 1-button reset);
  • Sega SG-1000/SMS Japanese (optional for reset capability);
  • Vectrex (optional for 1-button reset).

See the BackBit Pro Cartridge page for more details.

Additional information

Weight 2 oz
Dimensions 1 × 1 × 1 in

Acetronic MPU, Amstrad CPC+/GX4000, APF M1000/MP1000, Apple II+/IIe/IIgs Slot, Atari 2600, Atari 5200, Atari 7800 (w/ POKEY), Atari 400/800/XL/XE, Bally Astrocade (w/ USB-C option), Commodore 16/+4, Commodore 64/128 (straight), Commodore 64/128 (right angle), Commodore VIC 20 (w/ case), ColecoVision/Adam, Emerson Arcadia 2001, Epoch Super Cassette Vision, Fairchild Channel F (w/ caddy), IBM PCjr, Interton VC 4000, Magnavox Odyssey² (w/ The Voice), Mattel Aquarius (w/ Expander), Mattel Intellivision, MSX 1/2 (w/ SCC), RCA Studio II/III, Sega Master System, Sega SG-1000/SMS Japanese, Sega Master System (Expansion Port), Sinclair ZX81 / Timex Sinclair 1000, Soundic MPT-03, Tandy Color Computer/2/3 (w/ case), TI-99/4A (w/ case), Timex Sinclair 2068 (w/ Kempston), Tomy Tutor/Pyuuta, Vectrex, ZX Spectrum (w/ Kempston), Extra secure jumper clips (set of 3)


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