BackBit Pro Cartridge (Backorder)

(5 customer reviews)

$129.00$139.00 USD

Please note that this is a backorder item. Parts are expected to arrive in 2023, but no specific estimate is available yet. Know that parts are already ordered and we are working hard to secure availability.

The BackBit Pro cartridge allows you to get the best use out of your vintage hardware. Individual adapters expand functionality to multiple devices. One adapter is included, and more adapters are available to purchase separately.

Watch my YouTube video series Evie’s Revue or visit the BackBit Forum for more details.



The BackBit Pro Cartridge is a universal instant loading cartridge capable of interfacing with multiple vintage computers via system-specific adapters, including:

  • Amstrad CPC+ / GX4000
  • Apple II+ / IIe
  • Atari 2600
  • Atari 5200
  • Atari 400 / 800 / XL / XE
  • Bally Astrocade / Professional Arcade / Computer System / Home Library Computer
  • ColecoVision/Adam
  • Commodore 16 / +4
  • Commodore 64 (incl. C128, C64C, SX64*, C64GS*, PAL & NTSC variants) *requires straight adapter
  • Commodore VIC 20
  • Epoch Super Cassette Vision
  • Magnavox Odyssey² / Philips Videopac
  • Mattel Aquarius
  • Mattel Intellivision
  • MSX 1 / 2
  • PCjr
  • Sinclair ZX81 / Timex Sinclair 1000 / Timex Sinclair 1500
  • Tandy Color Computer / 2 / 3
  • Timex Sinclair 2068
  • TI-99/4A
  • ZX Spectrum

Compared to other cartridges which only support a single system, BackBit Pro offers way more value!

Features common to all systems:

  • Just plug and play! All you have to do is insert the cartridge and adapter, and a MicroSD card full of programs (SD card not included, but inquire at BackBit Forum for content suggestion);
  • Upgradeable via MicroSD card (not included). Just place the upgrade file on the card and updating is instant & secure;
  • Easy to use menu system can be navigated via joystick or keyboard. Unified interface is common to all hardware;
  • BackButton™ allows for easy navigation back to menu interface (some systems, such as ColecoVision/Amstrad/Atari, require an included solderless jumper);
  • Loading is always instant*. No need to take a coffee break while your program is loading (*exceptions are programs which introduce their own delays);
  • Built-in versioning system preserves your original files (on systems/configurations that support saving);
  • Supports cartridge images up to 1MB in size;
  • Real-time-clock remembers date & time even after shutoff. Useful when creating new files or versions;
  • One-button diagnostic mode helps you identify system faults;
  • Sturdy 3D printed ABS case (some adapters also have optional adapter cases).

Features specific to Atari XL/XE:

  • Supports XEX, BIN & ROM formats (incl. Blizzard, Williams, XEGS, Mega up to 1MB, AtariMax up to 1MB, Bounty Bob);
  • Reset jumper can be wired into your machine to facilitate a one-button reset back to the menu. Solderless jumper is included (see documentation for full details).

Features specific to ColecoVision/Adam:

  • Supports Mega-Cart format, up to 1MB in size;
  • Reset jumper can be wired into your machine to facilitate a one-button reset back to the menu. Solderless jumper is included (see documentation for full details).

Features common to all Commodore machines:

  • Supports CRT,PRG,P00,T64,D64,D71,D80,D81,D82 file formats;
  • Supports virtual 1541/1571/1581 reading & writing of PRG/SEQ/REL/USR files via KERNAL vectors;
  • “Burn & Rip” features allows you to transfer files to or from physical floppy disks.

Features specific to Commodore 64/128:

  • 100% compatible with EasyFlash, Magic Desk, and Ocean cartridge images (among others);
  • Works in all 3 modes on Commodore 128, including CP/M;
  • Built-in SID player and Koala viewer (multicolor Koala only);
  • Built-in freezer to save program state (C64 prg files only);
  • KERNAL override if you have a PLAster chip (C64 longboard only);
  • Note that if you have a 326298 board (original rev C64 breadbin), it will require a reset fix.

Features specific to Commodore VIC 20:

  • Supports all known cartridge ROMs;
  • Up to 35K selectable RAM expansion.

Features specific to Mattel Aquarius:

  • Built-in 32KB RAM expansion.

Features specific to Mattel Intellivision

  • Supports ROM & BIN formats;
  • Automatically patches games to work on Intellivision II.

Features specific to Sinclair ZX81 / Timex Sinclair 1000:

  • Built-in 16KB RAM expansion.

Features specific to ZX Spectrum:

  • Built-in “Kempston”-style joystick port.

Additional information about adapters:

  • All adapters with male edge connectors are chamfered & have immersion gold fingers.
  • Bally Astrocade does not supply power via the expansion port, so a power pin is provided. It is also possible to mount a USB breakout module (soldering required).
  • ColecoVision/Adam, Amstrad CPC+/GX4000, Atari 400/800/XL/XE, and Magnavox Odyssey² do not have reset functionality built-in to the cartridge port. This means that you have to reset the system or cycle the power to get back to the file browser. For these systems, a solderless jumper is included which can be installed inside the machine to facilitate one-button reset back to the menu.
  • Tandy, TI-99/4A, and VIC-20 have oversized cartridge ports. To compensate for this and make insertion easier, optional adapter cases are available for these machines.


Additional information

Weight 4 oz
Case Option

Red, Black

Included Adapter

Adam/ColecoVision, Amstrad CPC+/GX4000, Apple II+/IIe, Atari 2600, Atari 5200, Atari 400/800/XL/XE, Bally Astrocade, Commodore 16/+4, Commodore 64/128 (straight), Commodore 64/128 (right angle), Commodore VIC 20 (no adapter case), Commodore VIC 20 (w/ adapter case), Epoch Super Cassette Vision, IBM PCjr, Magnavox Odyssey², Mattel Aquarius, Mattel Intellivision, MSX 1/2, Sinclair ZX81 / Timex Sinclair 1000, Tandy Color Computer/2/3 (no adapter case), Tandy Color Computer/2/3 (w/ adapter case), Timex Sinclair 2068 (w/ "Kempston" port), TI-99/4A (no adapter case), TI-99/4A (w/ adapter case), ZX Spectrum (w/ "Kempston" port)

5 reviews for BackBit Pro Cartridge (Backorder)

  1. Ben S

    The BackBit Cartridge for the Commodore 64 is a must-have item for any Commodore enthusiast. The BackBit supports thousands of games and programs. They can be easily loaded from the BackBit’s built-in menu system and launched, with most games loading in mere seconds.

    The BackBit also includes a reset button that can return the user to the menu system at any point, allowing you to resume where you left off.

    The cartridge supports almost all major image types (D64, D81, CRT, P00, PRG, etc), including its own proprietary format (BBT). Recent firmware upgrades have paved the way toward supporting more multidisk games (several multidisk games are already in the BackBit Collection available on the BackBit forums).

    You won’t find a better device for easily running software on the C64 using nothing more than a MicroSD card.

  2. Jeremy

    Awesome cart that makes the C64 Fast and Fun to use, it’s easy to set up and has great support compared with other options.

  3. Jari K

    Amazing device! Easy to use, superbly fast and reasonably compatible, and the constant firmware upgrades and support make BackBit an absolute joy and thrill to keep using. Also, with adapters around to make BackBit usable on increasingly varied machines, it’s an absolute must-have in any serious retrogamer’s collection of new gizmos. Sure, it doesn’t run cassette image files (TAP), but then that’s not the point of it. 😉

  4. Calen Palazzolo (verified owner)

    The Backbit Cart is frickin AWESOME!! It loads instantaneously and has more than met my expectations! So much faster than the other device I have. I ordered it on Sunday and it came a day early which was a nice surprise. I remember playing the C64 as a child in elementary school and remember the awful load times. There is no such thing as load times when it comes to this wonderful device. I can’t wait to play these games with my kids. Thank you Evie for making such a wonderful product.

  5. Darth Florus

    I’m a freaky of C128 and the Backbit have a excellent support of it. When a program don’t work forum support is awesome, in a days the program works on!. The “program api” is good enough to manage features of the backbit cartridge. The extended file can be used as a expanded memory or memory disk as you can program for use it. Is the first cartridge that allows me to use 4 CP/M disk images at once thanks of the custom BBT file format. With it, I use CP/M as never I used in all my live as C128 user. A must have cartridge for a C128 user!

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