BackBit Pro Adapter for 8-Bit Systems

Description

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 variation. 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. For Channel F the case is required.
• 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 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;
• Bally Astrocade has a USB-C port for power (if not using light gun pin);
• BBC Micro has a RAM buffer to maintain signal integrity;
• Casio PV-1000 has a RAM buffer for video requests;
• Fairchild Channel F comes attached to a caddy, since insertion would not be possible otherwise (note that style & color may vary);
• Magnavox Odyssey² has The Voice emulation via a 3.5mm output (must extract this file in your SD card’s root);
• MSX has SCC emulation via a coprocessor;
• NEC PC-6001 has an on-board 16K RAM expansion;
• 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:

• Amstrad 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);
• Casio PV-1000 (optional for 1-button reset);
• Colecovision/Adam (optional for 1-button reset);
• CreatiVision/Dick Smith Wizzard (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.