CV / ADAM ACCESSORIES

A complete line of protective covers for the ColecoVision.

A complete line of protective covers for the ColecoVision & ADAM Computer systems. Each unit cover was sold separately.

Allows for use of multiple joystick types on the ColecoVision & ADAM Consoles.

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The RAMBOard will allow you to have 32k of RAM on your ColecoVision instead of the standard 1k. This extra RAM will allow you to play many of the upcoming 8 Bit Milli games as well as allow you to play any game that requires a Super Game Module but will run on a Coleco Adam without the Super Game Module. Many games that require a Super Game Module only require the 32k of RAM that it contains and does not check for the presence of the AY sound chip. The rule of thumb is, if the game will play on a Coleco Adam without a Super Game Module attached you can use the RAMBOard to play the same games on the ColecoVision. The RAMBOard does NOT contain a sound chip so you will not be able to hear the sound from these games unless they use the built in ColecoVision sound chip but you can play them.

Play ColecoVision games in your JAMMA cabinet. Can be combined with multicarts to play hundreds of games

Upgrade your ColecoVision with true RGB video output and select up to three different Bios types. Can be combined with converters for VGA or HDMI output.

Upgrade your ColecoVision with true RGB video output. Can be combined with converters for VGA or HDMI output.

Includes:
• Daisy wheels in three popular typefaces
Emphasis -A large, bold type style. Useful for presentations or to help children master reading.
Courier 72 -A bold, professional typeface, used with many business typewriters.
Pica 10 - The most popular typeface for home electric typewriters.
• Replacement film ribbon cartridge
• Tape head cleaner
• Blank digital data pack
#7816

This ADAMnet to Coleco printer adapter with reset silence switch is used to test or use a factory printer while using a modified console with an internal or external power supply.

Coleco USB mouse/joystick adapter with ribbon splitter cable and Mini-B USB cable for power and software updates. Includes support for third party NES and SNES USB joypads

This Ultimate ADAM External Power Supply bypasses the factory printer power supply to power your ADAM console. It is built from top quality parts with attention to all details for reliability, safety, and looks.

The Coleco ADAM Sound Enhancer plugs into the Expansion Port on the ADAM computer. This revised board now comes with a case and a 3.5mm line out jack and allows the ADAM to play most SGM (Super Game Module) cartridges.

The pause button Coleco never built — by Video Additions, Inc.

The ColecoVision launched in 1982 with no system-wide pause. Some cartridges built pause into their own code (a * or # keypad press), but many didn't — if the phone rang mid-game, your only choices were to die on purpose or leave the console running. Video Additions, Inc. saw the gap and built the Add-A-Halt.

The device plugs into the ColecoVision's front Expansion Module Interface via a card-edge connector. On its face: a red HALTED indicator LED, a two-position HALT / RUN toggle, and the Video Additions name badge. Flip to HALT and the game freezes on the exact frame; flip back to RUN and play continues. Universal, hardware-level pause that works on every cartridge — because it never relies on the cartridge to cooperate.

How it works: the ColecoVision runs on a Zilog Z80A at 3.58 MHz. When the Z80's clock is stopped or its WAIT line is held active, the CPU preserves its complete internal state — registers, program counter, and the paused TMS9928A video refresh all hold, then resume exactly where they left off. The Add-A-Halt simply drives that control line through the toggle switch: no processor mod, no cartridge mod, no software involvement. Just a switch, an LED, some wire, and knowledge of the Z80.

One endearing quirk: because the halt happens at the CPU clock level and doesn't touch the SN76489 sound chip's state, a halt thrown mid-note leaves that one tone buzzing endlessly — the picture freezes silently except for a single held note until you flip back to RUN.

A surviving period print ad shows the unit with the tag line “A real show-stopper,” promising it will “let you freeze the game action until you are ready to start again.” It confirms the Add-A-Halt reached market as a commercial product, not a prototype. Yet surviving units almost never surface, and Video Additions, Inc. left behind no other product line — the trademark was never formally registered in U.S. or Canadian databases, pointing to a small, short-lived operation that made this one clever accessory and moved on.

Have one? If you own an Add-A-Halt — or, better yet, the ad in its original magazine or newsletter context — the ColecoVision preservation community would love to see it. Documenting the publication and issue date would fill in one of the last unknowns about this obscure but genuinely inventive third-party accessory.

A 2026 one-off reproduction of the Video Additions original — by John Lundy, Lundy Electronics. One built to date: the SN#001 prototype, which remains in Lundy's possession.

With original Add-A-Halt units almost never surfacing, John Lundy built a faithful working reproduction for the fun of it. The case came from a quick modification of his speech synthesizer CAD file, printed fresh; the board is a modified speech synthesizer PCB with an area cut out to clear the SPDT toggle; and the face is a metalized label finished with clear spray protection. It plugs into the ColecoVision's front Expansion Module Interface just like the original — red HALTED lamp, HALT / RUN toggle, Video Additions badge and all — and, in his words, works like a champ.

Why it isn't a product: Lundy has been clear that the Redux is not headed to his store. The device occupies the expansion I/O port that most owners would rather give to a Super Game Module, and it inherits the original's most annoying quirk — the sound chip stays latched, so a note held at the moment of the halt buzzes until you flip back to RUN. He also notes it would undercut the Lundy Electronics Ultimate Pause Kit, which does mute the audio while the console is paused.

Only the SN#001 prototype exists at this time and it has not entered the museum's collection — it is documented here from Lundy's own build, catalogued as CVH-0233.