Jupiter II compatible system

A2Heaven's build-it-yourself recreation of the Jupiter Ace, with a revised video path, reset button, programmable video options, fewer logic chips, and additional expansion signals.

Also called: Jupiter Ace II, Jupiter II Kit, Jupiter Ace clone

At a glance

Products listed: 2

Exact-system evidence: 2

Family/interface evidence: 0

Product types: 2

Vintage searches: 0

Directory: Jupiter II

Browse everything below, or filter by product type, availability, and compatibility basis. Notes explain whether evidence names an exact target, a broader family, or only the relevant bus or interface for this compatible system.

Showing 2 products.

Status Product What it does Links

Status	Product	What it does	Links
Sold outChecked Jul 27, 2026	Jupiter II Expansion Kitby A2Heaven multifunction rgb 128kb paged memory forth serial kit soldering	Adds RGB color, programmable sound, paged memory, a Forth extension ROM, and serial I/O to the Jupiter II computer. For this compatible system (exact system): A2Heaven specifies this board for its Jupiter II computer. It is not documented as a plug-in upgrade for an original Jupiter Ace. The base computer and the expansion both require assembly. A2Heaven marked the expansion kit out of stock on 2026-07-27. The historical package included the expansion PCB, active and passive components, pre-mounted SMD parts, placement and schematic diagrams, documentation, and source material. The base Jupiter II computer was separate and also out of stock. Sources A2Heaven Jupiter II Expansion Kit page A2Heaven Jupiter Ace category	A2Heaven Jupiter II Expansion Kit page
Sold outChecked Jul 27, 2026	Jupiter II Kitby A2Heaven complete system forth replica composite video keyboard kit soldering	Recreates the Jupiter Ace as a complete soldering kit with revised video, reset, keyboard, and expansion hardware. For this compatible system (exact system): This is the compatible system itself. It is a soldering kit rather than an assembled computer. The design deliberately differs from an original Jupiter Ace in its video buffering and selection, reset circuit, screen and character memory options, PLD logic, and expansion signals. A2Heaven marked the kit out of stock on 2026-07-27. The historical package included the three PCBs, active and passive components, pre-mounted SMD parts, placement and schematic diagrams, documentation, and source material. No separate public fabrication download or current alternative seller was verified. Sources A2Heaven Jupiter Ace II kit page A2Heaven Jupiter Ace category	A2Heaven Jupiter Ace II kit page

Sold outChecked Jul 27, 2026

Jupiter II Expansion Kitby A2Heaven

Adds RGB color, programmable sound, paged memory, a Forth extension ROM, and serial I/O to the Jupiter II computer.

For this compatible system (exact system): A2Heaven specifies this board for its Jupiter II computer. It is not documented as a plug-in upgrade for an original Jupiter Ace. The base computer and the expansion both require assembly.

A2Heaven marked the expansion kit out of stock on 2026-07-27. The historical package included the expansion PCB, active and passive components, pre-mounted SMD parts, placement and schematic diagrams, documentation, and source material. The base Jupiter II computer was separate and also out of stock.

Sources

A2Heaven Jupiter II Expansion Kit page

Sold outChecked Jul 27, 2026

Jupiter II Kitby A2Heaven

Recreates the Jupiter Ace as a complete soldering kit with revised video, reset, keyboard, and expansion hardware.

For this compatible system (exact system): This is the compatible system itself. It is a soldering kit rather than an assembled computer. The design deliberately differs from an original Jupiter Ace in its video buffering and selection, reset circuit, screen and character memory options, PLD logic, and expansion signals.

A2Heaven marked the kit out of stock on 2026-07-27. The historical package included the three PCBs, active and passive components, pre-mounted SMD parts, placement and schematic diagrams, documentation, and source material. No separate public fabrication download or current alternative seller was verified.

Sources

A2Heaven Jupiter Ace II kit page