Browser-based Jupiter Ace emulator and reference site, coming soon.
JupiterAceEmulator.com is an upcoming site focused on the Jupiter Ace: the distinctive 1982 home computer best known for using FORTH rather than BASIC. The full site is still being built, but this placeholder page is here so early visitors know they have reached the right place.
The plan is to combine a usable in-browser emulator with accessible background material, deeper technical notes, and curated software coverage, rather than leaving the emulator disconnected from the machine's history and design.
What this site will be
This will be a focused retro-computing site built around the Jupiter Ace itself, not just a bare emulator embed. The aim is to make it useful whether you already know the machine well or have only just discovered it via a search engine.
- A browser-based emulator designed for quick access and experimentation
- Historical background on the machine and its place in the early 1980s micro scene
- System architecture notes for readers who want more technical depth
- Coverage of software, homebrew, utilities, and notable releases
- A comparison page looking at the Jupiter Ace alongside the ZX81
Why there is a placeholder already
The domain has started appearing in search results earlier than expected, even before any deliberate promotion or indexing work. Rather than leave visitors with an empty or confusing destination, this temporary page confirms that the project is real and actively being developed.
If you found this site while searching for a Jupiter Ace emulator, you are in the right place. The full version should eventually provide both a practical emulator and a stronger contextual resource around the machine itself.
Planned sections
The exact structure may still change, but these are the main areas currently intended for the first proper version of the site.
Emulator
The main browser-based Jupiter Ace experience, including keyboard handling, reset behaviour, and software loading support where practical.
History
Background on the computer, the people behind it, and why the Jupiter Ace still stands out among early British micros.
System Architecture
A more technical look at the machine for visitors interested in hardware layout, design choices, and implementation detail.
Software and Homebrew
Highlights from original software, useful programs, and any interesting modern material that helps keep the platform alive.
Jupiter Ace vs ZX81
A practical comparison page for readers who know Sinclair's machine better and want quick context for what made the Ace different.
Resources
Useful links, references, archives, and other pointers for people who want to explore the Jupiter Ace beyond the site itself.
In the meantime
While the emulator is still under development, this domain is effectively acting as a holding page for the project. You may see sections appear gradually over time rather than all at once.
Any page that is not ready yet will eventually resolve properly once the site structure is in place. For now, the custom 404 page keeps unfinished or mistyped URLs on-brand rather than sending visitors to a generic host error page.