Questions tagged [jupiter-ace]

The Jupiter Ace and Jupiter Ace 4000 were computers developed in the UK and sold in the early 1980s. They were based on the z80 CPU and had the FORTH language in ROM.

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What would be the value on the data bus for a Jupiter ACE with the Z80 Interrupt Mode 2?

I am writing an emulator for the Jupiter ACE. I assumed the idle bus value would be 0xFF like the ZX Spectrum. Other emulators for the Jupiter ACE seem to assume the same. If there are no peripherals ...
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Was the Jupiter Ace computer ever sold by Radio Shack in the USA?

One answer is yes; I personally remember seeing it for sale at a Radio Shack store in Texas or California. In fact, I almost bought one. The Jupiter Ace was a British computer with the Forth language ...