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    I’ve been curious about this computer for some years, and bid on one some time ago, but at more than 600 € that was more than I was going to pay for it.

    As far as I know, the machine is internally the same as the PB-2000C which I do have, just with different key labels and a different ROM. There is an emulator for Windows here: https://pockemul.com/

    There is even a Prolog ROM, but again for me it’s not worth the going prices: https://www.casio880.com/categoria_productos/casio/ai-1000/

    I wanted to build myself a modern version of this based on the Planet Computers Gemini (https://www.www3.planetcom.co.uk/gemini-pda) which in theory can run Linux, but I’ve had so much trouble with it (running Linux) that I had to postpone it until I can find some time again.

    Edit: the video description includes several interesting links including Pocket Emul.

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      I’ve got the Prolog ROM for it. It works, though you won’t be doing any large projects in any language on it. But it’s fun to play with.