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ICD AdSCSI Plus interface remake project in progress

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On the first day of the New Year, I would like to announce that I have finally managed to reproduce the contents of the 5 GAL16V8 protected chips from this device, which of course will make it possible to build a working clone. I am in the process of building it and when I finish - I will definitely publish all the information on the www.


The work on the project was only possible thanks to brave people - Atari users, whom I thank very much for providing equipment for testing and any other help in this regard. Here they are:


μicr0Bee - our colleague from the Atari Area forum - http://www.atari.org.pl/forum/profile.php?id=2110
SoulBuster - a user from the USA met on the Atari Age forum - https://forums.atariage.com/profile/34424-soulbuster/
ZuluGula - our colleague from the Atari-Area forum - http://www.atari.org.pl/forum/profile.php?id=4492


Praise to them for their support!


I will post the documentation on www in some time. I still need to build a working remake ;-) Interestingly - this will involve two versions of ICD AdSCSI Plus at once. Without a comparator and with a comparator with the fact that the clone will already include a comparator - there's a reason why the ICD folks made this change in the layout, in later versions. That's the story.


Cheers to 2023!



if you would like to help me out a bit, please send a donation to paypal - details are on my website's startpage http://atari.myftp.org/

Edited by t0ri
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I am pleased and proud to say that the ICD AdSCSI Plus interface restoration project has been completed. Based on the reproduced data, I have built a working clone of the device, which behaves identically (well) to the original :)

Feel free to visit my website - http://atari.myftp.org to the Atari 16-bit section. Pages are in Polish so please use Google translator service.

It is free - as always with me....



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Thanks this was a hard work :)


You can use any compatible CPLD like GAL16V8, PALCE16V8 or ATF16V8. They should all work without a problem, but you may have to edit the JED files and rename the progammed chip.




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Awesome! 😀 I remember the old days of comp.sys.atari.st where there were no more ACSI interfaces for sale, so someone hunted down Tom Harker at ICD to see if he would release the designs to the public domain. He said no, and asked for a hefty sum of $$$ that, unless you're rich or somehow plan to make money off them, was too much for most of us. This was in the early days of the internet, so there was no crowd funding back then. Great to see that this can be preserved and people can make them if they are inclined to do so. Looks like this will be on my to-do list when I retire in 10+ years. 😜

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@atarian1 This is the main goal - to preserve valuable equipment and the thought contained in it for many reasons. It's a shame that companies that go out of business don't provide the documentation needed to repair equipment.



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