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The 8520 CIAs from A500, A2000, A3000 are compatible with the A1000.
You could also run a copy of the DiagROM binary on the PiStorm and see what the CIA test reports.
https://www.diagrom.com/index.php/download/
It was ahead of its time. Don’t forget PC’s of the time period were no where near to doing what Commodore were releasing hardware wise. The Amiga had a custom chipset which produced Sound and Graphics. It can multi-task. Okay it wasn’t PC compatible so therefore you couldn’t run things like WordPerfect or Lotus 1-2-3 etc… But things like games and the Demo Scene started because of this system.
Of course you could run WordPerfect on it if you wanted.