The proprietary 8-bit processors that powered Atari’s home consoles are being resurrected by the Atari History Museum’s Curt Vendel. He’s rebuilding each chip from the fabrication specification data detailed in the original tape-outs he has in his possession, and hopes to be able to crank out brand new replacement chips (the originals have been unavailable to the enthusiast market for years). This looks to my non-engineer eyes like an impressive feat of reverse engineering and history gathering! If nothing else, one can appreciate the high-res circuit scans he’s posted in the discussion thread.
(Via GameSetWatch)