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The Apple Lisa uses an interesting chip labeled 341-0064A (C) Apple or COP 421-HZT/N in its I/O Board. This makes it a difficult chip to replace and emulate. This chip was used in all Apple Lisa machines.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.