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The Invalid 68030 Instruction That Accidentally Allowed the Mac Classic II to Successfully Boot Up from Michael Tsai RSS feed.

The Invalid 68030 Instruction That Accidentally Allowed the Mac Classic II to Successfully Boot Up

Doug Brown (via Uli Kusterer): This is the story of how Apple made a mistake in the ROM of the Macintosh Classic II that probably should have prevented it from booting, but instead, miraculously, its Motorola MC68030 CPU accidentally prevented a crash and saved the day by executing an undefined instruction.[…]I didn’t get very far […]