IBM developed the blue lightning chip shown above by modifying an intel 386. At some point they had a licensing agreement with intel to produce their chips, and got permission to make their own special version. After the agreement expired, IBM signed a new agreement with Cyrix, but they thought the Blue Lightning name sounded catchy, so they slapped it on some Cyrix DX2 chips.
The bottom line is if you have a 168 pin 486 CPU that says "blue lightning" on it, what you have is actually a Cyrix.
"Will the highways on the internets become more few?" -Gee Dubya
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