Intel licensed the protocol specs to Tek and Agilent so they could implement it in their logic analyzer, but mandated that it be behind an NDA-wall so people co

Intel licensed the protocol specs to Tek and Agilent so they could implement it in their logic analyzer, but mandated that it be behind an NDA-wall so people couldn't use an analyzer to easily reverse their bus protocols. The NDA nonsense started in the P-II days, during a time when both AMD and Cyrix were making drop-in chips for Socket-7, and Intel wanted to lock them out.