Question x86 and ARM architectures comparison thread.

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Doug S

Diamond Member
Feb 8, 2020
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I wonder how Rosetta wasn't sued by Intel

For what? Intel didn't sue Transmeta and their entire business model was essentially a Rosetta type strategy to directly compete with Intel - they even sued Intel themselves (something to do with low power) and Intel still didn't sue them back over the emulation.

The only argument Intel could make would have been Rosetta 2 "using" Intel's patented instructions, which was supposedly why Rosetta 2 only supported SSE 4.2 at release; since SSE* was so old it was out of patent. They later updated Rosetta 2 to support AVX 2 which was still under patent, but even if Intel had grounds for a suit it would have been pointless since Apple's transition off x86 was complete.
 

gdansk

Diamond Member
Feb 8, 2011
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It would be a tenuous case. As far as I know they didn't sue DEC for FX!32 either.
When was the last time Intel was successful in court preventing another x86 manufacturer even? Was it UMC's 486?

Cyrix/National, AMD, VIA. All won enough to keep making x86 after their legal battles.
 
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