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A comment on AMD Could Enter ARM Market with Sound Wave APU Built on TSMC 3nm Process. Parent comment

Re:AMD Could Enter ARM Market with Sound Wave APU Built on T... by le-mark on Friday October 31, 2025 @09:03AM (#45771540)
> jazelle

That’s a blast from the past; native Java bytecode! Did anyone actually use that? Some J2ME phones maybe? Is there a more relevant example?

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Re:AMD Could Enter ARM Market with Sound Wave APU Built on T... by hmry on Saturday November 01, 2025 @08:56AM (#45781279)
> Did anyone actually use that?

AFAIK you needed to pay a license fee to write programs using Jazelle instructions (so you needed to weigh whether the speedup of Jazelle was cheaper than just buying a more powerful CPU), and the instruction set itself was also secret, requiring an NDA to get any documentation (so no open source software could use it, and no open toolchains supported it).

I remember being very disappointed when I found out about that

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