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A comment on Apple's follow-up to M1 chip goes into mass production for Mac. Parent comment

Re:Apple's follow-up to M1 chip goes into mass production fo... by r00fus on Tuesday April 27, 2021 @03:24PM (#26960294)
ARMv8, ie, AArch64 is a redesign/new, and entirely 64 bit with legacy (32bit) support mode tacked on. The design was done to be able to remove legacy without another redesign.

To my understanding, this is quite unlike AMD64 (ie, Intel's current 64 bit ISA licensed from AMD) - which extended x86.

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Re:Apple's follow-up to M1 chip goes into mass production fo... by astrange on Tuesday April 27, 2021 @05:25PM (#26961786)
The 32-bit mode is optional; M1 doesn't even support it.
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Re:Apple's follow-up to M1 chip goes into mass production fo... by sitkack on Tuesday April 27, 2021 @11:42PM (#26965303)
AMD64 is a really beautiful design for the constraints it was operating under.

Does anyone know who(mses) designed the instruction set?

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