[astrange]

> They also were just using Arm, the same instructions that they had been using before and something well understood.

Apple switched to (and largely invented) ARMv8/AArch64 in the middle of that, which is very different from the ARMv7 they started with.

[MBCook]

True. What I meant was when the A4 came out it could still run the code that was already in the App Store. Ignoring all other hardware, the Cell couldn’t natively run PS2 code.