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I recall at least the (now discontinued) Qualcomm Centriq (Falkor) did away with 32-bit ARM (ARMv7, thumb*, etc.) and only supported the 64-bit ARMv8. If the ma
by jabl 8y ago
I recall at least the (now discontinued) Qualcomm Centriq (Falkor) did away with 32-bit ARM (ARMv7, thumb*, etc.) and only supported the 64-bit ARMv8. If the market you're targeting doesn't value backwards compatibility, why bother?
Wouldn't surprise me if there are other A64-only chips as well.
- webaholic 8y agoIndeed. Both falkor and thunderX2 are A64-only. The backwards compatible A32 mode is optional only and not implemented by the ARM server vendors except Ampere eMag.
- jabl 8y agoThanks. Anyone know whether the recently announced ARM 'Ares' core supports anything but A64?
- ksec 8y agoYes, and I wouldn't be surprised some year down the road, or even next iPhone A13 would be AArch64 only.
- etaoins 8y agoiOS 11 removed support for 32bit applications. Because the iPhone X requires iOS 11 I’m not aware of any way to run 32bit code on A11 processors and above. A32 support is likely already gone at the hardware level.