![]() ![]() To allow a single executable image (or runtime library) to run natively on either architecture, the OS (and associated tools) support “universal-binaries” thus a single file can contain both the code required for the AArch64 architecture and also that required for the x86_64 one. That is a good thing since it means we have a useful environment without changing or recompiling any code, but a bad one in terms of potential confusion. The presence of this emulator means that x86_64 native executables can run on this machine without any change. To allow machines built with this processor to run code which was built for the x86_64 architecture, MacOS (in the “Big Sur” and later releases) supplies an x86_64 binary translation emulator (“Rosetta-2”). ![]() The Apple M1 is an Apple implementation of an Arm 64-bit ( AArch64 ) architecture processor. ![]()
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