BTW, Apple’s BootCamp environment isn’t virtualization: the Intel Macs can legitimately run Windows written for Intel processors as a primary OS. The primary difference between emulation and virtualization is that most virtual environments (Parallels, VMware, etc) are able to execute their instructions directly on the host processor, inside a sandboxed set of threads. Rosetta was a little different, in that it was a support library for PPC apps written for the newer OS X, translating the PPC calls to their Intel equivalents to work on Intel processors. Apple dropped “classic” support three OS versions ago. Even when OS X 10.2x thru 10.4x ran the “classic” environment (supporting PPC apps written for OS 8 & 9), it was essentially an emulation of the old Motorola hardware environment. ![]() OS 9 was written to execute on PowerPC processors.
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