1. Determining the running kernel mode on 10.6

    It might be useful in some cases to know if the MacOS kernel is running in the 32-bit or 64-bit (K64) mode. This is useful for example if you write an application like ‘System Profiler’ that displays the details of the currently running system:
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  2. Intel 64-bit summary

    Since people are confused regarding Intel 64-bit, here is a brief summary of what can run on which Intel processor.
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