Linked by Jeremy T. Fox on Fri 11th Jul 2003 16:55 UTC
Mac OS X A recent article by Tony Smith from The Register titled "Mac OS X 10.3 Panther will not be a 64-bit OS" caused a good deal of confusion with many people, including me. It is also caused a heated argument here on OSNews. The basic point of the article is that Mac OS 10.2.7 and 10.3 are not "true" 64-bit OSes, but the article does not clearly explain what a "true" 64-bit OS is. This had led to a lot of claims that the article is false or misinformed, rather than just unclear, which is certainly is.
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Multi architecture objects
by David Lázaro on Fri 11th Jul 2003 12:52 UTC

Mac OS X native object format is Mach-O. One of its features is that it supports storage of various architecture objects within a single file. So having a framework available for both G4 and G5 should be possible.

You can find more information on the Mach-O Runtime Architecture book, available at the Apple Developer Connection site has more information.