NeXT did 'Fat Binaries' before Apple did, and they are still possible in OS X's.app bundles. NeXT's added Fat Binary support on [simson.net] in 1993. Apple's Fat binaries were introduced with the Power Macintosh line in 1994. NeXT's fat binaries could be built to run 68K, x86, SPARC, and PA-RISC. Of course, right now the search algorithm isn't designed for a fallback mechanism. The system can consider itself either a 'MacOS' or a 'MacOSClassic'. Both are assumed to be generic PPC code and one doesn't fal.
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Not really, the magic is that the application icon in OS X is really just a folder with folders inside it, including what would normally be installed as seperate files in Windows. See, in Windows you have a binary.exe file and a whole slew of other files installed all over the system (dlls, jpgs, gifs, inis, etc.). In OSX you have one icon that's a folder with the 'tidbits' in it and seperate folders for binaries for different machines.
They won't fully optimized the OS until they sunset G4 and G3 support. Until then there are basically just software hooks. That's not true; they can easily make an installer that detects the hardware and installs the appropriate flavor of the Mac OS X PPC kernel. The smaller the code, the less page faults, the more L2 Cache hits.those two alone provide better performance than unrolling loops and inlining functions in general.I have an L2 Cache and I want to make the most of it, the more of the program I can fit in there, the better off I am.
To get this working under Windows you would need a different binary lo. 
Yes, Panther was built with the GCC 3.3 '+' some poeple are calling it. The OS would speed up quite dramatically *if* Apple were to release G3/G4/G5 specific versions as the opts for the G5 if taken to the highest level would actually slow down or break things with a G4 or more likely a G3. More likely they will break it down into chip specific libs and kibbles and bits and have the installer detect and choose. If they code for the middle ground I fear they will give up the best chance of having huge speed gains. They need those gains on the G5 to keep their momentum going. Nd95 keygen for mac.
Some applications or games may need this file to work properly. Crashrpt dll download mw2 for mac.