The Preferred Executable Format is a file format that specifies the format of executable files and other object code. PEF executables are also called Code Fragment Manager files (CFM). PEF was developed by Apple Computer for use in its Mac OS operating system. It was optimised for RISC processors. In Mac OS X, the Mach-O file format is the native executable format.

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  • The Preferred Executable Format is a file format that specifies the format of executable files and other object code. PEF executables are also called Code Fragment Manager files (CFM). PEF was developed by Apple Computer for use in its Mac OS operating system. It was optimised for RISC processors. In Mac OS X, the Mach-O file format is the native executable format. However, PEF is still supported on PowerPC-based Macintoshes and is used by some Carbon applications ported from earlier Mac OS versions. On June 6 2005 at the annual WWDC, Apple Computer announced that Macintoshes would be switching to the Intel processor starting in 2006. As a result of the switch, PEF was deprecated and it was announced that the PEF binary format would not be supported on Intel Macintoshes except through the Rosetta PowerPC emulation software. BeOS on PowerPC systems also uses PEF, although x86 systems do not.
  • Preferred Executable Format（PEF）とは、Mac OS及びMac OS Xの実行ファイル・オブジェクトファイルのフォーマット。BeOSのPowerPC版システムにも使われていた。 Mac OSではPowerPCの搭載に伴い導入され、内部にPowerPCコードと68Kコードのそれぞれを含み、同一のAPIで呼び出せるようになっている（ファットバイナリ）。68K MacintoshでPEFアプリケーションを使用するには、CFM-68K Runtime Enablerという機能拡張が必要となる。 Mac OS XではMach-Oが標準のフォーマットとなっているが、PEFもCarbonアプリケーションで利用できる。Mach-O CarbonはMac OS Xでしか実行できないが、PEF CarbonはMac OS 9とMac OS Xの双方で実行できる。Intel MacではRosetta上でのみ動作し、Intel Macでネイティブに動作するUniversal Binary化にはMach-O化が必須となる。
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  • Preferred Executable Format
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  • com.apple.pef-binary
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  • The Preferred Executable Format is a file format that specifies the format of executable files and other object code. PEF executables are also called Code Fragment Manager files (CFM). PEF was developed by Apple Computer for use in its Mac OS operating system. It was optimised for RISC processors. In Mac OS X, the Mach-O file format is the native executable format.
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  • Preferred Executable Format
  • Preferred Executable Format
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