imported>AnomieBOT: Dating maintenance tags: {{How}}

2025-06-24T18:08:33Z

Dating maintenance tags: {{How}}

← Previous revision		Revision as of 18:08, 24 June 2025
Line 16:		Line 16:
	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).		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 [[classic Mac OS]] [[operating system]]. It was ~~optimised~~ for [[Reduced instruction set computer\|RISC]] [[central processing unit\|processors]]. In [[macOS]], the [[Mach-O]] file format is the native [[executable]] format. However, PEF was still supported on [[PowerPC]]-based Macintoshes running Mac OS X and was used by some [[Carbon (computing)\|Carbon]] applications ported from earlier versions for classic Mac OS, so that the same binary could be run on classic Mac OS and Mac OS X.		PEF was developed by [[Apple Computer]] for use in its [[classic Mac OS]] [[operating system]]. It was optimized for [[Reduced instruction set computer\|RISC]] [[central processing unit\|processors]].{{how\|date=June 2025}} In [[macOS]], the [[Mach-O]] file format is the native [[executable]] format. However, PEF was still supported on [[PowerPC]]-based Macintoshes running Mac OS X and was used by some [[Carbon (computing)\|Carbon]] applications ported from earlier versions for classic Mac OS, so that the same binary could be run on classic Mac OS and Mac OS X.

	[[BeOS]] on PowerPC systems also uses PEF, although [[x86]] systems do not.		[[BeOS]] on PowerPC systems also uses PEF, although [[x86]] systems do not.

imported>Matthiaspaul: /* See also */ +link

2022-01-01T18:40:59Z

See also: +link

New page

{{Infobox file format
| name = Preferred Executable Format
| icon =
| extension =
| mime =
| type code =
| uniform type = com.apple.pef-binary
| owner = [[Apple Computer]]
| genre = [[executable]]
| container for = [[PowerPC]] [[executable]] and [[object code]]
| contained by =
| extended from =
| extended to =
| standard =
}}
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 [[classic Mac OS]] [[operating system]]. It was optimised for [[Reduced instruction set computer|RISC]] [[central processing unit|processors]]. In [[macOS]], the [[Mach-O]] file format is the native [[executable]] format. However, PEF was still supported on [[PowerPC]]-based Macintoshes running Mac OS X and was used by some [[Carbon (computing)|Carbon]] applications ported from earlier versions for classic Mac OS, so that the same binary could be run on classic Mac OS and Mac OS X.

[[BeOS]] on PowerPC systems also uses PEF, although [[x86]] systems do not.

==See also==
* [[Comparison of executable file formats]]
* [[Fat binary]]

==External links==
* [https://web.archive.org/web/20020208214155/http://developer.apple.com/techpubs/mac/runtimehtml/RTArch-89.html PEF Structure] - documentation at developer.apple.com via web.archive.org
* [https://developer.apple.com/legacy/library/documentation/mac/pdf/MacOS_RT_Architectures.pdf Mac OS Runtime Architectures For System 7 Through Mac OS 9] - PDF from developer.apple.com (see chapter 8, PEF Structure)
* [https://web.archive.org/web/20110603204602/http://developer.apple.com/tools/mpw-tools/commandref/dumppef.html dumppef Documentation] - description of what is in a PEF file, such as allowed sections the string table.
{{Executables}}
{{Mac-software-stub}}

[[Category:Executable file formats]]
[[Category:Apple Inc. software]]

Preferred Executable Format - Revision history

imported>AnomieBOT: Dating maintenance tags: {{How}}

imported>Matthiaspaul: /* See also */ +link