A fat binary is any executable file, such as an application or code resource, that contains both 680x0 and PowerPC code. Creating a fat binary requires a little more work for the software developer, but the reward is optimal code performance in either environment.
A fat application contains PowerPC code in its data fork and a 680x0 version of the same code in its resource fork. You can run a fat application on both types of Macintosh computers.
Remember that PowerPC code is stored in the data fork of the application file by default when you build a PowerPC application. This makes building fat applications possible.
This article was published in the "Information Alley":
Volume II, Issue 5, Page 11
Article Change History:
19 Jul 1995 - Updated from Info Alley.
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