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There's not much difference to the normal user. However, to those more concerned with how it works, there are some differences.

A COM file is self-contained and cannot exceed 64KB in size because the stack, data, and code must all fit within 64KB. EXE files have no limiting size and have more header information.

The main difference is how they are loaded. When a COM file is loaded by DOS, it is loaded into low memory. EXE files separated where the CONST is loaded low and DATA is loaded high.

Also, if you have both, say EXAMPLE.COM and EXAMPLE.EXE, in the same directory and try to execute without specifing the extention, the COM will load first.

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11y ago
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14y ago

Not much. Both are binary executables. The com files are more frequently seen running under DOS.

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Q: What is the difference between com files and exe files?
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