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Thumb

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Created: ivey (29 Mar 2007)
Last edited: hamishwillee (31 Jul 2012)

Thumb is a 16-bit instruction set for ARM processors. While incorporating the same design characteristics, the Thumb instruction set requires only a 16-bit wide system data bus, thereby using less power, offering a smaller footprint, and reducing overall system cost. The Thumb instruction set features a subset of the most commonly used 32-bit ARM instructions, which have been compressed into 16-bit wide codes to provide better code densities. On execution, these 16-bit instructions are decompressed transparently and in real-time to full 32-bit instructions.


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This page was last modified on 31 July 2012, at 10:53.
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