What does the T bit indicate when set in a frame?
Understand the Problem
The question is asking about the significance of the 'T' bit in a frame, which likely pertains to networking or data communication protocols. The user needs to identify what this specific bit indicates among the provided options.
Answer
T bit indicates Thumb state execution when set.
The T bit, when set, indicates that the processor is executing in Thumb state rather than ARM state.
Answer for screen readers
The T bit, when set, indicates that the processor is executing in Thumb state rather than ARM state.
More Information
The Thumb instruction set is a more compact representation of the ARM architecture, designed to increase performance by utilizing smaller instruction sizes. The T bit in the status register helps toggle between these two states.
Tips
One might mistakenly interpret the T bit as an indicator of a totally different state or function unrelated to the ARM processor states.
Sources
- The ARM instruction sets - Arm Developer - developer.arm.com
- Thumb Instruction Set - an overview | ScienceDirect Topics - sciencedirect.com
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