GENERAL HISTOLOGY

EXCRETORY SYSTEM

CORTEX

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The first half word in the 32 bit Thumb-2 instruction ____
A
Determines the instruction length and functionality
B
Determines the instruction length
C
Determines the instruction functionality
D
Determines address fetch
Explanation: 

Detailed explanation-1: -The first halfword (hw1) determines the instruction length and functionality. If the processor decodes the instruction as 32-bit long, then the processor fetches the second halfword (hw2) of the instruction from the instruction address plus two.

Detailed explanation-2: -Instruction set encoding Thumb instructions are either 16-bit or 32-bit.

Detailed explanation-3: -The Thumb instruction set is a subset of the most commonly used 32-bit ARM instructions. Thumb instructions are each 16 bits long, and have a corresponding 32-bit ARM instruction that has the same effect on the processor model.

There is 1 question to complete.