Question: ARM instructions have a 12-bit literal. Instead of permitting a word in the range 0 to 2 12 - 1, the ARM uses an 8-bit

ARM instructions have a 12-bit literal. Instead of permitting a word in the range 0 to 2¹² - 1, the ARM uses an 8-bit format for the integer and a 4-bit alignment field that allows the integer to be shifted in steps of 2. What are the advantages and disadvantages of this mechanism in comparison with a straight 12-bit integer?

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