Question: 2. Given a number in R1, extract the highest 4 bits of R1 into R2. For example: R1 0110 1100 0111 0101 R2 0000 0000

2. Given a number in R1, extract the highest 4 bits

2. Given a number in R1, extract the highest 4 bits of R1 into R2. For example: R1 0110 1100 0111 0101 R2 0000 0000 0000 0110 Hint 1: In 2's complement, the highest bit of a negative number is 1. The highest bit of a positive number or zero is 0. Hint 2: Use left shift to turn the second highest bit to be the highest bit

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