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the following three lc-3 instructions are then executed, causing a value to be loaded into r6. what is that value?

1 Answer

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The provided sequence of LC-3 instructions loads an initial value from memory into register R6 using the LD instruction, adds 5 to that value using the ADD instruction, and then performs the bitwise NOT operation on the resulting value using the NOT instruction.

How to explain

To determine the final value stored in register R6 after executing these instructions, we would need the initial value loaded into R6 by the LD instruction and then sequentially perform the arithmetic operations described by the subsequent instructions (addition and bitwise NOT) on that initial value.

The Complete Question

Consider the following LC-3 assembly instructions:

LD R6, VALUE (Loads the value from memory into register R6)

ADD R6, R6, #5 (Adds 5 to the value stored in register R6)

NOT R6, R6 (Performs the bitwise NOT operation on the value in register R6)

If these three LC-3 instructions are executed sequentially, starting with the loading of a value into register R6 using the LD instruction, what is the final value stored in register R6 after executing all three instructions?

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