4.2 Assembly Language (3)

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1.

Explain, with examples, why grouping instructions together in a program is beneficial for code readability and maintainability.

2.

Explain the difference between a 16-bit processor and a 32-bit processor in terms of their ability to directly manipulate data. How does this difference impact the size of the memory that can be directly addressed by the processor, and how does this relate to the concept of addressing modes in assembly language? Provide examples of how addressing modes can be used to access data in both 16-bit and 32-bit architectures.

3.

Consider the following assembly code snippet. Identify the value stored in the register 'R1' after the execution of the instructions. Assume R0 is initialized to 20 and R2 is initialized to 3.

    LOAD R1, R0   ; Load the value of R0 into R1
    ADD R1, R2    ; Add the value of R2 to R1