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Asked Mar 9, 2020
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43. What are the difference between following instructions?
LDR
RO, [R1]
LDRH RO, [R1]
LDRB RO, [RI]
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43. What are the difference between following instructions? LDR RO, [R1] LDRH RO, [R1] LDRB RO, [RI]

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Expert Answer

Step 1

Answer:

Addressing mode:

  • LDR, LDRH, and LDRB are the memories which are addressed by a register and an offset.
  • “R0” and “R1” are the registers. A register contains the memory address of the data.
  • “R1” is the value pointer to by “R0”.
Step 2

Consider the memory address and memory data,

Let R1 = 0x02000000

Computer Science homework question answer, step 2, image 1

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