If the data segment register (DS) contains 4000H, what physical address will the instruction MOV, AL, [234BH] read?

 

 22) If the data segment register (DS) contains 4000H, what physical address will the instruction MOV, AL, [234BH] read?

1. 634BH

2.

3.

4. 4234BH

Answer: D

Solution

Solution

Here's how to calculate the physical address:

• DS (Data Segment Register): 4000H
• Offset: 234BH

The physical address is calculated using the formula:

Physical Address = (DS X 16) + Offset

1. Convert DS to decimal and multiply by 16:
   • 4000H in decimal is 16384.
   • 16384 * 16 = 262144.
2. Convert the result back to hexadecimal:
   • 262144 in hexadecimal is 40000H.
3. Add the offset:
   • 40000H + 234BH = 4234BH

Therefore, the physical address is 4234BH.

So the answer is 4) 4234BH.

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