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1) Given X byte 1,2,3,4,5

Y word 2,4, 1,100.1, 17,22
Zdword 1000, 1, 4,22, OAh
What is x[3]?
What is y[6]?
What is z [4?
Write the commands and loop to printout array z Use ex and
esi

1 Answer

5 votes

Final answer:

To find x[3], y[6], and z[4], we examine given arrays and use 0-based indexing to retrieve the fourth element of X which is 4, the seventh element of Y, which is out-of-bounds, and the fifth element of Z which is 22. Printing the Z array in assembly would involve a loop that increments the ESI register to access each element and ECX as the loop counter.

Step-by-step explanation:

The question is asking for the values at specific indices within arrays and how to write a loop to print out the elements of an array in assembly language using the ECX and ESI registers. When dealing with arrays in assembly, indexing starts at 0. Therefore:

  • x[3] would refer to the fourth element of array X, which is 4.
  • y[6] would refer to the seventh element of array Y, assuming the array has enough elements; however, the Y array shown only has five elements, so this is an out-of-bounds access or the array provided is incomplete.
  • z[4] would refer to the fifth element of array Z, which is 22.

To print out array Z using a loop in assembly, one would typically use a loop structure incrementing ESI to iterate over each element. The loop might look something like this:

mov ECX, length_of_Z_array ; Set ECX to the length of the arraymov ESI, OFFSET Z ; Set ESI to the start address of array Zloop_start:mov EAX, [ESI] ; Move the current element of Z into EAX; Add code to print EAX hereadd ESI, 4 ; Move to the next element (assuming dword elements)loop loop_start

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