Using the Array Sum example below. How do I Modify this example for an Array of

Question

Using the Array Sum example below. How do I Modify this example for an Array of doublewords? Array Sum Example Indirect operands are ideal for traversing an array Note that the register in brackets must be incremented by a value that matches the array type data array W WORD 1000h,2000h,3000h. code mov esi,OFFSET arrayW Or add esi, TYPE arrayW mov ax, [esi] add esi,2 add ax, [esi] AX sum of the array add esi, 2 add ax, [esi] ToDo: Modify this example for an array of doublewords. 59 Irvine, Kip R. Assembly Language for x86 Processors6e, 2010.

Explanation / Answer

Modified Program:-

.data

arrayW WORD 1000h,2000h,3000h

.code

mov esi,OFFSET arrayW

mov ax,[esi]

add esi,4

add ax,[esi]

add esi,4

add ax,[esi]

Explanation :-each element in array of doublewords occupies just double of the space occupied by the elements in array of words. So, we need to increase the amount of offset to next element to twice of the number. In array of words =4 ,therefore in array of doublewords it's 8

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